Oil & Gas Companies in Houston, TX

Diving, geophysical, navigation and underwater robotics services.

Natural gas producer and marketer.

Cal Dive International is a multinational marine construction company providing subsea and offshore services including manned diving, pipelay and pipe burial, platform installation, and platform salvage, serving oil and gas producers, pipeline companies, and offshore engineering firms across global markets.

Callon Petroleum Company is an independent oil and natural gas exploration and production company focused on acquiring, exploring, and developing assets in the Permian Basin and other leading oil plays across west and south Texas.

Cameron, a SLB company, designs and manufactures flow control equipment, systems, and services for the oil, gas, and process industries, supporting applications across drilling, subsea, pipeline, separation, and refining operations worldwide.

Independent energy company: exploration, development and production of gas and oil.

Drilling-motor technical professionals and services.

ChainCo International provides inspection and sales of chain and associated equipment for the offshore and land-based industries. Since 2012, the company has conducted inspections using a chain inspection unit (CIU) for clients in the oil and offshore sector, holding certification to international standards.

Screener of oil and gas prospects in the Gulf of Mexico and North Sea.

Cobalt International Energy is an exploration and production company focused on deepwater oil and gas operations in the U.S. Gulf of Mexico and offshore West Africa.

Software for design, rating and drafting of ASME pressure vessels and heat exchangers.

Complete Production Services Inc. provides oilfield services focused on the completion and production phases of oil and gas wells, with primary operations concentrated in unconventional oil and gas plays across North America.

Offshore subsea contractor.

Conoco Inc. is a global oil and gas exploration and production company, operating across regions including Alaska, Canada, Europe, the Middle East, Africa, and Asia Pacific, with activities spanning exploration, production, and commercial gas and LNG.

ConocoPhillips is a global oil and gas exploration and production company operating across 13 countries. The company focuses on finding and producing oil and natural gas.

Control Flow, Inc. manufactures valves, wellhead equipment, production pressure control equipment, offshore drilling equipment, and motion compensation systems, marketing products under the Flocon, Westech, Mo-Comp, and Retsco brand names.

Flow-equipment products, systems and services for oil, gas and process industries.

CRC-Evans Pipeline International, Inc. provides equipment and services for onshore and offshore pipeline construction, including pipe handling, field joint coating, NDT inspection, double jointing, and spoolbase management, supporting contractors across the full pipeline installation process.

Cudd Pressure Control provides well intervention and pressure control services to the oil and gas industry, supporting operations ranging from routine completion work to complex well challenges through planning, design, and field execution.

Cudd Well Control provides well control response and engineering services to the oil and gas industry on a global basis, specializing in rapid deployment for well emergencies and blowouts.

Marine tank management, valve actuation and tank measurement.

Bolt and gasket manufacturing, inspection and testing.

Deepwater Corrosion Services Inc. provides cathodic protection engineering, anode systems, and corrosion monitoring services for offshore energy infrastructure, including platforms, pipelines, and FPSOs. The company specializes in custom corrosion control solutions designed to extend the productive life of subsea and offshore assets.

Offshore mooring solutions for the oil and gas industry.

Derrick Equipment Company is a family-owned manufacturer of separation technology products for the oil and gas, mining, industrial, and underground construction sectors, offering shale shakers, centrifuges, woven wire screens, hydrocyclones, degassers, and related equipment.

Derrick Services Ltd. provides drilling structure design, manufacture, upgrade, and inspection services to the oil and gas industry, with capabilities including rope access, NDT, welding, and brownfield installation projects supported by fabrication facilities across the UK, UAE, Singapore, and Indonesia.

Diamond Offshore provides contract drilling services to the energy industry worldwide, with a focus on deepwater drilling operations. The company operates a fleet of offshore drilling rigs and has been active in the offshore drilling sector since its earliest days.

Diamond Products International manufactures diamond blades and cutting tools for concrete and masonry applications, offering a broad product line including wet blades, dry blades, floor grinding blades, tuck point blades, and early entry saw blades.

Draco Spring Mfg. Co. manufactures springs and related mechanical components, supplying businesses in the oil and gas industry and other industrial sectors from its facility in Houston, Texas.

Dragados Offshore, S.A. is an engineering, procurement, and construction (EPC) contractor serving the oil and gas and renewable energy industries, specializing in offshore platform construction, pipelines, and the fabrication of HVDC platforms for the wind energy sector.

Wire and cable solutions.

Dril-Quip designs and manufactures offshore drilling and production equipment, including subsea structures, wellhead connectors, mudline suspension systems, and diverter systems. The company also provides aftermarket services and technical advisory support for deepwater and harsh-environment applications worldwide.

Dyna-Drill Technologies designs and manufactures downhole motor equipment for the oil and gas industry, drawing on more than six decades of experience. The company utilizes CNC machining centers, vacuum furnaces, and specialized laboratories for product testing, elastomer development, and quality control.

Energy measurement services.

International oil and gas exploration and production company.

Energy Alloys supplies specialty steel alloys and metals exclusively to the oilfield industry, offering services including inventory management, value-added machining, and turnkey component manufacturing. The company operates globally with facilities across the US, UK, Dubai, Mexico, India, and Singapore.

Energy Personnel International is a staffing and recruiting firm, founded in 1978, serving companies and professionals in crude oil, natural gas, natural gas liquids, and electric power across commercial, transactional, regulatory, legal, engineering, operations, and financial functions.

Multi-discipline engineering design and project management for the upstream.

Engineered Spring Products manufactures compression, torsion, extension, garter, and Belleville disc springs, snap rings, and flat form products for oil and gas applications including safety valves, completion tools, artificial lift pumps, and downhole equipment, with supporting services such as NDT, shot peening, and plating.

Enventure Global Technology develops and delivers solid expandable tubular technology for oil and gas drilling and production operations, providing solutions for wellbore integrity challenges including trouble zone mitigation in offshore wells and corrosion repair in onshore wells.

EOG Resources, Inc. is one of the largest crude oil and natural gas exploration and production companies in the United States, with proved reserves in the U.S. and Trinidad.

