Tag Archives: Oilfield Vacuum Degasser

ZCQ vacuum degasser is a special equipment to deal with gas drilling fluid, which is applied to the mating of the other drilling equipment to eliminate the harmful gas of the fluid, to recover the specific gravity and stabilize the viscosity of the fluid.  ZCQ series Vacuum Degasser is a special-purpose device and a new type one for the treatment of gas in the drilling fluids. Also, at the same time vacuum degasser can be used as a heavy-power agitator and supported applicable to all types of mud circulation purification system.

degasser

The ZCQ vacuum degasser has performed reliably on hundreds of thousands of wells and has earned its reputation as the standard of the industry, Vacuum degasser is one important part but not a phase of solids control, it is used to separate the gas and drilling fluids for safe and environment friendly. It is always installed after the shale shaker, and before the desander and desilter

Features & Benefits
•Skid-Mounted – Simplifies spotting and installation.
•Self-Contained – The unit consists of a cylindrical vacuum tank with internal baffle system, vacuum pump, jet nozzle and three-way float valve.
•Three-Way Float Valve – Unique design allows venting to the flare line during hydrogen sulfide service.
•High Performance – The D-GASSER can handle up to 1,000 gpm while restoring mud to its original density.
•Robust – The unit is ruggedly built and is coated inside and out with a corrosion-resistant epoxy to ensure long life and minimum maintenance.

DC solid control is a professional manufacturer of solid control system/equipment in china. We will provide our clients high quality products with most reasonable price, at the same time we also sincerely offer the high level after sales service for any home or abroad clients. You are welcomed to consult or visit us any time.

Vacuum Degasser are used to remove the small entrained gas bubbles left in the mud by the mud/gas separator. These units are positioned downstream from mud/gas separators, shale shakers and mud cleaners, while hydrocyclones and centrifuges follow in the arrangement.

DC Solid control has one set of ZCQ240 Vacuum degasser for sales. The main diameter of the vacuum degasser 240mm; Treating Capacity is ≤240 m3/h; Motor Power is 15kw;Vacuum Power is 2.2kw.

vacuum degasser

Features of the ZCQ240 Vacuum Degasser
1 The vacuum tank use up and down the two rotating impeller, make the liquid is fully rabble, gas is more easy to overflow.
2 Mud is spurting is throw to the wall of the tank and the foam separator, the degassing effect is good.
3 In the process of water ring vacuum degasser, it keeps isothermal state all the way, it adapts to the pumping of flammable gas and explosive, the safety is reliable.
4 The equipment can direct use, needn’t install centrifugal pump, big motor, associate lines, matching voltage cubicle and easy to install.
5 Using is convenience and easy to operate.

DCZCQ Series Vacuum Degassers are able to service the needs of any application .It is usually installed after the shakers. Each degasser effectively and efficiently removes gases from gas-cutmud, thus ensuring that the proper mud weight is pumped down hole. In doing so, the degassers are able to aid in the prevention of potential blowouts. Unlike the traditional vacuum degasser, DCZCQ vacuum degasser is a self-contained unit,  DC Vacuum Degasser is monitored by level sensor to protect over suction of the fluids.

Vacuum Degasser are used to remove the small entrained gas bubbles left in the mud by the mud/gas separator. These units are positioned downstream from mud/gas separators, shale shakers and mud cleaners, while hydrocyclones and centrifuges follow in the arrangement.

This  vacuum degasser is equipped with water-ring vacuum pump and constant temperature working status. It is suitable to suck flammable and combustible gas, with safe and reliable performance.

degassing equipment

The structure of gas-water separator is reasonably designed to assure of effective separation of gas and water and free-flowing of vent pipe. These units are positioned downstream from mud/gas separators, gumbo removal equipments (if utilized), shale shakers and mud conditioners (if utilized), while hydrocyclone desander and Decanting centrifuges follow in the arrangement.

vacuum degasser

China manufacturer DC Solids Control offer the world with Mud/gas separators & vacuum degasser.We are an exporter of Mud/gas separators,vacuum degasser for Indian, Russian,middle east.etc.Oilfield Company of the United States and Century Int’l Oilfield Equipment LLC of the United Arab Emirates etc.

