Month: October 2024

In the process of oil and gas drilling, water-based mud is generally used in shallow Wells, and oil-based mud is used in deep Wells. Conventional solid control equipment can effectively recover heavy stones and useful drilling fluid items. Suppose these solid phase parts containing heavy metals and compounds (about 12% to 18% oil content) are discharged without treatment. In that case, long-term precipitation will cause great harm to the natural environment such as vegetation, soil, groundwater, and human living environment.

With the continuous improvement of environmental protection requirements, higher requirements have been put forward for drilling site cuttings treatment. The emergence of a drilling waste treatment and purification system can not only solve the site’s environmental problems but also carry out secondary recycling and treatment of the waste generated by the on-site solid control system. While retaining useful mud to the maximum, the drilling cuttings after reprocessing are centrally solidified. Reduce the damage to the surrounding environment.

To effectively dispose of oil-based mud drilling waste, it is necessary to use professional oil-based mud non-landing equipment and systems. The equipment used to deal with oil-based mud is: a screw conveyor + drilling cuttings dryer + environmental protection centrifuge, through this equipment, can effectively dispose of the well site waste mud, and the treated drilling cuttings can also be reused.

Overview of oily sludge

Oily sludge (hereinafter referred to as “sludge”) is a substance composed of water, mud, oil and other impurities. Due to the diversity of sources of sludge, its composition is complicated and it is difficult to control. Its main sources include ground oil spill, ground oil sludge, tank bottom sediment and oil sludge produced in the process of refining. These sludge not only pollute the environment, but also affect the normal progress of production and life. Therefore, effective treatment of oily sludge is particularly important.

2. Oily sludge treatment method

At present, the main methods for the treatment of oily sludge include physical method, chemical method, biological method and hot washing method. Among them, the hot wash method stands out among many methods because of its efficient and clean characteristics.

1. Physical method: the sludge is separated and treated by physical means such as gravity sedimentation and centrifugal separation. This method is suitable for the separation of impurities and oils with large particles, but it cannot completely remove small particles and organic matter.
2. Chemical method: Use chemical reaction to change the physical properties of sludge, such as adding chemical agents to separate oil and water. However, chemical methods often have shortcomings such as residue of chemicals and secondary pollution to the environment.
3. Biological method: The use of microorganisms to degrade organic matter in sludge, although this method is environmentally friendly, but the treatment cycle is long, and the environmental conditions are high.
4. Hot wash method: It is one of the most effective oily sludge treatment methods at present. The hot washing method mainly separates the impurities and oils in the sludge by hot water and detergent under high temperature and pressure environment. The method can effectively remove small particles and organic matter, and the treated sludge is of high quality and can meet the standard of reuse.

Third, the steps of hot washing treatment of oily sludge

1. Pretreatment: Preliminary classification and screening of oily sludge to remove large impurities.
2. Hot washing process: the pre-treated oily sludge is placed in a high temperature and high pressure environment, and stirred by adding detergent. In this process, oils and impurities are broken down and separated under the action of detergents.
3. Solid-liquid separation: The mixture after hot washing is separated by solid-liquid separation equipment to obtain solid waste and clean liquid.
4. Waste treatment: Further processing and treatment of solid waste, so that it meets environmental protection emission standards or can be reused standards. The clean liquid can be reused or disposed of after further treatment.

Fourth, the advantages of hot washing method

1. High efficiency: Hot washing method can quickly treat a large number of oily sludge in a short time.
2. Cleanliness: Oily sludge treated by hot washing method has high cleanliness and good quality.
3. Environmental protection: there is no secondary pollution in the hot wash treatment process, and the treated waste can meet the environmental discharge standards or reuse standards.

V. Conclusion

With the rapid development of industry and the improvement of human awareness of environmental protection, the treatment of oily sludge becomes more and more important. Hot washing method is the best choice to treat oily sludge because of its high efficiency and clean characteristics. However, in the specific implementation process, it is also necessary to pay attention to environmental protection, resource reuse and other issues, to ensure that no new pollution sources are generated in the process of treatment, and to achieve true green production and life.

A brief introduction to the concept of oil-based mud

Oil-based mud, as the name suggests, is a drilling mud with oil as the main component. In oilfield drilling operations, oil-based mud is widely used because of its excellent lubricity, sand-carrying ability, and well-wall protection. However, as drilling operations proceed, oil-based mud mixes with cuttings and various chemical additives to form complex mud systems.

Second, the importance of the treatment of oil-based mud

The improper disposal of oil-based mud will cause serious pollution to the environment. Therefore, how to effectively deal with oil-based mud and realize non-landing treatment has become an important environmental protection measure in oilfield drilling operations.

Third, oil-based mud treatment scheme and equipment

For the treatment of oil-based mud, solid-liquid separation technology is mainly adopted. This requires the use of specific processing equipment and systems. One of the key equipment is the large capacity continuous feed unit, which can handle up to 40-60 tons per hour and can efficiently handle large quantities of oil-based mud.

Fourth, Kosun oil-based mud non-landing system features and advantages

Kosun oil-based mud non-landing system adopts advanced solid-liquid separation technology, with the following features and advantages:

1. Large capacity continuous feeding: The system has a large capacity continuous feeding device, which can efficiently deal with oil-based mud produced by oilfield drilling.
2. Efficient solid-liquid separation: Through efficient solid-liquid separation technology, the liquid content of drilling cuttings is minimized, and the solid phase oil content after treatment is less than 5%, so as to achieve effective oil-water separation and recover a large number of reusable drilling fluids.
3. Integrated control and monitoring: The system adopts PLC integrated control, with an automatic alarm indicator, which can monitor temperature, torque, oil, and running time in real-time, easy to operate, safe, and reliable.
4. Convenient maintenance and transportation: The Kosun oil-based mud non-landing system is designed with a collapsible guardrail and walkway, which is convenient for operators to perform routine maintenance disassembly, and transportation.
5. Environmental protection and economic benefits

The application of the Kosun oil-based mud non-landing system, not only realizes the efficient treatment of oil-based mud and solid-liquid separation, effectively protects the environment, but also recovers a large number of reusable drilling fluids, reducing drilling costs. At the same time, the automatic control and safe and reliable monitoring function of the system also improve the operation efficiency and safety.

Summary: Oil-based mud treatment in oilfield drilling is an important environmental protection project. With its characteristics and advantages of large capacity continuous feeding, efficient solid-liquid separation, integrated control and monitoring, and convenient maintenance and transportation, the Kosun oil-based mud non-landing system provides an efficient, safe, and environmentally friendly oil-based mud treatment solution for oilfield drilling operations.