Sonterra Resources Inc. is the operator of record and a co-owner of 5,500 gross acres in Texas …  that, effective June 23, 2008, it entered into a contract operating agreement with STO Operating Company, the operating subsidiary of …

Sonterra Resources, Inc and South Texas Oil Company, Sonterra Resources, with South Texas acting as …  (TVD) in the ST 127 Unit Well No. l under the new contract operating agreement. This well is the initial well in the Sydney/150 Deep …

Sonterra Resources, Inc. (OTC Bulletin Board: SOTR) announced today that Donald Vandenberg has been …  Wayne Psencik, Sonterra’s current Vice President and Chief Operating Officer, and Sherry Spurlock, Sonterra’s Chief Financial Officer, …