DC 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.

vacuum degasser

Now DC Solid control company has 10 sets ZCQ240 and ZCQ270 vacuum degasser in stock to meet your urgently requirements. Vacuum degasser is one important part but not a phase of solids control, it is used to separate the gas and drilling fluids for safe and enviorment friendly. It is always installed after the shale shaker, and before the desander and desilter (or mud cleaner).

DC Vacuum degasser produced by DC Machinery is suitable for various supporting of drilling mud solids control system, it plays an important role in restoring drilling mud performance, and can also be an agitator with big power.

ZCQ Vacuum degasser also can act as a big agitator for the drilling mud, which helps the treatment for desander and desilter. Please contact me to get more infor about the vacuum degasser.

Vacuum Degasser are used to remove the small entrained gas bubbles left in the mud by the mud/gas separator. These units are positioned downstream from mud/gas separators, shale shakers and mud cleaners, while hydrocyclones and centrifuges follow in the arrangement.

Working principle of vacuum degasser

The degassers are used to clean the gas in the drilling fluid, to ensure the drilling fluid property relatively stable, to guarantee the steady operation of swirlers. The degassers can be grouped into two kinds: ordinary pressure type and vacuum type. The ordinary pressure degasser is to use the centrifugal to take out gas to invade the mud, with the help of centrifugal force to make the mud spraying in the jet tanks and striking on the wall to make gas releasing. The vacuum degasser is to use the suction of the centrifugal, forming negative pressure in the vacuum tanks, under the action of drilling fluid at atmospheric pressure, through the suction pipe into the hollow shaft, then by umbrella piece of around the hollow shaft assembly, they jet to the skin of tank.

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Structure of vacuum degasser

ZCQ vertical type vacuum degasser made of explosion proof motor, vacuum pump, coaxial shunting gear reducer. When works, pressuring the start key, motor drive vacuum pump and mud gas separator degassing impeller rotate, gas cut invaded drilling fluid absorbed to mud gas separator and throw to mud gas separator by degassing impeller. Production a fluid lamina which is eddy spiral movement and form the centrifugal force field. Because the centrifugal force is the 32 times of its gravity, make the small bubbles in fluid lamina rapidly buoyancy lift to surface, in the function of negative pressure, the small bubbles rapidly broken, the broken bubbles gas enter into vacuum pump and discharged through the two air holes in reducer.

DC Solid Control is a total solids solutions provider. We offer industry leading solids control equipment including shale shakers, degassers, mud cleaners, deserter, desander and centrifuge. They are a complete circulating of mud systems.

Vacuum degasser is the second stage solid control equipment, which is used when drill above 3000m well, so it is very important for drilling. And how to install it and what hidden dangers it has, please continue to look down.

Common hidden dangers in installing a vacuum degasser;

(1). The degasser is not connected with a flare line pipe, or the pipe is not at least 15m from the mud tank area.

(2). The relief pipe of the degasser shrinks in diameter ot is bent, so that the gas is not delivered smoothly.

(3). The relief pipe of the degasser is upright, releasing gas above the mud tank area.

vacuum degasser

1. Hazard:
The degasser is not installed with a relief pipe, pr the pipe connected outside the tank is less than 15m away. The gas discharged will accumulate in the tank area, casuing danger of explosion.

Remedy:
The relief pipe of the degasser is connected 15m beyond the tank area. The flammable pernicious gases can be ignited at the wellhead if necessary, the 15m relief pipe is connected beyond 15m when the degasser is used.

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2. Harden:
If the relief pipe of the degasser has a reduced diameter or is bent, it decreases the efficiency of removing gases.

Remedy:
The inside diameter of the relief pipe of the degasser should not be less than the open diameter of the outlet, and should open toward the road ahead. If the hose is used, it should not be deformed due to compression; a right angle bent should be used to turn a corner.

3. Hazard:
The relief pipe discharge directly above the tank area. Because the outlet of the pipe is about 3m above the surface of the tank, permicious gases cannot be ignited and set on fire. Inflammable pernicious gases will accumulate around the tank area.

Remedy:
The relief pipe of the degasser is connected 15m beyond the tank area. Inflammable pernicious gases can burn at the outlet when released.