EXMAR Houston is part of EXMAR, a provider of floating solutions for the operation, transportation, and transformation of gas, with expertise spanning shipping, infrastructure, offshore services, and ship management.

Exterran provides natural gas compression, gas processing and treating, and production equipment solutions, along with integrated power generation and produced water treatment systems. The company also offers project integration services and aftermarket parts and services support.

ExxonMobil Corporation is one of the world's largest publicly traded oil and gas companies, engaged in exploration, production, refining, and chemicals manufacturing across global operations.

Complete machining and grinding capabilities for turnkey service.

Fabricated metal products for various industries.

Precision bolt-loading and removal solutions.

Federal Flange manufactures custom engineered connectors, flanges, and fittings for oil and gas, power generation, and manufacturing applications, including deepwater subsea connectors. The company specializes in fast-turnaround custom fabrication and has operated since 1975.

FloaTEC, LLC is a 50/50 joint venture between McDermott International and Keppel Offshore & Marine that designs and delivers proprietary floating production systems, including TLP, spar, and semi-submersible hull configurations, for both wet tree and dry tree deepwater applications.

World's leading supplier of subsea production systems.

Broad-based supplier of equipment and technology for drilling and production.

Freeman & Curiel Engineers provides engineering, procurement, and construction services for upstream, midstream, and turbomachinery oil and gas projects. The firm offers both full EPC delivery and individual services including project management, rotating equipment, compressor stations, amine plants, and commissioning support.

Fugro Geoservices Inc. provides geotechnical and geophysical investigation services for land and offshore projects, including marine site investigations, drilling, cone penetration testing, and laboratory testing to characterize subsurface conditions for construction, infrastructure, and energy applications.

Geological studies, data acquisition, positioning and surveying.

Oil and gas engineering consulting.

Electric industrial heaters, heating systems and controls.

Flare equipment design, materials and construction.

Generon IGS Americas engineers and manufactures nitrogen generators, gas separation systems, oxygen generators, and process gas compression solutions, serving multiple industries with membrane, PSA, and custom-engineered equipment configurations.

Geomechanics International provides consulting, software, and training services focused on geomechanical applications for the oil and gas industry, including wellbore stability management, pore pressure prediction, and in-situ stress analysis to support well planning, drilling, completion, and production operations.

Geospace Engineering Resources International L.P., operating as Geospace Technologies, develops and supplies equipment and technology for energy exploration, including land and marine seismic instruments, geophones, reservoir monitoring systems, and downhole tools.

Gill Services, Inc. provides excavation work in support of oil and gas operations. The company serves the energy sector with earth-moving and site preparation services.

Gilmore Valve Co., now operating as Gilmore, a Control Devices Company, manufactures valves and control devices for industrial applications. The company serves the oil and gas sector as part of its broader equipment and manufacturing operations.

Global Project Consultants (GPC) provides project management and consulting services to the energy industry worldwide. The company operates subsidiary offices in Brazil, Nigeria, and Venezuela, and maintains joint venture and alliance partnerships across multiple regions including Angola, Europe, and Australasia.

Grace Instrument manufactures analytical instruments including viscometers, rheometers, and core flood testers for use in oil and gas laboratories and research institutions worldwide. Their equipment supports testing applications across drilling fluids, frac fluids, cementing, acidizing, and core analysis.

International seismic contractor.

Downhole cable for permanent well-monitoring systems.

Gulf Publishing Company produces and distributes trade journals, research, databases, and publications serving the energy industry. Its portfolio of brands includes *World Oil*, *Hydrocarbon Processing*, and *Petroleum Economist*, along with industry conferences and events.

Gulf Research Center is a nonprofit think tank founded in 2000 that conducts independent scholarly research on political, economic, and strategic affairs across the Gulf region, including GCC countries, Iran, Iraq, and Yemen, and publishes findings through reports, seminars, and conferences.

GulfMark Offshore owns and operates a global fleet of offshore support vessels, including platform supply, anchor handling towing supply, fast supply/crewboats, and specialty vessels, providing marine transportation services to the upstream oil and gas industry.

GustoMSC Inc. provides design and engineering consultancy for mobile offshore units, including jack-ups, vessels, and semi-submersibles. The company also offers operational support and engineering services for jacking systems and marine structures.

Halliburton is one of the world's largest oilfield services companies, providing products and services across the full reservoir lifecycle, including drilling, formation evaluation, well construction, completion, and production optimization.

Hart Energy Publishing LP is a Houston-based media and research firm serving the oil and gas industry with news, data, analysis, events, and custom content focused on upstream exploration, shale plays, midstream, energy transactions, and emerging energies since 1973.

Metric hydraulic components.

Helix Energy Solutions Group provides offshore energy services including well intervention, robotics, and decommissioning operations. The company supports oil and gas production, renewable energy developments, and end-of-life field decommissioning through a specialized fleet of vessels and subsea equipment.

Hercules Offshore operates a fleet of jackup rigs and liftboats, providing drilling, well service, platform inspection, maintenance, and decommissioning services to oil and gas producers in shallow water markets worldwide.

Corrosion-resistant fluoropolymer coatings for subsea and process equipment.

Emerging international exploration, development and production independent.

Holloway Houston Inc. supplies lifting products and related services to the oil and gas industry, offering large product inventories, in-house testing facilities, and ISO 9001:2015 certified manufacturing and machining capabilities supporting marine construction, commercial diving, rental, and decommissioning operations.

Marine pipeline and diving construction.

Hot-Hed, Inc. provides oilfield services, equipment, and safety solutions to upstream, midstream, and downstream markets, specializing in wellhead repairs, pressure testing, hydrostatic testing, and equipment rentals, with certified welders, technicians, and petroleum engineers available for onshore and offshore operations worldwide.

Water-based hydraulic chemicals and drilling fluids.

Houston Digital Instruments, Inc. designs and manufactures certified, intrinsically safe instrumentation for oil and gas applications, including pressure gauges, pressure transmitters, pump stroke counters, and choke position indicators used in high-pressure, high-temperature drilling and well control operations onshore and offshore.

