摘要：The mechanisms underlying formation energy depletion after initial fracturing and post-refracturing production decline in shale oil horizontal wells remain poorly understood. This study proposes a novel numerical simulation framework for refracturing processes based on a three-dimensional fully coupled hydromechanical model. By dynamically reconfiguring the in situ stress field through integration of production data from initial fracturing stages, our approach enables precise control over fracture propagation trajectories and intensities, thereby enhancing reservoir stimulation volume (RSV) and residual oil recovery. The implementation of fully coupled hydromechanical simulation reveals two critical findings: (1) the 70 m fracture half-length generated during initial fracturing fails to access residual oil-rich zones due to insufficient fracture network complexity; (2) a 3–5° stress reorientation combined with reservoir repressurization before refracturing significantly improves fracture network interconnectivity. Field validation demonstrates that refracturing extends fracture half-lengths to 97–154 m (38–120% increase) and amplifies RSV by 125% compared to initial operations. The developed seepage–stress coupling methodology establishes a theoretical foundation for optimizing repeated fracturing designs in unconventional reservoirs, providing critical insights into residual oil mobilization through engineered stress field manipulation. ? 2025 by the authors.

ISSN号：2227-9717

卷、期、页：卷13期6

发表日期：2025-06-01

影响因子：0.000000

期刊分区（SCI为中科院分区）：四区

收录情况：SCI（科学引文索引印刷版）,EI（工程索引）,SCIE（科学引文索引网络版）

发表期刊名称：Processes

参与作者：梁宏波,马泽元,鄢雪梅,Bai, Xiaohu,Ren, Jiawei,顾斐

通讯作者：包鹏虎,皮之洋,李烨,葛琛琦,张雨杰,杨兴,路赟利,武丹

第一作者：惠钢

论文类型：期刊论文

论文概要：梁宏波,包鹏虎,惠钢,马泽元,鄢雪梅,Bai, Xiaohu,Ren, Jiawei,皮之洋,李烨,葛琛琦,张雨杰,杨兴,路赟利,武丹,顾斐，Simulation Study of Refracturing of Shale Oil Horizontal Wells Under the Effect of Multi-Field Reconfiguration，Processes，2025，卷13期6

论文题目：Simulation Study of Refracturing of Shale Oil Horizontal Wells Under the Effect of Multi-Field Reconfiguration