| 摘要 |
<p>A method of perforating a well, comprises: assembling on a tubing string, a perforating gun and a differential pressure firing head, the differential pressure firing head including an actuating piston with a high pressure side and a low pressure side running the tubing string into the well running a firing head actuator into the tubing string and landing the firing head actuator in the tubing string, and firing head actuator including a low pressure connecting the low pressure chamber with the low pressure side of the actuating piston and creating a pressure differential across the actuating piston moving the actuating piston in response to the pressure differential firing the perforating gun in response to moving the actuating piston.</p> |
