In Occidental Permian, Ltd. et al v. Citation 2002 Investment LLC  the Supreme Court construed a 1987 assignment from Shell Western E& P Inc. to Citation of a large number of properties. The instrument contained these numerous provisions:

  • 1st granting clause: … all right, title and interest in the … leasehold estates described in

Can the Texas lessee perpetuate his oil and gas lease by “constructive participation” in wells drilled by another? Under the facts in Cromwell v. Anadarko E&P Onshore, LLC, the answer is no.

Cromwell and Anadarko’s wells

In 2009 Cromwell obtained the Ferrer and Tantalo leases covering small fractional interests in several sections. Anadarko owned working