August 6-7, 2011: our specialists have assembled and set up the BS-146 whipstock in well no. 17 414, Romashkino oil field, development history which dates back to 1943. More than 15 billion barrels of oil was produced from this oil field. Today the Romashkino oil field is on late stage of its development. Depletion of stocks is more than 85%. One effective way of increasing producing ability of well is drilling of lateral bores. This makes possible to involve in the development of hard-to-extract oil reserves.

Thus, the whipstock was set at 2526 ft. depth and oriented with application of IMMN - 36 inclinometer.

As the result of big conducted job a 4-7/8” bit was run to the bottom without any complications purposely for continuation the deepening of lateral borehole.