Mud Solids Control Equipment

Among ME countries, Iran market is a good market for oil drilling. Many equipment suppliers and drilling contractors have been working hard on the market for many years. Up to now, in the field of solid control equipment and service, the fact is that some U.S. brands control the most part of the market. And it is not easy for China brand to come, even with high quality and inexpensive equipment. We may talk about decanter centrifuge as one aspect. In Iran, the most popular model of decanter centrifuge is Swaco CD518HV and GNLW363VFD. They are both high speed centrifuge model.

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Why we should have drill slurry storaged? Mainly it is because of the reasons below:

(1)   Requirement for the carriage and storage of mud on mobile drilling units has increased over the years, it is not convenient to process the drilling mud at the platform, you have to collect the used drill slurry and carry it to drilling fluids plant for process, then recycle the clean drill slurry and disposal the useless cuttings, so that it will not influence the environment.

(2)   Clean drill slurry should be storaged for use, for drilling , for mixing , for lubricate the drill bit.

(3)   Useless drill cuttings should be collected and storage, then carried to drilling waste management system for process.

GN solids control manufacture drill slurry storage tank for various application, with necessary mud agitators, mud gun, centrifugal pump and mixing hopper. We can produce mud storage tank together with solids control system or separately. Compared with shaker tank and intermediate tank, the pipeline of storage tank is much simple, if required by the clients, we will divide it into several compartment by clapboard. Sometimes mud ditch is installed on each compartment. Handrails, stairs, cleaning gate, valves are included, but walkways are not included. There is flexible hose connected 2 tanks.

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See the photo on the right, it is a mud circulation system with mud gas separator, in oil drilling solids control system, the 1^st phase cleaning equipments of mud circulation system is shale shaker, which is fed the mud from high pressure manifold, the mud gas separator is fed mud from the chock manifold. When much of harmful gas is found during drilling, they close the valve to stop feeding the shale shaker, and open the valve to feed to mud gas separator, and use hundreds of exhaust pipe to transfer the harmful gas from mud gas separator to a place far from well head, and use flare ignition device to burn it. Mud gas separator is not a part of solids control system, GN can manufacture both of them, so we put them together for your convenience.

Mud circulation system is also called mud cleaning system, mud recycling system, solids control system, Usually if a mud circulation system with mud gas separator, it is usually oil & gas drilling or geothermal, it can not be HDD or water well drilling. Mud gas separator is horizontally installed on the skid with the chock manifold on it together, it is easy for transportation.

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HDD means horizontal directional drilling or Directional boring, is a steerable trenchless method of installing underground pipes, conduits and cables in a shallow arc along a prescribed bore path by using a surface-launched drilling rig, with minimal impact on the surrounding area.

Drilling fluids have several important functions. They cool and lubricate the drill bit, stem and other down hole tools. The fluid also assists in sealing the sides of the bore, therefore stabilizing the borehole. Finally, drilling fluids are designed to carry the cuttings out of the hole.

The most widely used drilling fluids for HDD applications are bentonite, even if they are not so expensive compared with oilfield drilling fluids, but it is still a pollution for the environment, especially usually they dig a mud pit for HDD and pump the drilling fluids from the mud pit to shale shaker. After the directional boring, how to treat the used drilling mud become a problem.

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Mud agitator is mainly composed of electric motor, gear box and impeller shaft assy, for shaft- connection type mud agitator, it also have coupler. Elastic coupling connect electric motor input shaft and agitator gear box input shaft. Impeller shaft and agitator gear box output shaft are connected by rigid coupling.

GN agitator gear box is worm gear reducer, which is combined with explosion-proof motor, enable stable performance in wild severe environment.

Rotation of the drive motor is transferred to the impeller shaft through the directly coupled gear drive. The drive is a reduction agitator gear box and is factory assembled to the drive motor. The drive is sized to apply the maximum torque required to produce the design impeller rotation speed of 60 rpm under 50hz, and 72 rpm under 60hz.

The mud agitator stirs a mud slurry to maintain suspension of solids. The agitator is mounted on top of the mud tank and has one or two impeller(s) immersed in the mud slurry. The impeller shaft is directly coupled to an electric drive motor that is available in several horsepower ratings from 7.5 to 25.

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Not only for drilling application( oil & gas drilling, HDD, geothermal, CBM, water well drilling), GN equipments can be also used for mining slurry separation, dredging slurry management, piling and tunneling.

