Global patent index - EP 0999338 A1

EP 0999338 A1 2000-05-10 - Remotely operable actuator for use in subterranean wells

Title (en)

Remotely operable actuator for use in subterranean wells

Title (de)

Fernbetätigungseinrichtung für unterirdische Bohrlöcher

Title (fr)

Système d'actionnement à distance pour utiliser dans les puits

Publication

EP 0999338 A1 (EN)

Application

EP 99308551 A

Priority

US 18452098 A

Abstract (en)

A remotely operable actuator for actuating tools within a subterranean well. In a described embodiment, a remotely controllable actuator includes multiple chambers (134,136,138) formed between an outer housing (128) and an inner mandrel (130). One of the chambers is filled with fluid, with the fluid preventing displacement of the mandrel (130) relative to the housing (128). When the fluid is discharged from the chamber, the mandrel (130) is displaced relative to the housing (128) due to a pressure differential between two of the chambers. Discharge of the fluid is controlled by a valve connected to a receiver. <IMAGE>

IPC 1-7 (main, further and additional classification)

E21B 23/04; E21B 33/035; E21B 34/10

IPC 8 full level (invention and additional information)

E21B 23/04 (2006.01); E21B 33/035 (2006.01); E21B 33/127 (2006.01); E21B 34/10 (2006.01)

CPC (invention and additional information)

E21B 33/1275 (2013.01); E21B 23/04 (2013.01); E21B 33/0355 (2013.01); E21B 34/102 (2013.01)

Citation (applicant)

Citation (search report)

Designated contracting state (EPC)

DE FR GB IE NL

EPO simple patent family

EP 0999338 A1 20000510; AU 5601899 A 20000504

INPADOC legal status

2002-11-06 [18D] DEEMED TO BE WITHDRAWN

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- Effective date: 20020503

2001-01-24 [AKX] PAYMENT OF DESIGNATION FEES

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2000-08-23 [17P] REQUEST FOR EXAMINATION FILED

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- Effective date: 20000627

2000-05-10 [AK] DESIGNATED CONTRACTING STATES:

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- Designated State(s): DE FR GB IE NL

2000-05-10 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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