“This new well is an ongoing part of our plan to fully exploit the remaining oil reserves in the Lelyaki field through optimal placement of infill production wells. We will increase the production volumes and cash flows in 2010 and this is very positive for the company,” said Zenon Potoczny Petrosibir’s President.

The Lelyaki oil field was previously one of the largest producing fields in the Soviet Union, with a cumulative production of 385 million barrels of oil. The total daily production in 2009 was over 600 barrels per day. The new production well #304A is the third new well to be drilled since the company acquired a forty-five percent stake in Lelyaki. The well has a projected total depth of 2,015 meters and will be drilled to further develop the P1, P2 and K-1 productive reservoirs. Net drilling cost is expected to be SEK 3 million (CAD 450,000).

In addition, Petrosibir anticipates re-entering and sidetrack drilling of three suspended wells in different parts of the field during 2010. These well interventions show very good economics as the capital cost is much lower than new drilling.

“Our strategic partnerships with leading Ukrainian oil and gas companies like Ukrnafta are a key reason for our success in Ukraine. Ukraine is important to world energy markets. It is one of Europe’s largest energy consumers, and wants to increase production from its own basins,” said Robert Karlsson, Petrosibir’s CEO.

The country’s proven reserves include 400 million barrels of oil and 1.1 trillion cubic meters of gas (seven billion barrels of oil equivalents).

For more information, please contact:

Robert Karlsson, CEO Petrosibir, tel +46 709 565 141

robert.karlsson@petrosibir.com

Zenon Potoczny, President Petrosibir, tel +1 416 251 8517

zenon@sheltoncdn.com

www.petrosibir.com

About Petrosibir AB

Petrosibir AB (currently under change of name to Shelton Petroleum AB) is a Swedish company focused on exploring and developing concessions in the Volga-Urals area in Russia and the resource-rich basins of Ukraine. Petrosibir has built effective personal relationships, strategic regional partnerships and a portfolio of projects on and offshore. The company holds three licenses in the Russian republic of Bashkiria, located southwest of the Ural Mountains. The license blocks, which border one another, have an area of over 500 square kilometers and are surrounded by other producing oil fields. Petrosibir has found oil in its first two wells and measured commercial flow rates. In Ukraine, a strategic partnership with Ukrnafta, Ukraine's largest oil and gas company, provides Petrosibir's subsidiary Shelton Canada with a stake in the oil producing Lelyaki field next to Poltava. Petrosibir's subsidiary Shelton Canada also has a Joint Investment Agreement with Chornomornaftogaz, the leading Ukrainian oil and gas company in offshore development, that gives it a fifty per-cent stake in three major license areas in the Azov and Black Sea regions. The Petrosibir share is traded on the NGM stock exchange under the symbol PETS.