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District Court Denies Dismissal of OCSLA Decommissioning Dispute Over Hurricane-Damaged Gulf Platform

Arena Energy, LLC v. Maritech Resources, LLC U.S. District Court, Southern District of Texas, Houston Division 4:25-CV-00641 active
By Joel Reese · July 20, 2026 U.S. District Court, Southern District of Texas, Houston Division

Arena Energy sued Maritech Resources and TETRA Technologies for breach of contract after defendants allegedly failed to perform decommissioning obligations on a Hurricane Ike-damaged platform at EC Block 328 in the Gulf of Mexico, despite a 2002 Purchase and Sales Agreement requiring Maritech to assume all plugging and abandonment liabilities. The Southern District of Texas denied both defendants' motions to dismiss, though the court's full reasoning was not available in the published excerpt.

M&A Litigation OCSLA Indemnity Provisions Gulf of Mexico Decommissioning Liability

Background and Parties

Arena Energy, LLC and Arena Offshore, LP (collectively "Arena"), both Delaware entities, brought suit under the Outer Continental Shelf Lands Act (OCSLA), 43 U.S.C. § 1349(b)(1), against Maritech Resources, LLC and TETRA Technologies, Inc., also Delaware entities, concerning decommissioning obligations for an offshore platform at EC Block 328 in the Gulf of Mexico. The platform was toppled by Hurricane Ike in 2008, and the Bureau of Safety and Environmental Enforcement (BSEE) subsequently demanded decommissioning. Arena asserts it holds only subsurface lease operating rights and has no ownership interest in the platform itself, yet BSEE turned to Arena to perform the decommissioning operation. Arena contends that its subsurface holdings—specifically, lease operating rights—do not obligate it to maintain, repair, or dispose of the downed platform.

The Contractual Framework

The dispute centers on a 2002 Purchase and Sales Agreement under which Maritech purchased assets from Dominion Exploration & Production, Inc., Dominion Oklahoma Texas Exploration & Production, Inc., and CNG Pipeline Company. The purchased assets included operating rights in EC Block 328. The agreement's paragraph 703(a) contains sweeping decommissioning language requiring the buyer to:

EXPRESSLY COVENANTS AND AGREES TO ASSUME AND FULLY COMPLY WITH (1) ALL LIABILITIES AND OBLIGATIONS WITH RESPECT TO PLUGGING AND ABANDONMENT, INCLUDING, WITHOUT LIMITATION, ALL PLUGGING, REPLUGGING, ABANDONMENT, REMOVAL, DISPOSAL OR RESTORATION ASSOCIATED WITH THE ASSETS (WHETHER DRILLED OR PLACED ON AN ASST PRIOR TO OR AFTER THE EFFECTIVE DATE), THE REMOVAL AND CAPPING OF ALL ASSOCIATED FLOWLINES, THE RESTORATION OF THE SURFACE, SITE CLEARANCE ... AND ANY DISPOSAL OF RELATED WASTE MATERIALS ..., ALL IN ACCORDANCE WITH APPLICABLE FEDERAL, STATE AND LOCAL LAWS AND THE TERMS AND CONDITIONS OF THE LEASES AND ASSOCIATED CONTRACTS ...

Arena contends that this provision, along with other provisions contained in subsequent agreements, obligated both Maritech and its parent company TETRA to bear all plugging, abandoning, and decommissioning costs and responsibilities for wells, platforms, and facilities on EC Block 328. According to Arena, the relevant documents reflect the authorized signatures of both entities, and these obligations remained in effect even after Maritech sold operating interests to other entities.

Procedural Posture

Both Maritech and TETRA filed separate motions to dismiss Arena's lawsuit on "separate, but related bases." Arena responded to both motions, and after reviewing the documents and arguments, the court denied both Maritech's motion and TETRA's motion to dismiss. The published excerpt of the opinion concludes at the end of the factual background section, and the court's specific legal analysis and reasoning for denying the motions were not included in the available text.