Swivel joints, pup joints, check/relief valves and high-pressure fittings.

Engineering for offshore developments from concept to detailed design.

Hydraquip is a Danfoss Premier Partner providing hydraulic power systems, cooling solutions, electric motors and drives, hose assemblies and fittings, and service and repair support for a range of industrial applications.

Manufacturer of tubulars: casing, drill pipe and tubing.

Engineers and builds advanced drilling rigs and components.

Indumar Products, Inc. manufactures the Stop It pipe repair system, a composite wrap solution for sealing leaks and rehabilitating pipes in refineries, chemical plants, and other industrial settings, including high-pressure applications up to 2,000 psi.

INTEC Engineering designs and delivers thermal oil-based energy systems for industrial process heat applications, including direct fired heaters, waste heat boilers, biomass combustion systems, and ORC power plants, with core components manufactured through its subsidiary in Bruchsal, Germany.

INTEC Engineering Partnership, Ltd. provides engineering and consulting services including planning, design, strength analysis, HAZOP procedures, and specification services, along with plant services such as commissioning, modernization, and safety inspections across industries including oil and gas, petrochemical, and energy.

Integrated Equipment, Inc. is an OEM manufacturer of API monogrammed pressure control equipment and elastomers, producing blowout preventers, valves, manifolds, wellheads, and related spare parts for the oil and gas industry.

InterMoor, an Acteon company, provides mooring solutions and related services for offshore oil and gas, renewables, and aquaculture sectors, including engineering and design, offshore installation, subsea foundations, retrieval, and decommissioning across all marine environments.

International Paint LLC is a global manufacturer of paints and protective coatings, operating under the AkzoNobel portfolio. The company supplies corrosion protection and coating solutions for marine, industrial, and oil and gas applications.

Intsel Steel Distributors supplies structural steel products to industrial and commercial customers in the Houston area, serving as a full-line distributor for projects requiring beams, columns, and other structural steel components.

Design, fabrication and installation of offshore platforms and pipelines.

Jamison Products manufactures and supplies engineered fluid handling equipment, including basket strainers, bag and cartridge filters, pig launchers and receivers, and ASME code vessels. The company also represents Tube Turns, a division of Sypris Technologies, for closures, insulated joints, and anchor flanges.

Jelec USA Inc. supplies equipment and services to oil and gas companies, with a primary focus on drilling operations including platform rigs, MODUs, and e-frac applications, while also supporting energy transition initiatives within the oilfield sector.

Jogler, Inc. manufactures level measurement devices for industrial applications, including magnetic level gauges, magnetostrictive level transmitters, point level switches, liquid level and flow indicators, and laser level transmitters, serving customers across the Gulf Coast and internationally.

JP Kenny provides engineering and consulting services to the energy sector, with expertise spanning pipeline engineering, LNG, refining and chemicals, gas turbines, and automation and control, supporting projects and operations across global energy and materials markets.

Manufactures, repairs and sells oilfield and drilling equipment.

K-DYNE, Inc. manufactures level and pressure control instruments for the oil and gas and petrochemical industries from its facility in Tomball, Texas. Products include level switches, pressure switches, external cages, pilot relays, magnetic level gauges, and ESD stations.

KnightHawk Engineering, Inc. is a specialty engineering and consulting firm offering services in root cause analysis, forensic engineering, rotordynamics, corrosion engineering, risk management, and expert witnessing, with 24-hour emergency response capabilities for industrial clients worldwide.

Instrumentation valves, tube fittings and pipe fittings.

Software, consultancy and engineering for seismic and exploration.

Turbine repair for power generation, pipeline and petrochemical.

LHR Services & Equipment, Inc. is a Houston-based distributor of industrial safety products, including personal protective equipment, fall protection, FR clothing, and dropped object prevention tools, serving the oil and gas industry since 1983, with additional testing, repair, and re-certification services for safety equipment.

Logan Oil Tools, acquired by Rubicon Oilfield International in 2017, manufactures and supplies downhole fishing tools, drilling tools, vibration tools and jars, and completion and production products for oilfield drilling and wellbore intervention operations.

Drilling, drill-in and completion fluids, solids- and pressure-control.

Integrated O&G company focused on the Gulf of Guinea.

Mako DeepWater provides offshore and subsea products and services, including subsea enclosures, ROV control panels, PBOF cables, MUX connectors, marine riser and BOP cleaning, hydraulic flushing, and offshore fabrication, serving clients in Texas and nationwide.

Marathon Oil Corporation is an independent oil and natural gas exploration and production company headquartered in Houston, Texas, focused on U.S. resource plays including oil sands mining operations.

Marinetek (USA), Inc. is the American subsidiary of Finland-based Marinetek Group, a global designer, manufacturer, and installer of marinas, floating structures, pontoons, and breakwaters, serving waterfront development projects across commercial, residential, and recreational sectors.

Products for drilling, completion and production of oil and gas.

MCM Oil Tools is a Texas-based API 6A certified manufacturer of manifolds, gate valves, chokes, check valves, and control panels for the oil and gas industry, offering both manual and hydraulic configurations with fully interchangeable OEM-compatible components.

Advanced engineering for floating production and subsea field developments.

Alarm, signal and control equipment.

New concepts for production and subsea systems.

Merrick Systems, Inc. provides production management and accounting software to oil and gas exploration and production companies, supporting hydrocarbon accounting, field data capture, GIS mapping, and production operations management.

Metal Coatings provides protective coating services and industrial fasteners to clients across multiple industries, including oil and gas. The company supports corrosion prevention and structural integrity needs for a variety of applications.

MEXSSUB International, Inc. provides permanent pipeline integrity solutions for oil and gas operators worldwide, offering both preventative and corrective repair systems across the full lifespan of a pipeline.

MIB Engineers provides mechanical engineering, design, and 3D modeling services to the offshore oil and gas industry, with expertise in subsea systems, ROV applications, pipe stress analysis, FEA simulations, and third-party verification and inspection services.

