Category Archives: Mud Gas Separator

To be as a good reputation China supplier. DC Solid control provides 3 models mud gas separator for discount sales. they are DCZZYQ800, DCZYQ1000 and ZYQ1200. Mud-Gas Separator is a piece of special equipment for degassing gas-invaded mud in the first grade.

mud gas separators

Mud gas separator is mainly used to remove big bubbles above φ3mm in diameter and these bubbles refer to expanded gases in the fluids that fill in some parts of well annulus. Well kick even spilling out to the rotary table will easily occur if they are not removed.

Mud-Gas Separator Features & Benefits:
1. Separates and discharges the enormous free gas from drilling fluids, including poisonous gases like H2S.
2. Separated gas is carried by discharge lines to safe area for combustion.
3. The unit is ruggedly built and coated with anti-corrosion epoxy so as to ensure long service life when processing hazardous and toxic gases.

Contact me if you want to know more detailed information about the mud gas separators .

The mud/gas separator is designed to provide effective separation of the mud and gas circulated from the well by venting the gas and returning the mud to the mud pits. Mud gas separators in other countries also called Poor boy degasser,Liquid-gas separators, Mud/Gas Separators, etc. Mud gas separator located at downstream of the choke manifold is one of the important well control equipment that you need to focus.

mud gas separator


High efficiency and easy to maintain
Large capacity
Easy transportation and installation.
Maximizes free gas/mud separation
Unique U-shaped tube design eliminates moving parts and ensures a positive fluid seal, maintaining safe mud levels
Efficient baffle arrangement to easily separate gas from fluid
Available in varying sizes and lengths, accommodating any volume of fluid with high concentrations of gas
Heavy-duty steel construction and adjustable mounting skid for any rig

ZYQ series Mud gas Separator combined with the Electric Ignition Device can be used to ensure the drilling process smooth. It is devided into the normal pressure Mud gas separator and pressure auto-control Mud gas separator, according to the pressure.Mud gas Separator is your best choice to prevent drilling mud invasion.

Buy Solids control Mud gas separator for solids control system,drilling fluids,well drilling solids control Mud gas separator from China manufacturer.

Mud gas separator is also called poorboy degasser which designed primarily for the removal of entrained gas, from the drilling fluid. The mud gas separator is designed in multiple capacities, to meet specific mud gas needs.

mud gas separator

The Mud/Gas Separator allows operators to circulate the drilling fluid by removing large pockets of gas. The gas cut mud enters the unit, where it hits a series of baffle plates. These baffle plates provide surface area for the dispersion of the gas cut mud.

The mud is routed to solids control equipment for further processing while the separated gas travels to the flare line at the top of the unit to be vented at a safe distance from the rig and rig personnel.

DC solid control uses high quality steel materials manufacturing normal pressure prevent H2S Mud Gas Separator,can effectively prevent the harmful gas erosion, ensure the man- machine safety production.

DCZCQ mud gas separator is designed primarily for the removal of entrained gas, from the drilling fluid. The DCZCQ mud gas separator is designed in multiple capacities, to meet specific mud gas needs.

DC Solid control manufactured a common model mud gas separator for a India repeat clients who are focus on deep well drilling contractor.


DCZCQ800 Mud-Gas Separator is 800mm in diameter and 6000mm tall, can handle atmospheric operation of200~260m3/h. Its efficient baffling system optimizes mud/gas separation, enabling operators to drill deeper, larger diameter wells and exploratory wells at higher circulating rates while handling greater volumes of gas. It minimizes gas cut mud at the flowline and from an environmental standpoint, it minimizes mist carry-over.

DC Solid control also provides many models mud gas separators, such as DCZCQ600, DCZCQ1000 and DCZCQ1200. So if you have interest please contact me freely.

The mud/gas separator is designed to provide effective separation of the mud and gas circulated from the well by venting the gas and returning the mud to the mud pits. Small amounts of entrained gas can then be handled by a vacuum-type degasser located in the mud pits. The mud/gas separator controls gas cutting during kick situations, during drilling with significant drilled gas in the mud returns, or when trip gas is circulated up.


