西南石油大学学报（自然科学版）2025，Vol.47Issue(5)：99-111,13.DOI:10.11885/j.issn.1674-5086.2023.05.10.01
非均匀射孔与暂堵促进多裂缝均匀扩展数值模拟
Numerical Simulation of Uniform Propagation of Multiple Fracture Promotion though Non-uniform Perforation and Temporary Plugging
何昀宾 1任冀川 2陈铭 3郭天魁 3王云鹏3
作者信息
- 1. 西南石油大学石油与天然气工程学院,四川,成都 610500||中国石油集团大庆钻探工程有限公司,黑龙江 大庆 163453
- 2. 西南石油大学石油与天然气工程学院,四川,成都 610500||油气藏地质及开发工程全国重点实验室·西南石油大学,四川成都 610500
- 3. 中国石油大学(华东)石油工程学院,山东,青岛 266580
- 折叠
摘要
Abstract
Multi-cluster fracturing of horizontal wells is a key technique for unconventional oil and gas development,in which uneven propagation of multiple fractures is a critical factor limiting production increases.Based on a planar three-dimensional model of multi-fracture propagation,taking into account the heterogeneity of in-situ stress,non-uniform perforation,and tem-porary plugging within the fracturing stage,a multi-cluster fracturing model for horizontal wells was established and a program was developed to simulate the dynamic propagation of unevenly expanding fractures with consideration of in-situ stress het-erogeneity.The study found that the heterogeneity of in-situ stress within the fracturing stage had a significant impact on the competitive expansion of multiple fractures.Adding 2～4 perforation holes in high-stress clusters could balance stress het-erogeneity to a certain degree,but there is an efficiency limit when the in-situ stress heterogeneity is strong.Regarding the temporary plugging process within the fracturing stage,the timing of temporary plugging had almost no effect on the increase in bottom hole pressure,and early temporary plugging was beneficial for the balanced distribution of liquid between clusters.The number of temporary plugging operations had a significant impact on the increase in bottomhole pressure,and three tem-porary plugging operations could increase bottom hole pressure by about 10 MPa.Two to three temporary plugging operations could achieve a relatively balanced liquid injection,but the effect of promoting balanced injection becomes less clear when the number of temporary plugging operations exceeds two.关键词
裂缝扩展/多簇压裂/非均匀射孔/段内暂堵/进液分配Key words
fracture propagation/multi-cluster fracturing/non-uniform perforation/temporary plugging/liquid injection distri-bution分类
石油、天然气工程引用本文复制引用
何昀宾,任冀川,陈铭,郭天魁,王云鹏..非均匀射孔与暂堵促进多裂缝均匀扩展数值模拟[J].西南石油大学学报（自然科学版）,2025,47(5):99-111,13.
