Kelli C. Sims

Kelli C. Sims

  • 713.217.2803
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  • Thompson & Knight LLP
    811 Main Street
    Suite 2500
    Houston, TX 77002-6129 USA
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Kelli Sims focuses her practice on oil and gas matters, including asset and equity purchases and dispositions; development and participation transactions, title due diligence; and negotiation and preparation of oil and gas leases, joint operating agreements, and other instruments pertaining to upstream oil and gas operations.


  • Represented a privately owned, independent exploration and production company in the divestiture of its business for $2.4 billion
  • Represented Reliance Holding USA, Inc. in the divestiture of its Eagle Ford Shale midstream business for $2.15 billion
  • Represented Casillas Petroleum Resource Partners LLC in the purchase of oil and gas assets for $106 million
  • Represented an independent energy company in the acquisition of Marcellus assets for approximately $350 million
  • Represented a Houston-based energy company in the acquisition of oil and gas assets in the Anadarko Basin for $1.95 billion
  • Represented an oil and gas production company in the sale of its producing oil and gas assets in Texas and New Mexico in two separate transactions

Activities (Memberships/Affiliations)

  • Member, State Bar of Texas
  • Member, Houston Bar Association; Oil, Gas, and Mineral Law Section
  • Member, American Bar Association
  • Member, Houston Young Lawyers Association
  • Member, Women's Energy Network
  • Board Member, JJ's I'm Me Foundation
  • Member, National Center for Missing and Exploited Children - Houston Chapter