Time-delayed, downhole trigger

Abstract

A downhole actuator device is provided for use in directing wellbore fluid to be used in performing work in a wellbore by convening a pressure source into a force exerted over a distance. The core components of the downhole actuator device include a pressure chamber containing an insertable activation module, an insertable pressure source module capable of generating a pressure or force and a pressure responsive member. The core components of the pressure source module can include one or more of a plurality of optional formats for delivery of the force comprising a solenoid and a mechanical trigger, a non-explosive pyrotechnic device insert, or a charged gas module insert, which, when appropriately combined, sequenced and activated, will open a pressure responsive member that will allow wellbore fluid, at hydrostatic pressure, to enter the tool thereby providing the energy needed to actuate various mechanical and/or hydraulic components downhole. Multiple variations of the device are provided to allow for either pressure activated or surface activated variations of the device. Additional variable components may include a timer circuit, a power module, a proximal pressure actuated piston, various sub connections, a wireline or slickline cable.