Decanter Centrifuge is important both for solid control system and waste management system. A variable frequency drive centrifuge can offer different speed for different use. Lower speed is better for barite recovery during solid control; higher speed can be OK to separate cuttings during waste management operation.

Under current situations, well-known centrifuge brands are MI-Swaco, Derrick Equipment, Nov Brandt and a new star from China- GN Solids. The China brand GN reach the step of US brand with its core technology, excellent management and reliable after-sales service. Let’s compare one of US brand below with GN decanter centrifuge.

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Drilling fluid is expensive in the oil drilling operation. The cost is even higher than solid control equipment. If you use solid control system to recycle valuable drilling chemicals, it will save a lot of money. Decanter centrifuge is designed for barite recovery and dewatering in global drilling projects where the best efficient fluids/solids separation is required. Hereunder, we introduce world popular US brand Derrick DE-1000 FHV and China brand GNLW363VFD.

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This chapter continues with last one, as the second part working description of separation plant for tunneling project. For the first chapter, you can view: http://oilfield.gnsolidscontrol.com/separation-plant-for-tunneling-project/

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Historically, Separation plants have been the bottleneck in many tunneling projects, resulting in lost time and money to the contractor. Before the start of the project, It is very important to plan ahead to have the properly sized and correct equipment in working place. Note: poor planning results in poor performance and money lost.

GN Solids can offer customized mud system matching with your TBM. Drilling mud treating capacity is from 200gpm to 1000gpm respectively. Please contact GN Solids to get proper solution for your tunneling project.

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For world well known directional drill rig, there are Ditch Witch, American Augers, Vermeer. The three brands occupy most part of international market. For small drill, no need mud system. But for drill rig above 150gpm, a small mud recycling system can help you work more efficiency and environment friendly. For small mud system, GN Solids have 150gpm, 200gpm,250gpm, 300gpm for option. They can also customize as per the customer request.

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Coalbed methane (CBM) reserves are a relatively untapped energy source with huge potential. It has become an important source of energy in all over the world, like Canada, United States, Australia, China, etc. The exploration of CBM is similar to geothermal well drilling. They mainly need rig, mud system, mud pump, and some other accessory equipment.

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Decanter centrifuge is core equipment both for solid control system and waste management system. With constant improvement of the requirements from customers, many customers attach more importance on the bowl diameter and treating capacity. In China up to now, only GN can manufacture big bowl , big volume decanter centrifuge, with bowl diameter 22inch and treating capacity Max.500GPM.

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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.

Drill Slurry Storage

(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 with mud gas separator

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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