FIELD: oil industry, particularly for well operation.
SUBSTANCE: downhole equipment comprises casing pipe, cement bridge and liner screwed on casing pipe through sub with left-handed thread. Downhole equipment also has annular hydraulic packer adapted to provide stepped cementing and installed on the liner, grouting layer arranged under the packer and anticorrosion liquid located in casing annulus above annular hydraulic packer.
EFFECT: increased diameter of new inclined well bore and, as a result, increased oil recovery, possibility to remove casing pipe out of well and drilling new inclined bore from point located above annular hydraulic packer, wherein inclined bore diameter is equal to initial well diameter.
1 ex, 3 dwg
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