Sand removal equipment is often eroded, resulting in solid particle deposition and pipe blockage. In order to solve this problem, a solid-phase/liquid-phase swirling desander device has been developed for separating and eliminating solid particles in well fluids. Compared with the traditional filter desander, kexun swirl desander has the characteristics of compact structure and high working efficiency.
Working principle of cyclone desander:
The basic principle of the cyclone desander is to use centrifugal force to introduce the fluid tangential direction into the conical shell of the cyclone desander. The gravity action pushes the solid particles to the surface of the cone and runs down to the outlet of the separator. The secondary liquid swirl generated in the separation shell causes the liquid to migrate upward and discharge from the overflow port through the swirl detector. The smaller the diameter of the desander cyclone is, the greater the separation effect will be.
Features of KOSUN cyclone desander:
Simple structure, easy operation, safe and reliable use, almost no maintenance;
Compared with the expanded pipe, buffer box and other sand removal equipment, it has the advantages of small volume, large processing capacity and saving field space;
Sand can be removed from the water during the continuous water supply;
It avoids the phenomenon of secondary pollution of water quality in other ways of sand removal and has high efficiency of sand removal.
It is recognized at home and abroad that mud solid control equipment is one of the important symbols of scientific drilling. Through the continuous improvement and improvement of drilling fluid solid-phase control equipment in recent 10 years, it has a significant effect on improving drilling technology, reducing the maintenance workload of circulation system, ensuring the performance of drilling fluid, reducing downhole accidents, increasing drilling speed and reducing cost.
Prior to the 1970s, the petroleum drilling industry used extremely crude drilling fluid shale shaker, with a separation size of only 400 microns and solid particles re-entering the mud circulation system.Later, ultra-fine vibrating screen, cyclone desander, mud desander, drilling fluid centrifuge, vacuum degasser, mud mixer, slurry distribution device, mud tank and electrical operation cabinet, with the total weight of more than ton, the total power consumption has been close to 300KW.Solid content can be controlled to a minimum of less than 5%, and the low-density properties of the drilling fluid can be adjusted as needed.
There is no doubt that these advances have brought about profound changes in the oil drilling industry. But at the same time also greatly increased the well team site repair, maintenance, use of the workload and consumption.Therefore, on the basis of constantly reducing the performance of the mud solid control system, it has become a very concerned issue for experts of mud solid control equipment at home and abroad to simplify the equipment, reduce energy consumption and improve reliability.
Operating principle of drilling mud non-landing system:
In the process of oil and gas field drilling, the drilling mud and cuttings are treated continuously while drilling through specific equipment and technology, and the treated mud is recycled repeatedly, and the cuttings and harmful substances are treated, so as to protect the soil at the drilling site from being polluted. The treatment process is divided into: first, solid-liquid separation and waste residue recovery unit; Second, the waste drying unit.
Advantages of drilling mud system:
The use of the non-landing mud system eliminates the direct excavation of the circulation pool, reduces land use, reduces related costs, and reduces the workload of the well team.Once the system is put into use, it can not only realize the continuous treatment of drilling mud and solid waste, but also recycle the two, which is both environmentally friendly and energy-saving.Mud pollution to the environment will be further controlled, drilling operations will be green.At the same time, the mud system can directly obtain good social and economic benefits.
1. The recycling and clean production of solid waste meet the requirements of circular economy and environmental protection, effectively reduce the environmental risk caused by waste drilling fluid, and help to protect the ecological environment;
Ii. The “smaller” mud and sewage pool reduces the occupied area of the land and saves a certain amount of land collection fee for the oil field company;
3. Compared with the curing treatment cost of waste mud mainly used before, the use of the non-landing mud system has the characteristics of low cost and good effect. Cuttings separated by this technology can be discharged to the standard. As paving material, crop cultivation soil, etc. The water can be recycled to achieve the purpose of waste utilization, energy conservation and emission reduction.
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;
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:
Check whether the attached safety splint should be removed before starting;
Check whether the screen surface on the screen is pressed;
Check whether all locking parts are firm;
Check the connection between vibration motor and screen body;
Check the connection between rubber pad, screen body and frame;
Check the vibration motor;
Check the power supply voltage of the vibrating motor;
Check the interlock control device of the vibration motor;
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;
The installation angles of the two motors shall be consistent;
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.
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.
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.
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:
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:
The task of the liquid-gas separator is to deal with the continuous gas phase and large bubbles;
Provide appropriate residence time for small bubbles to gather in a certain depth below the liquid level;
Solid debris cannot be deposited in the separator;
Apart from the gas column reaching the wellhead, the separator can work normally.