Method of operating a multi-mode downhole tool

Details Method of operating a multi-mode downhole tool Method of operating a multi-mode downhole tool

E - Fixed Constructions

21

B

166/3

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

Patent

CA 1228532

ABSTRACT Disclosed is a method of operating a multi-mode downhole tool including a drill pipe tester mode and a circu- lation mode and having a longitudinal bore extending there- through. The method comprises running the tool into a well bore on a pipe string; setting a packer in the well bore below the tool to isolate the well bore above the packer from that therebelow; pressure-testing the integrity of the pipe string against a closed bore closure valve disposed in the bore of the tool while the tool is in the drill pipe tester mode; and pressure-testing the seal between the set packer and the wall of the well bore while the tool is in the drill pipe tester mode by increasing well bore pressure above the set packer without opening the bore closure valve or changing the tool to a different operating mode.

528674

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