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- W4206906719 abstract "Horizontal well with subdivision cutting fracturing technology is a new technical way to improve the efficient development of shale reservoirs. Subdivision cutting fracturing has the characteristics of stronger inter-fracture interference, more variable parameters and constraints. This fracturing technology has no efficient method to optimize the discrete and continuous fracture parameters integrally. A new automatic integrated optimization algorithm is proposed. The algorithm adopts the SPSA nested binary search algorithm to optimize the discrete and continuous fracture parameters. Considering the flow mechanism of multi-scale media in shale reservoirs, a numerical flow simulation model of subdivision cutting fractured horizontal wells is established. Then, taking the NPV as the objective function, a multi-parameter integrated optimization model is established. Make the method apply to a typical test shale reservoir. The optimization results show that the NPV of the optimum fracture parameter combination is 37.69%–57.36% higher than that of the uniform fracture distribution combination. And the optimum fracture combination presents a spindle-like distribution. This method is applied to an actual shale reservoir in Xinjiang to verify the broad application. The fracture parameter combination of two parallel horizontal wells in the reservoir is optimized. The optimization results show that the NPV has been dramatically improved, with an increasing range of 37.94%–96.84%. And the fractures of two adjacent horizontal wells present zipper staggered distribution. The integrated optimization method of fracture parameters can provide theoretical guidance for hydraulic fracturing design. • A new optimization method of SPSA nested binary search algorithm is proposed to realize the integrated optimization of discrete and continuous fracture parameters. • Considering the flow mechanism of multi-scale media in shale reservoirs, an optimization model with NPV as the objective function is established. • The method has a fast convergence speed and a significant increase in NPV, and the optimized fracture parameters combination is in line with the heterogeneous distribution." @default.
- W4206906719 created "2022-01-26" @default.
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- W4206906719 date "2022-05-01" @default.
- W4206906719 modified "2023-10-17" @default.
- W4206906719 title "Integrated optimization of fracture parameters for subdivision cutting fractured horizontal wells in shale oil reservoirs" @default.
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- W4206906719 doi "https://doi.org/10.1016/j.petrol.2022.110205" @default.
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