Wells – Processes – Disassembling well part
Patent
1995-10-17
1997-10-21
Dang, Hoang C.
Wells
Processes
Disassembling well part
1661176, 166381, 175 79, E21B 2300
Patent
active
056786344
ABSTRACT:
A retrieval tool for whipstocks is disclosed. A latch is retractable into the tool upon application of hydraulic pressure. A locking pin securely fastens the whipstock and retrieving tool together. The hydraulic pressure acts a cleaning force on the top of the whipstock and the retrieving slot to facilitate engagement. The offset stabilizer, when oriented opposite the lug on the retrieving tool, creates a force in the direction of the lug, whereby latching the retrieving tool will start. A joint of drillpipe or heavyweight drillpipe is run above the eccentric stabilizer. An offset stabilizer is provided to ensure proper initial orientation and avoid sticking the tool. The latch can firmly grip lugs within a slot in the whipstock. A overshot design is also disclosed using a similar hydraulically actuated latch assembly where the latch grabs the whipstock without having to use an opening therein, if for any reason the opening has been fouled with debris or damaged due to milling. Generally, release from the whipstock cannot occur unless hydraulic pressure is reapplied to release the latch and locking pin, thus allowing them to retract toward the body of the retrieval tool.
REFERENCES:
patent: 2132061 (1938-10-01), Walker
patent: 4153109 (1979-05-01), Szescila
patent: 4765404 (1988-08-01), Bailey et al.
patent: 5109924 (1992-05-01), Jurgens et al.
patent: 5193620 (1993-03-01), Braddick
patent: 5287921 (1994-02-01), Blount et al.
patent: 5335737 (1994-08-01), Baugh
patent: 5341873 (1994-08-01), Carter et al.
patent: 5398754 (1995-03-01), Dinhoble
patent: 5427179 (1995-06-01), Bailey et al.
patent: 5443129 (1995-08-01), Bailey et al.
patent: 5467819 (1995-11-01), Braddick
patent: 5499680 (1996-03-01), Walter et al.
patent: 5535822 (1996-07-01), Schock et al.
Weatherford Fishing and Rental Tool Services Catalog, Weatherford International Incorporated, 1993, 4 pages.
Lebus Rotary Tool Works, Inc., Composite Catalog, Lebus Type GP Joint Tripping and Removable Whipstock, Type GP Whipstock--Setting Operations, date unknown, 2 pages.
Miscellaneous literature, Gator Retrievable Whipstocks, Gator Manufacturing Company, date unknown, 1 page.
Introducing Christensen Window Cutting Services Catalog, Christensen Diamond Products Division, date unknown, 7 pages.
Miscellaneous literature, Baker Packers Completion Systems, Model DW-1 Whipstock Anchor/Packer System, 1 page.
Miscellaneous literature, Retrievable Whipstock, Baker Oil Tools, Jun., 1993, 10 pages.
Retrieve It . . . In One Trip, A-Z/Grant's Anchor-Stock/Sidetrack System is retrievable in one trip|, American Oil & Gas Reporter, Sep. 1993, 3 pages.
A-Z/Grant International Casing Sidetrack Systems Catalog, date unknown, 7 pages.
Greg Nazzal, et al., Casing Exit Options: Methods and New Technology, Caspiyneftegas-94, Sep. 21, 1994, held in Baku, Russia, pp. 1-9.
WindowMaster, Third Edition, Apr. 1994, Baker Hughes Inteq, pp. 1-31.
Miscellaneous literature, Success is something you can prove, Weatherford, date unknown, 2 pages.
Johnson John J.
Lueders Ed
Lynde Gerald
McKinley Bryan Franklin
Nazzal Greg
Baker Hughes Incorporated
Dang Hoang C.
LandOfFree
Method and apparatus for retrieving a 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 Method and apparatus for retrieving a whipstock, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for retrieving a whipstock will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-999654