Multi-mode testing tool for use in a well bore

Details Multi-mode testing tool for use in a well bore Multi-mode testing tool for use in a well bore

E - Fixed Constructions

21

B

166/3

E21B 47/06 (2006.01) E21B 34/10 (2006.01) E21B 43/25 (2006.01) E21B 47/00 (2006.01) E21B 47/10 (2006.01) E21B 49/08 (2006.01)

Patent

CA 1229041

ABSTRACT A multi-mode testing tool for use in a well bore. The tool comprises a tubular housing having circulation ports extending through the wall thereof; and a tubular mandrel defining a longitudinal tool bore longitudinally slidably disposed in the housing and having circulation apertures extending through the wall thereof and alignable with the circulation ports through longitudinal movement of the mandrel in the housing. It also comprises a tool bore closure valve adapted to block the tool bore responsive to longitudinal movement of the mandrel; and a device adapted to effect the longitudinal mandrel movement in response to pressure changes in the well bore. The above device further includes a lost motion device to selectively disconnect the tool bore closure valve from the mandrel.

528667

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