Methods and apparatus for wellbore enhancement

Details Methods and apparatus for wellbore enhancement Methods and apparatus for wellbore enhancement

E - Fixed Constructions

21

B

E21B 7/14 (2006.01) E21B 43/24 (2006.01) E21B 43/28 (2006.01)

Patent

CA 2740059

Methods for enhancing existing wells, such as increasing the diameter of an existing well by hydrothermal spallation are provided. Such methods may include providing a housing comprising a reaction chamber and a catalyst element held within the reaction chamber, provid-ing at least one jet nozzle (29), contacting one or more unreacted fluids or solids with the catalyst element (25), wherein the unreacted fluid or solid is adapted to react with the catalyst element, thus generating a reacted flu-id, and emitting the reacted fluid through the at least one nozzle, wherein the at least one nozzle may be directed to a production zone of an internal wall of the existing well.

L'invention concerne des procédés d'amélioration de puits existants, par exemple en augmentant le diamètre d'un puits existant par spallation hydrothermique. Ces procédés peuvent comprendre la mise en place d'un boîtier comprenant une chambre de réaction et un élément catalyseur contenu à l'intérieur de la chambre de réaction, l'installation d'au moins une tuyère d'éjection, la mise en contact d'un ou de plusieurs fluide(s) ou solide(s) inaltéré(s) avec l'élément catalyseur, dans lesquels le fluide ou le solide inaltéré est adapté pour réagir avec l'élément catalyseur, générant ainsi un fluide altéré, et émettant le fluide altéré à travers ladite tuyère, dans lesquels ladite tuyère peut être orientée vers une zone de production d'une paroi interne du puits existant.

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