The Analysis of Key Technologies of Electro-hydraulic Composite Control Intelligent Completion at Home and Abroad

Intelligent completion technology, as a cutting-edge technology in the field of oil and gas extraction, significantly improves oil and gas recovery efficiency and reservoir management level through real-time monitoring and control of downhole parameters. Electro-hydraulic composite intelligent completion realizes precise control and monitoring of downhole reservoir fluids through electric control pipelines and hydraulic control pipelines. Its core technologies include downhole flow control technology and multi-parameter detection technology, etc. The electro-hydraulic composite control intelligent completion system combines the precise control capability of electric drive and the high-power density advantage of hydraulic drive, making it a key technology for the efficient development of complex oil and gas reservoirs. With the global development of oil and gas resources extending to deep sea, unconventional and complex structure reservoirs, traditional completion technology has been difficult to meet the needs of efficient development. Electro-hydraulic composite control intelligent completion technology has received extensive attention due to its unique advantages. This paper aims to comprehensively analyze the principles, characteristics and development trends of key technologies of electro-hydraulic composite control intelligent completion at home and abroad. Combined with the actual situation of oilfields in China, it gives the mature conditions and key problems to be solved for the research and development of key technologies of electro-hydraulic composite control intelligent completion in China, so as to provide reference for relevant researches.