Global Patent Index - EP 0866209 B1

EP 0866209 B1 2003-06-04 - Element for a rotating drill string

Title (en)

Element for a rotating drill string

Title (de)

Element für einen drehenden Bohrstrang

Title (fr)

Elément d'un train de tiges de forage rotatif

Publication

EP 0866209 B1 (FR)

Application

EP 98400538 A

Priority

FR 9703207 A

Abstract (en)

[origin: EP0866209A1] An element for a drill string comprises tubes whose external surfaces present helical grooves. These grooves transverse section is perpendicular to the axis of the string, which is in part counter-turned at the back of a radius of the string passed by the external extreme of the groove section in the direction of rotation. The transverse section of the groove is described by a straight line making a negative counter-turn angle ( beta ) with the radius of the transverse section of the string.

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

E21B 17/22; E21B 17/10

IPC 8 full level (invention and additional information)

E21B 17/10 (2006.01); E21B 17/22 (2006.01)

CPC (invention and additional information)

E21B 17/22 (2013.01); E21B 17/1064 (2013.01)

Designated contracting state (EPC)

AT DE FR GB IT NL

EPO simple patent family

EP 0866209 A1 19980923; EP 0866209 B1 20030604; AT 242419 T 20030615; DE 69815187 D1 20030710; DE 69815187 T2 20031204; FR 2760783 A1 19980918; FR 2760783 B1 19990730; NO 319236 B1 20050704; NO 981140 A 19980918; NO 981140 D0 19980313; US 6056073 A 20000502

INPADOC legal status


2018-10-19 [REG FR CA] CHANGE OF ADDRESS

- Effective date: 20180914

2018-10-19 [REG FR CD] CHANGE OF NAME OR COMPANY NAME

- Owner name: VALLOUREC DRILLING PRODUCTS FRANCE, FR

- Effective date: 20180914

2018-04-30 [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 EXPIRATION OF PROTECTION

- Effective date: 20180305

2018-03-28 [REG GB PE20] PATENT EXPIRED AFTER TERMINATION OF 20 YEARS

- Expiry date: 20180305

2017-05-31 [PGFP GB] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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2017-02-21 [REG FR PLFP] FEE PAYMENT

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2016-03-21 [REG FR PLFP] FEE PAYMENT

- Year of fee payment: 19

2009-10-30 [REG FR CD] CHANGE OF NAME OR COMPANY NAME

2009-10-30 [REG FR CJ] CHANGE IN LEGAL FORM

2009-10-30 [REG FR TP] TRANSMISSION OF PROPERTY

2005-12-01 [NLV4] NL: LAPSED OR ANULLED DUE TO NON-PAYMENT OF THE ANNUAL FEE

- Effective date: 20051001

2005-10-01 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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

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2004-05-26 [26N] NO OPPOSITION FILED

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2003-09-17 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

2003-07-10 [REF] CORRESPONDS TO:

- Document: DE 69815187 P 20030710

2003-06-04 [AK] DESIGNATED CONTRACTING STATES:

- Designated State(s): AT DE FR GB IT NL

2003-06-04 [REG GB FG4D] EUROPEAN PATENT GRANTED

- Free text: NOT ENGLISH

2002-06-12 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020426

1999-06-02 [AKX] PAYMENT OF DESIGNATION FEES

- Free text: AT DE FR GB IT NL

1999-06-02 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION)

- Designated State(s): AT DE FR GB IT NL

1999-03-03 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19981221

1998-09-23 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT DE FR GB IT NL

1998-09-23 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

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