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The solid control system for oil and gas drilling

The solid-control system, also known as the drilling fluid purification system, is mainly used for solid-phase control and solid-liquid separation in the drilling fluid, so that the drilling fluid can be recycled. The solid control system is composed of 3-7 composite tanks, equipped with 4-stage purification equipment, suitable for oil drilling projects of 2000-7000m.This innovative system USES a composite tank with a tapered base and a mud mixer at the edges to prevent solid deposits in the drilling fluid. In addition, mud tanks and mud boxes can be separated or combined as required by the drilling process. Each tank is connected to each other through a network of pipes, and the suction valve is flexible when open and tight when closed.

As a manufacturer of solid control equipment that has passed the us API and ISO certification, KOSUN’s solid control system has also passed the European Union CE certification, which can meet the requirements of export developed countries. KOSUN’s solid control system has been exported to more than 60 countries and regions, has been unanimously recognized by customers, has accumulated a good reputation in the industry.

The solid control system for oil and gas drilling usually includes the following equipment:

1. The drilling fluid vibrating screen can separate solid particles larger than 100 microns;

2. Drilling fluid desander, capable of separating 40-100 micron solids;

3. Desilter to separate 20-40 micron particles;

4. Drilling fluid centrifuge can separate 2-7 micron fine particles.

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Shale shaker in preparation for operation, the technical personnel to carry out a basic inspection.

Shale shaker in preparation for operation, the technical personnel to carry out a basic inspection, especially the new shaker, but also to carry out a detailed inspection, inspection work completed, all aspects of the operation standard, you can start the shale shaker.

The matters needing attention in the use inspection of vibrating screen are:

  1. Check whether the attached safety splint should be removed before starting;
  2. Check whether the screen surface on the screen is pressed;
  3. Check whether all locking parts are firm;
  4. Check the connection between vibration motor and screen body;
  5. Check the connection between rubber pad, screen body and frame;
  6. Check the vibration motor;
  7. Check the power supply voltage of the vibrating motor;
  8. Check the interlock control device of the vibration motor;
  9. The staff shall remove the end caps at both ends of the vibrating motor used on the shaker, and then check whether the phase Angle corresponding to the fan block is consistent. The staff shall then tighten the fastening screws of the fan block;
  10. The installation angles of the two motors shall be consistent;
  11. Check the feeding device;
  12. Tighten the gate;
  13. No-load test of the shale shaker;
  14. During the test, there shall be no collision or abnormal sound between the screen body and the frame;
  15. Check the amplitude, the screen body for reciprocating linear movement should not have distortion and other abnormal phenomena;
  16. After 10-15 minutes of operation, tighten the bolts for the driving mechanism with a wrench.
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KOSUN’s HDD trenchless mud recovery system is designed and manufactured to meet trenchless technical requirements.

Horizontal directional crossing is a horizontal directional crossing construction technology used for trenchless construction in the process of gradually strengthening the awareness of modern civilization and environmental protection. Adopting horizontal directional crossing technology for pipeline crossing construction is the choice of urban municipal construction and electrification pipe network transformation, communication cable laying and crossing large and medium-sized rivers, lakes and non-removable buildings, and the construction method that does not damage the geomorphic state and protect the environment. In recent years, horizontal directional crossing technology in the world and the industry has been widely used, especially in environmental protection and municipal pipeline network reconstruction project and large pipeline crossing river engineering projects show its advantage, mud recovery purification system is combined with horizontal directional crossing the rig construction of form a complete set of matching, to complete the process of the construction of pipeline crossing.

KOSUN’s HDD trenchless mud recovery system is designed and manufactured to meet trenchless technical requirements and is used to purify mud returned from underground during trenchless horizontal directional crossing. HDD trenchless mud recovery system, compact structure, convenient handling, easy to use, widely used in the field of HDD trenchless and coal seam development.

KOSUN KSMR-1000 mud recycling and purification system is mainly used for trenchless horizontal directional crossing or coal-bed methane mining construction projects with treatment capacity below 1000GPM.This type of system is used to handle construction projects with high mud volume.

KOSUN KSMR-500 mud circulation recovery and purification system is mainly used for construction projects with trenchless horizontal directional crossing or coal-bed methane mining with treatment capacity below 500GPM.

KOSUN KSMR-200 mud circulation recovery and purification system is mainly used for construction projects with trenchless horizontal directional crossing or coal-bed methane mining whose treatment capacity is below 200GPM.

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The ES translational elliptical shale shaker produced by KOSUN adopts the long tube vibration motor as the power source.

