Patent ID: 8727018
Filing Date: 2014-05-20
Classification: E21B

Abstract:
1. A charging unit of a system for activating a wellsite component of a wellsite, the activation system comprising an activation unit comprising a pump unit, a pressure circuit comprising an unloader valve to selectively permit fluid to pass from the pump unit to the wellsite component, and an accumulator bank operatively connectable to the pressure circuit to store at least a portion of the fluid under pressure for passage to the wellsite component whereby the wellsite component is selectively activated, the charging unit comprising: a charging circuit operatively connectable to the pressure circuit to selectively receive the fluid from the pump unit; a charging accumulator operatively connectable to the charging circuit to store at least a portion of the fluid received from the pump unit under pressure; and a pressure reducing valve operatively connectable to the charging circuit to selectively pass the fluid from the charging accumulator to the accumulator bank whereby an activation pressure of the fluid provided to the wellsite component is maintained.