Post Oak Energy Capital

Tiburon Oil & Gas Partners, based in Houston, Texas, is an energy exploration and production company. It specializes in the responsible development of upstream oil and gas assets, with a current focus on "Lease and Drill" operations in the Utica Shale Basin. The company aims to deliver energy solutions that meet client needs, leveraging innovative practices and sustainable strategies.

Ichthys Energy is an upstream oil and gas company specializing in the aggregation and responsible development of its operated Permian Basin portfolio. The company employs a strategic approach, focusing on both operated and non-operated acquisitions, to drive significant returns in the Permian region.

Layne Water Midstream Holdings, LLC is a water midstream company that specializes in providing comprehensive water solutions to upstream oil and gas companies. Established in 2016 and headquartered in The Woodlands, Texas, the company operates primarily in the Delaware and Midland basins. Its services include produced water gathering and disposal, source water delivery, produced water redelivery, and water treatment and recycling. Layne Water Midstream is distinguished by its exclusive long-term contracts with key customers, landowners, and various state entities, which support its significant infrastructure for water sourcing, transportation, and management. The company is focused on further growth to enhance the operational efficiency of its upstream clients in these vital oil-producing regions.

Layne Water Midstream Holdings, LLC is a water midstream company that specializes in providing comprehensive water solutions to upstream oil and gas companies. Established in 2016 and headquartered in The Woodlands, Texas, the company operates primarily in the Delaware and Midland basins. Its services include produced water gathering and disposal, source water delivery, produced water redelivery, and water treatment and recycling. Layne Water Midstream is distinguished by its exclusive long-term contracts with key customers, landowners, and various state entities, which support its significant infrastructure for water sourcing, transportation, and management. The company is focused on further growth to enhance the operational efficiency of its upstream clients in these vital oil-producing regions.

Tri-C Resources Inc. is an oil and gas exploration and production company based in Houston, Texas. Founded in 1985, the company specializes in the acquisition and development of both domestic and foreign energy properties, with a particular focus on unconventional assets. Tri-C Resources offers comprehensive services that include the drilling, completion, and production of oil and gas wells, utilizing advanced exploration technologies to enhance efficiency and effectiveness in the field. The company primarily operates in the tertiary region of the Texas Gulf Coast, contributing to the energy sector through its strategic initiatives in exploration and production.

UpCurve Energy LLC is an oil and gas company based in Houston, Texas, established in 2015. The company specializes in the exploitation of mature unconventional plays, with a particular focus on the Eagle Ford, Haynesville, Bakken, and Marcellus shale formations. UpCurve Energy is engaged in the acquisition of acreage and existing wells, optimizing production through various methods, including recompletions, new development, and infill drilling. The company employs cash purchases and farm-in agreements to pursue its acquisition strategy, aiming to enhance production in prolific shale formations, particularly through horizontal completions and refracturing techniques.

Rimrock Resource Operating is an oil and energy company focused on the development, acquisition, and exploration of the oil and gas industry. The company provides services including oil transportation, well site management, water transportation, crude oil marketing, contract pumping, service and repair, roustabout, and other small services. Rimrock Resource Operating was formed in 2015 in Tulsa, OK.

Double Eagle Development is engaged in the exploration, development, and production of crude oil and natural gas, primarily operating through horizontal and vertical methods in the Midland Basin of West Texas. Founded in 2008 and headquartered in Fort Worth, Texas, with an additional office in Midland, the company is recognized as one of the largest organic acquirers of acreage in the Permian Basin. Double Eagle focuses on acquiring oil and gas leases, working interests, mineral rights, and royalty interests, and has conducted over 10,000 lease transactions, encompassing more than 1 million acres and exceeding $4.5 billion in transaction value. The company has also been active in other regions across the United States, including South Texas, the Mid-Continent, and the Rockies, thereby establishing a significant presence in the oil and gas sector.

