Method and apparatus of installing a whipstock

Details Method and apparatus of installing a whipstock Method and apparatus of installing a whipstock

1995-05-31

1997-01-14

Tsay, Frank

Wells

Processes

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

1661176, E21B 2900

Patent

active

055929915

ABSTRACT:
A one-trip system for milling a window using a whipstock is disclosed. The whipstock can be set on a packer or anchor which can be an electric line-type packer which, without modifications, can be set with the hydraulic mechanism disclosed so as to avoid the need for running a wireline rig. The assembly of the packer or anchor and whipstock is run into the wellbore in a single trip, with a mill or mills capable of milling a window. At the conclusion of the milling, the mill or mills are retrieved. Thereafter, a retrieving tool is attached to the whipstock and facilitates a release of the setting tool from the packer so that the setting tool and the whipstock are retrieved together. This leaves a seal bore within the packer which can be employed with a subsequent tubing string run through the packer so that production can be obtained through the packer as well as through the deviated wellbore while potential leakpaths in the packer from the annulus to the tubing are eliminated by the withdrawal of the setting assembly.

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patent: 5443129 (1995-08-01), Bailey et al.
Baker Oil Tools, Permanent Packer Systems, Model "D" and "DB" Retainer Production Packer, date unknown.
Baker Oil Tools, Permanent Packer Systems, Electric Wireline Packer Setting, Model "E-4" Wireline Pressure Setting Assembly, Model "L" Hi-Temp Wireline Pressure Setting Assembly, date unknown.
Baker Oil Tools, Permanent Packer Systems, Model "BH" Setting Tool Model "BHH" Setting Tool, date unknown.
Baker Oil Tools, Permanent Packer Systems, Model "DW-1" Whipstock Packer, Model "W-2" Whipstock Anchor Assembly, date unknown.
A-Z/Grant International, Casing Sidetrack Systems, date unknown.

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