Tull Florey

Tull Florey is a member of the firm’s Mergers & Acquisitions, Oil & Gas, and Energy & Infrastructure practice groups. He is a premier lawyer in mergers and acquisitions, including public company mergers, entity and asset acquisitions and dispositions, joint ventures, tender offers, and material dispositions. He has particular experience with clients engaged in oilfield service, oil and gas exploration and production, oilfield equipment manufacturing and midstream activities. He also assists clients on an ongoing basis with securities and corporate governance matters.

Tull has been widely recognized, including Chambers Global, Chambers USA, The Legal 500 U.S., The Best Lawyers in America, Lawdragon 500 Leading Dealmakers in America and Texas Super Lawyer. Tull’s peers recently selected him as 2025 Lawyer of The Year for Houston Corporate Law.

Representative Matters*

Mergers and Acquisitions

• Coterra Energy – proposed $58 billion merger with Devon Energy and $3.95 billion acquisition of assets of Franklin Mountain Energy and Avant Natural Resources
• Pioneer Natural Resources – $65 billion merger with Exxon Mobil Corporation and $8 billion acquisition of Parsley Energy
• Aris Water Solutions – $2 billion acquisition by Western Midstream Partners
• SilverBow Resources – $2 billion acquisition by Crescent Energy Company
• Expro Group – $3 billion combination transaction with Frank’s International
• Valaris Limited – $12 billion combination transaction of Ensco and Rowan Companies, investment by affiliates of John Fredriksen and sale of drilling rigs Valaris 113 and Valaris 114
• Patterson-UTI Energy – $5.4 billion combination transaction with NexTier Oilfield Solutions, acquisition of Ulterra Drilling Technologies, acquisition of Pioneer Energy Services Corp., sale of well servicing rig business and wireline business and acquisition of Multi-Shot
• Atwood Oceanics – $2 billion acquisition by Ensco
• Technip Energies – $556 million acquisition of Ecovyst’s Advanced Materials & Catalysts business
• Diversified Energy – redomicile transaction from the U.K. to Delaware and $1.3 billion acquisition of Maverick Natural Resources
• KBR – $737 million acquisition of LinQuest Corporation
• Western Midstream Partners – $885 million acquisition of Meritage Midstream Services
• Forum Energy Technologies – acquisitions of Variperm Holdings, Houston Global Heat Transfer, Syntech Technology, Wireline Solutions, Dynacon, and Merrimac Manufacturing and formation of joint venture with Quantum Energy Partners to acquire Global Tubing
• Ovintiv – $2.7 billion acquisition of NuVista Energy Ltd., $2.4 billion acquisition of certain Montney assets from Paramount Resources Ltd. and $4.3 billion acquisition of all leasehold interest and related assets of Black Swan Oil & Gas, PetroLegacy Energy and Piedra Resources
• Civeo Corporation – acquisition of Noralta Lodge, acquisition of 400 room accommodations facility from Lakeland and redomicile transaction from Delaware to British Columbia, Canada
• John Wood Group – formation of joint venture with Siemens AG, $2.8 billion sale of Well Support Division to General Electric Company and acquisitions of the Infinity Group, Mitchell’s Oil Field Services and Duval
• Pride International – $8.6 billion acquisition by Ensco, $1 billion divestiture of its Latin America land operations, $95 million divestiture of its Eastern Hemisphere land operations and $2 billion merger with Marine Drilling Companies
• Marathon Oil Corporation – $15 billion spin-off of Marathon Petroleum Corporation, $3.7 billion acquisition of the remaining interest in Marathon Ashland Petroleum owned by Ashland and $300 million acquisition of Khanty Mansiysk Oil Corporation
• East Resources (privately held Marcellus shale company) – $4.7 billion acquisition by Shell Oil Company
• Contango Oil & Gas Company – acquisition of Mid-Con Energy Partners and acquisition of assets of Will Energy Corporation
• American Midstream Partners – proposed acquisition of Southcross Energy Partners and substantially all of the assets of Southcross Holdings, sale of propane marketing and services business to SHV Energy and acquisition of the assets of Panther Asset Management
• Arkoma Drilling and Williston Drilling – sale of Bakken shale oil and gas assets to Comstock Resources
• ESCO Corporation – sale of Ulterra Drilling Technologies and acquisitions of Stabiltec Downhole Tools and Ulterra Drilling Technologies
• Concho Resources – $9.5 billion acquisition of RSP Permian
• Penn Virginia Corporation – proposed $1.7 billion acquisition by Denbury Resources
• Schlumberger Limited – $14.8 billion acquisition of Cameron International Corporation and $11 billion acquisition of Smith International
• Conflicts Committee of Holly Energy Partners – take private by HF Sinclair Corporation
• Conflicts Committee of Green Plains Partners – take private by Green Plains
• Conflicts Committee of Shell Midstream Partners – take private by Shell plc
• Conflicts Committee of BP Midstream Partners – take private by BP plc
• Conflicts Committee of Rattler Midstream – take private by Diamondback Energy
• Conflicts Committee of Landmark Infrastructure Partners – take private by DigitalBridge
• Conflicts Committee of Williams Partners – $11.4 billion financial repositioning transaction with The Williams Companies, proposed $13.8 billion acquisition by The Williams Companies and $50 billion merger of Williams Partners with Access Midstream Partners
• Conflicts Committee of Kinder Morgan Energy Partners (KMP) and Special Committee of Kinder Morgan Management (KMR) – $70 billion purchase of KMP, KMR and El Paso Pipeline Partners by Kinder Morgan and $6.2 billion dropdown from Kinder Morgan of 100% of Tennessee Gas Pipeline Company, L.L.C. and a 50% interest in El Paso Natural Gas Company

Securities Offerings

• Valaris Limited – offerings of senior notes, exchangeable notes and common shares and tender and exchange offers and consent solicitations for senior notes
• Expro Group – public offering of common shares
• Civeo Corporation – public offering of common shares
• Patterson-UTI Energy – public and private offerings of senior notes
• Forum Energy Technologies – public and private offerings of senior notes and common stock
• Publicly traded E&P company – tender offers for senior notes, second lien notes exchange offer and offerings of senior notes and convertible notes
• Atwood Oceanics – public offerings of senior notes and common stock and tender offer for senior notes
• Cabot Oil & Gas Corporation – public offering of common stock
• ConocoPhillips – numerous public and private offerings of debt securities of ConocoPhillips and its subsidiaries
• Conoco – numerous public and private offerings of debt securities of Conoco and its finance subsidiary and initial public offering of common stock
• Pride International – numerous public and private offerings of debt and equity securities
• Hercules Offshore – initial public offering of common stock and subsequent offerings of common stock and convertible debt
• PostRock Energy Corporation – multiple private placements of common stock, preferred stock and warrants to White Deer Energy

Tull earned his Juris Doctor in 1995 from the University of Virginia School of Law where he was the Executive Editor of the Virginia Law Review. He graduated in 1992 with High Honors from The University of Texas at Austin, where he was elected to Phi Beta Kappa and received a Bachelor of Arts degree in Plan II Interdisciplinary Honors.

* Includes matters handled prior to joining Gibson Dunn

Capabilities

• Mergers and Acquisitions
• Capital Markets
• Energy and Infrastructure
• Oil and Gas
• Power and Renewables
• Private Equity
• Securities Regulation and Corporate Governance

Credentials

Education:

• University of Virginia - 1995 Juris Doctor
• University of Texas - 1992 Bachelor of Arts

Admissions:

• Texas Bar