Global Patent Index - EP 0748925 B1

EP 0748925 B1 2000-11-02 - Method and device for casing a borehole with a deformable pipe

Title (en)

Method and device for casing a borehole with a deformable pipe

Title (de)

Verfahren und Vorrichtung zum Verrohren eines Bohrloches mit einem verformbaren Rohr

Title (fr)

Procédé et dispositif de tubage de puits avec un tube déformable

Publication

EP 0748925 B1 (FR)

Application

EP 96401098 A

Priority

FR 9507121 A

Abstract (en)

[origin: EP0748925A1] Method for lining a shaft (1) using a preformed tube (2) which can be inflated to deform it radially from a folded state in which its largest transverse dimension is less than the diameter of the shaft, to a state in which the preformed tube is cylindrical. The preformed tube can be blocked off at its two ends (3, 4) and can be hardened in the shaft to form the lining. The method includes the following stages:- means of disconnecting the blockers is introduced into the preformed tube and these are then removed to the surface in a receptacle with a smaller transverse dimension than the internal diameter of the hardened lining. Device for lining a shaft using the above method. The device contains means of disconnecting the blockers and a receptacle to place them in after hardening.

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

E21B 43/10; E21B 27/00; E21B 29/00; E21B 31/16

IPC 8 full level (invention and additional information)

E21B 27/00 (2006.01); E21B 29/00 (2006.01); E21B 31/16 (2006.01); E21B 43/10 (2006.01)

CPC (invention and additional information)

E21B 27/00 (2013.01); E21B 29/005 (2013.01); E21B 31/16 (2013.01); E21B 43/103 (2013.01)

Designated contracting state (EPC)

GB IT NL

EPO simple patent family

EP 0748925 A1 19961218; EP 0748925 B1 20001102; FR 2735523 A1 19961220; FR 2735523 B1 19970725; NO 310374 B1 20010625; NO 962489 A 19961216; NO 962489 D0 19960612; US 5787984 A 19980804

INPADOC legal status


2005-05-21 [PG25 IT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: IT

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20050521

2004-02-02 [NLV4] NL: LAPSED OR ANULLED DUE TO NON-PAYMENT OF THE ANNUAL FEE

- Effective date: 20031201

2004-01-14 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

- Effective date: 20030521

2003-12-01 [PG25 NL] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: NL

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20031201

2003-05-21 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: GB

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20030521

2002-05-31 [PGFP NL] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: NL

- Payment date: 20020531

- Year of fee payment: 7

2002-04-25 [PGFP GB] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: GB

- Payment date: 20020425

- Year of fee payment: 7

2002-01-01 [REG GB IF02] EUROPEAN PATENT IN FORCE AS OF 2002-01-01

2001-10-24 [26N] NO OPPOSITION FILED

2000-11-29 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20001102

2000-11-02 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): GB IT NL

2000-10-12 [ITF] IT: TRANSLATION FOR A EP PATENT FILED

- Owner name: MARIETTI E GISLON S.R.L.

1999-10-06 [17Q] FIRST EXAMINATION REPORT

- Effective date: 19990824

1997-08-20 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19970618

1996-12-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): GB IT NL