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Remote Fire Gas Gun Maintenance
Question? What can be done to reduce maintenance on the Remote Fire Gas Gun?
The remote fire gas gun utilizes a solenoid with a small dart valve and a small orifice. The dart valve releases gas from behind a ½ inch moveable piston that allows gas from the gas gun volume chamber to flow into the well. These small moving parts will become clogged and inoperable if sand and debris are blown from the well into the gas gun volume chamber. Debris and sand will prevent the dart valve from properly sealing, and gas will bleed continuously from the gas gun volume chamber to atmosphere. This requires that the gas gun be disassembled, cleaned and reassembled. The gas gun volume chamber should be charged to a pressure in excess of well pressure with CO2 or nitrogen gas to close the gas valve and prevent well gasses and debris from the well being blown into the gas gun volume chamber. When the remote fire gas gun is placed onto the well, charge the gas gun volume chamber to a pressure in excess of well pressure before opening the casing valve. This will close the gas valve and prevent debris from being blown into the gas gun mechanism.
Also, most well gases contain water vapor. This water vapor will be blown into the gas gun volume chamber if the gas valve is not closed by pressure in the volume chamber in excess of the well pressure. This water will cause corrosion and rust that will further contaminate the mechanism.
For more information, see Preventative Maintenance for the Remote Fire Gas Gun