William “Bill” B. Hayenga, II

Bill practices Texas oil and gas law. The majority Bill’s practice consists of representing producers, working interests, and mineral interest owners before the Railroad Commission of Texas, General Land Office, and other government agencies, as well as related litigation before Texas Courts. Bill also counsels and represents clients in business matters.

Bill is married to an attorney, Dr. Kara Hayenga, Phd. Bill is a proud father of two wonderful daughters. Bill’s hobbies include spending time with his family, the outdoors, watching college sports, his dogs, and landscaping.



State Bar of Texas Oil, Gas & Energy Resources Law Section; Austin Bar Association: Oil, Gas, & Mineral Law Section (Treasurer 2020), Austin Young Lawyers Association; Member Texas Bar McElroy, Sullivan, Miller & Weber, L.L.P. Law Clerk (2011 & 2012); Texas General Land Office Legal Intern (2011); State Attorney’s Office, Legal Extern, Eighth Judicial Circuit (2012); Fortune 500 Company Professional Management Experience (Prior to Law School); Above the Law “Law Student of the Day” (2012).



Recent Injection/Disposal Dockets

Recent Field Rules

EOR Tax Credits



Rule 76- Qualified Subdivision

  • https://portalvhdskzlfb8q9lqr9.blob.core.windows.net/media/29022/03-89581-mfe-pfd.pdf

Defending Allocation Well Complaints Against Producers

Net GOR and Forgiveness of Overproduction

Statewide Rule 40 Assignment of Acreage:

Notable Representation Topic Experience

  • Enhanced Oil Recovery Projects (CO2, Waterflood, and Biologic Projects)
  • Carbon Capture and Sequestration (Texas Permitting)
  • Unitization
  • GLO Pooling, Production Sharing Agreements, and Development Agreements as wells as Lease/Unit Obligations
  • Pooling
  • University Lands Development Agreements
  • Tax credits for EOR Projects
  • Areal variance permit for injection wells
  • Permitting Producer Injection/Disposal Wells.
  • Protesting Injection/Disposal Wells
  • Negotiation of leases/development agreements.
  • Permitting and Protesting Rule 37 Applications (Lease Line Spacing)
  • GLO Vacancy Applications
  • Field Rules for fields across Texas including, but not limited to, Spraberry, Delaware Mountain Group, San Andres, Wolfcamp, Haynesville, Barnett, Cotton Valley, and Frio Formations.
  • New Field Discoveries and Field Consolidations
  • Litigation counsel for issues involving RRC and GLO before Texas Courts.
  • Rule 38 (density exceptions).
  • Representing solid waste disposal companies.
  • Rule 8 pits and related facilities.
  • Lease rights, compliance, and obligations- Retained Acreage/Pooling etc.
  • Overproduction, Allowable, and MER Hearings.
  • Pipeline discrimination and ratemaking
  • Good-Faith Claim to Title RRC Hearings
  • Flaring Permitting
  • Qualified Subdivision (Rule 76)
  • H2S Issues at the RRC (wells and pipelines)
  • Salt Cavern Oil Storage
  • Electric Transmission Line Routing
  • Gas Plant Permitting
  • Groundwater Pooling
  • Rule 40 assignment of Acreage
  • Off-Lease Penetration Points
  • Horizontal Drilling

Notable Presentations

2018- National Association of Division Order Analysts Conference

        Unitization and EOR Projects in Texas

2019- Advanced Administrative Law Conference

        Railroad Commission Update

2020- Houston Association of Division Order Analysts

        RRC, GLO and UL Update



  • Oil and Gas
  • Auburn University (B.S. Business Administration: Supply Chain Management, 2008)
  • University of Florida School of Law (J.D., 2013).
  • State Bar of Texas, 2013