Three types of mud/gas separators commonly are used today: closed bottom, open bottom, and float type. The principle of mud/gas separation within each type of vessel is identical. Differences can be found in the method of maintaining the mud leg.

Commonly called the poor boy, the open-bottom mud/gas separator is typically mounted on a mud tank or trip tank with the bottom of the separator body submerged in the mud. The fluid level (mud leg) in the separator is controlled by adjusting the fluid level in the mud tank or by moving the separator up or down within the tank. Mud-tank height can restrict the maximum mud leg obtainable for open-bottom mud/gas separators.

DC use high quality steel materials manufacturing normal pressure prevent H2S Mud Gas Separator,can effectively prevent the harmful gas erosion, ensure the man- machine safety production. We provide 4 models of open-bottom mud/gas separator, such as DCZYQ600, DCZYQ800, DCZYQ1000 and DCZYQ1200. Please contact us if you have interest with it.

The height and diameter of a poorboy degasser separator are critical dimensions which affect the volume of gas and fluid the separator can efficiently handle.

As the mud and gas mixture enters the separator, the operating pressure is atmospheric plus pressure due to friction in the gas vent line. The vertical distance for the inlet to the static fluid level allows time for additional gas break-out and provides an allowance for the fluid to rise somewhat during the operation to overcome friction loss in the mud outlet lines.

mud gas  separator

Care should be taken to ensure minimum back pressure in the vent line,. On most offshore rigs, the vent line is extended straight up and supported to a derrick leg. The ideal line would be restricted to 30 ft in length and top of the line should be bent outward about 30 degrees to direct gas flow away from the rig floor. If it is intended that the gas should be flared, flame arresters should be installed at the discharge end of the vent line.

As stated previously, when the gas pressure in the separator exceeds the hydrostatic head of the mud in the U-tube, the fluid seal in the bottom is lost and gas starts flowing into the mud system. The mud outlet downstream of the U-tube should be designed to maintain a minimum vessel fluid level of approximately 3 1/2 ft in a 16 ft high separator.

Assuming a 9.8 ppg mud and total U-tube height of 10 ft the fluid seal would have a hydrostatic pressure equal to 5.096 psi. This points out the importance for providing a large diameter gas vent line with the fewest possible turns to minimise line frictional losses.

DC mud gas separators are designed to provide safe drilling procedures during horizontal, underbalanced, h2s, or high pressure drilling. Our gas buster captures and separates the mud/gas then safely vents free gas to the flare line to be burned off while returning mud to the mud pits.

Our Mud gas separators are intended to sustain safety for high pressure wells or when sour gas may be present. Our units are closed bottom skid mounted model designed around safety and precision. Uniquely designed baffles break up mud and gas which is then expelled by the gas vent line to the flare line.


DC Solid control manufacture numerous size specifications including ZYQ800, ZYQ1000 and are capable of producing vessels of all sizes. DC Gas Busters have a 12” inlet from flow line, 12” gas vent line to flow line, 12” return line, and 20” manhole. If necessary these lines can be modified with flanged concentric reducers to your desired piping size. The run of the gas vent line continues to ground level for safe and efficient hook up to the flare line piping.

DC’s Mud Gas Separator has a lot of advantages including reliable safety, better treatment effect, long service life, etc. DC use high quality steel materials manufacturing normal pressure prevent H2S Mud Gas Separator,can effectively prevent the harmful gas erosion, ensure the man- machine safety production.

The mud gas separators should be able to handle a high proportion of mud solids and may experience hydrate plugging as a result of gas expansion through the choke. Designs based on conventional process practice, involving a float controlled liquid dump valve and a control valve to regulate gas pressure are not suitable because of the accentuated risk of malfunction due to plugging and the consequent need to provide a relief valve which itself may plug. Mud gas separator designs should therefore be based only on a liquid seal system matched to an adequate gas vent.

Liquid Throughputs

The volumetric flow capacity of the system should be based on an adequate gravitational rate from the mud gas separator. A typical liquid capacity of 6 barrels per minute of 12 pounds per gallons drilling fluid of average viscosity is a guide for vertical mud gas separator.