The ES translational elliptical shale shaker produced by KOSUN adopts the long tube vibration motor as the power source, which has superior performance, reasonable structure, stable operation, long service life and low maintenance cost. Under the same conditions, compared with other types of shaker, the drilling fluid processing capacity and sand transport and debris removal ability can be greatly improved, and can effectively overcome the phenomenon of “screen blocking” and “screen paste”.

KOSUN’s translational elliptical shale shaker has an obvious advantage in the treatment of highly viscous drilling fluids. Under this condition, the optimized translational elliptical vibration trajectory can effectively remove the viscous solid phase, so that the larger particles in the drilling fluid can be effectively removed. At the same time, relatively moderate vibration intensity can effectively reduce the consumption of vibrating screen.

Features and advantages of KOSUN ES translational elliptical shale shaker:

1. The balanced elliptical trajectory can effectively reduce the phenomenon of screen hole blockage and ensure the screen penetration rate;

2. It is beneficial to improve the conveying speed of cuttings in viscous drilling fluid and prevent paste screening;

3. Can handle large proportion and high viscosity drilling fluid;

4. Drier cuttings;

5. Longer screen service life;

6. Quick tensioning system, easy to replace the screen;

7.-1°~+5° screen Angle adjusting device;

8. There are two types of feeding boxes: weir type and box type;

9. The hook edge screen has a flat screen.

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Final disposal and utilization of sludgeⅡ

After sludge is treated and disposed by a series of methods, there are generally the following final disposal methods for the dried sludge:

Energy utilization

For sludge, engineering technology can be adopted to extract and synthesize the organic matter and heavy metal elements rich in sludge, so as to realize energy recovery. At present, sludge can be treated in an anaerobic environment, so that the microorganisms contained in the sludge can be fully fermented and degraded, and finally produce methane gas. After the methane is collected, it can be used as clean fuel, and the residual solid can be used as organic fertilizer. In the protection of the environment at the same time, the realization of high resource requirements. In addition, there are a series of technologies such as low-temperature sludge oil production technology and sludge fuel utilization technology to realize energy utilization.

Sludge for building materials

Another way to solve the sludge disposal is using sludge production of building materials, asphalt, through engineering technology can achieve the sludge system sludge ceramics grain biochemical fiberboard, sludge, sludge system of ecological cement and other building materials, the sludge of waste disposal requirements, protection of the environment at the same time to achieve the sludge.

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With the development of drilling technology, drilling depth is deeper and deeper, and mud requirements are more and more strict.

With the development of drilling technology, drilling depth is deeper and deeper, and mud requirements are more and more strict. Some complex geological conditions under the ordinary mud shaker can no longer meet the requirements of use. Moreover, the performance of the ordinary drilling vibrating screen is not very stable, and the effect of drilling vibrating screen treatment can not be adapted according to the drilling geology, often there will be some run-slurry or “horseshoe effect”. The appearance of the translational elliptical vibrating screen has solved these problems.

The translational elliptical vibrating screen USES 2 vibration motors of different sizes and keeps them on a datum level. Due to the different steering and excitation force of the two motors, the motion trajectory is elliptical. And the movement track of the whole sieve box of the translational elliptical vibrating screen is the same. The ellipse of the translational ellipse vibrating screen is different from the ordinary ellipse, the ellipse track and the screen have a certain Angle, so the “horseshoe effect” is avoided.

Advantages of translational elliptical vibrating screen:

  1. Treatment capacity is increased by 25%-30% compared with linear vibrating screen;
  2. Can adapt to a variety of geological conditions drilling mud recovery and purification;
  3. The excitation force can be adjusted;
  4. Linear vibrating screen has the advantages of translational elliptical vibrating screen have.
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The liquid-gas separator is mainly used to deal with large bubbles in drilling fluid.

The liquid-gas separator is mainly used to deal with large bubbles in drilling fluid. When gas invasion occurs, throttle exhaust operation should be carried out. When overflow occurs, kill the well; Drilling fluid enters the liquid-gas separator from the throttling manifold for degassing.

The drilling fluid separated from the above two conditions has small bubbles, which enter the vibrating screen for degassing, flow to the sunk sand bin, and then enter the vacuum degasser device for conventional degassing.