GN dredging and dewatering equipments are designed to feed slurry directly from the dredge. GN dredging slurry separation system separates solids from dredging slurry through a three phase system.

In addition, the solids that are removed are dewatered to a stackable “press filter” state, which can be readily moved with front end loader, conveyor and/or dump trucks. The effluent is pumped off by a centrifugal pump.

The separation process is continuous and operates completely mechanically without any chemical enhancement. The dredging slurry separation system is designed as a three phase separation system, 1^st separation is shale shaker, 2^nd separation is desander, 3^rd separation is desilter. Sometimes as the client’s requirement, we only design 2 phase shale shaker and desander. The desander and desilter are made into separate mud cleaner with large screen area.

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GN solids control designed a standard mud system for mine slurry solids separation, which includes GNLW223 decanter centrifuge, GNZS752 shale shaker and a compact size mud tank, which is installed on top of the trailer. The total system capacity is 100L/min for the slurry.

Mineral exploration methods vary at different stages of the process depending on size of the area being explored, as well as the density and type of information sought. The most common drilling for mine is diamond drilling. Exploration diamond drilling is used in the mining industry to probe the contents of known ore deposits and potential sites.

GNLW223 mini decanter centrifuge specs:

Centrifuge Model	GNLW223G
Centrifuge Type	Electric Drive Fixed Speed
Max Capacity	150Liters/Min
Normal Capacity	100Liters/Min
Bowl Diameter	220mm
Bowl Length	660mm
Beach Angle	8
Effluent Ports	6 Adjustable
Max Bowl Speed	4000RPM
Typical Bowl Speed	3800RPM
G-Force (Typical)	1770
Main Drive HP	15HP
Conveyor Type	Axial
Gearbox Ratio	57:1
Back Drive HP	N/A

If you require mine slurry solids separation system, pls contact GN sales.

What is dredging?

Dredging is an excavation activity or operation usually carried out at least partly underwater, in shallow seas or fresh water areas with the purpose of gathering up bottom sediments and disposing of them at a different location. This technique is often used to keep waterways navigable.

What is dredger?

dredgers is a piece of equipment which can dig,transport and dump acertain amount of under water laying soil in a certain time.

In a dredging slurry separation project, dredge equipments include but not limit to dredger( dredge boat), dredge pumps, Flocculants mixing tower , slurry concentration tower, belt press filtration, sedimentation tank, dredging slurry separation system(DSS), etc. 

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The mud cleaning system produced by GN solids control is widely used for horizontal directional drilling , water welling drilling ,coal bed methane, geothermal hole and mining diamond core drilling , it is used to separate the drill cuttings from the mud, so that the clean mud can be re-circulated to continue the drilling process.

As the Geothermal drilling usually close or inside the downtown, this requires the mud system to be compact with less footprint and user friendly with less noisy. Also Geothermal well drilling sometimes require high capacity performance for deep wells. Below is the jobsite photo of mud cleaning system for geothermal drilling, which is produced and commissioning by GN solids control.              

                   

Like water well drilling, mud rotary drilling is also the desired method for installing geothermal loops. As the bit penetrates the soil, it creates smaller fragmented pieces that are called drill cuttings. The mud carries these cuttings to surface to create an open hole from the top down to the bottom. The drill cuttings are collected into a mud pan or settling pit on surface and then the mud is re-circulated to continue the drilling process.

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GN solids control design and manufacture linear motion shale shaker, and we produce shale shaker screens by our own factory. GN shaker screen factory Is located in the largest wire mesh center of Asia, we also supply replacement shale shaker screen for Swaco Mongoose( both in steel frame material and composite material) and Derrick FLC500 shale shaker, FLC2000 shale shaker.

By shaker screen frame, the screens type we can produce as

Hookstrip shale shaker screen, steel frame screen, composite material screen

By API mesh, we can produce from API40 to API 325. For special API mesh, pls confirm with GN. Our shale shaker screen is produced according to API RP13C.

By shale shaker brand & model, we can produce replacement shale shaker screens for

Derrick FLC500,FLC2000, Brandt Cobra, MI-SWACO Mongoose PT,BEM600, GN solids control, Kemtron, Fluids system, etc

By screen mesh layer, we usually supply shaker screens with 2 layers or 3 layers.

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