Aspen Midstream

Initial Investment:

Aspen Midstream is a Dallas, Texas-based midstream company primarily focused on the development of natural gas gathering, treating, processing, and transportation assets. Aspen’s Austin Chalk system currently spans Fayette, Washington, Austin and Waller counties in Texas.

3811 Turtle Creek Blvd.
Suite 770
Dallas, Texas 75219
(469) 213-3294


Brazos Midstream

Initial Investment:

Brazos Midstream is a full-service, private midstream company that provides innovative solutions across the midstream value chain to producer customers in the Permian Basin.

777 Main Street, Suite 3700
Fort Worth, Texas 76102

Candor Midstream logo

Candor Midstream

Initial Investment:

Candor Midstream owns and operates the SCOOP-to-North-Texas Rich Gas Gathering Pipeline System, which originates in northern Carter County, Oklahoma, and extends south across the Oklahoma-Texas border before it terminates at processing facilities located in Bridgeport, Texas. Its strategic location in the heart of Oklahoma’s SCOOP play provides regional producers with an immediate outlet to premium processing markets in north Texas, bolstering producer economics. The pipeline is managed internally by members of the team at EnCap Flatrock Midstream.

(210) 494-6777

Cardinal Midstream Partners

Initial Investment:

Cardinal Midstream Partners is an independent midstream company formed in 2022 to focus on the acquisition and development of natural gas gathering and processing opportunities, as well as congruent carbon capture and sequestration. 

8080 North Central Expressway
Suite 1090
Dallas, Texas 75206


Clearfork Midstream

Initial Investment:

Clearfork Midstream is a Fort Worth, Texas-based midstream company primarily focused on the development of natural gas gathering, treating, and transportation assets in the Haynesville/Bossier shale. In February 2022, Clearfork acquired Azure Midstream Energy, which consists of natural gas gathering and treating assets that span across the core areas of the Haynesville Shale formation.

5049 Edwards Ranch Rd, 4th Floor
Fort Worth, TX 76109
(817) 752-5305 


Edgewater Midstream logo

Edgewater Midstream

Initial Investment:

Edgewater Midstream is a Houston, Texas-based midstream company focused on the development of U.S. crude oil and refined products midstream assets. Edgewater's strategy is to leverage their relationships and experience to build a premier midstream service company focused on crude oil and refined products terminalling, transportation, storage, and related assets.

1300 Post Oak Boulevard, Suite 550
Houston, Texas 77056
(346) 348-0830 


Greenfield Midstream logo

Greenfield Midstream

Initial Investment:

Greenfield Midstream is an independent energy company formed in 2017 and focused on the value-driven development of midstream infrastructure across North America. Greenfield offers natural gas gathering, processing, treating and compression; crude oil gathering and transportation; water handling; and product marketing.

In January 2018 Greenfield established Black Diamond Gathering, LLC, a joint venture with Noble Midstream Partners LP to provide crude oil gathering and storage services to producers in the Denver Julesberg Basin. 

1790 Hughes Landing Blvd, Suite 110 
The Woodlands, TX 77380
(713) 860-7040


Iron Horse logo

Iron Horse Midstream

Initial Investment:

Iron Horse Midstream provides oil and gas producers with a complete array of midstream services including natural gas gathering and transmission, natural gas processing, crude oil gathering, centralized compression facilities, condensate stabilization, vapor recovery and natural gas treating. In addition to Iron Horse’s headquarters in Dallas, the company operates in the SCOOP/STACK/Merge with a field office in Mustang, Oklahoma.

8150 North Central Expressway
Suite 1725
Dallas, Texas 75206
(214) 468-0700


Ironwood Midstream Energy Partners II logo

Ironwood Midstream Energy Partners II

Initial Investment:

Ironwood Midstream Energy Partners II is an independent energy company that provides a full suite of midstream services to oil and gas producers across North America, with a focus on South and West Texas. Headquartered in San Antonio, Ironwood II is led by a team of seasoned industry professionals who together have more than 110 years of experience in the energy industry.