Engineering and design expertise for oil and gas companies.

Micro-SMART Systems, Inc. designs and manufactures slimline downhole data acquisition tools for oil and gas exploration, measuring pressure, temperature, flow, gamma, CCL, and fluid capacitance, with capabilities including slickline perforating, downhole shut-in, cement dumping, and braided line cutting.

Wireline directional instrumentation products and services.

MODEC International is a general contractor specializing in the engineering, procurement, construction, and installation of floating production systems, including FPSOs, FSOs, tension leg platforms, semi-submersibles, MOPUs, and FLNG vessels.

ModuSpec provides rig inspection, well control verification, and assurance services to oil and gas operators, drilling contractors, and service companies worldwide. Services include rig reactivation, subsea asset monitoring, managed pressure drilling, engineering solutions, and HSEQ training.

Industrial testing, mechanical design and engineering consulting.

Specialty coatings and chemicals used in oil and gas operations.

Moss Seal manufactures and distributes fluid sealing solutions for oil and gas applications, including frac balls, ball seats, back-ups, wipers, and U-cups, with in-house capabilities in steel, aluminum, rubber, composites, and thermoplastics, and holds ISO 9001:2015 certification.

Market leader in OCTG thread protectors and pipe protection.

Technical consulting services and software systems.

Mustang Engineering provides engineering and consulting services to the oil and gas industry, supporting projects across pipeline, refining, chemicals, LNG, and production operations, with capabilities in automation, control systems, and digital solutions.

NATCO Group Inc. designs, manufactures, and markets oil and gas production equipment and systems worldwide, including separators, heaters, dehydration and water treatment equipment, gas conditioning systems, and integrated processing trains for offshore and onshore applications.

Manufacturer and distributor of brass, bronze and copper alloys.

National Oilwell Varco (NOV) designs and manufactures equipment and technology for the oil and gas industry, including drilling rigs, downhole tools, completion tools, and production equipment, serving operators and service companies in both upstream and industrial markets worldwide.

National-K-Works Inc. designs and manufactures thermal and pressure management solutions, including vacuum flasks, pressure housings, and gas gun barrels, serving the oilfield, wireline logging, and geothermal sectors. The company also provides precision machining, pressure testing, and engineering services.

Drilling-rig packages, triplex mud pumps and wellhead equipment.

Newfield Exploration Company is an independent oil and gas exploration and production company focused on domestic liquids-rich unconventional resource plays in the Anadarko and Arkoma basins of Oklahoma, the Williston Basin of North Dakota, and the Uinta Basin of Utah, with additional offshore oil developments in China.

Newpark Drilling Fluids provides drilling, drill-in, completion, and stimulation fluid solutions to oil and gas and geothermal operators. The company offers fluid modeling and simulation services to optimize performance for specific downhole conditions.

Norriseal, a Dover Company, manufactures engineered valve and control solutions for the oil and gas industry, including control valves, butterfly valves, safety relief valves, check valves, actuators, level controllers, and pressure regulators, with applications also in marine, power generation, and HVAC sectors.

Northern Offshore is an offshore oil and gas drilling contractor operating a fleet that includes managed drilling rigs, a floating production unit, and high-specification jackup rigs, with capabilities spanning directional drilling, well intervention, and related offshore drilling services.

Ocean Flow International provides engineering and project management services to the offshore energy industry, with capabilities spanning subsea architecture, riser engineering, subsea tree design, geotechnical analysis, and welding engineering.

Oceaneering International provides subsea engineering services and robotic solutions to the offshore energy industry, including ROV operations, well intervention, diving services, and integrity management, supported by a range of subsea products and intervention vessels.

Design and manufacture of subsea control umbilicals.

Oceaneering Space & Thermal Systems delivers engineered products and services across multiple industries, including energy, defense, aerospace, manufacturing, logistics, and renewable energy, with offerings spanning subsea systems, robotics, autonomous transit, and structural manufacturing.

OceanWorks International Inc. provides subsea systems engineering, design, fabrication, and testing services to the military, scientific, and oil and gas markets, with expertise in deep submergence technology, manned submersible systems, and seafloor network solutions.

Engineering, design and manufacture of oilfield drilling equipment and rig packages.

Connectors, glands, transits, enclosures and junction boxes.

Turnkey offshore project services.

Source for the financial world of oil and gas.

Advanced hydraulic accumulators (part of the Olaer group).

Well-productivity enhancement and logging solutions.

AC drives and motors for drilling and marine industries.

Omron IDM Controls provides industrial automation and safety equipment, including programmable logic controllers, machine vision systems, robotics, sensors, servo drives, and related control components for manufacturing applications.

Engineering and project-management services.

Orion Marine Group Inc. provides marine construction, dredging, and pipeline construction services across the continental United States, Alaska, Canada, the Caribbean Basin, and the Bahamas, operating as a subsidiary of Orion Group Holdings, Inc.

Drilling and well-service industry in the Middle East and North Africa.

OYO Geospace designs and manufactures seismic sensors, geophones, and instrumentation for energy exploration, as well as industrial sensors and downhole tools. The company also produces marine seismic accessories and real-time reservoir monitoring systems for customers worldwide.

Paragon Engineering and Management is a professional consulting firm with over 20 years of experience specializing in construction management, program management, project and design management, environmental services, and IT across sectors including education, aviation, ports, transportation, and public works.

LWD/MWD, directional drilling and downhole drilling motors.

Cranes and hoists for the offshore petroleum industry.

Patterson Services, Inc. rents oilfield tubulars, blowout preventers (BOPs), and associated equipment to operators across major U.S. basins and international markets, including Africa, Europe, Asia, South America, and the Middle East.

Patterson Tubular Services provides oil country tubular goods (OCTG) services including inspection, inventory management, handling and maintenance, and rig return programs. The company also offers barge and rail services and maintains a quality management system for tubular asset management.

Pegasus International Inc. is a Houston-based engineering and consulting firm serving the oil and gas industry. The company merged with Universal ENSCO to form UniversalPegasus International, which was later acquired by Huntington Ingalls Industries.

