EP 0213798 B1 19910403 - PACKER RETRIEVAL ASSEMBLY
Title (en)
PACKER RETRIEVAL ASSEMBLY
Publication
Application
Priority
GB 8519924 A 19850808
Abstract (en)
[origin: EP0213798A2] There is described a tool for retrieving from an oil well bore a packer. The packer has a through bore through which the retrieval assembly passes. The retrieval assembly comprises an elongate body member (1) having a packer releasing milling cutter (2) and a packer retaining member (3) mounted thereon, the retaining member being releasable from a first position to a second position, the first position being such that an outer face of the packer retaining member defines a diameter greater than the diameter of the packer bore, thus preventing the assembly from entering the bore, and the second position being such that the outer face of the packer retaining member defines a diameter less than the diameter of the packer bore, thus permitting the assembly to enter the bore and extend from the packer, whereupon the retaining member may return to the said first position such that the retaining member may support the packer.
IPC 1-7
IPC 8 full level
E21B 31/16 (2006.01); E21B 31/20 (2006.01)
CPC (source: EP)
E21B 31/16 (2013.01); E21B 31/20 (2013.01)
Designated contracting state (EPC)
DE GB NL
DOCDB simple family (publication)
EP 0213798 A2 19870311; EP 0213798 A3 19890111; EP 0213798 B1 19910403; DE 3678512 D1 19910508; GB 8519924 D0 19850918; NO 863196 D0 19860807; NO 863196 L 19870209
DOCDB simple family (application)
EP 86306065 A 19860806; DE 3678512 T 19860806; GB 8519924 A 19850808; NO 863196 A 19860807