Tethys Petroleum: Kazakh Exploration Well Flows Commercial Oil

Tethys Petroleum Limited ("Tethys" or the "Company" (TSX: TPL) today provided an operational update on its activities in Kazakhstan.

HIGHLIGHTS
--  Exploration well AKD03 well tests commercial oil in secondary target
--  Sandstone unit in Upper Jurassic opens up a new play within the Greater Doris area
--  Doris appraisal wells AKD04 and AKD05 progressing as planned with AKD04 expected to reach total depth by early May 2011 and AKD05 by the end of May 2011. These are the first wells to be drilled based on the new 3D seismic dataset
--  Kul-Bas exploration well KBD01 to reach total depth in June/July 2011

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Americas Petrogas/Apache Corporation Spud First Deep Shale Gas Well on Huacalera Block, Neuquen Basin, Argentina

NOT FOR DISTRIBUTION TO UNITED STATES NEWSWIRE SERVICES OR FOR DISSEMINATION IN THE UNITED STATES

Americas Petrogas Inc. ("Americas Petrogas" or the "Company") (TSX VENTURE:BOE) announces the initiation of drilling of the first deep shale gas well on the Huacalera block in the Neuquen Basin of Argentina. Drilling operations are being conducted by Apache Argentina, the Company's partner and the operator in the the Huacalera block.

Reef Resources Ltd. Announces 72 Metres of Net Pay on the Ausable #5 Well

NOT FOR DISTRIBUTION TO US NEWSWIRE SERVICES FOR DISSEMINATION IN THE UNITED STATES.

Reef Resources Ltd. (TSX VENTURE:REE) ("Reef" or the "Company") reports that petrophysical analysis has been finalized on its Ausable # 5 well. Log analysis indicates 72 metres net pay of oil, natural gas liquids (NGL's) and natural gas in the Guelph and A2 formations in Ontario, Canada.

Log analysis in the Guelph indicates net oil and gas liquids pay zone is 57 metres with porosity averaging 9.7%. Evidence of hydrocarbons was evident on core and logs throughout the Guelph formation.