Pem-Tech, Inc. designs and supplies industrial gas detection products, including fixed sensors, monitors, controllers, wireless gas detectors, and gas analyzers for toxic, combustible, and oxygen-deficiency applications.

Information provider to the oil, gas and electric industries.

Petron Industries Inc. develops and supplies information systems designed for use at drilling rigs, providing data management and monitoring solutions to support oilfield drilling operations.

Pileco, Inc. provides foundation equipment solutions including hydraulic impact hammers, diesel hammers, air hammers, and drilling rigs, along with custom design fabrication and worldwide service support for deep foundation projects.

Pipeline Pigging Products, Inc. manufactures pipeline pigging equipment, including poly pigs, pig launchers, and pumps, and offers pigging services. The company is based in the USA and has rebranded as Pigs Unlimited International, LLC.

Well testing, power chokes and flarestack services.

Precision Tube Technology manufactures coiled tubing for oil and gas well intervention and coiled line pipe for subsea pipeline applications. The company serves global markets and has operated in the coiled tubing industry for more than fifteen years.

One of the world's largest offshore drilling companies, deepwater focus.

Process safety management, risk management and loss prevention.

QCI Marine Offshore, LLC provides turnkey marine construction services specializing in accommodation solutions for the shipping and offshore oil and gas industries, offering both purpose-built and modular options as a single-source provider of marine interiors worldwide.

Coiled tubing products and proprietary technology.

Rapid-Torc Inc. manufactures hydraulic torque wrenches and bolt tensioning equipment used in industrial applications. The company serves sectors requiring precision bolting solutions, including oil and gas operations.

High-tech manufacturer of reset relief valves for the oilfield.

Rowan Companies is a Houston-based offshore contract drilling company providing drilling services to oil and gas operators in demanding offshore environments worldwide.

RR Valve, Inc. designs and manufactures patented hydraulically dampened reset relief valves, including automatic modulating models, with operating ranges from 0 to 10,000 PSI. The company also offers DNV-certified flow control devices and in-house refurbished products, backed by a two-year warranty on new valves.

RSVP Actuators & Controls, based in Houston, Texas, manufactures valve actuators and controls configurable with scotch-yoke, rack and pinion, and spring diaphragm mechanisms.

Engineering contractor in process, transportation, power and petroleum.

SBM-IMODCO Inc., part of the SBM Offshore Group, designs and services marine offloading systems, including Catenary Anchor Leg Mooring and Single Point Mooring buoys that keep tankers moored while transferring fluids via subsea pipeline for the global offshore energy industry.

Scorpion Offshore Inc. is a majority-owned subsidiary of Seadrill Ltd. that operates a fleet of ultra-premium jackup offshore drilling rigs for customers in Brazil, Vietnam, Malaysia, the Arabian Gulf, and Venezuela.

Scorpion Oil Tools manufactures hydraulic chain tongs used for makeup and breakout operations across oil, gas, mining, construction, and drilling applications. Their product line covers pipe OD ranges from 2-3/8" to over 36" and torque ratings up to 250,000 ft-lbs.

Global provider of marine 2D and 3D seismic data.

SeaCAT, LP provides offshore vessel support services for the wind energy sector, operating a fleet of multi-purpose vessels designed for the transport and transfer of personnel and equipment in offshore marine environments.

SEACOR Marine provides marine and support transportation services to offshore energy industries, including oil and gas exploration and production and offshore wind, operating and managing a fleet of offshore support vessels including platform supply vessels, fast support vessels, and liftboats.

Exploration products for the marine seismic survey industry.

Seamar Divers, Inc. provides subsea construction and inspection services to the oil and gas industry in the Gulf of Mexico and Latin America, operating at depths up to 300 feet. Services include pipeline installation, platform inspections, non-destructive testing, and underwater welding.

Seitel Incorporated provides land-based seismic data acquisition, processing, and licensing to oil and gas exploration and production companies across North America, maintaining a proprietary library of subsurface geophysical data accumulated since 1982.

Engineering and technical personnel for Latin American O&G and petrochemical.

Shaw Pipeline Services provides pipeline inspection and non-destructive testing services, including ultrasonic testing, radiography, and failure analysis, to oil and gas clients worldwide. The company also offers valve repair and supports pipeline installation projects from award through to completion.

Shell Oil Company is a global integrated energy company engaged in upstream oil and gas exploration and production, downstream refining and chemicals, liquefied natural gas, and emerging low-carbon energy solutions, operating across more than 70 countries.

Develops new technologies for productivity and efficiency.

Smart Pipe Company, LP develops and manufactures composite pipeline rehabilitation systems, including the XPL-300, designed for high-pressure applications up to 1,440 psi in pipelines 4 to 16 inches in diameter, using a portable factory for continuous on-site installation.

Engineering, drill bits, downhole tools and drilling fluids.

Sonardyne Inc. provides underwater technology systems for the oil and gas, defense, and scientific sectors, including inertial navigation, sonar imaging, acoustic positioning, and wireless communications solutions for use with crewed vessels, ROVs, and autonomous underwater vehicles.

Songa Offshore is an international midwater drilling contractor specializing in harsh environment operations, particularly in the North Atlantic basin. The company provides offshore drilling services across a fleet of midwater rigs.

Remotely operated vehicles (ROV) and tooling systems.

Southwest Oilfield Products, Inc. manufactures mud pumps and well pumps for oil and gas exploration and production companies, and provides repair and service for well service equipment including coil tubing units, snubbing units, nitrogen pumping units, and valves.

Fluid-handling systems for water, fuel and crude oil.

Independent energy production company.

Acquires, operates and abandons mature Gulf of Mexico properties.

Stabil Drill provides rental tools for downhole bottomhole assemblies, including stabilizers, non-magnetic drill collars, hole openers, shock tools, and reamers. The company operates manufacturing and machining facilities along the Gulf Coast, in Atlantic Canada, and Scotland.

