FIELD: oil and gas industry.
SUBSTANCE: invention is related to milling of sidetracks of drilling wells. The device contains a downhole whipstock, a guide rod connected to the downhole whipstock, and a flushing pipe connected to the guide rod. The guide rod is connected to the wash pipe by an actuated connection comprising a hydraulic system, a pneumatic system, or a combination thereof.
EFFECT: wellbore milling operation is improved by eliminating the interaction of the cutting tool with the whipstock, and the retention of milling debris is ensured.
11 cl, 6 dwg
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