Patent ID: 8459363
Filing Date: 2013-06-11
Classification: E21B,Y10T

Abstract:
1. A control mechanism for use with a safety valve adapted to seal a well bore, the control mechanism comprising: at least one valve actuator for engaging with the safety valve, the at least one actuator being movable, in use, with respect to the well bore along an axis parallel to the well bore longitudinal axis, between a valve open position, in which the safety valve is open, and a valve closed position, in which the safety valve is closed; and biasing apparatus adapted to bias the at least one valve actuator to the valve closed position; wherein, in use, the at least one valve actuator extends from the safety valve up to a well bore well head; wherein the control mechanism further comprises a quick release device for permitting ease of engagement and disengagement from the at least one valve actuator, a second end of the at least one valve actuator comprising a quick release mechanism first portion and a second portion of the quick release mechanism being adapted to be engaged by an energising means, and wherein the second portion comprises latches for engaging the first portion, the latches being movably mounted or pivotally mounted to a second portion body.