Texas Supreme Court Finds Express Anti-Drainage Covenant Ambiguous on Non-Adjoining Tract Offset Well Obligations
The Texas Supreme Court reversed summary judgment in favor of Rosetta Resources, holding that an express covenant to protect against drainage in a lease addendum was ambiguous as to whether the lessee's offset well drilling obligation applied only to drainage from specifically enumerated triggering wells or extended to all drainage affecting undrilled acreage. The Court remanded for trial on whether Rosetta breached its drainage protection duty when the Simmons Well—located on non-adjoining property—drained the Martin Lease, requiring interpretation of an express anti-drainage covenant that potentially extends beyond traditional common law limitations.
Background
Rosetta Resources Operating, LP leased mineral interests from Kevin Martin, Jamie Martin, and Ashley Lusk under an oil and gas lease covering the Martin Lease. The parties negotiated an addendum containing an express covenant to protect against drainage—a provision that departed from the common law implied covenant framework. The Martin Lease addendum attempted to create an express obligation with specific triggering mechanisms tied to identified wells.
The Dispute
The central issue turned on the interpretation of the addendum's drainage protection language. The lessors alleged that Rosetta breached its express covenant by failing to drill offset wells to protect against drainage from the Simmons Well, which was not located on property adjoining the Martin Lease. Rosetta moved for summary judgment, arguing that the express covenant's language limited its offset well drilling obligation exclusively to drainage from specifically enumerated triggering wells identified in the addendum. The lessors contended the covenant imposed a broader duty to protect against all drainage affecting undrilled acreage on the Martin Lease, regardless of whether the draining well was specifically listed or located on adjoining property.
The lower courts granted summary judgment in favor of Rosetta.
The Supreme Court's Analysis
The Texas Supreme Court reversed, holding that the addendum's drainage protection language was ambiguous. The Court found that the provision could reasonably be interpreted either as limiting the offset well obligation to specifically enumerated triggering wells or as establishing a general duty to protect against all drainage affecting the leased premises. Because the contract language was susceptible to more than one reasonable interpretation, the Court concluded that summary judgment was inappropriate and remanded for trial.
The Court's decision addresses whether an express anti-drainage covenant can extend beyond traditional limitations. While the implied covenant to protect against drainage typically applies only when offset wells on adjoining property drain the leased premises, the parties here attempted to craft an express covenant with potentially broader application. The Court remanded for trial to determine whether the parties intended the express covenant to require Rosetta to drill offset wells in response to drainage from the Simmons Well, despite its location on non-adjoining property.
Implications for Practice
This decision underscores the importance of precise drafting in oil and gas lease addenda, particularly when parties seek to modify or expand upon common law implied covenants. The ambiguity in the Martin Lease addendum resulted in protracted litigation that could have been avoided with clearer contractual language defining the scope of the drainage protection obligation. Practitioners negotiating express anti-drainage covenants should explicitly address whether the covenant applies only to enumerated wells, only to adjoining tracts, or to all drainage regardless of source or location.