Global Patent Index - EP 0353309 B1

EP 0353309 B1 1997-02-05 - METHOD OF CONSTRUCTING A WELL

Title (en)

METHOD OF CONSTRUCTING A WELL

Title (de)

VERFAHREN ZUM BAU EINES LOCHS

Title (fr)

PROCEDE POUR CONSTRUIRE UN PUITS

Publication

EP 0353309 B1 (DE)

Application

EP 89901623 A

Priority

  • SU 8800234 W
  • SU 4366623 A

Abstract (en)

[origin: WO8906739A1] A method of constructing a well consisting in drilling the rock, casing the latter with a guiding column (1) of pipes, with a guide (2) and with an exploitation column (6) of pipes, and in isolating drilling zones (3) which present complications with profiled pipes (4) of which the diameter is enlarged at the time of installation. The enlargement of the profiled pipes (4) is effected by creating a pressure gradient inside them, with their subsequent expanding by rolling. The drilling of the rock after the casing of the well with the guiding column (1) of pipes and with the guide (2) is effected by means of a drill-bit of one and the same diameter whereas the complicated drilling zones (3) are enlarged to a diameter equal to the external diameter of the expanded profiled pipes (4) which are consecutively mounted in all the complicated drilling zones (3) as they are entered.

IPC 1-7

E21B 33/00; E21B 33/10; E21B 33/12; E21B 33/13

IPC 8 full level

E21B 33/13 (2006.01); E21B 7/00 (2006.01); E21B 17/00 (2006.01); E21B 29/10 (2006.01); E21B 33/14 (2006.01); E21B 43/10 (2006.01)

CPC

E21B 43/103 (2013.01); E21B 7/00 (2013.01); E21B 17/00 (2013.01); E21B 29/10 (2013.01); E21B 33/14 (2013.01)

DCS

DE FR GB IT

DOCDB simple family

EP 0353309 A1 19900207; EP 0353309 A4 19910508; EP 0353309 B1 19970205; AU 2939589 A 19890811; AU 606777 B2 19910214; CA 1301635 C 19920526; CN 1015808 B 19920311; CN 1034973 A 19890823; DE 3855787 D1 19970320; HU 890982 D0 19901228; HU T57371 A 19911128; IN 170723 B 19920509; JP 2530737 B2 19960904; JP H02503097 A 19900927; MX 171802 B 19931115; NO 300986 B1 19970825; NO 893732 D0 19890919; NO 893732 L 19890919; SU 1679030 A1 19910923; US 4976322 A 19901211; WO 8906739 A1 19890727