There exists abundant oil and gas reserves in low-permeability reservoirs in china,with proven reserves of 14.1 billion tons,accounting for 49.2%of the total oil and gas reserves in the country.The proven reserves of low-permeability reservoirs in Shengli Oilfield account for 20%of the total reserves.With the gradual decline of the total amount of oil and gas storage,the strategic significance of low-permeability reservoirs is increasing.The efficient development of low-permeability reservoirs is of great significance to the stability and development of China's oil industry.This research has formed the"water well functional drag reduction,injection and energy supplement"technology,which has effectively solved the problems of difficult injection and short effective period in low-permeability reservoirs,and achieved the purpose of water flooding in low-permeability reservoirs to significantly improve oil recovery,and escorted the development and production efficiency of the oilfield.
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