E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 7/20 (2006.01) E21B 17/08 (2006.01)
Patent
CA 2562891
A conductor casing device (1) for establishing and lining a wellbore in unconsolidated sediments (51), the conductor casing (1) being arranged to be driven into and to displace the unconsolidated sediments (51) by axially directed impulses against an internal abutment (19) in the lower portion (15) of the conductor casing (1), where the conductor casing (1) is telescopic. The invention also comprises a method of driving a telescopic conductor casing (1) into unconsolidated sediments (51).
L'invention concerne un dispositif à tubage conducteur (1) permettant d'établir et de garnir un puits de forage dans des sédiments non consolidés (51), le tubage conducteur (1) étant disposé de manière à être entraîné dans les sédiments non consolidés et à déplacer ceux-ci (51) grâce à des impulsions dirigées de manière axiale contre une butée interne (19) dans la partie inférieure (15) du tubage conducteur (1), celui-ci (1) étant télescopique. L'invention concerne également un procédé d'entraînement d'un tubage conducteur télescopique (1) dans des sédiments non consolidés (51).
Strand Harald
Ridout & Maybee Llp
Strand Harald
LandOfFree
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