E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/04 (2006.01) E03B 3/18 (2006.01)
Patent
CA 2705768
Method and apparatus for gravel packing an open-hole wellbore are disclosed. The apparatus includes a sandscreen disposed in the wellbore thereby creating an annulus between the wellbore and the sandscreen for receiving a gravel slurry. The apparatus further comprises a tubular member or wash pipe which is concentrically disposed in the sandscreen for receiving carrier fluid which passes through the sandscreen and for returning the carrier fluid to the earth's surface. At least one diverter valve is installed in the tubular member for permitting flow of the carrier fluid into the tubular member.
L'invention concerne un procédé et un appareil de gravillonnage d'un trou de forage non tubé. L'appareil comprend un filtre à sable disposé dans le trou de forage créant ainsi un anneau entre le trou et le filtre à sable pour recevoir une pâte de gravier. L'appareil comporte en outre un élément tubulaire ou un tube de lavage qui est concentriquement disposé dans le filtre à sable pour recevoir le fluide porteur qui traverse le filtre à sable et pour faire retourner le fluide porteur à la surface de la terre. Au moins un inverseur est installé dans l'élément tubulaire pour permettre l'écoulement du fluide porteur dans l'élément tubulaire.
Ceccarelli Tomaso U.
Parlar Mehmet
Stamm Bryan
Tibbles Raymond J.
Schlumberger Canada Limited
Smart & Biggar
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