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1. (WO2001033034) AN ARRANGEMENT FOR DRILLING AND WORKOVER OF OIL AND GAS WELLS

Pub. No.:    WO/2001/033034    International Application No.:    PCT/NO2000/000368
Publication Date: Fri May 11 01:59:59 CEST 2001 International Filing Date: Sat Nov 04 00:59:59 CET 2000
IPC: E21B 19/07
E21B 19/15
E21B 19/20
Applicants: MERCUR SLIMHOLE DRILLING AND INTERVENTION AS
GLEDITSCH, Svein
FOSSLI, Børre
ROBICHAUX, Dicky
Inventors: GLEDITSCH, Svein
FOSSLI, Børre
ROBICHAUX, Dicky
Title: AN ARRANGEMENT FOR DRILLING AND WORKOVER OF OIL AND GAS WELLS
Abstract:
Arrangement for continuous lowering or hoisting of pipes in pressurized or pressureless wells, wherein a snubbing unit (3) continuously may be fed with pipes while the stepwise hoisting or lowering operation is carried out, such that the snubbing unit does not stop for coupling or de-coupling a new pipe length (17).