Global Patent Index - EP 1242712 A1

EP 1242712 A1 2002-09-25 - COMBINED POWER TONG HAVING INTEGRATED MUD SUCTION AND THREAD DOPING APPARATUS

Title (en)

COMBINED POWER TONG HAVING INTEGRATED MUD SUCTION AND THREAD DOPING APPARATUS

Title (de)

KOMBINIERTE KRAFTZANGE MIT INTEGRIERTER SPÜLUNGSSEKTION UND MIT GEWINDESCHMIEREINRICHTUNG

Title (fr)

CLE DE VISSAGE COMBINEE A COMMANDE PNEUMATIQUE COMPORTANT UN APPAREIL INTEGRE D'ASPIRATION DE LA BOUE ET DE DOPAGE DE FILET

Publication

EP 1242712 A1 (EN)

Application

EP 99962585 A

Priority

  • NO 9900399 W
  • NO 996017 A

Abstract (en)

[origin: WO0149968A1] A power tong (25) including a dividable spinner and torque tong (1) for spinning in and tightening of a first pipe (20) into a second pipe (21), and an underneath located dividable back up tong (10) for fixedly retaining the second pipe (21) is disclosed. The tongs (1, 10) are axially moveable towards and away from each other. A liquid lock (35) is provided between the spinner and torque tong (1) and the back up tong (10), and a suction for evacuation from the liquid lock (35) the liquid that drains from the pipe (20) during a disconnecting operation between the joints of the pipes (20, 21).

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

E21B 19/16

IPC 8 full level (invention and additional information)

E21B 19/16 (2006.01); E21B 21/01 (2006.01)

CPC (invention and additional information)

E21B 21/01 (2013.01); E21B 19/164 (2013.01)

Citation (search report)

See references of WO 0149968A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 0149968 A1 20010712; AU 1899200 A 20010716; CA 2393752 A1 20010712; EA 003561 B1 20030626; EA 200200609 A1 20021226; EP 1242712 A1 20020925; NO 310527 B1 20010716; NO 996017 A 20010608; NO 996017 D0 19991207

INPADOC legal status


2004-12-08 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20040605

2004-01-07 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20031124

2002-09-25 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020708

2002-09-25 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2002-09-25 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL PAYMENT 20020708;LT PAYMENT 20020708;LV PAYMENT 20020708;MK PAYMENT 20020708;RO PAYMENT 20020708;SI PAYMENT 20020708