非均匀射孔与暂堵促进多裂缝均匀扩展数值模拟

doi:10.11885/j.issn.1674-5086.2023.05.10.01

西南石油大学学报(自然科学版) ›› 2025, Vol. 47 ›› Issue (5): 99-111.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

何昀宾^1,2, 任冀川^1,3, 陈铭⁴, 郭天魁⁴, 王云鹏⁴

1. 西南石油大学石油与天然气工程学院, 四川, 成都 610500:2. 中国石油集团大庆钻探工程有限公司, 黑龙江大庆 163453;
3. 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;
4. 中国石油大学(华东)石油工程学院, 山东, 青岛 266580

收稿日期:2023-05-10 发布日期:2025-11-04
通讯作者: 任冀川，E-mail:renjichuan_petro@qq.com
作者简介:何昀宾，1979年生，男，汉族，四川通江人，高级工程师，主要从事井下作业技术研究工作。E-mail:heyunbin@cnpc.com.cn
任冀川，1988年生，男，汉族，河北涿州人，副研究员，博士，主要从事油气增产改造理论与技术研究及生产工作。E-mail: renjichuan_petro@qq.com
陈铭，1990年生，男，汉族，山东泰安人，副教授，博士，主要从事裂缝扩展模拟与诊断技术工作。E-mail: chenmingfrac@163.com
郭天魁，1984年生，男，汉族，山东寿光人，教授，博士，主要从事储层压裂改造理论与技术研究。E-mail: guotiankui@126.com
王云鹏，1999年生，男，汉族，山东淄博人，博士研究生，主要从事油气储层水力压裂裂缝扩展数值模拟研究。E-mail: ypwupc@163.com

Numerical Simulation of Uniform Propagation of Multiple Fracture Promotion though Non-uniform Perforation and Temporary Plugging

HE Yunbin^1,2, REN Jichuan^1,3, CHEN Ming⁴, GUO Tiankui⁴, WANG Yunpeng⁴

1. Petroleum Engineering School, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
2. Daqing Drilling Engineering Company Limited, CNPC, Daqing, Heilongjiang 163453, China;
3. State Key Laboratory of Oil and Gas Reservoir Geology and Exploration, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
4. School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China

Received:2023-05-10 Published:2025-11-04

摘要/Abstract

摘要： 水平井分段多簇压裂是非常规油气开发的关键方式，而多裂缝不均衡扩展是制约产量上升的关键因素。基于平面三维多裂缝扩展模型，考虑压裂段内地应力非均质性、非均匀射孔与段内暂堵工艺，建立了水平井分段多簇压裂模型并编制程序，基于该模拟器研究了考虑段内地应力非均质性的非均匀射孔、段内暂堵多簇裂缝扩展动态。研究发现：段内地应力非均质性对多裂缝竞争扩展有较大影响，在高应力簇增加2～4个射孔孔眼可以平衡一定的应力非均质性，但是在段内应力非均质性较强的情况下存在效率上限；对于段内暂堵工艺，暂堵时机对井底压力的升高幅度几乎没有影响，早期暂堵有利于簇间液体均衡分配；暂堵次数对井底压力升高幅度影响较大，3次暂堵可以使井底压力升高约10 MPa； 2～3次暂堵可以实现较为均衡的进液，但当暂堵次数超过2，其促进均衡进液的效果减弱。

关键词: 裂缝扩展, 多簇压裂, 非均匀射孔, 段内暂堵, 进液分配

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 temporary 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 heterogeneity. 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 heterogeneity 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 temporary 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.

Key words: fracture propagation, multi-cluster fracturing, non-uniform perforation, temporary plugging, liquid injection distribution

中图分类号:

TE377

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.

HE Yunbin, REN Jichuan, CHEN Ming, GUO Tiankui, WANG Yunpeng. Numerical Simulation of Uniform Propagation of Multiple Fracture Promotion though Non-uniform Perforation and Temporary Plugging[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2025, 47(5): 99-111.

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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

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