Permanent whipstock and placement method

Details Permanent whipstock and placement method Permanent whipstock and placement method

1991-08-30

1993-03-23

Neuder, William P.

Wells

Processes

Assembling well part

1661175, E21B 33128

Patent

active

051955911

ABSTRACT:
Coring and other operations may be carried out through a cased wellbore by placing a permanent whipstock having a tool guide surface thereon in the wellbore through the production tubing string and anchoring the whipstock with cement after positioning the whipstock in a predetermined orientation of the guide surface. An underreamer faces off the cement and cuts a pilot bore for guiding a casing cutting tool so that the whipstock guide surface is properly engaged during the casing wall milling and core drilling operations. The whipstock is inserted into the wellbore through a production tubing includes a hydraulic actuator for moving the whipstock laterally after exiting the lower end of the tubing string to assist in supporting the whipstock in the wellbore and to properly orient the guide surface. The actuator is supplied with pressure fluid through a coilable tubing string connected to the whipstock during the insertion and placement process.

REFERENCES:
patent: 1804819 (1931-05-01), Spencer et al.
patent: 1812880 (1931-07-01), Kinzbach et al.
patent: 2324682 (1943-07-01), De Long
patent: 2401893 (1946-06-01), Williams, Jr.
patent: 2445100 (1948-07-01), Wright
patent: 2699920 (1955-01-01), Zublin
patent: 3115935 (1963-12-01), Hooton
patent: 3339636 (1967-09-01), Frisby
patent: 4007797 (1977-02-01), Jeter
patent: 4153109 (1979-05-01), Szescila
patent: 4285399 (1981-08-01), Holland et al.
patent: 4397355 (1983-08-01), McLamore
patent: 4765404 (1988-08-01), Bailey et al.

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