Stewarts-USA manufactures and supplies pressure gauges, temperature gauges, subsea gauges, caisson gauges, test gauges, diaphragm seals, valves, and manifolds, serving industrial applications from Houston, Texas.

Stress Engineering Services, Inc. provides engineering design, analysis, and testing services across oil and gas, chemical, pipeline, and power sectors, with expertise in mechanical engineering, failure analysis, materials and metallurgy, and finite element analysis.

Subsea tieback, pipeline design and field-architecture development.

Subsea Solutions provides third-party auditing, maintenance, and testing of subsea well-control equipment, including conventional, MUX, and intervention BOP systems. The company also offers rig acceptance surveys, letters of verification, and subsea well-control training for drilling contractors and operators worldwide.

Exploration, drilling and production wellhead equipment.

Specialist supplier of manpower resources to the global O&G industry.

T. H. Hill Associates, Inc. provides quality assurance, engineering, and training services focused on reducing the risk of structural and mechanical failure in downhole drilling equipment, including inspection, nondestructive testing, and assembly oversight for oil and gas drilling operations worldwide.

T3 Energy Services manufactures, remanufactures, and repairs high-pressure oil and gas equipment, including valves, chokes, actuators, blowout preventers, manifolds, and wellhead equipment. The company serves exploration, production, pipeline, petrochemical, and drilling industries, with additional capabilities in subsea products, accumulators, and custom coatings.

Talon Technical Sales is a manufacturers representative specializing in industrial instrumentation for physical measurement, including temperature, pressure, flow, force, torque, moisture, and vibration, serving the oil and gas, petrochemical, and related industries across Texas, Oklahoma, and Louisiana.

TAM International, Inc. provides inflatable packers, swellable packers, and related downhole products and services to the oil and gas industry, supporting completion and production operations. The company is headquartered in Houston and serves customers worldwide.

Coating systems protecting pipelines and fittings against corrosion.

Engineering design and custom molded elastomeric seals and packing.

Custom high-performance thermoplastic components and spring-energized seals.

Hydraulic and pneumatic hose and fitting design, manufacture and repair.

Texma Petroleum Machinery manufactures API 7K and ISO 9001 certified OEM-quality replacement fluid end parts and expendables for mud pumps, including crossheads, liners, pistons, crankshafts, valves, and handling tools.

TGS-NOPEC Geophysical provides seismic data acquisition, processing, and depth imaging services to energy companies, supporting exploration and production activities worldwide. The company maintains an extensive geophysical data library and offers reservoir characterization and subsurface data management solutions.

The REACH Group is a global consulting and coaching firm that helps upstream oil and gas companies implement performance optimization, safety culture, leadership development, and human performance improvement programs.

Thrustmaster of Texas, Inc. designs and manufactures heavy-duty marine propulsion systems, including tunnel thrusters, retractable thrusters, azimuth thrusters, waterjets, and portable dynamic positioning systems, with more than 1,000 units in service worldwide.

Hydraulic and pneumatic bolting solutions and fasteners.

U.S.-domiciled oil and gas drilling contractor headquartered in Houston.

Development and industrialization of oil & gas related technology.

Total Safety U.S., Inc. provides industrial safety solutions including safety equipment supply, gas detection services, specialized safety personnel, medical management, and industrial communications equipment rental and sales to clients across multiple regions.

Transocean is an offshore contract drilling company specializing in deepwater and harsh environment drilling services for oil and gas wells. The company operates a fleet of 37 mobile offshore drilling units, including ultra-deepwater floaters and harsh environment floaters.

Triple S Steel Supply is a family-owned steel service center distributing structural steel, tubing, and specialty metals across more than 50 North American and Colombian locations, with value-added processing services for customers in construction, manufacturing, and infrastructure.

Manufacturer and supplier of drilling-rig related equipment.

Tubacex America Inc. is a manufacturer and distributor of seamless stainless steel and high-nickel alloy tubing, serving the oil and gas, petrochemical, aerospace, and energy industries through two U.S. manufacturing facilities and multiple service centers.

Tube Supply Inc. is a Houston-based supplier of tube and bar products for the oil and gas industry, specializing in materials for wellhead and downhole applications including blast joints, pup joints, coupling stock, liner hangers, and valve choke bodies.

Tubular Instrumentation & Controls supplies instrumentation, measurement and control systems, valves, actuators, and filtration products to industries including oil and gas, mining, power, and food and beverage, and also provides calibration services.

U.S. Bolt Manufacturing, Inc. produces engineered bolting and forged fasteners for critical and safety-related applications, including deepwater offshore drilling equipment, turbomachinery, pressure vessels, and navy ships. The Houston-based company holds API 20E and API 20F monogram licenses and ISO 9001 certification.

Full-service design and manufacturing for the oilfield service industry.

Universal Compression provides natural gas compression equipment and services, including gas processing and treating, integrated power generation, and produced water treatment. The company also offers aftermarket parts and field services to support upstream and midstream oil and gas operations.

UTEX Industries designs and manufactures engineered fluid sealing products, including custom rubber and urethane molded components, mechanical seals, gaskets, and well service products for the oil and gas, aerospace, water distribution, and industrial markets.

Vantage Drilling is an international offshore drilling contractor that operates and manages a fleet of ultra-deepwater drillships and high-specification jack-up rigs, providing contract drilling services to oil companies and rig owners across West Africa, the Middle East, India, and Southeast Asia.

Wellheads, Xmas trees, BOPs and subsea/topside systems.

Vortex Ventures manufactures high-performance mixing equipment for oil and gas, chemical processing, and related industries. Their products handle slurry, brine, drilling mud, and bulk mixing applications, with custom mixer design and pit agitation solutions also available.

LWD/MWD, directional drilling and downhole drilling motors.

Specialty seismic processing firm.

Weatherford International is a global oilfield services company providing drilling, completion, intervention, evaluation, and production services to the energy industry. The company operates across approximately 75 countries with around 17,000 employees and 350 operating locations worldwide.

