Drilling waste mud is one of the main pollution sources of oil and gas industry. It is a kind of stable colloidal suspension system containing clay, weighting materials, various chemical treatment agents, sewage, waste oil and drilling cuttings. The main components harmful to the environment are hydrocarbons, salts, various polymers, lignosulfonate, some metal ions (mercury, copper, arsenic, chromium, zinc and lead) and impurities in barite. Drilling mud is a solid pollutant produced in the process of oil well exploitation. It is a complex multiphase system containing mineral oil, phenolic compounds and heavy metals, and its leaching solution has high toxicity. A large amount of waste drilling mud is produced every day in oilfield drilling production. The direct discharge of waste drilling mud will affect the nutritional environment and quality of crop growth. Long term accumulation will cause serious damage to surface vegetation, pollute soil and water, and endanger human survival. Therefore, in addition to safety engineering, the treatment of oilfield drilling waste mud also needs better methods and processes in the follow-up treatment of waste mud.
In the process of oil and gas exploitation and drilling, a lot of drilling mud will be produced. The composition of drilling waste mud is complex, mainly composed of clay, weighting materials, various chemical treatment agents, sewage, waste oil and cuttings. Due to the variety of chemical treatment agents used in the drilling process, the waste mud has high COD, deep chroma, high pH and many heavy metal ions, which seriously exceed the standard. With the improvement of people's living standards and the strengthening of environmental protection awareness, the harm and impact of drilling waste mud on the environment is attracting more and more attention, which has become a long-term environmental problem in the oil and gas exploitation industry. At present, many countries have listed it as an important environmental protection project to study. With the increasingly stringent requirements of national emission reduction, the research on Harmless Technology of drilling waste mud has become an urgent problem of environmental protection in China's petroleum industry.
The oilfield mud waste treatment system, which is independently developed and produced by Craun, is a complete skid mounted system for drilling mud waste treatment. It integrated highly, and it can be used only when it is placed and installed according to the site requirements. According to different mud media, it can be divided into water-based mud treatment system and oil-based mud treatment system. After treatment, the water content and oil content of mud cuttings can be effectively controlled (water content: 8% - 10%, oil content: 3% - 5%). After treatment, the mud has stable performance and can be reused for drilling platform; it can save the cost of mud and reduce the discharge pollution to meet the requirements of environmental protection.
In the process of oil and gas exploitation and drilling, a lot of drilling mud will be produced. The composition of drilling waste mud is complex, mainly composed of clay, weighting materials, various chemical treatment agents, sewage, waste oil and cuttings. Due to the variety of chemical treatment agents used in the drilling process, the waste mud has high COD, deep chroma, high pH and many heavy metal ions, which seriously exceed the standard. With the improvement of people's living standards and the strengthening of environmental protection awareness, the harm and impact of drilling waste mud on the environment is attracting more and more attention, which has become a long-term environmental problem in the oil and gas exploitation industry. At present, many countries have listed it as an important environmental protection project to study. With the increasingly stringent requirements of national emission reduction, the research on Harmless Technology of drilling waste mud has become an urgent problem of environmental protection in China's petroleum industry.
The oilfield mud waste treatment system, which is independently developed and produced by Craun, is a complete skid mounted system for drilling mud waste treatment. It integrated highly, and it can be used only when it is placed and installed according to the site requirements. According to different mud media, it can be divided into water-based mud treatment system and oil-based mud treatment system. After treatment, the water content and oil content of mud cuttings can be effectively controlled (water content: 8% - 10%, oil content: 3% - 5%). After treatment, the mud has stable performance and can be reused for drilling platform; it can save the cost of mud and reduce the discharge pollution to meet the requirements of environmental protection.
