US 12,454,865 B1
Valve system for selective control of drilling fluid flow
Edward Richards, Cheltenham (GB)
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
Filed on Sep. 12, 2024, as Appl. No. 18/883,598.
Int. Cl. E21B 7/06 (2006.01); E21B 21/10 (2006.01)
CPC E21B 7/065 (2013.01) [E21B 7/06 (2013.01); E21B 21/10 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A downhole tool for forming a wellbore, comprising:
a plurality of jets configured to flow a main flow of a flow of drilling fluid out of the downhole tool along a plurality of main flow paths of the main flow;
a plurality of main valves in fluid communication with the plurality of jets along the plurality of main flow paths and being actuatable to control the main flow through the plurality of jets, wherein the plurality of main valves is actuatable based on a control flow of the flow of drilling fluid, wherein the plurality of main valves corresponds to the plurality of jets;
a control valve in fluid communication with the plurality of main valves along a plurality of control flow paths of the control flow and configured to direct the control flow selectively to the plurality of main valves to selectively actuate the plurality of main valves based on a selective mechanical input to the control valve; and
a mechanical input mechanism for providing the selective mechanical input to the control valve.