Post Oak Energy Capital

Layne Water Midstream (“LWM”) is a full cycle water midstream business providing upstream oil and gas companies with water sourcing, disposal and recycling infrastructure and services in the Delaware and Midland Basins. Anchored by exclusive long-term contracts with key customers, landowners, the State of Texas General Land Office and the State of Texas University Lands organization, LWM operates significant source water, water transportation and produced water management infrastructure and is committed to further growth to support its upstream customers in the Delaware and Midland Basins.

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 Energy Holdings (together with its affiliates and subsidiaries, “Double Eagle,”) principal business is crude oil and natural gas exploration, development and production through horizontal and vertical operations in the Midland Basin of West Texas. The company also focuses on acquiring oil and gas leases, working interest, mineral rights, and royalty interests throughout the Permian Basin. Double Eagle is one of the largest, if not the largest, organic acquirers of acreage in the Permian Basin in West Texas, and has historically been active across the United States in South Texas (Eagle Ford), the Mid-Continent (Mississippian, SCOOP, Penn Shales) and the Rockies (DJ Basin, Powder River Basin). Since forming Double Eagle in 2008, the Company has executed on over 10,000 individual lease transactions, totaling more than 1 million acres and more than $4.5 billion in transaction value. The company is headquartered in Fort Worth, Texas, with an additional office in Midland, Texas.

Refinery Specialties is an oilfield service company that formulates, manufactures, and provides technical service for the use of process and production treating chemicals for the oilfield, industrial, and water industries, including production, pipeline, refinery, and gas plants. The company strives to provide cost-effective treating programs with comprehensive monthly monitoring and reporting to identify problem areas, ensure correct chemical dosage and justify the cost of the chemical program.

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.

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 is a limited liability company based in Philadelphia, Pennsylvania, specializing in the development and production of natural gas and, to a lesser extent, crude oil. The company primarily operates in the Appalachian Basin, focusing on the extraction of natural gas and natural gas liquids. In addition to its production activities, Atlas Energy sponsors and manages tax-advantaged investment partnerships, utilizing these investments to finance the exploration and development of its acreage.