Statorless shear valve pulse generator
AssigneeBaker Hughes Holdings LLC
InventorBastian Sauthoff
Life of this patent
Estimating the term…
Abstract
An apparatus for generating pressure variances in a fluid flowing in a downhole tool having a longitudinal axis includes a flow section having an outer wall, a flow control member selectively blocking flow in the flow section, and an actuator moving the flow control member between a first position wherein the flow control member at least partially blocks flow in the flow section and a second position wherein the flow control member reduces the at least partial blockage of the flow in the flow section. The actuator may be disposed outside the outer wall of the flow section.
Claims20
An apparatus for generating pressure variances in a fluid flowing in a downhole tool having a longitudinal axis, comprising:
- a flow section directing the fluid flow, the flow section having an outer wall,
- a flow control member positioned inside the flow section and configured to selectively block the fluid flow in the flow section;
- an actuator configured to move the flow control member between a first position wherein the flow control member at least partially blocks the fluid flow in the flow section and a second position wherein the flow control member reduces the at least partial blockage of the fluid flow in the flow section, wherein the actuator is disposed outside the outer wall of the flow section;
- and
- a first flow line directing the fluid flow into the flow section and a second flow line receiving the fluid flow from the flow section, wherein the first flow line and the second flow line direct the fluid flow in a direction aligned with the longitudinal axis, wherein the first flow line is at least partially radially offset from the second flow line, and wherein the flow section is configured to direct the fluid flow from the first flow line in a direction that is transverse to the longitudinal axis of the downhole tool to the second flow line.
A method for generating pressure variances in a fluid flowing in a downhole tool having a longitudinal axis, comprising:
- directing the fluid flow in a flow section having an outer wall;
- selectively blocking the fluid flow in the flow section using a flow control member positioned inside the flow section, wherein the flow section directs the fluid flow in a direction that is transverse to a longitudinal axis of the downhole tool;
- and
- moving the flow control member between a closed position and an open position using an actuator, wherein the flow control member at least partially blocks the fluid flow in the flow section in the closed position, wherein the flow control member reduces the at least partial blockage of the fluid flow in the flow section in the open position, and wherein the actuator is disposed outside the outer wall of the flow section.
Dependencies are inferred from the claim text.