Patent ID: 9127528
Filing Date: 2015-09-08
Classification: E21B

Abstract:
1. A system of tool actuation, comprising: a multi-position downhole tool; and a hydraulic control module coupled to the multi-position downhole tool to control actuation of the multi-position downhole tool from an initial actuation position through a plurality of incremental actuation positions via a metering piston slidably disposed in a metering piston cylinder and based on receipt of pressurized actuation fluid from a first control line which delivers the pressurized actuation fluid through the hydraulic control module along a first control line passage separate from the metering piston, the hydraulic control module further controlling return of the multi-position downhole tool to the initial actuation position from any of the plurality of incremental actuation positions with a single pressure actuation from a second control line, the second control line delivering the single pressure actuation through the hydraulic control module along a second control line passage separate from the metering piston cylinder to provide a flow path to the multi-positioned downhole tool that does not enter the metering piston cylinder, the pressurized actuation fluid having a direct flow path to the multi-position downhole tool along the first control line passage without flowing into the metering piston cylinder, wherein movement through the plurality of incremental actuation positions is achieved with a series of pressure increases separated by pressure decreases in the first control line, the pressurized actuation fluid is exhausted through the first control when the multi-position downhole tool is returned to the initial actuation position, the hydraulic control module further comprises a spring member positioned to bias the metering piston toward an end of the metering piston cylinder, the first control line is connected to the metering piston cylinder at a first location and at a second distinct location and to a first side of the multi-position downhole tool, and the second control line is connected to the metering piston cylinder at a third location and at a fourth distinct location and to a second side of the multi-position downhole tool.