Liquid seal design

The liquid seal ensures that separated gas vents safely without breaking through to the mud tanks. The seal may be in the form of an external U-tube or may be based on a dip tube extending into a tank, usually the trip tank. The liquid seal hydrostatic pressure must be monitored against the back pressure of the gas vent line in the mud gas separator. It may be integrated as part of an instrumentation control system for the whole system.

Anti-Siphon Line

If the liquid seal is based on a U-tube design, an independent vent pipe, preferably 6 inches nominal diameter or larger, should be fitted at the highest point of the pipe work to avoid siphon effects and as a back-up to dispose of gas carried through the U tube liquid seal. The secondary vent need not extend to the top of the derrick. It should never be tied onto the primary vent.

Relief lines

All surface gas handling systems should have a means of diverting the flow from the choke and kill manifold through overboard relief lines and isolating the mud gas separator. In a blow-out situation, this may be the last resort to allow evacuation of personnel from the drilling rig. The pressure rating of the piping and valves on overboard lines should not be less than the pressure rating of the buffer

Drilling fluid gas-liquid separator is the first stage professional equipment to treat the gas invade mud. It is mainly used to remove the big bubbles with the diameter of about ≥Φ3mm.Most of these bubbles are the expanded gas filled in the drilling fluid in annular of wellbore. It would cause well kick if mot to remove it timely.

Operation principle

Drilling fluid with gas invades goes into the separator at the import tangentially and drops to a series baffles along the inner wall. After collision to increasing the contact area, It flows downward and become to a turbulent state which makes gas separate from mud and the free gas passes through the top of tank and discharged from the gas export. The length of gas export pipe can be determined at site and be induced to the safe place. The drilling fluid without gas will flow into the circular tank.

mud gas separator

How to Installation

1. Generally, the separator is installed on the surface next to the 1# tank. The surface should be flat and stable.
The main body is lifted vertically to the surface by crane at the auriculars on the top of main body and then put down slowly. Three places on the top of the main body are pulled tightly by the steel string to assure the main body to be vertical to the surface.
2. After installation, Exhaust line the 2# channel 60-80mm distance of the mouth of a well.(The line is oneself, if needed to manufacturer provide, explain away to the speak for).Connecting the 3# import to the rotary prevention or throttle conduit and close the 4#waste export, open the 7#mud export and connect to 1# mud tank by the pipe.
3. When in moving, disassemble the pipe and loose the tightened string. Lift the top of the main body to make the auricular plane by crane. The ladder can be used as bracket in this situation.


Discharge the mud in the separator totally when in spare time and other are not needed.

Mud gas separator separates the gas which is from throttle manifold and process the gas cut drilling fluid, removing the gas, natural gas, hydrogen sulfide, co, co2 which are mix in drilling fluid, and recovery the degassing drilling fluid, then it is further processed by vacuum degasser, it is send back to drilling fluid circulating tank.

After occur overflow and close the well and complete well control calculate scheme, the throttle pipe is soaked mud have already connected well, mud gas separator has already connected well.

1. When using the mud gas separator in installed cleaning value and U pipeline discharge value must be closed.

2. Checking the discharge pipeline safety fixed rope or chain.

3. Open the throttle pipe value which is leading to mud gas separator.


After start the well control process, the mud returned from hohlraum through the throttle pipeline enter into drilling fluid mud gas separator. The separated gas by mud gas separator is discharged and the mud is discharged from separator is directly return to shale shaker.

1. During the working, continuous monitoring mud gas separator and detection the returned shale shake tank mud.

2. After well control successful, open the bop and closed the throttle pipe value which is connecting mud gas separator.

3. Opening the mud gas separator cleaning value and all rock debris are discharged to pollution pool.

4. If use the U pipe separator, open the U pipe discharging value and clean it with water. The all solid are discharged to pollution pool.

5. Cleaning, washing and checking all manifold, pipe line and value and according the requirement of soft shut well and hard shut well of drilling design rearrange the throttle pipe and the working condition of mud gas separator.