49 P.3d 432 PLAINS PETROLEUM COMPANY and PLAINS PETROLEUM OPERATING COMPANY, Plaintiffs, v. FIRST NATIONAL BANK of LAMAR, et al., Defendants. AMOCO PRODUCTION COMPANY, Plaintiff/Appellant/ Cross-appellee, v. VINCENT YOUNGREN, JR., et al., Defendants/Appellees/Cross-appellants. OXY USA INC., Plaintiff/Appellant/Cross-appellees, v. OPAL LITTELL, et al., Defendants/Appellees/Cross-appellants. GILBERT H. COULTER, et al., Counterclaim Defendant/Appellee, v. ANADARKO PETROLEUM CORPORATION, Counterclaim […]