whipstock


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whipstock

[′wip‚stäk]
(petroleum engineering)
A long wedge dropped or placed in a petroleum well in order to deflect the drill from some obstruction.
References in periodicals archive ?
However in 2008 the division moved from basic trading activity to introduce whipstock and fishing services.
(whipstock) that deflected the drill toward the desired target, but
Wells that require a cased-hole whipstock kickoff or a cement plug kickoff are assigned a weight of two points.
Also, four Whipstock hole-survey programs saved about A$30,000 per hole.
(Houston) begin the curved, or build, section of horizontal medium-range wells by inserting a whipstock into an old vertical well-bore.
After landing at the required depth, the team set the Inflatable Production Packer (IPP) to anchor the whipstock and drilled off the formation in a single trip, saving the operator 29 hours of rig time and more than $100,000 of operational expense.
Complications with kicking off from the cement plug which was installed at the kick-off point of the vertical leg have prompted the operator to set in place a more permanent device (a whipstock) to guide the directional motor into the formation and begin the horizontal leg.