FRACTURING VALVE AND FRACTURING TOOL STRING

摘要

A fracturing valve comprising a tubular mandrel having a through bore continuous with a tubing string, and a frac window through the side of the tubular mandrel. An outer sleeve is radially disposed around the tubular mandrel. The outer sleeve includes a sleeve port in a sidewall. The tubular mandrel slides relative to the sleeve by application and release of set down weight on a coiled tubing string. When the valve is closed, there is no fluid communication from the tubing string out of the frac window. When the valve is open, fluid communication from the tubing string is enabled. The valve may be installed in a downhole tool having a perforation device. The tool string can be used with one sealing element as the tool is pulled up the hole isolating lower perforations, or with two sealing elements to allow pin-point treatments isolating perforations both up and downhole.

主权项

1. A fracturing valve for a downhole tool, the valve comprising:
a tubular having a throughbore, the tubular being adapted to be connected in a tubing string, the tubular having window formed through the tubular; an outer sleeve disposed around the tubular, the outer sleeve having a port formed in a sidewall of the sleeve, the valve being arranged such that the tubular and the sleeve are axially moveable relative to one another from a first position in which the window and port are aligned such that fluid can exit the valve through the aligned window and port and a second position in which fluid cannot exit the valve and the valve being further arranged such that movement from the first position to the second position can be effectuated by applying a mechanical force to the tubular.