Optimization of refracturing timing for horizontal wells in tight oil reservoirs: A case study of Cretaceous Qingshankou Formation, Songliao Basin, NE China

Jianchun GUO,Liang TAO,Fanhui ZENG

Table 3 Comparison of cumulative oil production increment with different refracturing methods.

Refracturing method Initial daily oil production/tons Cumulative oil production increment/104 tons Cumulative oil production increment percentage/% Refracturing of preexisting fractures 22.1 0.388 21.9 Existent fracture extension 30.7 0.579 32.7 Inter-fracture treatment 42.3 0.878 49.6 Temporary plugging and diverting inside fractures 35.8 0.802 45.3