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 4 Comparison of cumulative oil production increment with different fracturing clusters.

Number of new clusters Cumulative oil production increment/104 tons Cumulative oil production increment percentage/% 7 0.878 49.6 10 1.030 58.1 12 1.198 67.6 15 1.239 69.9