Non-weighted Drilling Fluid Solid Control System Processes

Non-weighted drilling fluid solids control system processes: custody transfer fluid from the well to the water-sealed cyclonic separation apparatus. By a water-sealed cyclonic separation apparatus for solid-liquid separation. After the separation of cleaning fluid directly into the treatment tank, to avoid wasting fluid and barite, separating the solid phase after separation by shale shaker.

The shale shaker liquid through centrifugal pump (sand pump) into the cleaner (small seal swirl separator + superfine shaker), separated by mud cleaner cleaning fluid and barite into the treatment tank or directly into the mixing tank barite. Weighted drilling fluid solids control equipment (Mixing device) only seal swirl cyclone, shaker centrifugal pump, mud tank, cleaners and handle each one.

Unweighted muds and weighted drilling fluid solids control equipment processes can be connected together by means of two valves.

Close the valve one, open the valve two non-weighted drilling fluid solid control system. Improved solids control system main advantages are: the number of devices greatly reduced, directly reduce the investment in equipment: shale shaker, sand pump drilling fluid and mud cleaners were working intermittently, and the non-weighted drilling fluid treatment can be exchanged with coarse mesh shaker, improving the reliability of the system, life extension. The solid control system is the key equipment of water-sealed cyclonic separation apparatus (mud cleaner), which directly affects the whole mud solids control system purification effect.

Open drilling fluid processing systems: open conventional drilling rig that is when the blowout preventer in an open state, no pressure wellhead. At this time also make use of the drilling fluid handling systems. But requires two additional drilling slot outlet devices: one solid rock saltpetre grinder; two is a drilling sand pump, its function is to crush rock by rock crusher nitrate nitrate after drilling sand pump water seal swirl separator.

KOSUN Machinery Co., Ltd. Located in Jingwei Industrial Park of Xian City and specializing in R&D, manufacture, sales, serivce, logistics and distribution of modern solids control equipment and systems. KOSUN focus on producing oil drilling mud solid control equipment, mud purification systems.

Kosungroup: Status of Foreign Drilling Fluid Solids Control Eq...

Kosungroup: Status of Foreign Drilling Fluid Solids Control Eq...: It is well-known that solids control equipment is one of the most important systems in the petroleum drilling engineering. For the past few...

Status of Foreign Drilling Fluid Solids Control Equipment

It is well-known that solids control equipment is one of the most important systems in the petroleum drilling engineering. For the past few years, the solids control equipment taken place a great changes, and the changes speeded up the drilling industry development process. Then the KOSUN as the pioneer in this industry will share the latest information industry development about domestic and abroad.

Desander

1. Component of drilling fluid solids control equipment

The performance and quality of drilling fluid solids control equipment are the key to the solid phase control technology. Drilling fluid solids control system mainly consists of three parts, drilling fluid circulating tank, drilling fluid purification equipment and electrical control equipment. The drilling fluid purification equipment mainly consists of shaker, desander, desilter, degasser, centrifugal machines, sand pump, blender and mixer, etc. In environmentally sensitive areas, you can also configure the cuttings recovery and waste treatment plant.

2. Status of foreign drilling fluid solids control equipment

Foreign solids control equipment is good, stable, and long-life, and the type of equipment has achieved standardization, serialization and specialization. The level of foreign solids control equipment is represented by the US BRANDT, SWACO, DERRICK，KOSUN and other companies. Their quality and performance of products are the first in the world. Foreign countries pay high attention to solid control system equipment configuration and the efficiency optimization of the entire solid control system evaluation. It is why drilling fluid solids control expert system has been developed.

3. Development of drilling solids control equipments

Currently, the focus on the development of solid control equipments is high efficiency, small footprint and long life equipment such as desander, desilter, degasser. And they are integrated with high-speed centrifuge, so the automatic detection and control of the implementation of the detection result can be applied in solid control system.

KOSUN is a professional oilfield drilling fluids vacuum degasser manufacturer and supplier in China oil drilling mud solids control industry. And we are capable of providing customers with series products, such as oil & gas drilling fluid solids control equipment, drilling decanter centrifuge, drilling waste management equipment and drilling security equipment.

The Structure of Drilling Shale Shaker in KOSUN

The components of drilling shale shaker are mainly consists by six parts:

1.Screen

It was designed to remove the solid phase, is an important component for the drilling fluid recovering, the particle size of the solid phase for shaking depends on the size of screen mesh.

2.Buffer Tank

After drilling fluid flow back to ground from well bottom, it will flow into buffer tank of shale shakers, in which the flow rate will be reduced, and make the drilling fluid flowing through screen evenly and slowly.

3.Vibration Generator 

Vibration generator is a power source for generating a periodic excitation force, to create a continuous, periodic oscillations.

4.Screen Box (vibration frame)

For tensioning screen, support the vibration generator, and to pass the continuous vibration from the vibration generator to screen, so as to achieve the purpose of screening.