In the ultra-high pressure gas well drilling, because into the cylinder gas volume, liquid volume is very different. This requires that the treatment capacity of the separator should have a relatively wide range of adaptability, and its treatment capacity of gas and liquid should be able to meet the needs of well killing construction. In the design of the scheme, the following considerations should be taken into account:

  1. The task of the liquid-gas separator is to deal with the continuous gas phase and large bubbles;
  2. Provide appropriate residence time for small bubbles to gather in a certain depth below the liquid level;
  3. Solid debris cannot be deposited in the separator;
  4. Apart from the gas column reaching the wellhead, the separator can work normally.
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The treatment of drilling waste is to control the water content of drilling cuttings in drilling mud.

The treatment of drilling waste is to control the water content of drilling cuttings in drilling mud, stabilize the performance of liquid phase, and achieve the purpose of dry treatment. The liquid phase can be used for secondary injection without destroying, so that the enterprises can expand the drilling scale without environmental protection worries.

The use of drilling mud not landing system eliminates the direct digging and circulating pool, reduces the land use, reduces the related costs, and reduces the workload of well crew. More importantly, once the system is put into use, it can not only realize harmless treatment of drilling mud and solid waste, but also recycle both of them, which is environmentally friendly and energy-saving. Mud pollution to the environment will be largely eradicated, so as to create a “green” logo, oil drilling exploration field to create greater social and economic benefits.

Solid liquid separation and waste residue recovery stage: drilling mud through the elevated manifold into the mud vibrating screen to remove large solid particles, and then sand pump pumping treated mud into the desander, desilter to remove sand and mud, mud treatment in the mud, the treated mud into the mud tank for further treatment.

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The screw conveyor produced by xi ‘an KOSUN is used in the drilling waste disposal project.

The screw conveyor produced by xi ‘an KOSUN is used in the drilling waste disposal project, providing an effective and low-cost drillings transportation system for offshore drilling and land drilling devices. The screw conveyor adopts the combined structure of more than 12 feet in each section, which can be flexibly assembled and used in different drilling sites, with simple operation, stable structure, strong adaptability in working space and high safety performance. Thus, the working efficiency of the equipment is greatly improved and the cost and resources are saved. The screw blade of screw conveyor is made of wear-resistant material to ensure its service life.

When the screw shaft rotates, the material can only move forward along the bottom of the screw conveyor under the push of the blade due to the gravity of the material and the friction generated by the friction between the material and the tank wall, which is just like the translation movement of the unrotatable nut along the rotating screw. The movement of the material in the intermediate bearing depends on the thrust of the material moving forward behind it. Therefore, the material transport in the conveyor, is a complete slip motion. In order to make the spiral shaft in a more favorable tension state, generally will drive the device and discharge port on the same end of the conveyor, and the feed port as far as possible on the other end of the tail near. The rotating spiral blade moves the material and carries on the transportation, causes the material not to revolve together with the spiral conveyor blade the force is the material own weight and the screw conveyor casing to the material the friction resistance. According to the different materials, there are solid surface, belt surface and blade surface. The spiral shaft of the screw conveyor has a thrust bearing at the end of the direction of material movement. Intermediate hanging bearings should be added when the captain is longer.

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The vc-1000 series vertical cuttings dryer produced by KOSUN is a vertical scraper discharge centrifuge.

The application of vertical cuttings dryer is currently at home and abroad to solve the drilling waste management in areas such as solid-liquid separation dryer mud treatment equipment, the traditional waste sludge treatment is used more pressure filter, but the operation is more troublesome, and the intensity of labor is big, cost is high, and drilling cuttings dryer is the modern solid-liquid separation, it does not need to add chemicals, cover an area of an area small, simple operation, low cost but also strong processing capacity, processing waste solid phase moisture content is low.

With the continuous improvement of national environmental protection requirements, major oil fields are faced with the problem of drilling waste disposal.

The vc-1000 series vertical cuttings dryer produced by KOSUN is a vertical scraper discharge centrifuge, which separates solid and liquid phases through centrifugal separation principle. Vertical cuttings dryer can effectively recover liquid components in cuttings, making solid phase transition very dry. It is suitable for water-based mud, oil-based mud and synthetic mud to recover the mud in cuttings, thus reducing drilling costs and environmental pollution. Its processing capacity is 40~60 tons per hour, and the liquid content/oil content of the treated cuttings is lower than 5%, meeting international emission standards and environmental requirements. It can be used for cuttings treatment in land and sea drilling.

While working, raise the support of driller to the highest place to meet the driller’s driller discharge. The centrifuge is placed on the tank body of the pry seat, and the discharged liquid part flows directly into the bottom collection tank. While drilling fluid is needed, it can be delivered via a delivery pump or connected to a tank of similar height.