Produced in the process of oil and gas exploration and development, drilling fluid waste amount is large, due to containing various products at the same time, the concentration of pollutant composition complex, high, high chromaticity, chemical oxygen demand (cod), the traditional approach is difficult to adapt to the new environmental protection requirements, an urgent need to accelerate drilling waste management efficient treatment and new technology, new technology and new equipment development, application, change the traditional waste drilling fluid end management ideas, set up the drilling pollution “wellsite closed loop” process control and new concept of clean production and complete the engineering application, Realize the new drilling clean production mode of “well standardization, green source, process reduction, end resource and equipment integration”.
Based on this, we look forward to the next trend: first, we should strengthen the exploration and field application of environmental protection drilling fluid, develop intelligent environmental protection drilling fluid technology, and reduce the difficulty and cost of end treatment and disposal of drilling fluid waste by greening the source. Ii. Improve the selective removal technology of micro and poor quality solid phase in drilling fluid, upgrade the treatment device, formulate the group’s unified drilling cleaner production standards, well site design standards and performance standards of recycled drilling fluid, and maximize the recovery and utilization of waste drilling fluid and waste water through process reduction. Iii. Establish the technical specifications for the classification, classification, temporary storage, treatment and disposal of drilling fluid wastes. According to different well depths, different drilling fluid systems and different lithologies, adopt corresponding treatment and comprehensive utilization technologies respectively, and realize the transformation of drilling fluid wastes into treasure through end-resource recovery. Iv. For drilling fluid wastes with different physical properties and different pollutant contents, different modular treatment units are selected to realize the modularization and standardization of drilling fluid waste treatment equipment through the integration of equipment.