5.Base Supporting 

Base supporting is to support the above components, easy to install and transport. Shale shaker power transmission line from the power to the motor output shaft excitation (collectively exciter). This rotating eccentric mass and generate a periodically varying centrifugal force, supported by the damping force on the spring produce sustained vibration sieve box, forcing the surface drilling fluid vibrating shale shaker screen, smaller than the mesh solid particles and liquid back to the drilling fluid through the screen apertures, the solid particles didn’t throught the screen will be discharged to the discharge end, so as to achieve the purpose of solid-liquid separation.

6.Damping Spring

Used for supporting the buffer box and vibration generator, to ensure a sufficient vibration space of the screen box, to achieve the required secondary screen box vibration, and buffered and passed to the base and reducing the dynamic load fluid tank.

KOSUN is a professional drilling mud cleaner supplier and manufacturer in China oil and gas drilling fluid solids control industry.As the pioneer in solids control industry,KOSUN is capable of providing customers with series products ,such as oil & gas drilling fluid solids control equipment, decanter centrifuge, drilling waste management equipment and drilling security equipment.

KOSUN Analysed Oilfield Drilling Industry Present Situation And the Development

1. Development of drilling solids control equipments

Currently, the focus on the development of solid control equipments is high efficiency, small footprint and long life equipment such as desander, desilter, degasser. And they are integrated with high-speed centrifuge, so the automatic detection and control of the implementation of the detection result can be applied in solid control system.

2. Status of foreign drilling fluid solids control equipment

Foreign solids control equipment is good, stable, and long-life, and the type of equipment has achieved standardization, serialization and specialization. The level of foreign solids control equipment is represented by the US BRANDT, SWACO, DERRICK and other companies. Their quality and performance of products are the first in the world. Foreign countries pay high attention to solid control system equipment configuration and the efficiency optimization of the entire solid control system evaluation. It is why drilling fluid solids control expert system has been developed.

3. Component of drilling fluid solids control equipment

The performance and quality of drilling fluid solids control equipment are the key to the solid phase control technology. Drilling fluid solids control system mainly consists of three parts, drilling fluid circulating tank, drilling fluid purification equipment and electrical control equipment. The drilling fluid purification equipment mainly consists of shale shaker, desander, desilter, degasser, centrifugal machines, sand pump, blender and mixer, etc. In environmentally sensitive areas, you can also configure the cuttings recovery and waste treatment plant.

KOSUN Fine-Mesh Shale Shaker Screen Can Adjustable Flexible

Shale shaker is a device which removes the inferior solids from a drilling mud in oilfield drilling procees. The fluid flows across a shale shaker before entering the mud tanks to be treated. Most drilling shale shakers install a vibrating motion to a weir or plastic mesh screen. This motion allows the drilling mud to pass through the screen and remove solid lager than the openings in the screen. The shale shaker is the primary and the first stage drilling solid removal equipment in solid control system and usually combined with other solid control equipment.

Further, when processing the high viscosity fluid, and shale shaker screen (wire mesh) easily sticky drilling fluid, the mesh size becomes smaller, or completely paste, a phenomenon known sieve paste. Since the mesh size decreases, can be isolated more small particles. Sieve Paste and sieve mesh blocking phenomenon since the effective flow area decreases, the shale shaker amount of processing will decrease, easily lead to the loss of drilling fluid.

Beyond that, cuttings and clay paste causing sieve paste and sieve block, the drilling fluid remaining in the sieve dried up, the drilling fluid soluble minerals (such as salt, anhydrite, some carbonate) will precipitate and sticky on the wire, also make smaller mesh, or even blocked. In addition, the drilling fluid oils (eg: threaded oil) in the sieve will be sticky.

Especially in the shaker is stopped working before, the sieve paste and sieve blocking, while the vibration, while water (or jet), not only help clean the screen surface, to maintain smooth mesh, while also removing the drilling fluid paste, but also reduce the screen load.

KOSUN can supply shale shaker, vacuum degasser, mud cleaner, desilter, desander, decanter centrifuge, centrifugal pump, screw pump, mud tank, jet mud mixer, diesel tank, shear pump, mud agitator, mud gun, water tank, etc.

Several Unmissable Points on Desander Maintenance

In oilfield drilling solids control equipment, the desander play a mainly role, it is make as the second stage in the drilling solids control eqipment. So it is necessary to be well maintained all the time.

Here are several points on desander’s daily maintenance:

1. Spare filter element and adequate O-shape sealing ring should be fully prepared.

2. Indicated value displayed on pressure differential gauge should not surpass 3MPa when it is working.

3. Six-hourly examination of wall thickness should be carried out on key parts of desander.

4. The butter from screw thread should be prevented from blocking desander filter element. If blocked, it should be moved from machine and cleaned by high-pressure steam.