Refinery Specialties is an oilfield service company that specializes in the formulation and manufacturing of customized specialty chemicals for the oil and gas industry. The company provides a range of products, including surfactants, foaming agents, biocides, paraffin inhibitors, and emulsion breakers, aimed at enhancing oilfield production processes. In addition to product development, Refinery Specialties offers technical support and comprehensive monitoring services to ensure effective chemical application and dosage. Their approach focuses on delivering cost-effective treating programs, which include monthly reporting to identify issues and validate the chemical program's expenses. Targeting the oilfield, industrial, and water sectors, Refinery Specialties aims to optimize production and operational efficiency through its specialized chemical solutions.

Cornerstone Petroleum Resources, LLC is an exploration and production company based in Fort Worth, Texas, specializing in the drilling and development of oil-prone shale plays. The company actively engages in the development of shale oil resources through various approaches, including joint ventures, farm-ins, and organic leasing opportunities with existing acreage owners and operators. This focus allows Cornerstone to leverage expertise in horizontal drilling and hydraulic fracturing techniques, positioning itself to serve major oil companies effectively.

Core Appalachia is a privately held, independent producer and processor of natural gas in the Devonian region in Kentucky, Virginia and West Virginia. Headquartered in Charleston, West Virginia, Core’s 5,600 conventional wells are strategically positioned throughout 1.2 million acres of the southwestern Appalachian Basin to meet the growing regional demand for natural gas.

Refinery Specialties is an oilfield service company that specializes in the formulation and manufacturing of customized specialty chemicals for the oil and gas industry. The company provides a range of products, including surfactants, foaming agents, biocides, paraffin inhibitors, and emulsion breakers, aimed at enhancing oilfield production processes. In addition to product development, Refinery Specialties offers technical support and comprehensive monitoring services to ensure effective chemical application and dosage. Their approach focuses on delivering cost-effective treating programs, which include monthly reporting to identify issues and validate the chemical program's expenses. Targeting the oilfield, industrial, and water sectors, Refinery Specialties aims to optimize production and operational efficiency through its specialized chemical solutions.

Bayou Well Services is a provider of oilfield services operating across the United States. The company specializes in pressure pumping, fluid logistics, and rental tools, offering comprehensive solutions for various oil and gas well operations. Its service portfolio includes workover, plug and abandonment, fluid management, hydraulic fracturing, well-servicing rigs, tank rentals, and fluid transfer. Through its diverse offerings, Bayou Well Services supports the efficiency and effectiveness of oilfield operations.

Chaparral Energy, Inc. is an oil and gas company based in Oklahoma City, Oklahoma, focusing on the acquisition, exploration, development, production, and operation of oil and natural gas properties in the United States, primarily in Oklahoma. It operates across approximately 210,000 net surface acres, with a significant portion—about 122,000 net acres—located in the STACK play within Canadian, Kingfisher, and Garfield counties. The company sells crude oil, natural gas, and natural gas liquids mainly to refineries and gas processing plants. As of the end of 2019, Chaparral Energy reported estimated proved reserves of approximately 96.6 million barrels of crude oil equivalent and held interests in 2,782 gross producing wells, with 866 of those being company-operated. Founded in 1988, the company has positioned itself as a key player in the oil and gas sector in the Mid-Continent region.

Atlas Energy Group, LLC, established in 2011 and headquartered in Fort Worth, Texas, is engaged in the development and production of natural gas, crude oil, and natural gas liquids. The company's primary operations are in the Eagle Ford Shale in southern Texas, the Marble Falls play in the Fort Worth Basin in northern Texas, and the Mississippi Lime play in northwestern Oklahoma. Additionally, Atlas Energy invests in master limited partnerships and qualifying energy-related businesses and assets.

Balcones Energy is a development company designed to invest in the oilfield service and equipment sector with a particular focus on compression and artificial lift. The company's initial investment was in Precision Compression Services, which develops and produces compressor packages geared towards later life, low pressure, and/or low volume wells with an objective of lowering costs and improving well performance.