| 摘要 |
A whipstock assembly includes a whipstock body 8 and a neutralizer 11 releasably securable to the whipstock beady. A neutralizer has a center of gravity radially opposite the whipstock center of gravity. A combined whipstock/neutralizer center of gravity is substantially closer to the central axis of a whipstock body than the whipstock center of gravity. A detaching mechanism including a pin shears to release the neutralizer from the whipstock body, such as the neutralizer may be returned to the surface after the whipstock body has been set in the well.
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