EP 1488073 B2 20120801 - DYNAMIC ANNULAR PRESSURE CONTROL APPARATUS AND METHOD
Title (en)
DYNAMIC ANNULAR PRESSURE CONTROL APPARATUS AND METHOD
Title (de)
DAPC-VORRICHTUNG UND -VERFAHREN
Title (fr)
APPAREIL ET PROCEDE DE REGULATION DE PRESSION DYNAMIQUE ANNULAIRE
Publication
Application
Priority
- US 0305012 W 20030219
- US 35822602 P 20020220
Abstract (en)
[origin: WO03071091A1] A system and method for controlling formation pressures during drilling of a subterranean formation utilizing a selectively fluid backpressure system in which fluid is pumped down the drilling fluid return system in response to detected borehole pressures. A pressure monitoring system is further provided to monitor detected borehole pressures, model expected borehole pressures for further drilling and control the fluid backpressure system.
IPC 8 full level
E21B 21/08 (2006.01); E21B 21/10 (2006.01); E21B 44/00 (2006.01)
CPC (source: EP US)
E21B 21/08 (2013.01 - EP US); E21B 21/106 (2013.01 - EP); E21B 44/00 (2013.01 - EP)
Citation (opposition)
Opponent :
- WO 0250398 A1 20020627 - IMPACT ENGINEERING SOLUTIONS L [GB], et al
- US 4739325 A 19880419 - MACLEOD NORMAN C [US]
- US 6177882 B1 20010123 - RINGGENBERG PAUL [US], et al
- US 5359324 A 19941025 - CLARK BRIAN [US], et al
- US 6370082 B1 20020409 - GARDNER WALLACE R [US], et al
- US 5168932 A 19921208 - WORRALL ROBERT N [NL], et al
- US 5975219 A 19991102 - SPREHE PAUL ROBERT [US]
- US 3552502 A 19710105 - WILSON WILLIAM PAUL SR
- US 4630675 A 19861223 - NEIPLING LAWRENCE E [US], et al
- US 3827511 A 19740806 - JONES M
- GERD SCHAUMBERG: "BOHRLOCH KONTROLL HANDBUCH", vol. 1+2, 1998, DRUCK GOSLAR SUEDWALL, D 29221 CELLE
- G V CHILINGARIAN: "Dilling and Drilling Fluids", 1981
Designated contracting state (EPC)
BE GB
DOCDB simple family (publication)
WO 03071091 A1 20030828; WO 03071091 A8 20041014; WO 03071091 A9 20040624; AR 038529 A1 20050119; AU 2003211155 A1 20030909; AU 2003211155 B2 20080417; AU 2003211155 B9 20080605; CA 2477242 A1 20030828; CA 2477242 C 20110524; CN 100535380 C 20090902; CN 1643233 A 20050720; EG 23370 A 20050228; EP 1488073 A1 20041222; EP 1488073 B1 20060809; EP 1488073 B2 20120801; MX PA04008063 A 20050620; NO 20043906 L 20041117; NO 338967 B1 20161107; OA 12776 A 20060706; RU 2004127944 A 20050510; RU 2301319 C2 20070620
DOCDB simple family (application)
US 0305012 W 20030219; AR P030100544 A 20030220; AU 2003211155 A 20030219; CA 2477242 A 20030219; CN 03806814 A 20030219; EG 2003020170 A 20030219; EP 03742832 A 20030219; MX PA04008063 A 20030219; NO 20043906 A 20040917; OA 1200400218 A 20030219; RU 2004127944 A 20030219