US 12,345,111 B1 · Rotating check valve for improved downhole operations

Abstract

A rotating check valve is disclosed for improved debris collection within a wellbore. The check valve can be part of a debris removal tool that includes a motor, pump, gearbox, bailer, milling bit, the check valve, rotational shafts. On its uphole end, the check valve can be coupled with the bailer such that the check valve can rotate relative to the bailer. Also on the uphole end, the check valve can be rotationally coupled to a shaft that passes through the bailer and couples with the gearbox. On the downhole end, the check valve can be rotationally coupled to the milling bit. The check valve can include a torque transfer mechanism that transfers torque generated by the motor and gearbox to the milling bit. The check valve can include a unidirectional flow control mechanism that restricts the flow of fluid and debris to the uphole direction.

Claims17

Dependent claims

A check valve for debris collection within a wellbore, comprising:

a first coupling mechanism for coupling the check valve with an uphole bailer;
a torque transfer mechanism that applies rotational torque to a rotating milling bit, wherein the torque transfer mechanism includes a geometric protrusion with more than two sides and the rotating milling bit includes a cavity that matches the geometric protrusion such that the geometric protrusion can be seated in the cavity;
a second coupling mechanism for coupling the check valve with the rotating milling bit;
a lumen extending an axial length of the check valve;
and
a unidirectional flow control mechanism within the lumen that restricts fluid flow to an uphole direction.

3 more elements

Dependencies are inferred from the claim text.

Rotating check valve for improved downhole operations

Life of this patent

Rotating check valve for improved downhole operations

Life of this patent

Abstract

Claims17