Post Oak Energy Capital

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

Layne Water Midstream Holdings, LLC specializes in providing comprehensive water services to upstream oil and gas companies, primarily in the Delaware and Midland basins. Founded in 2016 and based in The Woodlands, Texas, the company focuses on water collection, recycling, and disposal, offering solutions that include produced water gathering, source water delivery, and water treatment. Layne Water Midstream operates significant infrastructure for water sourcing and management, underpinned by exclusive long-term contracts with key customers and landowners, including state organizations. This strategic positioning enables the company to support its clients effectively in their upstream operations and aims for further growth in the region.

Layne Water Midstream Holdings, LLC specializes in providing comprehensive water services to upstream oil and gas companies, primarily in the Delaware and Midland basins. Founded in 2016 and based in The Woodlands, Texas, the company focuses on water collection, recycling, and disposal, offering solutions that include produced water gathering, source water delivery, and water treatment. Layne Water Midstream operates significant infrastructure for water sourcing and management, underpinned by exclusive long-term contracts with key customers and landowners, including state organizations. This strategic positioning enables the company to support its clients effectively in their upstream operations and aims for further growth in the region.

Upcurve Energy LLC is an oil and gas company based in Houston, Texas, specializing in the exploitation of mature unconventional plays. Founded in 2015, the company focuses on acquiring acreage and existing wells, optimizing production through techniques such as recompletions and infill development. Upcurve Energy has extensive experience in key regions, including the Eagle Ford, Haynesville, Bakken, and Marcellus shale formations. The company pursues acquisitions of producing wells and acreage through cash purchases and drill and recompletion farm-ins, leveraging its expertise in horizontal completions and development in prolific shale areas to enhance production efficiency.

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 formulating and manufacturing a range of customized specialty chemicals for the oil and gas industry. Their product offerings include surfactants, foaming agents, biocides, paraffin inhibitors, and emulsion breakers, which are essential for oilfield production and processing. In addition to manufacturing, the company provides technical support and comprehensive monthly monitoring and reporting to help clients optimize chemical usage, identify problem areas, and ensure proper dosing, ultimately justifying the costs associated with their chemical programs. Refinery Specialties serves various sectors, including production, pipeline, refinery, and gas plants, focusing on delivering cost-effective solutions tailored to meet industry needs.

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 formulating and manufacturing a range of customized specialty chemicals for the oil and gas industry. Their product offerings include surfactants, foaming agents, biocides, paraffin inhibitors, and emulsion breakers, which are essential for oilfield production and processing. In addition to manufacturing, the company provides technical support and comprehensive monthly monitoring and reporting to help clients optimize chemical usage, identify problem areas, and ensure proper dosing, ultimately justifying the costs associated with their chemical programs. Refinery Specialties serves various sectors, including production, pipeline, refinery, and gas plants, focusing on delivering cost-effective solutions tailored to meet industry needs.

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 a comprehensive range of services that includes workover, plug and abandonment, fluid management, hydraulic fracturing, well-servicing rigs, tank rentals, and fluid transfer. Through these services, Bayou Well Services supports various aspects of oil and gas production, ensuring efficient operations for its clients in the energy sector.

Chaparral Energy, Inc. is engaged in the acquisition, exploration, development, production, and operation of oil and natural gas properties, primarily in Oklahoma, United States. The company focuses on selling crude oil, natural gas, and natural gas liquids to refineries and gas processing plants. It holds approximately 210,000 net surface acres in the Mid-Continent region, with about 122,000 net acres located in the STACK play across Canadian, Kingfisher, and Garfield counties. As of December 31, 2019, Chaparral's estimated proved oil and natural gas reserves were 96.6 million barrels of crude oil equivalent, and it had interests in 2,782 gross producing wells, including 866 that are company-operated. Founded in 1988, the company is headquartered in Oklahoma City, Oklahoma.

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 in the United States. The company's primary operations include interests 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 partnership 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.