Global Patent Index - EP 1144794 A3

EP 1144794 A3 2002-09-11 - CONTROL SYSTEM FOR THE WORKOVER OF OIL WELLS

Title (en)

CONTROL SYSTEM FOR THE WORKOVER OF OIL WELLS

Title (de)

STEURERUNGSSYSTEM FÜR DIE WIEDERAUFARBEITUNG VON ERDÖLBOHRUNGEN

Title (fr)

PUITS

Publication

EP 1144794 A3 (EN)

Application

EP 99928157 A

Priority

  • GB 9902088 W
  • GB 9814114 A

Abstract (en)

[origin: WO0001915A2] A workover control system (10) has a hydraulic power unit (30) and an electrical signal control unit located on a vessel and a control module (36) located proximate to a subsea well (14). An electrohydraulic umbilical (32) transmits electrical and hydraulic power and signals from the vessel to the control module (36). During workover of the well, workover devices (12) are operated by hydraulic signals provided by an electrohydraulic switch in the control module. The hydraulic signals are produced in response to electrical signals from the vessel.

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

E21B 1/00

IPC 8 full level (invention and additional information)

E21B 33/035 (2006.01); E21B 41/00 (2006.01)

CPC (invention and additional information)

E21B 33/0355 (2013.01); E21B 33/035 (2013.01); E21B 41/0007 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

GB 2338971 A 20000112; GB 9915409 D0 19990901; AU 4527099 A 20000124; BR 9911630 A 20020115; EP 1144794 A2 20011017; EP 1144794 A3 20020911; GB 9814114 D0 19980826; NO 20006688 A 20010301; NO 20006688 D0 20001228; WO 0001915 A2 20000113; WO 0001915 A3 20011206

INPADOC legal status


2003-07-09 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20030101

2002-10-09 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020821

2002-09-11 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-10-17 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010131

2001-10-17 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-10-17 [XX] MISCELLANEOUS:

- Free text: DERZEIT SIND DIE WIPO-PUBLIKATIONSDATEN A3 NICHT VERFUEGBAR.