Global Patent Index - EP 0841266 B1

EP 0841266 B1 2001-02-28 - Method and device for flooding of gas storage caverns

Title (en)

Method and device for flooding of gas storage caverns

Title (de)

Verfahren und Vorrichtung zum Fluten von Speicherkavernen

Title (fr)

Procédé et dispositif pour inonder des cavernes de stockage de gaz

Publication

EP 0841266 B1 (DE)

Application

EP 97250323 A

Priority

DE 19647706 A

Abstract (en)

[origin: EP0841266A2] This new method is used when flooding underground storage chambers, especially for gas. At least the minimum geo-mechanical pressure is contained. In the novel method, a liquid column of flooding medium is established. This is maintained throughout the flooding process, and is used in flooding the chamber. The pressure of the fluid column is used in automatic compensation of the internal pressure arising in the chamber. Should there be an interruption of flooding flow, the chamber is automatically shut off. Also claimed is equipment to carry out the method. In the chamber borehole (16) a flooding tube string (13) is built in. This comprises an outer tube (10) with an overflow opening (8) and is closed at the pipe saddle (5). It includes an inner tube (9).

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

B65G 5/00

IPC 8 full level (invention and additional information)

E21B 41/00 (2006.01)

CPC (invention and additional information)

E21B 41/0057 (2013.01)

Designated contracting state (EPC)

DK FR GB NL

EPO simple patent family

DE 19647706 C1 19980430; DK 0841266 T3 20010618; EP 0841266 A2 19980513; EP 0841266 A3 19981209; EP 0841266 B1 20010228

INPADOC legal status


2009-11-30 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2009-07-24 [REG FR ST] NOTIFICATION OF LAPSE

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2009-07-01 [NLV4] NL: LAPSED OR ANULLED DUE TO NON-PAYMENT OF THE ANNUAL FEE

- Effective date: 20090501

2009-06-24 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

- Effective date: 20081030

2009-06-08 [REG DK EBP] PATENT LAPSED

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2002-02-20 [26N] NO OPPOSITION FILED

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

2001-06-29 [ET] FR: TRANSLATION FILED

2001-06-18 [REG DK T3] TRANSLATION OF EP PATENT

2001-06-13 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20010518

2001-02-28 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): DK FR GB NL

2000-08-16 [RAP3] CORRECTION OF THE ADDRESS OR NAME OF APPLICANT (A DOCUMENT)

- Owner name: UNTERGRUNDSPEICHER- UND GEOTECHNOLOGIE-SYSTEME GMB

2000-08-16 [RAP3] CORRECTION OF THE ADDRESS OR NAME OF APPLICANT (A DOCUMENT)

- Owner name: VNG - VERBUNDNETZ GAS AKTIENGESELLSCHAFT

2000-08-02 [RTI1] TITLE (CORRECTION)

- Free text: METHOD AND DEVICE FOR FLOODING OF GAS STORAGE CAVERNS

2000-05-17 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20000330

1999-09-23 [REG DE 8566] DESIGNATED COUNTRY DE NOT LONGER VALID

1999-08-18 [AKX] PAYMENT OF DESIGNATION FEES

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1998-12-09 [AK] DESIGNATED CONTRACTING STATES:

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1998-12-09 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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1998-05-13 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19971030

1998-05-13 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): DK FR GB NL

1998-05-13 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;RO;SI