Inflatable plug with anchoring means

Details Inflatable plug with anchoring means Inflatable plug with anchoring means

E - Fixed Constructions

21

B

E21B 33/127 (2006.01) E21B 21/00 (2006.01) E21B 33/129 (2006.01) E21B 33/134 (2006.01) E21B 34/10 (2006.01) E21B 34/16 (2006.01) F16K 7/10 (2006.01)

Patent

CA 2240001

Completion method for avoiding formation impairment in the completion of a wellbore by anchoring and activating a plug (P) at a selected position in the wellbore to seal off a selected portion of the wellbore from other portions of the wellbore. The plug is positioned at the selected position in the wellbore and anchored at that position. A seal in the plug is then activated such that fluid cannot pass the plug. Other parts of the wellbore (10) can then be operated at different pressures than the isolated part of the wellbore (12) without impairment of the formation resulting from the loss of well fluids into the formation.

Cette invention se rapporte à un procédé d'achèvement permettant d'éviter la dégradation d'une formation lors de l'achèvement d'un forage de puits, et consistant à ancrer et à activer un bouchon (P) en une position sélectionnée du puits de manière à isoler une section sélectionnée de ce puits des autres sections dudit puits. On dispose et on ancre ledit bouchon au niveau de la position sélectionnée dans le puits. On active alors dans le bouchon un matériau de scellement de façon à ce que les fluides ne puissent passer au-delà dudit bouchon. On peut alors exploiter d'autres sections du puits (10) à des pressions différentes de la pression de la section isolée (12) du puits sans provoquer de dégradation de la formation résultant de la perte de fluides au sein de la formation.

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