Well Control School provides competency-based well control training and certification for onshore and offshore operations, serving operators, drilling contractors, and well-servicing companies. The company has trained more than 85,000 students globally through facilities in Houston, Lafayette, and Laurel, Mississippi.

Performance-improving results for operators and drilling contractors.

Well Flow International LLC provides wellbore cleanup chemicals, well intervention chemicals, and stimulation chemicals, along with associated downhole tools, to oil and gas operators worldwide. The company serves markets across the Middle East, North Sea, North America, and West Africa.

Online software for the oil and gas industry.

Non-rotating drillpipe and casing-tubular protectors.

Westney Consulting Group provides independent advisory and management consulting services to leaders in the energy, chemicals, power, and mining industries, focusing on capital project strategy, estimate validation, project assurance, and organizational development to improve project outcomes.

Whitefield Plastics is a Houston-based urethane manufacturer serving the oil and gas industry. The company produces urethane components and materials used in upstream, midstream, and downstream applications.

Wild Well Control provides emergency well control response, blowout intervention, and related engineering services to the oil and gas industry worldwide, responding to more than 80% of global blowouts. The company also offers well integrity management, directional drilling, subsea engineering, rental equipment, and IADC training.

Wilkens Weather Technologies, now part of DTN, provides marine and offshore weather forecasting services to oil and gas operators. The company delivers real-time meteorological data and expert analysis to support safe and efficient planning of drilling, production, and marine operations.

Tools for use with directional drilling equipment.

Design, manufacture and testing of drill-through well-control equipment.

Reservoir information to optimize production and minimize damage.

Wood Group Pressure Control designs and manufactures pressure control equipment for oil and gas operations, supporting pipeline, production, and refining applications. The company provides automation and control solutions alongside engineering services across energy markets.

Engineering consulting and software development.

ExxonMobil is a major integrated oil and gas company engaged in the exploration, production, refining, and chemical manufacturing of petroleum and natural gas resources, with ongoing investment in emissions-reduction technologies across its operated assets.

Occidental Petroleum (Oxy) is an international oil and gas exploration and production company with operations primarily in the United States, the Middle East, and North Africa, including major positions in the Permian Basin, DJ Basin, and Gulf of Mexico.

Phillips 66 refines and markets petroleum products including gasoline, diesel, jet fuel, and lubricants, and also gathers and processes natural gas and NGLs, and manufactures petrochemicals, polymers, and plastics.

Marathon Oil Corporation (NYSE: MRO) is an independent oil and natural gas exploration and production company headquartered in Houston, Texas, with a focus on U.S. resource plays including oil sands mining operations.

Merged into Devon Energy in 2026.

Coterra Energy is a diversified upstream oil and natural gas exploration and production company operating across multiple U.S. basins, with activities spanning drilling, acquisition, and seismic data processing, as well as midstream operations.

APA Corporation, through its subsidiaries including Apache Corporation, explores for and produces oil and gas across operations in the United States, United Kingdom, Egypt, and Suriname.

Callon Petroleum is an independent oil and natural gas exploration and production company operating in the Permian Basin and South Texas, focused on acquiring and developing high-return drilling locations through horizontal and directional drilling techniques.

Kinder Morgan owns and operates approximately 83,000 miles of pipelines and 141 terminals across North America, transporting natural gas, crude oil, refined products, renewable fuels, and CO2, while providing natural gas storage and terminal handling services for a range of commodities.

Enterprise Products Partners is one of North America's largest midstream energy companies, providing transportation, storage, gathering, fractionation, processing, and terminaling services for natural gas, refined products, liquefied petroleum gases, and petrochemicals through an extensive pipeline network.

Plains All American Pipeline owns and operates midstream energy infrastructure across the U.S. and Canada, providing pipeline transportation, terminalling, storage, and gathering services for crude oil, natural gas liquids, and natural gas.

Targa Resources is a large independent midstream infrastructure company that gathers, processes, and transports natural gas and natural gas liquids, connecting domestic production to U.S. and international markets through its pipeline and storage network.

Western Midstream operates as a midstream services company, gathering, processing, and transporting natural gas, crude oil, and produced water for upstream producers. The company manages pipeline and processing infrastructure to move energy commodities from production sites to downstream markets.

CITGO Petroleum owns and operates three crude oil refineries in Louisiana, Illinois, and Texas, with a combined capacity of approximately 807,000 barrels per day, and distributes transportation fuels, lubricants, and petrochemicals through terminals, pipelines, and roughly 4,000 branded retail outlets.

LyondellBasell is a global chemicals and refining company that produces polymers, polyolefins, and petrochemical intermediates. The company also licenses process technologies and manufactures fuels and plastics for industries including transportation, packaging, and healthcare.

Patterson-UTI Energy provides drilling services and technology, completion solutions, drill bit solutions, directional drilling, and wellbore guidance services to the oil and gas industry, operating through a family of companies including NexTier, Ulterra, and MS Directional.

Nabors Industries operates one of the world's largest land drilling rig fleets and provides offshore drilling rigs, directional drilling services, and automation technologies across approximately 20 countries.

Precision Drilling is a drilling contractor offering a fleet of high-performance drilling rigs, well service rigs, and supporting technologies to oil and gas operators, along with camps, rental equipment, and technical services.

SLB (Schlumberger) is an oilfield services and technology company providing solutions across drilling, production, subsea, and stimulation operations, with capabilities spanning mud logging, carbon capture and storage, geoenergy, and AI-driven automation for the global energy industry.

NOV Inc. designs and manufactures equipment, components, and technologies for oil and gas drilling, well completion, and production operations. The company serves operators and contractors worldwide with products spanning downhole tools, drilling rigs, and rig systems.

ChampionX provides chemistry programs, drilling technology, artificial lift solutions, and automation technologies to the oil and gas industry, serving customers globally across production, well construction, midstream, and digitized operations segments.

TechnipFMC is a Houston-based oilfield services and technology company specializing in subsea and surface technologies for the energy industry, providing integrated engineering, products, and services to support upstream oil and gas development and energy transition projects.

