Continuous rotation coiled tubing orienting tool with passive hydraulic control
AssigneeSchlumberger Technology Corporation
InventorsAshley Bernard Johnson, Jeremy Thomas Murphy
Life of this patent
Estimating the term…
Abstract
An orienting tool includes a first collar configured to rotate with respect to a second collar. A hydraulic pump is deployed in the first collar. A drive shaft of the hydraulic pump is rotationally coupled to the second collar. The hydraulic pump is configured to provide pressurized hydraulic fluid to a metering valve in the first collar that is configured to restrict flow of the pressurized hydraulic fluid and thereby resist rotation of the drive shaft and the second collar relative to the first collar via back pressure to the hydraulic pump.
Claims20
An orienting tool configured for use in a coiled tubing bottom hole assembly, the orienting tool comprising:
- a first collar configured to rotate with respect to a second collar;
- a hydraulic pump deployed in the first collar, a drive shaft of the hydraulic pump rotationally coupled to the second collar, the hydraulic pump configured to provide pressurized hydraulic fluid to a metering valve in the first collar;
- and
- the metering valve configured to restrict flow of the pressurized hydraulic fluid and thereby resist rotation of the drive shaft and the second collar relative to the first collar via back pressure to the hydraulic pump.
A method for coiled tubing drilling comprising:
- deploying a coiled tubing bottom hole assembly in a wellbore, the bottom hole assembly including an orienting tool comprising a first collar configured to rotate with respect to a second collar, a hydraulic pump deployed in the first collar, a drive shaft of the hydraulic pump rotationally coupled to the second collar, the hydraulic pump configured to provide pressurized hydraulic fluid to a metering valve in the first collar, and the metering valve configured to restrict flow of the pressurized hydraulic fluid and thereby resist rotation of the drive shaft and the second collar relative to the first collar via back pressure to the hydraulic pump;
- and
- using the coiled tubing bottom hole assembly to drill the wellbore, the drive shaft driven by reactive torque in the second collar from the drilling to actuate the hydraulic pump such that the second collar rotates with respect to the first collar.
An orienting tool configured for use in a coiled tubing bottom hole assembly, the orienting tool comprising:
- a first collar configured to rotate with respect to a second collar;
- a hydraulic pump deployed in the first collar, a drive shaft of the hydraulic pump rotationally coupled to the second collar, the hydraulic pump configured to provide pressurized hydraulic fluid to a metering valve in the first collar;
- the metering valve configured to restrict flow of the pressurized hydraulic fluid and thereby resist rotation of the drive shaft and the second collar relative to the first collar via back pressure to the hydraulic pump;
- and
- an electronic controller configured to:
- incrementally open the metering valve to increase a rotation rate of the second collar with respect to the first collar;
- and
- incrementally close the metering valve to decrease a rotation rate of the second collar with respect to the first collar.
Dependencies are inferred from the claim text.