Vacuum degasser is a high-efficiency in-line module that removes dissolved gases from HPlC Solvents. Its unique design assures reliable continuous operation and the highest level of continuous performance available without the need for helium degassing. Up to five solvent lines maybe degassed simultaneously by one unit. This type of equipment is part of the final polishing stage of a water treatment process to produce ultra high purity water.

vacuum degasser1

How to works of vacuum degasser

Vacuum degasser work by creating lower pressure inside a vessel so air or other gaseous impurities can be removed from a substance, such as water or even molten steel. The air is siphoned from the vessel after pressure is lowered enough to force the gas from the substance. A high-vacuum process environment is maintained for a variety of product testing and laboratory application.

Vacuumdegasser

Features of vacuum degasser

1.Negative pressure degasser can efficiently separate gas and liquid, filter out impurities and ensure smooth exhaust;
2.During the working process of water ring vacuum pump, it always stays in isothermal condition, which is suitable for the suction of flammable and explosive gas and the performance is safe and reliable;
3.Drilling mud hit the wall through the window of a rotor at a high speed, bubbles in the mud broken thoroughly, the degassing efficiency is high and more than 95%.
4.The application of gas water separator will not make the water and gas discharged simultaneously and the discharge pipe is always clear.

Vacuum degasser are positioned downstream from mud/gas separators, gumbo removal equipments (if utilized), shale shakers and mud conditioners (if utilized), while hydrocyclone desander and Decanting centrifuges follow in the arrangement.

Working principle of DC 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.

vacuum degasser

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.

Difference on vacuum degasser and poor boy degasser fluid processing

Vacuum degasser usually used to separate less gas than poor boy degasser. Although they both are degassing devices. Poor boy degasser is set up before shale shaker in the oil and gas well drilling. Before fluid flowing to shale shaker it need to be processed by poor boy degasser for safety working condition. Especially when the well depth is more than 4KM.

NOV(National Oilwell Varco)Nov Brandt Solids Control Division Is very famous brand around the world.

Vacuum degassers mechanically remove entrained gases such as hydrogen sulfide, carbon dioxide and natural gas from the mud system. Entrained gas can reduce the hydrostatic head of the mud column and can cause catastrophic well control problems.

vacuum degasser2

BRANDT™ manufactures negative pressure (vacuum) and atmospheric degassers. Vacuum degassers utilize negative pressure to withdraw entrained gases from the mud. In order for this to work, mud is pumped through a venturi, which develops a negative pressure, thus sucking mud into the unit. The mud then flows over dispersion plates, arranged either horizontally or vertically, creating thin sheets of gas-cut mud.

But now there are many Chinese manufactures can produce the vacuum degasser same like Brandt. DC Solids Control Is a China based Solids Control equipments manufacturer, we also offer worldwide vacuum degasser and services.

vacuum degasser

Our vacuum degasser is constructed by main vessel, gas water separator, vacuum pump, motor, and eletric control cabinet. The vacuum degasser could be used in many field, like commercial uses, agricultural uses and oilfield uses. Hereunder we talk about the oilfield uses.In oilfield drilling fluid system, there are 2 types degasser. One is poor boy degasser separate large quantity invaded gas, the other is the vacuum degasser, we also call it gas buster.

Vacuum degassing is the process of removing dissolved gas from a liquid solution by lowering the pressure inside a vessel containing the solution. The reduced pressure inside the vessel causes the gas to become less soluble and separate from the liquefied material. After the vacuum degassing process is complete, the gas is removed from the vessel, and the pressure is returned to normal. This process is typically performed in a specially designed chamber known as a vacuum degasser. Vacuum degassing is often utilized in water treatment, laboratory testing, and soil purification procedures.

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Operational Theory:

Vacuum degasser utilize negative pressure by vacuum pump to withdraw entrained gases from the mud. In order for this to work, mud is pumped through a venturi, which develops a negative pressure in the vessel by vacuum pump, thus sucking mud into the unit. The choice between horizontally- or vertically-mounted units is typically based on the footprint requirements of the specific rig.

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Commercial uses
Vacuum degassers are used in some water treatment operations to significantly reduce the total gas pressure in water containment vessels. The vacuum is created by using either a blower or pump, and the degasser containment vessel is constructed from several materials, including steel, fiberglass and aluminum. Some containment vessels are built from concrete reinforced with metal fittings. Aqua vacuum degasser are often used to remove sulfur gases that can build up in water.