E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/08 (2006.01) E21B 43/10 (2006.01)
Patent
CA 2683342
A downhole apparatus is described comprising a main body coupled with a well tubing and a swellable mantle disposed on the main body. The swellable mantle expands upon contact with at least one predetermined fluid, and the main body comprises at least one opening for fluid flow between an exterior of the main body and the bore. An insert permits the passage of fluid, through the swellable mantle, between the exterior of the apparatus and the opening. In one aspect of the invention a screen filters solids between the exterior of the apparatus and the bore, and a swellable mantle comprises a first region which allows the passage of fluid between the exterior of the apparatus and the main body and a second region, circumferentially adjacent the first region, which substantially prevents passage of fluid. Corresponding well completion and production methods are also described.
La présente invention concerne un appareil pour fond de puits comprenant un corps principal couplé à un tubage de puits et un manchon gonflable disposé sur le corps principal. Le manchon gonflable se dilate au contact d'au moins un liquide prédéterminé, et le corps principal comprend au moins une ouverture pour l'écoulement de liquide entre l'extérieur du corps principal et le forage. Un insert permet le passage de liquide, à travers le manchon gonflable, entre l'extérieur de l'appareil et l'ouverture. Dans un aspect de l'invention, un tamis filtre les solides entre l'extérieur de l'appareil et le trou de forage, et un manchon gonflable comprend une première région qui permet le passage de liquide entre l'extérieur de l'appareil et le corps principal et une seconde région, adjacente de manière circonférentielle à la première région, qui empêche pratiquement le passage de liquide. L'invention concerne également des procédés correspondants de complétion de puits et de production.
Nutley Brian
Nutley Kim
Goodwin Mckay
Swelltec Limited
LandOfFree
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