The development of China's offshore low-permeability and unconventional reservoirs face problems such as low production capacity,high investment,high operating costs,low returns,and heavy economic tasks for individual well.With years of technological breakthroughs,China National Offshore Oil Corporation(CNOOC)has developed a series of offshore reservoir stimulation operation modes such as platform fracturing,drilling vessel fracturing,and tugboat fracturing.The offshore low-permeability reservoir stimulation technology and large-scale fracturing technology suitable for deep coal seams on land have been developed.This offshore low-permeability reservoir stimulation technology includes offshore fracturing fluid system,offshore water control proppant technology,fracturing string design for low-permeability reservoir,and offshore reservoir stimulation monitoring technology.This paper provides an overview of China's offshore low-permeability oil and gas reservoir stimulation technology and large-scale fracturing technology for deep coal seams on land.Moreover,the key development directions for future reservoir stimulation have also been discussed.This psper has important guiding significance for promoting the technological progress of CNOOC low-permeability and unconventional reservoir development.
关键词
海上低渗油藏/非常规油气/陆上深煤层/储层改造/压裂
Key words
offshore low permeability reservoirs/unconventional oil and gas/deep coal seams on land/reservoir stimulation/fracturing
维普
万方数据