5. The moment the filter element is moved from machine, it should be cleaned by water at once to avoid precipitation of sand or support agent at essential points.

6. Only one hydrocyclone is rolling while the other one is saved for later use.

7. No butter should be applied insider its hydrocyclones and seal groove cavity on the top since they are sealed by metal which will be damaged by the potential particle content or fixture from butter.

8. Visual inspection should be conducted into its hydrocyclones.

9. A sudden fall of pressure differential indicates damaged filter element. In this case, one hydrocyclone should be shut and another one started.

10. Filter element should be taken out and examined after one day finishes.

Here are also several unmissed points on drilling fluids desander’s daily maintenance: No butter should be applied insider its hydrocyclones and seal groove cavity on the top since they are sealed by metal which will be damaged by the potential particle content or fixture from butter. Spare filter element and adequate O-shape sealing ring should be fully prepared.

KOSUN is the forerunner of solids control equipment, which is specialized in decanter centrifuge, oilfield shale shaker, desander, desilter, mud cleaner, centrifugal pump, shear pump, submersible slurry pump, mud agitator, jet mud mixer, vacuum degasser and complete solids control system. As the professional advanced decanter centrifuge supplier, KOSUN has won high recognition and praise from domestic and abroad with science core technique and a lot of innovative patents.

Working Principle of Decanter Centrifuge

A centrifuge works on the principle of accelerated settling. By imparting additional G-forces to the content material of a centrifuge, solids (in a solids-laden fluid) will settle much faster. To understand how a decanter centrifuge works after desilter, first look at a simple sedimentation vessel. Solids in this fluids will settle at the bottom from the vessel over a period of time.

One way to speed up the process of settling is to reduce the height from the vessel, so the solids do not have as far to drop. If a specific volume is required, the vessels dimensions can be lengthened or widened. Depending on the rheological properties with the fluids and the size and density in the solids, settling time can still prove quite slow.

Screw pump is a positive displacement pump that uses one or several screws to move fluids or solids along the screw axis. It is an ideal pump for feeding decanter centrifuge. The major benefit to use a positive displacement pump is that it will not break the fine solids to smaller, so the centrifuge can separate the solids easily. Centrifugal force of centrifugal pump will cut the solids to smaller, it is not good for centrifuge's operation.

KOSUN is a professional oilfield drilling decanter centrifuge supplier and manufacturer in China oil and gas drilling mud solids control industry. As the pioneer in this industry, KOSUN is capable of providing customers with series products, such as oil & gas drilling fluid solids control equipment, oilfield drilling decanter centrifuge, drilling waste management equipment and drilling security equipment.

Working Principle of Solids Control Equipment

Most people knows that solids control is important for the oilfeild drilling industry,but less people knows the working principle of solids control equipment. Solids control is a technique that uses combined equipment for drilling rigs to separate the solids in the drilling fluids that are crushed by the drill bits and carried out of the well to the surface.

 The solids control equipment contains five stages,which including mud tanks,shale shakers,vacuum degassers, desanders, desilters and centrifuge. Each of these items play a important role on the drilling rig as a filtration system to extract solids from the mud and return cleaner mud to the active system. It controls mud weight and allows the rig to drill faster and keep the properties of the well-bore hole consistent so that producing formations are protected, it helps prevent blow outs and is environmentally friendly.

Brief introduction of KOSUN Solids Control

1) KOSUN Solids Control is first API Certified Solids Control Company in China. 2) KOSUN Solids Control manufacture base total area is around 135,000 ㎡with advanced processing machines.
3) KOSUN Solids Control products have been used in over 55 countries including many big players in the oilfield.
4) KOSUN keeps developing the state of the art products and owns over 10 patents. 5) KOSUN Solids America team will always be there 7/24 to service you in Houston, Texas, and we are expanding in more areas to set up service point.
6) KOSUN always keep in mind ” Safety” is the first all oilfield jobs, KOSUN Solids Control has passed HSE, ISO14001, and ISO 28001.

As the professional advanced decanter centrifuge supplier,KOSUN has won high recognition and praise from domestic and abroad with science core technique and a lot of innovative patents. KOSUN is widely recognized for developing solutions for downhole problems, from the simple to the complex.

KOSUN has been providing a complete line of solids control equipment for the oilfield Industry and the environmental industry for over 20 years,its featured products includes decanter centrifuge, shale shaker, desander, desilter, drilling fluids cleaner, centrifugal pump, mud gun, shear pump, submersible slurry pump, mud agitator, jet mud mixer, mud gun and complete solids control system.

Improve Solids Control Equipment in Oilfeild Drilling Mud

Solids removal on the rig is accomplished by the following techniques: shale shakers, desander, desilter, drilling centrifuge. Each device is designed to remove a sufficient quantity and size range of solids. Often these are accomplished using separate devices, but sometimes these processes are combined, as in the case of the mud cleaner, which is a bank of hydrocyclones mounted over a vibrating screen.

