Adam D. Larson, P.C.

Ensign Natural Resources LLC, a portfolio company of Warburg Pincus and Kayne Anderson, in its acquisition of all of Pioneer Natural Resources USA, Inc.’s Eagle Ford acreage in South Texas

TPG Capital in its approximately $930 million acquisition of Goodnight Midstream, a midstream produced water infrastructure company, from Tailwater Capital

GSO Capital Partners in its $500 million capital commitment to Sequel Energy Group II, a Denver-based oil and gas exploration and production company focused on structured investments in non-operated assets

Nine Energy Service, Inc. in its $493 million acquisition of Magnum Oil Tools International, Ltd.

Warburg Pincus in its $500 million equity commitment to Tall City Exploration III LLC, a Midland-based exploration and production company focused on the Permian Basin

Warburg Pincus in its acquisition of Conquest Completion Services, LLC, a provider of coil tubing services and completion fluids in the Texas and New Mexico oil and gas markets

Pine Brook Road Partners in its line of equity commitment to Ancova Midstream, LLC, an Oklahoma City, Oklahoma-based midstream development company focused on near-the-wellhead oil and gas infrastructure in the U.S. Mid-Continent

Funds managed by Apollo Global Management, LLC in connection with a $200 million equity commitment to Freestone Midstream Holdings, LLC to invest in water assets serving the oil and gas industry with an initial focus on the Powder River Basin in Wyoming

Warburg Pincus in its $300 million capital commitment to Citizen Energy Holdings LLC, an Oklahoma-based oil and gas company

Private midstream company in the buildout of a gathering system and related dedication of acreage in the DJ Basin by an undisclosed producer

Warburg Pincus in its $300 million capital commitment to Ridge Runner Resources LLC, a Midland-based exploration and production company focused on shale developments in the Delaware Basin

Warburg Pincus in its $150 million capital commitment to Stronghold Energy II, a Midland-based oil and gas exploration and production company focused on the Central Basin Platform of the Permian Basin

Warburg Pincus as lead investor in a $350 million convertible preferred equity investment in SemGroup Corporation

Zenith Energy in the sale of a 51 percent membership interest in the Pawnee Crude Oil Terminal in Colorado to Tallgrass Energy Partners, LP

The management team of Lucid Energy Group II in the approximately $1.6 billion sale of Lucid Energy Group II to a joint venture controlled by affiliates of Riverstone and Goldman Sachs

Warburg Pincus in its lead role in a line of equity financing of up to $780 million to ATX Energy Partners, a newly formed oil and gas exploration and production company, and the successor company to Brigham Resources

Warburg Pincus and Zenith Energy U.S., L.P. in the approximately $750 million acquisition of Arc Logistics Partners LP and its general partner, Arc Logistics GP LLC, along with certain related assets held by owners of Arc Logistics Partners

RimRock Oil & Gas and its sponsor, Warburg Pincus, in a $500 million acquisition of upstream assets in the Bakken Shale in North Dakota from Whiting Petroleum Corporation

Alberta Investment Management Company in its commitment to fund, along with a syndicate of financial sponsors, Howard Midstream Energy Partners LLC’s strategic partnership with WPX Energy (NYSE:WPX) to develop crude oil and natural gas gathering and processing infrastructure in the Delaware Basin

Warburg Pincus in connection with the acquisition by its portfolio company, Chisholm Energy, of Delaware Basin oil assets from an undisclosed seller

Warburg Pincus in its $500 million capital commitment to Chisholm Energy, a Fort Worth-based oil and gas exploration and production company focused on the Delaware basin

Warburg Pincus in connection with the $875 million initial public offering of its portfolio company, Antero Midstream GP LP, the general partner of Antero Midstream Partners LP

Warburg Pincus in its capital investment in Hawkwood Energy, a Denver-based independent upstream oil and gas company formed in 2012 with Warburg Pincus and Ontario Teachers’ Pension Plan as lead investors, in connection with Hawkwood Energy’s acquisition of assets owned by Halcon Resources in a transaction valued at approximately $500 million

