In Q1 2009 Salym Petroleum Development  B.V. (SPD) jointly with Schlumberger Logelco Inc. carried out an assessment of oil and gas content presence in Bazhenov formation deposits (JS-0 formation). This is a unique geological horizon with unconventional indications of hydrocarbons and reservoirs.

 

Hydrocarbon reservoirs of Bazhenov formation in most of the cases are represented by shales, enriched with organic content, siliceous deposits and cavernous fractured carbonate rock. One of the most important tasks of Bazhenov exploration is to locate the prospective oil zones using different techniques and strategy. As a part of this effort three wells were to be drilled in prospective oil zones, with one of them being characterized by excessive temperature of more than 135 °C and anticipated formation pressure of up to 600 atm.