Chief Operating Officer Appointed

February 01, 2010

ST. PETER PORT, GUERNSEY, Feb 01, 2010 (MARKETWIRE via COMTEX) — Tethys Petroleum Limited (“Tethys” or the “Company”) (TSX: TPL) today announced the appointment of Graham Wall as Chief Operating Officer (“COO”) of the Tethys Petroleum Group of Companies effective today.

Mr Wall, who has been promoted from his previous position as Vice President Technical, will head up a strengthened operations team which will be responsible for all operational activities including production, reservoir engineering and development, field planning, drilling and production operations, production geology and well testing.

Dr David Robson, Chairman, President and CEO of Tethys Petroleum said: “We expect that 2010 will be an exciting and very busy year for Tethys Petroleum, and we anticipate a step up in operational activity in exploration, appraisal and development in all of our areas. Further strengthening of our operations team will help us meet our operational and production targets and add real value to the Company. As well as his comprehensive expertise Graham has shown real dedication and commitment to the Company and I wish him every success in his new position.”

Mr Wall holds a B.Sc.(Hons) degree in exploration and mining geology from the University of Wales, UK. He is a Fellow of the Geological Society (FGS), a member of the Society of Petroleum Engineers (SPE), a member of the American Association of Petroleum Geologists (AAPG) and a member of the Petroleum Exploration Society of Great Britain (PESGB).

Tethys is focused on oil and gas exploration and production activities in Central Asia with activities currently in the Republics of Kazakhstan, Tajikistan and Uzbekistan. This highly prolific oil and gas area is rapidly developing and Tethys believes that significant potential exists in both exploration and in discovered deposits.

This press release contains “forward-looking information” which may include, but is not limited to, statements with respect to our operations. Such forward-looking statements reflect our current views with respect to future events and are subject to certain risks, uncertainties and assumptions, including the risks relating to regulatory approvals and of sufficiency of the proceeds for the purposes contemplated. See the description of risks and uncertainties and underlying factors and assumptions relevant to the offering and “forward looking information” contained herein and to the Company’s business, including its exploration and development activities, contained in the Annual Information Form dated March 31, 2009 (which are incorporated herein by reference). The “forward looking statements” contained herein speak only as of the date of this press release and, unless required by applicable law, the Company undertakes no obligation to publicly update or revise such information, whether as a result of new information, future events or otherwise.

Tethys Petroleum Limited
Sabin Rossi
Vice President Investor Relations
+1 416 572 2065
+1 416 572 2201 (FAX)

In Kazakhstan
PG Communications
Ardak Akanov, Managing Director
+7 (727) 272 8867, +7 (727) 272 8237
+7 (727) 272 7745

In Asia-Pacific
Quam IR
Anita Wan
Associate Director
+ (852) 2217-2999

SOURCE: Tethys Petroleum Limited