Improved method for the drilling of oil wells

Details Improved method for the drilling of oil wells Improved method for the drilling of oil wells

E - Fixed Constructions

21

B

E21B 7/20 (2006.01) E21B 7/04 (2006.01) E21B 7/06 (2006.01) E21B 43/10 (2006.01) E21B 44/00 (2006.01)

Patent

CA 2396282

Method for the drilling of oil wells and for the positioning of the appropriate casings, consisting in drilling the well section of interest and, during the drilling, in maintaining a high degree of hole regularity by the use of automatic verticality and/or curvature control equipment. This method allows the positioning of casings with an almost constant clearance with values of +/- 1.5 inches for the whole well depth (lean profile).

La présente invention concerne un procédé de forage de puits de pétrole et de positionnement des tubage de revêtement approprié qui consiste à forer la section de puits concernée et, pendant ce forage, à maintenir une régularité de haut niveau du trou par l'utilisation d'un matériel de commande de verticalité et/ou de courbure automatique. Ce procédé permet de positionner ces tubages de revêtement en conservant un écartement constant de + ou - 1,5 pouces sur toute la profondeur du puits (profile rationnel).

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