Boring or penetrating the earth – Processes – Boring curved or redirected bores
Patent
1992-11-19
1994-08-09
Dang, Hoang C.
Boring or penetrating the earth
Processes
Boring curved or redirected bores
1661176, 175 80, 175 81, 175 82, E21B 708
Patent
active
053357370
ABSTRACT:
A retrievable whipstock which can be hydraulically set within a wellbore and following the drilling procedure mechanically released and retrieved for future use. The whipstock includes a whip which directs a milling tool from the main well and a hydraulically actuated packer or anchor for setting the whipstock in the wellbore. The whip includes ratchet teeth on its side edges for mating engagement with a retrieval tool. The retrieval tool includes a nose piece to ensure proper orientation relative to the whipstock and a clamping ring with ratchet teeth to engage the teeth of the whip. The whipstock is released through the application of tension through the retrieval tool allowing removal from the wellbore.
REFERENCES:
patent: 1835227 (1931-12-01), Lane et al.
patent: 2132061 (1938-10-01), Walker
patent: 2207920 (1940-07-01), Hughes
patent: 2227347 (1940-12-01), Johnson
patent: 2386514 (1945-10-01), Stokes
patent: 2509144 (1950-05-01), Grable et al.
patent: 2633331 (1953-03-01), Hampton
patent: 2716540 (1955-08-01), McCune et al.
patent: 3095039 (1963-06-01), Kinzbach
patent: 4397355 (1982-08-01), McLamore
patent: 4429741 (1984-02-01), Hyland
patent: 4765404 (1988-08-01), Bailey et al.
patent: 5109924 (1992-05-01), Jurgens et al.
patent: 5154231 (1992-10-01), Bailey et al.
patent: 5163522 (1992-11-01), Eaton et al.
Dang Hoang C.
Smith International Inc.
Upton Robert G.
LandOfFree
Retrievable whipstock does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Retrievable whipstock, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Retrievable whipstock will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-210344