Quintana Energy Services, LP., an oilfield services company, in connection with its out-of-court recapitalization and the restructuring of its revolving credit facility agented by Amegy Bank

Pine Brook on its co-led $600 million line of equity investment in Admiral Permian Resources, LLC with Riverstone Holdings

Warburg Pincus in its $500 million capital commitment to Trident Energy, a newly-formed oil and gas exploration and production company focused on international assets

GSO Capital Partners in its $500 million capital commitment to Sequel Energy Group, a Denver-based oil and gas exploration and production company focused on structured investments in non-operated assets

Alberta Investment Management Corporation on its agreement to acquire, on behalf of certain of its clients, an ownership stake in Howard Energy Partners from EnLink Midstream Partners, LP

Warburg Pincus on the $2.43 billion sale by its portfolio company, Brigham Resources LLC, of Permian Basin leasehold interests and related assets to Diamondback Energy, Inc

An undisclosed buyer in connection with the purchase of certain of Gastar Exploration Inc.’s oil and gas leasehold interests located primarily in northeast Canadian County and also in southeast Kingfisher County, Oklahoma for approximately $71 million

KKR in its partnership with Venado Oil and Gas, LLC to consolidate proven assets in the Eagle Ford Shale of South Texas

Alberta Investment Management Corporation in its $500 million preferred equity investment in Howard Midstream Energy Partners, LLC

Pine Brook Road Partners in its line of equity commitment to Accelerate Resources Holdings, a Dallas-based exploration and production company focused on U.S. oil and gas basins

Warburg Pincus in a follow-on investment round in Monolith Materials, a chemicals company backed by First Green Partners (a Warburg Pincus-backed fund) and KERN Partners

Warburg Pincus in its lead role in a $1.13 billion line of equity commitment to Venari Resources, an oil and gas company focused on deepwater exploration in the Gulf of Mexico, and in Venari’s subsequent raising of an additional $1.3 billion of equity commitments

Warburg Pincus in its $500 million line of equity commitment to Navitas Midstream Partners, a producer-focused midstream company*

Zenith Energy, an international liquids and bulk terminaling company and Warburg Pincus portfolio company, in its acquisition of the Bantry Bay Oil Terminal in West Cork, Ireland, from Phillips 66*

SCF Partners in the combination of three portfolio companies to form Nine Energy Service, a provider of completion tools and services to support the development of unconventional and conventional oil and gas resources*

MarkWest Energy Partners in its approximate $2 billion acquisition of The Energy & Minerals Group’s stake in a Marcellus Shale joint venture*

Warburg Pincus in its lead role in a $600 million line of equity commitment to Delonex Energy Limited, an East Africa-focused exploration and production company*

Global Infrastructure Partners in its $2.8 billion joint venture with El Paso Corporation to construct, own, and operate the Ruby Pipeline, a 675-mile natural gas pipeline from Wyoming to Oregon*

Quintana Capital Group in connection with its evaluation of the Las Brisas Energy Center coal-fired power plant development project.*

Global private equity fund in its bid for Ameren Corporation’s non-state regulated electrical generation business*

SCF Partners and several of its portfolio companies, including Forum Energy Technologies, Nine Energy Service, and Reservoir Group, in more than 35 domestic and international acquisitions of energy services companies*

MarkWest Energy Partners in its $950 million joint venture with The Energy & Minerals Group for the construction and operation of midstream infrastructure in the Utica Shale, and subsequent increase of EMG’s funding commitment to the joint venture*

Edge Oilfield Services and Summit Oilfield Services in their $300 million sale to Key Energy Services*

Pine Brook Road Partners in its sale of Global Oilfield Services, an artificial lift company, to Halliburton*

Concho Resources in its $1.65 billion acquisition of the oil and gas assets of Marbob Energy Corporation and affiliated entities*

* Matters prior to joining Kirkland