Pressure Pulse Gas Gun
Pressure Pulse Gas Gun - 1500 psi
The durable and portable stainless steel Pressure Pulse Gas Gun delivers the compressed gas shot for fluid level testing with the Acoustic Fluid Loggers from Sage Technologies.
The 1500 psi working pressure gas gun has a large shot chamber for testing deep or shallow wells, and the 2" line pipe threads on its base allow attachment directly to most wellheads. A side-to-side shuttle valve shooting mechanism makes the compact Pressure Pulse Gas Gun easy to shoot under varied well conditions.
Designed to use CO2 for the compressed gas fluid shot; Nitrogen compatible. Designed for the Acoustic Fluid Loggers from Sage Technologies, and also compatible with other fluid level systems.
Taking the Shot
To shoot the standard fluid level - positive pressure wave:
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Connect the gun to the wellhead
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Slide the shuttle valve toward Load
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Charge the gun with gas (bottled carbon dioxide or nitrogen) through the stab-in fill valve
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Push the shuttle valve toward Fire
Inside the gun is a sensitive microphone, which begins registering echoes inside the wellhead from the instant the gas gun is fired.
The Pressure Pulse and its intermal microphone are attached to the Acoustic Fluid Logger via a microphone cable.
Once the echo signal reaches the fluid logger, its internal electronics take over and create the fluid level graph, on a thermal paper tape for the AFL III, or on a computer screen for the AFL IV.
Powering the Shot
The standard gun operates with compressed carbon dioxide -- CO² -- which is supplied through a pressure-rated aluminum bottle and charge hose.
The bottle will hold about 200 gas shots, depending on shot size, when filled with 2.5 pounds of compressed CO² gas.
For operation in extreme cold, we offer an optional nitrogen -- N² -- adapter for the charge hose.
Another fluid level method possible with these gas guns is the negative pressure wave, which uses gas moving from the well into the gas gun to find the fluid level, rather than using a shot of compressed gas.
Accuracy
The Pressure Pulse Gas Gun offers the accuracy of a precision instrument in an easy-to-understand package. An internal microphone in the gun registers the fluid level signal with the sensitivity you need for fluid level testing in a wide range of oil and gas well conditions.
Two liquid-filled gauges accompany the gun -- the standard 1,500 psi gauge for the fluid level test, and the 200 psi gauge to read casing pressure before the test. Both gauges are fitted with quick-connects: easy to change stab-in connectors.
Occasionally, depending on age and situational usage, the gas gun will require cleaning and maintenance. A repair kit of o-rings and valve cores and special tools are included with the gun purchase.
Option with AFL IV: Pressure Transducer
To calculate gas afterflow in the casing or the wellbore the Sage Pressure Transducer completes a small pressure casing buildup before the fluid level shot.
The Pressure Transducer attaches to the top of the Pressure Pulse Gun at the quick connect, instead of the usual pressure gauge. Cables connect both the pressure transducer and the internal microphone in the Pressure Pulse Gun to the Acoustic Fluid Logger IV unit.
Before the fluid level shot is taken, the Pressure Transducer completes a short-duration pressure casing buildup, which enables calculation of the gas afterflow in the casing or in the wellbore.
When the AFL IV knows the gas afterflow, the software calculates the gas free fluid level, (the percentage of true liquid in the fluid column) which delivers a more accurate true fluid level depth.