Oil & Gas Companies in Texas

Integrated supermajor headquartered in the Houston area; one of the largest publicly traded oil and gas companies in the world, with major Permian Basin operations.

Houston-based independent exploration and production company, one of the largest pure-play E&P operators globally, with extensive Permian and Eagle Ford acreage.

Houston-headquartered international oil and gas operator with a leading Permian Basin position and a carbon-management business.

Houston-based diversified energy manufacturing and logistics company spanning refining, midstream, chemicals and marketing.

Acquired by ConocoPhillips in 2024.

Former Houston-based independent E&P company with Eagle Ford, Permian, Bakken and Oklahoma assets; acquired by ConocoPhillips in November 2024 and no longer publicly traded.

Houston-headquartered independent producer, a pioneer of the Eagle Ford shale and a major Permian operator.

Midland-based independent oil and gas company focused on the Permian Basin; acquired Endeavor Energy Resources in September 2024.

Acquired by ExxonMobil in 2024.

Irving-based independent and a foundational Permian Basin operator (acquired by ExxonMobil in 2024).

Merged into Devon Energy in 2026.

Houston-based independent producer formed from the Cimarex and Cabot merger, with Permian, Anadarko and Marcellus assets.

Midland-based independent operator focused on the Delaware sub-basin of the Permian.

Houston-based independent E&P company with Permian, Egypt, North Sea and Suriname interests; acquired Callon Petroleum in April 2024.

Denver-based independent producer with Permian and Montney positions; it closed its acquisition of NuVista Energy in February 2026.

Dallas-based independent producer focused on the Delaware Basin of the Permian, with a midstream arm.

Denver-based independent E&P company with Permian, South Texas Eagle Ford and Rocky Mountain assets; merged with Civitas Resources in January 2026.

Acquired by Crescent Energy in 2025.

Tulsa and Texas-operating independent producer (formerly Laredo Petroleum) focused on the Permian Basin.

Acquired by APA Corporation in April 2024.

Former Houston-based independent operator with Delaware and Midland Basin assets; acquired by APA Corporation in April 2024.

Frisco-based natural gas producer and a leading operator in the Haynesville shale of East Texas and Louisiana.

Acquired by Diamondback Energy in 2024.

Midland-based private operator, one of the largest privately held Permian producers (merged with Diamondback).

Midland-based private independent oil and gas operator with a long Permian Basin history.

Acquired by Occidental in August 2024.

Former Midland-based private Permian operator; acquired by Occidental in August 2024.

Houston-based energy infrastructure company operating one of the largest natural gas pipeline and terminals networks in North America.

Dallas-based midstream company operating a vast network of natural gas, NGL, crude and refined-products pipelines.

Houston-based midstream master limited partnership providing NGL, crude, natural gas and petrochemical services along the Gulf Coast.

Houston-based midstream company focused on crude oil and NGL transportation and storage, with major Permian gathering.

Houston-based midstream provider of natural gas gathering, processing and NGL services, heavily weighted to the Permian.

Natural gas infrastructure company with major Texas pipeline and processing assets (HQ Tulsa, large Texas footprint).

Midstream company with extensive NGL and natural gas systems serving the Permian and Mid-Continent.

Acquired by Phillips 66 in 2023.

Denver-based natural gas gathering and processing operator; Phillips 66 bought the public units and took full control in June 2023.

Houston-area midstream partnership providing gathering, processing and transportation, largely for Occidental and Permian producers.

Acquired by Sunoco LP in May 2024.

Former San Antonio-based crude and refined-products pipeline and storage operator; acquired by Sunoco LP in May 2024.

Dallas-based fuel distribution and midstream partnership; acquired NuStar Energy in May 2024.

San Antonio-based independent petroleum refiner and marketer, one of the largest refiners in the world.

Koch-owned refining and chemicals company operating major refineries on the Texas Gulf Coast (Corpus Christi).

Houston-based refiner and marketer operating Gulf Coast and Midwest refineries.

Houston-based plastics and chemicals company with major Gulf Coast operations. It shut its Houston refinery in February 2025 and no longer refines crude.

Materials-science and petrochemicals company with its largest manufacturing complex in Freeport, Texas.

Tulsa-based drilling contractor with a large US land rig fleet, many operating in Texas, plus international and offshore operations; acquired KCA Deutag in January 2025.

Houston-based drilling contractor and oilfield-services provider with a major land-rig fleet across Texas basins.

Houston-based land and offshore drilling contractor and drilling-technology provider operating globally and across Texas.

Land drilling contractor with a significant Texas rig fleet and Houston operations.

Midland-based oilfield-services and pressure-pumping company focused on the Permian Basin.

Houston-based oilfield-services giant providing drilling, completion, pressure pumping and production services worldwide.

Houston-based energy technology and oilfield-services company spanning drilling, completions, turbomachinery and industrial solutions.

Global oilfield-services and technology company with major Houston operations; acquired ChampionX in July 2025.

Houston-based diversified oilfield-services company providing drilling, evaluation, completion and production technologies.

Houston-based provider of drilling rigs, equipment and technology to the upstream oil and gas industry (formerly National Oilwell Varco).

Acquired by SLB in July 2025.

Former publicly traded oilfield production chemistry, artificial lift and asset integrity company; acquired by SLB in July 2025 in a $7.8 billion all-stock deal.

Hydraulic-fracturing and completion-services provider with major Permian operations (HQ Denver, large Texas footprint).