Patent ID: 9228402
Filing Date: 2016-01-05
CPC Classification: E21B

Claim Text:
1. A flow control valve for a downhole motor, the valve comprising: a housing having a sidewall, an axial bore, and at least one port extending through the sidewall; a sleeve movably disposed within the axial bore of the housing, wherein the sleeve comprises a tubular body having a first portion, a second portion, and at least one opening extending through the tubular body, and wherein the sleeve is movable to align and offset said at least one opening with said at least one port of the housing; a first biasing member associated with the first portion of the sleeve, wherein the first biasing member biases the sleeve in a first direction, and wherein the first portion of the sleeve is movable between a first position engaged with the first biasing member and a second position disengaged from the first biasing member; and a second biasing member associated with the second portion of the sleeve, wherein the second biasing member biases the sleeve in the first direction, and wherein a pressure applied to the sleeve moves the sleeve in a second direction opposite the first direction, thereby compressing the first biasing member, compressing the second biasing member, disengaging the first portion of sleeve from the first biasing member, and moving the sleeve to align said at least one radial opening with said at least one port of the housing to permit transmission of the pressure through said at least one opening and said at least one port.