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Sep 13

GN vacuum degasser is different with Derrick Vacu-Flo Degasser Model 500, both in structure and working principle,  but they have same function as follows.

GN drilling rig vacuum degasser(ZCQ series) is a special-purpose device for the treatment of gas-cut drilling fluid. It is a new type one we have designed and developed by combining different sorts of degassers from home and abroad. It’s applied to match with various mud purification system. It is important for returning mud gravity, stabilizing mud viscosity and reducing drilling cost. Also, it can be used as a heavy-power agitator during the operation of gas free mud.

vacuum degasser

vacuum degasser

Working principle of GN vacuum degasser

The vacuum degasser uses the suction of the vacuum pump to establish an under balanced pressure area in the vacuum cylinder and causes the drilling fluid into the hollow shaft of the rotator through suction pipe under the atmosphere pressure, and then lets the fluid spray to the walls of the cylinder from the windows on the hollow shaft, now the gas bubble cut in the mud may break and run off in the function of vacuum pump suction to a safe area due to the fluid collision and bubble separator. However, the mud will enter the drainage cavity forced by its self-weight and pass the rotator and discharge off the cylinder. In addition, drilling mud can enter the pump cylinder only through the suction pipe, and can’t be sucked in through the discharge pipe because the vacuum pump and the master motor are started simultaneously and the rotator connected to the motor will revolve at a high speed.

Trouble shooting of vacuum degasser operation:

1 After starting the device , unusual noise or extreme vibration occurs

 If it is cased by Solids enter the vacuum pump, you can Open the pump head and clean it, replace it if there are any breaks.

If it is cased by some anomalous matter enters the pump, open the square flange and clean it or open bottom cap and clean it.

2 Lower or zero vacuum or no mud in suction pipe

It may be cased by the following reasons.

1)    The vacuum pipe is not full of water or no water injection. Inject the pump with full water and adjust the ball valve along the injecting path.

2)    Space at both sides of the impeller is too big. Eliminate paper pads or change impeller to adjust the space.

3)    The temperature inside the pump is too high. Add more cold water.

4)    Sealing at the thread of each connection or vacuum pipe is not good. Tighten the bolt or seal the leaking point of the gas outlet pipe.

5)    Suction pipe and discharge pipe is not submerged into mud. Submerge it into mud.

For more questions of drilling fluids vacuum degasser, welcome to contact GN solids control.

written by GN Desander Desilter \\ tags: , , , , ,

3 Pings to “Drilling rig vacuum degasser”

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