Compression-actuated multi-cycle circulation valve

摘要

A downhole tool conveyed via tubing within a wellbore at a wellsite comprises a hydraulic tool driven by fluid pumped to the hydraulic tool via the tubing. The downhole tool further comprises a valve in fluid communication between the tubing and the hydraulic tool. The valve is configurable in the wellbore between an expanded position, establishing a bypass diverting at least a portion of the pumped fluid away from the hydraulic tool, and a compressed position, closing the bypass.

主权项

1. A method, comprising:
conveying a downhole tool within a wellbore extending from a wellsite surface via tubing until the tool encounters an obstruction in the wellbore, wherein the obstruction imparts an axial force on the tool to shift the tool from an expanded position to an operating position; holding the downhole tool in the operating position by applying a resistive axial force thereto; adjusting operation of the downhole tool by adjusting a pumping pressure or flow rate at which fluid is pumped along a flowpath of the tubing to the downhole tool from the wellsite surface; continuing operation of the downhole tool until the obstruction is cleared; adjusting operation of the downhole tool by adjusting the pumping pressure or flow rate comprises initiating rotation of a milling portion of the downhole tool, and wherein the method further comprises: withdrawing the downhole tool from the obstruction while the downhole tool is held in the operating position prior to initiating rotation of the milling portion of the downhole tool; and advancing the rotating milling portion into contact with the obstruction to mill into the obstruction.