US 11,702,895 B2
Statorless shear valve pulse generator
Bastian Sauthoff, Burgdorf (DE)
Assigned to Baker Hughes Holdings LLC, Houston, TX (US)
Filed by Baker Hughes, a GE company, LLC, Houston, TX (US)
Filed on Aug. 30, 2019, as Appl. No. 16/557,440.
Claims priority of provisional application 62/763,132, filed on Aug. 30, 2018.
Prior Publication US 2020/0072005 A1, Mar. 5, 2020
Int. Cl. E21B 21/08 (2006.01); E21B 47/06 (2012.01); E21B 49/00 (2006.01); E21B 47/22 (2012.01); E21B 47/12 (2012.01)
CPC E21B 21/08 (2013.01) [E21B 47/06 (2013.01); E21B 49/003 (2013.01); E21B 47/124 (2013.01); E21B 47/22 (2020.05)] 20 Claims
OG exemplary drawing
 
1. 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.