E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 33/12 (2006.01) E21B 43/116 (2006.01)
Patent
CA 2689315
The invention relates to a method for completing a borehole (1, 2) prior to the start of production, wherein after making the borehole (1, 2) the borehole wall (3) is anchored in a sealed manner with a conveying tube (4) and/or casing tube, and the borehole wall (3) is perforated with perforation units (5) at desired points. To complete a borehole without the use of cemented conveying tubes and/or casing tubes, it is proposed that the conveying tube (3) and/or casing tube be provided on its outer surface with a swellable sealing jacket (6), wherein the sealing jacket (6) swells after activation and anchors the annular gap between the conveying tube (4) and/or casing tube and the borehole wall (3) in a sealed manner and simultaneously centres the conveying tube (4) and/or casing tube in the borehole (1, 2).
L'invention concerne un procédé de conditionnement d'un trou de forage (1, 2), avant le début de la production, procédé selon lequel, après formage du trou de forage (1, 2), la paroi (3) du trou est ancrée de manière étanche avec un tube de transport (4) et/ou un tube de cuvelage, et la paroi (3) du trou est perforée en des points choisis, par des unités de perforation (5). En vue du conditionnement d'un trou de forage sans recourir à l'utilisation de tubes de transport (4) et/ou de tubes de cuvelage cimentés, l'invention est caractérisée en ce que le tube de transport (3) et/ou le tube de cuvelage est garni, sur sa surface extérieure, d'une enveloppe d'étanchéité à gonflement (6), en ce que l'enveloppe d'étanchéité (6) gonfle après activation et ancre, de manière étanche, l'espace annulaire entre le tube de transport (4) et/ou le tube de cuvelage, et la paroi (3) du trou de forage, et centre en même temps le tube de transport (4) et/ou le tube de cuvelage dans le trou de forage (1, 2).
Mcnelis Liam
Noelke Rolf-Dieter
Peeters Roland
Preiss Frank
Veehmayer Malte
Dynaenergetics Gmbh & Co. Kg
Robic
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