Extended reach drilling apparatus and method

Details Extended reach drilling apparatus and method Extended reach drilling apparatus and method

E - Fixed Constructions

21

B

E21B 4/18 (2006.01) E21B 7/20 (2006.01) E21B 23/14 (2006.01) E21B 43/10 (2006.01)

Patent

CA 2627284

A method for drilling a well in a formation including inserting a thruster (106) , a first conduit (104) , and a drill bit (105) into a wellbore (101) lined with a previous casing (103) and applying a force to the first conduit with the thruster so that the thruster grips onto the previous casing.

Procédé de forage d~un puits dans une formation, comportant les étapes consistant à insérer un propulseur (106), un premier conduit (104) et un trépan (105) dans un trou de forage (101) préalablement garni d~un tubage (103), et à appliquer une force sur le premier conduit au moyen du propulseur de façon à ce que celui-ci s~accroche sur le tubage.

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