Bore hole grouting apparatus and method

Details Bore hole grouting apparatus and method Bore hole grouting apparatus and method

E - Fixed Constructions

21

B

E21B 33/138 (2006.01) E21B 27/02 (2006.01)

Patent

CA 2338416

The grouting apparatus includes a tubular body having a landing shoulder seatable on a drill string landing shoulder, and a closure and a nozzle mounted to opposite ends of the tubular body to form a container for grouting material. The closure includes overshot coupling member and a head having an inlet passage opening to the tubular body. A piston and a sleeve are movable in the tubular body to force the grouting material out of the container, and after the piston abuts against the nozzle, the sleeve moves relative to the piston to open a bypass channel through the piston and to the nozzle tube. Thereafter, fluid may be pumped through the container to mix with the grouting material that was forced out of the container and discharged into the bore hole.

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