Expro provides oilfield services spanning well construction, well flow management, subsea well access, and well integrity and intervention, and incorporates the capabilities of Frank's International. The company offers technologies including annulus intervention, well testing, Powerchokes, and subsea equipment.

Noble Corporation is an offshore contract drilling company that owns and operates a fleet of drilling units serving the oil and gas industry, with a focus on ultra-deepwater and high-specification jackup drilling projects worldwide.

Cactus Inc. designs, manufactures, sells, and rents engineered wellheads and pressure control equipment for onshore unconventional oil and gas wells, supporting drilling, completion, and production phases. Its products include the SafeDrill wellhead system, frac stacks, zipper manifolds, and production trees.

Select Water Solutions provides water management and chemical technology services to oil and gas operators across all major U.S. basins. The company handles the full water lifecycle, including sourcing, transfer, treatment, recycling, and disposal, through its water solutions, water infrastructure, and chemical technologies divisions.

Aris Water Solutions is now part of Western Midstream Partners, a midstream energy company that gathers, processes, and transports natural gas, NGLs, and water. The combined company supports oil and gas producers across multiple U.S. basins.

Solaris Oilfield Infrastructure provides proprietary power generation and distribution solutions along with proppant logistics equipment and services to clients in the energy, data center, commercial, and industrial sectors.

Forum Energy Technologies manufactures and supplies oilfield equipment for drilling, well construction, completion, and stimulation operations, as well as subsea technologies and valve solutions, serving oil, gas, and renewable energy customers across major production regions worldwide.

Emerson provides automation solutions, software, and technology across industries, offering products including distributed control systems, safety instrumented systems, measurement instrumentation, valves, actuators, and flow measurement tools for industrial applications.

Measurement and sensing product lines serving oil and gas process and pipeline applications.

Houston-based diversified oilfield-services provider (directional drilling, pressure pumping, wireline).

**SEG** Founded in 1930 and headquartered in Houston, SEG is a global professional organization that advances geophysical science through education, professional development, and collaboration, with additional offices in Tulsa, Dubai, and Beijing.

**CGG** CGG is a geoscience and earth data company founded in 1931 that provides seismic data, subsurface imaging, geological services, and sensing and monitoring solutions to the oil and gas industry.

Quorum Software provides business management and accounting software for oil and gas companies, offering solutions that connect operational workflows, data systems, and reporting functions across exploration, production, and gas plant operations in global energy markets.

Energy software for land, accounting and production management used across Texas operators.

Validere provides an enterprise intelligence platform for energy companies, integrating operational data, automation, and predictive analytics to support decision-making and compliance management. The platform serves more than 50 North American energy companies across midstream and other segments.

Bureau Veritas provides testing, inspection, and certification services to companies in the oil and gas, marine, offshore, and industrial sectors, helping clients meet quality, health, safety, and environmental standards across global operations.

Acuren is a North America-based provider of asset integrity services, offering nondestructive testing, inspection, and certification to industrial clients. The company supports recurring maintenance needs across oil and gas and other sectors, with services often performed at customer locations.

Team Inc. provides asset integrity management and performance solutions, including non-destructive testing, leak detection, on-stream repair, corrosion control, heat treating, and valve testing services for pipeline, aviation, and other industrial sectors.

Asset-protection and inspection technology firm with major Gulf Coast refining and pipeline operations.

KBR provides engineering, science, and technology solutions to government and industrial clients across sectors including hydrocarbons, cybersecurity, and program management, with a focus on sustainable technology and consulting services.

**Jacobs** *Engineering & Consulting* Jacobs provides engineering, consulting, and technical services across more than 50 countries, supporting infrastructure, cybersecurity, space, and energy sectors. The firm employs over 60,000 people worldwide. Tags: Architecture & Planning, Power & Energy, Information Technology and Services, Cyber, Software Engineering, Systems Engineering, Scientific Research & Testing, Operations and Maintenance

S&B Engineers and Constructors provides engineering, procurement, and construction (EPC) services for large-scale industrial facilities, supporting clients across midstream, power, and government sectors with services ranging from feasibility studies and pipe fabrication to plant maintenance and commissioning.

Wood provides engineering, consulting, and operations solutions to the energy and materials sectors, supporting projects across pipeline, refining, chemicals, LNG, and production facilities, with additional capabilities in automation, control systems, and digitalisation.

Audubon Companies provides engineering, procurement, construction, consulting, fabrication, and technical field services to the energy, chemicals, power, and industrial markets, supporting projects across the full asset life cycle from conceptual design through decommissioning.

DistributionNOW (DNOW) is a global distributor of pipe, valves, fittings, pumps, and industrial equipment serving upstream, midstream, downstream, and industrial markets. The company also provides supply chain solutions, technical product expertise, and digital procurement tools from its Houston headquarters.

MRC Global is a supply chain solutions company specializing in the distribution of pipe, valves, and fittings to energy and industrial customers. The company provides valve automation, valve modification, project services, and systems integration support across global operations.

Texas Pipe & Supply distributes carbon and stainless steel pipe, fittings, and flanges from its Houston headquarters, operating ten stocking locations across the United States.

OGGN (Oil and Gas Global Network) operates a podcast network focused on the oil, gas, and energy industry, producing multiple active shows covering topics such as upstream operations, HSE, energy transition, supply chain, and industry leadership.

Hart Energy is a Houston-based media and research company serving the oil and gas industry since 1973, providing news, data, analysis, events, and custom content focused on upstream, shale, midstream, M&A, and emerging energy sectors.

Rigzone is an online platform serving the oil and gas industry with news, job listings, and industry data. It also provides recruitment solutions connecting employers with a database of over two million industry professionals worldwide.

Airswift is a global staffing and workforce solutions firm serving the energy, technology, and engineering sectors. The company provides recruitment, executive search, employer of record, and managed solutions services, operating across more than 60 offices worldwide.

Brunel is a global staffing and workforce solutions firm serving the energy, mining, life sciences, and technology sectors, with more than 120 offices and 12,000 specialists worldwide providing contract staffing, project consulting, and global mobility services.