Whipstock setting method and apparatus

Details Whipstock setting method and apparatus Whipstock setting method and apparatus

1981-05-29

1983-08-09

Purser, Ernest R.

Wells

Processes

Perforating, weakening, bending or separating pipe at an...

1661176, 175 61, E21B 708

Patent

active

043973558

ABSTRACT:
A whipstock setting apparatus including a whipstock with an anchor-packer connected on its lower end and a cutter releasably connected to the upper end of the whipstock with a fluid line connecting from the bore of the cutter to the anchor-packer for setting of the anchor-packer whereby the whipstock can be set in the cased well bore at a level above the bottom without having to make a round trip with the well string on which it is lowered into the cased well bore. The method of setting a whipstock includes the steps of lowering the apparatus into the cased well bore on a well string, orienting the whipstock, checking the orientation of the whipstock with a wire line survey instrument run through the well string, pressuring the well string to set the anchor-packer and lowering and rotating the well string to commence milling after the anchor-packer has been set.

REFERENCES:
patent: 2020471 (1935-11-01), Layne
patent: 2509144 (1950-05-01), Grable et al.
patent: 3115935 (1963-12-01), Hooton
patent: 3397746 (1968-08-01), Link
patent: 3908759 (1975-09-01), Cagle et al.
patent: 4153109 (1979-05-01), Szescila
patent: 4285399 (1981-08-01), Holland et al.
patent: 4304299 (1981-12-01), Holland et al.
The Oil and Gas Journal, May 8, 1930/p. 108, "Whipstock is Operated by Hydraulic Pressure."

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