EP 0216527 A2 19870401 - Methods and apparatus for well completion operations.
Title (en)
Methods and apparatus for well completion operations.
Title (de)
Verfahren und Vorrichtung zum Ausführen von Arbeiten in einem Bohrloch.
Title (fr)
Procédé et dispositif pour les opérations d'intervention dans les puits.
Publication
Application
Priority
US 77050285 A 19850827
Abstract (en)
A well tool (220), eg. a packer, a firing head or a release sub, Comprises a member (52) slidable relative to the housing (38) of the tool, to actuate the tool. A separate actuator assembly (182) is receivable in the tool and includes a chamber (219) at a pressure lower than the well pressure. Means (55; 196) are provided for applying well pressure to one side of the member and said chamber pressure to the other side of the member, to cause the member to slide to actuate the tool. Advantageously, the member (52) is a sleeve or piston.
IPC 1-7
IPC 8 full level
E21B 23/06 (2006.01); E21B 33/129 (2006.01); E21B 33/1295 (2006.01)
CPC (source: EP)
E21B 23/06 (2013.01); E21B 33/1295 (2013.01)
Designated contracting state (EPC)
AT DE FR GB IT NL
DOCDB simple family (publication)
EP 0216527 A2 19870401; EP 0216527 A3 19880727; EP 0216527 B1 19901128; AT E58778 T1 19901215; AU 586017 B2 19890629; AU 6156586 A 19870305; CA 1269615 A 19900529; DE 3675867 D1 19910110; NO 863416 D0 19860826; NO 863416 L 19870302
DOCDB simple family (application)
EP 86306608 A 19860827; AT 86306608 T 19860827; AU 6156586 A 19860818; CA 516971 A 19860827; DE 3675867 T 19860827; NO 863416 A 19860826