Category Archives: Mud Gas Separator

Drilling fluid mud gas separator is a special equipment of gas cut drilling fluid primary degassing, it is mainly used to eliminate the bubbles which the diameter is about 3-25 mm. The big bubbles is aiming at the expansion gas which is fully the borehole, if it is not eliminated, it will causes the well kick even spurt the surface of drill plate. The equipment uses the prevent sulfur material and adapts the gas with H2s processing.

Working theory

The gas cut drilling fluid enter into separator from the separator inlet month, after impacting with the impact plate, scattered in a series baffle, crashing and increase and reveal the surface area, then downward flow causing the flocculated flow state, make the gas separation with drilling fluid. The free gas is discharged through the gas outlet of the top tank, the length of the exhaust pipe is decided and installed by the field and is lead to the safe place, but the after degassing drilling fluid flow into circulating tank through drilling fluids shale shaker.

Installation

It is installed in the ground near the 1 circulating tank, using the wire rope fixed the lifting lug place up the separator main body with the ground.

According the requirements of diagram form to connect the line after install well.

Maintenance

We should check the bottom buffer plate when use it, we must replace the two baffle if the wearing is extend 10 mm.

The drilling fluid in mud gas separator should be emptying after use (especially in winter) and open the cleaning month or the entrance is cleaned

 

 

 

 

 

 

Mud gas separator is a special equipment of gas cut drilling fluid, it belongs to the ordinary pressure, it is the degassing theory of ordinary pressure, but it is the primary degassing equipment of disposed the gas cutting drilling fluid, the main distinguish with vacuum degasser is; it can remove the big bubbles which the diameter is bigger than 3mm. The big bubbles are refers to the swelling gas of the most drilling fluid is full of the well, their diameter are about 3-25mm.  This big bubbles can cause well kick, even erupt the surface of turntable. The gas liquid separator is mainly depend on the effect of gravity collision to realize the liquid and gas separate, the vacuum degasser use the principle of vacuum, flocculated flow and centrifuge, the quality of processing gas of vacuum degasser is less than the liquid gas separator, but it remove the gas more thoroughly. Usually the gas is processed by the liquid gas separator also have small bubbles, after through the shale shaker, it needs enter into the vacuum degasser to conventional gas.

        

The types of liquid gas separator

1 Cover type

The bottom of vacuum degasser is closed, drilling fluid through a U type pipes to return the circulation tank. The depth of drilling fluid in the degassing tank, it can control by the depth of the U type pipes.

2 Open bottom type

The separator have not bottom, the lower parts dive into the drilling fluid, the liquid level in the tank depends on the drive depth of bottom to control, this type of separator is called the “poor children” in foreign, it explains the simplification.

ZYQ Mud Gas Separator Parameters

TYPE ZYQ800 ZYQ1000 ZYQ1200
Separator Main Body 800mm 1000mm 1200mm
Thruput 200~260m3/h 240~300m3/h 280~360m3/h
Inlet Pipe 5″ 5″ 5″
Outlet Pipe 8″ 8″ 10″
Exhaust Pipe 8″ 8″ 8″
Weight 1600kg 2100kg 2800kg
Overall Dimension 1900×1900×5700mm 2000×2000×5860mm 2200×2200×6634mm

The most simple and reasonable liquid gas separator is the cover types. The open bottom types is take second place, because the depth of drilling fluid is limited to the liquid level depth in circulation tank. The working pressure of liquid gas separator is equal to the frictional drag of when the free gas discharge tubes discharge.