Method and apparatus for performing chemical treatments of...

E - Fixed Constructions – 21 – B

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E21B 43/02 (2006.01) E21B 33/138 (2006.01)

Patent

CA 2568593

Disclosed is a method for strengthening a wellbore with an exposed geological formation, the method including: determining or estimating material properties of the exposed geological formation; determining changes necessary in material properties of the exposed geologic formation to achieve desired improvements in property of the exposed geologic formation; and treating the geological formation to improve material property values by injecting a formulation that hardens in-situ to form a geosynthetic composite. In another aspect, the present invention relates to an apparatus for utilizing the described method with minimal handling of chemicals which is an automated in-line chemical metering and pumping apparatus that requires no large mixing tank.

L'invention concerne un procédé permettant de renforcer un puits de forage comprenant une formation géologique exposée. Ce procédé consiste à déterminer ou à estimer des propriétés matérielles de la formation géologique exposée ; à déterminer les modifications nécessaires dans les propriétés matérielles de la formation géologique exposée pour obtenir les améliorations désirées dans les propriétés de la formation géologique exposée ; et à traiter la formation géologique pour améliorer les valeurs des propriétés matérielles, en injectant une préparation qui durcit in situ pour former un composite géosynthétique. Un autre aspect de la présente invention concerne un dispositif destiné à la mise en oeuvre dudit procédé, comprenant un dispositif de pompage et de mesure en ligne automatisé permettant de réduire à un minimum les manipulations de substances chimiques et ne nécessitant pas de réservoir de mélange de grande taille.

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