OPERATORS · TEXAS · P-5 NUMBER 802302

Sonterra Operating, Inc.

4 PERMITS · PAGE 1 OF 1 · BY ISSUE DATE

IssuedPermitTypeCountyLease / wellDepthStatusAPIOperator change
Jun 24, 2008663768DrillCalhounState Tract 127 No. 1 Unit #112,827Final completion05731770Now South Bay Resources L.L.C.
Feb 22, 2005557687DrillCalhounState Tract 150 #212,000Final completion05731692Acquired from Boss Expl & Prod Corporation
Sep 7, 1999487125DrillCalhounAquamarine Unit #111,525Unperforated completion05731600Acquired from Cockrell Oil Corporation
Jun 25, 1990374716DrillStarrSilva #113,000Final completion42732423Acquired from Tesoro Expl. & Prod. Company