Formation testing apparatus and method

Details Formation testing apparatus and method Formation testing apparatus and method

E - Fixed Constructions

21

B

E21B 47/10 (2006.01) E21B 23/00 (2006.01) E21B 34/10 (2006.01) E21B 49/08 (2006.01) E21B 34/00 (2006.01)

Patent

CA 2108914

The present invention provides an apparatus and method for testing a subterranean formation. The inventive apparatus comprises an internal-external differential pressure operated circulation tool, an external pressure operated drill stem testing tool, and an external pressure operated formation testing tool. The drill stem testing tool is positioned in the inventive apparatus beneath the circulation tool and the formation testing tool is positioned in the apparatus beneath the drill stem testing tool. In the method of the present invention, a testing string comprising the inventive apparatus is run into a well bore.

L'invention porte sur un appareil et une méthode pour effectuer des essais sur les formations souterraines. L'appareil comprend un outil circulaire fonctionnant avec la pression différentielle interne-externe ainsi qu'un outil d'essai aux tiges et un outil d'essai des couches, tous deux actionnés par la pression externe. L'outil d'essai aux tiges de l'invention est placé sous l'outil circulaire et l'outil d'essai des couches, sous l'outil d'essai aux tiges. Dans le cadre de la méthode de la présente invention, l'assemblage d'essai comprenant l'appareillage de l'invention est descendu dans un puits de forage.

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