In-situ formation strength testing with coring

E - Fixed Constructions – 21 – B

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E21B 49/06 (2006.01)

Patent

CA 2705928

A method and apparatus for estimating one or more formation properties using in-situ measurements conducted at or near a coring location include a coring tool adapted to cut a core sample in a formation, a member having a distal end that engages a borehole wall substantially adjacent the core sample, and a drive device that engages the member to the borehole wall with a force sufficient to estimate formation strength.

La présente invention concerne un procédé et un appareil permettant d'estimer une ou plusieurs propriétés de formations à l'aide de mesures in situ réalisées sur ou à proximité d'un site de carottage, comprenant un outil de carottage conçu pour découper une carotte dans une formation, un élément présentant une extrémité distale qui vient en contact avec la paroi d'un puits sensiblement adjacente à la carotte, et un dispositif d'entraînement qui vient en contact avec l'élément sur la paroi du puits avec une force suffisante pour estimer la résistance de la formation.

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