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A novel approach of tight oil reservoirs stimulation based on fracture controlling optimization and design
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LEI Qun,WENG Dingwei,GUAN Baoshan,MU Lijun,XU Yun,WANG Zhen,GUO Ying,LI Shuai
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Table 2 Income and recovery ratio of reserves of the ultra-low permeability reservoir under different development modes.
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| Development mode | Cumulative oil
production/t | Recovery ratio of reserves after
10 years of production/% | Cost/×104RMB | Net income/
×104RMB | | Diamond inverted nine-spot | 80 774.5 | 15.9 | 1 170 | 23 468.2 | | Square inverted nine-spot | 59 511.6 | 13.5 | 1 170 | 16 982.5 | | Square inverted nine-spot + infilled wells | 66 157.5 | 15.3 | 1 690 | 18 489.7 | | Horizontal wells in 800 m space | 38 187.5 | 1.3 | 2 600 | 9 048.2 | | Horizontal well in 200 m space | 46 094.8 | 6.4 | 2 600 | 11 460.1 |
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