In early December 2019, Ironwood II acquired midstream assets located in South Texas from Twin Eagle Gardendale Pipeline, LLC, a subsidiary of Twin Eagle Holdings N.A., LLC (“Twin Eagle”). In November 2021, Ironwood expanded its crude oil footprint in the Eagle Ford through an asset combination with Nuevo Midstream Dos. Ironwood now manages the Nuevo Dos assets. 

15727 Anthem Parkway, Suite 510 
San Antonio, Texas 78249
(210) 600-9890


M6 Midstream

Initial Investment:

Momentum Midstream has seen nearly two decades of success building complex plants and gathering systems in the most prolific natural gas producing basins in the country.  EFM is proud to partner with Momentum as an equity sponsor in their latest iteration, M6 Midstream.

600 Travis Street
Suite 5500
Houston, TX 77002
(713) 783-3000


Manchester Energy

Initial Investment:

Manchester Energy is an energy-focused private entity formed to acquire, integrate, and build a large scale, diversified energy platform.  The company is led by a seasoned team of energy industry executives with extensive experience across the energy value chain.

3200 Southwest Freeway
Suite 2240
Houston, TX 77027


Moda Midstream II

Initial Investment:

Moda Midstream II is a highly experienced midstream terminaling and logistics company providing independent terminal, storage and distribution solutions to refiners, petrochemical manufacturers, marketers and producers of crude oil, condensate, NGLs, refined products and other bulk liquids.

Nuevo Midstream Dos logo

Nuevo Midstream Dos

Initial Investment:

In November 2021, EFM portfolio company Ironwood Midstream assumed management of the Nuevo Dos assets through an asset combination. Nuevo Dos’ former President and CEO Randy Ziebarth now sits on the Ironwood board. 

Nuevo Midstream Dos was a Houston-based energy company formed in 2015 to design, build and operate world-class midstream systems and deliver superior service to oil and gas producers across North America. Nuevo Dos pursued organic and strategic acquisition opportunities across North America. In March 2019, Nuevo Dos announced the purchase of Republic Midstream, LLC, which owned and operated a crude oil gathering, storage and intermediate transportation system in the Eagle Ford Shale consisting of approximately 100 miles of gathering pipeline feeding a central delivery point with 300,000 barrels of crude oil storage and a six-bay truck station.

Plains All American Pipeline

Initial Investment:

Plains owns and operates an extensive network of pipelines and key midstream infrastructure across North America.

333 Clay Street, Suite 1600
Houston, TX 77002
(713) 646-4100


Rangeland Energy IV logo

Rangeland Energy IV

Initial Investment:

Rangeland Energy IV was formed in April 2022 to continue their pursuit of midstream acquisitions and development opportunities in both conventional and unconventional resource plays across the U.S. and Canada, as well as new opportunities in decarbonized infrastructure.

2150 Town Square Place
Suite 700
Sugar Land, Texas 77479
(281) 566-3000


Stakeholder Midstream logo

Stakeholder Midstream

Initial Investment:

Stakeholder Midstream is an independent midstream oil and gas company based in San Antonio and founded in 2015 to serve producers operating in unconventional shale plays across North America. Current capabilities include in-field natural gas gathering, compression, treating and processing services; innovative NGL solutions; and crude oil gathering, transportation and storage.

Stakeholder's operations currently are focused in the Permian Basin of West Texas and southeast New Mexico. 

19122 US HWY 281 N., Ste 113
San Antonio, Texas 78258
(210) 444-9664


Vecino Energy Partners

Initial Investment:

Vecino Energy is led by an experienced management team representing over 100 years of combined energy experience, with significant experience developing and operating assets in Texas and Oklahoma.

2915 W Bitters Rd
Suite 112
San Antonio, TX 78248 
(210) 728-3000