Another important hybrid device is the cuttings dryer, which is a centrifuge fitted with a cone-shaped shaker. Additional devices can help enhance solids-removal efficiency. For example, a vacuum degasser is sometimes installed (before any centrifugal pumps, typically between the shakers and desanders) to remove entrained air that can security hazard and reduction in mud density.

How to improve solids control equipment?

Improve solids control equipment main aim is to get better property drilling mud. Final function is to decrease or low down the well drilling cost. Drilling mud solids control process request main equipment including shale shaker, desander, desilter, decanter centrifuge. All other equipments in drilling fluid system are assistant ones.

The mud equipments improvement should be based on certain well drilling condition and mud conditions. Such as decanter centrifuge process. Sometimes, we need high speed centrifuge to process finer particles but sometimes we need middle speed ones to process larger quantity drilling mud with larger cuttings.

The solid control equipment improvement including capacity, cost, style, operation convenience, etc. Anyhow, essential target is decrease drilling cost increase all efficiency.

KOSUN leads the industry in engineering drilling fluid systems and additives that improve efficiencies, reduce costs and minimize environment impact in China. KOSUN is widely recognized for developing solutions for downhole problems, from the simple to the complex.

How to Adjust the Hydrocyclone Desander?

Hydrocyclone is the one of the indispensable part of desander for separating solids. Desander is an important drilling solids control equipment, it is used as the second or third stage in the whole drilling fluids purification system. As the important part of the desander, hydrocyclone in different specifications work against different diameters and for different cleannesses. Moreover, separation capacity is closely related with hydrocyclone diameter since larger diameter is aimed at larger particles while smaller one contends with smaller particles.

Then how to adjust the Hydrocyclone Desander?

As the pioneer in this industry KOSUN Machinery Co., Ltd. will share the operating principle for you here!

I. Matters Needing Attention in Adjustment:

1. It is not allowed to decommission the desander out of personal will.

2. It is proper to install the desander behind the untra-deepwater pump.

3. The system may automatically pause periodically or seasonally. Before that happens, certain amount of corrosion inhibitors or excessive high water level protection can be applied to reduce corrosion and protect system.

II. Installation & Maintenance:

1. Desander ought to be installed on a well-prepared, flat foundation or merely on the ground. Then three expansion bolts are adequate to keep the base stable on the foundation built with concrete, which has a round or square surface and is 150mm high.

2. Take notice of the pipelines and flow directions in the installation.

Desander is an important drilling solids control equipment, it is used as the second or third stage in the whole drilling fluids purification system. The most common cone is in 8” or 10”, mainly separating the solids in 47-76 μm from the drilling fluids. According to your treating capacity, you can choose the quantity of cones for desander.

Besides the products KOSUN can provide for oilfield and drilling fluid processing system including drilling fluid shale shaker, drilling fluid mud cleaner, desander, desilter, drilling fluids decanter centrifuge, vacuum degasser, mud tanks, mud gun, mud agitator, drilling mud centrifugal pumps and all the other solids control equipment, complete solids control system, etc.

KOSUN Improvement the Drilling Fluids Solids Control Equipment

The complete of drilling mud solids control equipment continuous enhancement within almost a decade remarkably brings about better drilling techniques, less maintenance on circulating system, faster drilling velocity and lower costs.

Previously, about in 1970s the extremely primitive shale shaker took most work in oil drilling industry, but its separation diameter merely reached 400 μm in the best scenario and solid particles went back to circulating system again. Later on, the situation was progressively improved by the invention of ultra-fine mesh shale shaker, desander, drilling mud cleaner, desilter, drilling fluids decanter centrifuge, vacuum degasser, mud agitator, concocting devices as well as matching mud tanks, electrical control cabinet and so on, with total weight beyond 5 tons, aggregate power consumption close to 300 KW, solid content controlled below 5% and mud’s low density properties available to adjust when needed.

Beyond doubt, the technology significantly improved transformed the oil drilling industry, and elevated drilling crew’s workload of in-situ repairing, keep-up, operation as well as energy consumption.

According this developmental demands indicate it has been a trend to get simpler equipment. In the long run, we need study the practicality of an one-step method, though with awesome challenges but of adventurous nature. However, things usually develop from junior to senior, from simpler to more complex forms, which is the same with solids control equipment whose better efficiency and lower cost are mainly directed at by solids control scientific research. In the short run, we should develop multi-screen system with larger capacity, more stability and better separation, and work for less desander start-up time or even application.

KOSUN as the pioneer in this industry, KOSUN is capable of providing customers with series products, such as oil & gas drilling fluid solids control equipment, decanter centrifuge,vacuum degasser, drilling waste management equipment and drilling security equipment.