Article(id=1273953318851339069, tenantId=1146029695717560320, journalId=1272209045839646724, issueId=1273953231114887613, articleNumber=null, orderNo=null, doi=10.20174/j.JUSE.2026.02.24, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1741622400000, receivedDateStr=2025-03-11, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1781663740121, onlineDateStr=2026-06-17, pubDate=1776614400000, pubDateStr=2026-04-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1781663740121, onlineIssueDateStr=2026-06-17, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1781663740121, creator=13701087609, updateTime=1781663740121, updator=13701087609, issue=Issue{id=1273953231114887613, tenantId=1146029695717560320, journalId=1272209045839646724, year='2026', volume='22', issue='2', pageStart='377', pageEnd='752', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1781663719203, creator=13701087609, updateTime=1781663760928, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1273953406235467954, tenantId=1146029695717560320, journalId=1272209045839646724, issueId=1273953231114887613, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1273953406235467955, tenantId=1146029695717560320, journalId=1272209045839646724, issueId=1273953231114887613, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=622, endPage=630, ext={EN=ArticleExt(id=1273953319023305535, articleId=1273953318851339069, tenantId=1146029695717560320, journalId=1272209045839646724, language=EN, title=Integrated Simulation of Stress Evolution and Hydraulic Fracturing After Long-Term Injection and Production in Low-Permeability Reservoirs, columnId=null, journalTitle=Chinese Journal of Underground Space and Engineering, columnName=null, runingTitle=null, highlight=null, articleAbstract=

Before refracturing, due to the long-term injection and production of old wells, the distribution of regional formation pressure shows non-uniform variations. It is urgent to coupling consider this non-uniform stress evolution in the subsequent refracturing. For this purpose, taking the Chang-6 reservoir in the W block of Changqing Oilfield as an example, an in-situ stress evolution model under long-term injection and production of vertical wells is established using the Fast Lagrangian Analysis of Continua. The simulated stress field is then imported into a hydrofracture numerical model based on the discrete lattice method for modeling fracture propagation of refracturing, achieving an integrated simulation of in-situ stress evolution and hydraulic fracturing evolution. The results show that: (1) After the production of well WJ, the pore pressure around this well decreases by about 4 MPa, and the two horizontal principal stresses experience a similar synchronous reduction, but the decreasing magnitude is only about 2.5 MPa. This indicates that production will result in a decrease in the total stress but an increase in the effective stress. (2) Hydraulic fractures tend to propagate towards the depleted area preferentially. The engineering measures, such as slowly injecting fluid or shutting in before refracturing to increase the formation pressure in the depleted area, are recommended on site, thereby avoiding or reducing refracturing fractures extending into these areas. (3) As the injection time increases, the primary growth of refracturing fractures transitions from area expansion to width expansion, indicating that a short-duration, high-volume refracturing should be adopted. On the one hand, maximizing reservoir transformation can be achieved in a short time, on the other hand, increasing the injection rate can promote the even expansion of multiple fractures.

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由于老井经历长期注采,区域地层压力分布在空间上呈现非均匀变化,在后续的重复压裂过程中亟需耦合考虑这种非均匀应力演化。为此,以长庆油田W区块长6储层为例,基于快速拉格朗日差分法建立了垂直井丛长期注采下的地应力演化模型,并将模拟得到的地应力场导入基于离散格子方法的水力压裂数值模型中,预测了重复压裂裂缝扩展,实现了地应力场演化—水力裂缝扩展的一体化模拟。结果表明:(1)WJ井生产后,井周围孔隙压力下降约4 MPa,并且两个水平主应力发生类似的同步降低,但变化幅度更小(约2.5 MPa),这表明生产将导致井周围地层的总应力降低但有效应力增加;(2)水力裂缝倾向于朝地层压力衰竭区优势扩展,在现场建议采取工程措施如重复压裂前缓慢注液或关井以使衰竭区的地层压力上升,避免或减少重复压裂裂缝扩展至压力衰竭区;(3)随着注入时间增加,重复压裂裂缝由以面积增长为主转为以宽度增长为主,说明重复压裂应该选取短时间、大排量的策略,一方面可在短时间内实现最大化的储层改造,另一方面增大排量也可促进多簇裂缝均衡扩展。

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王小华(1992—),男,四川自贡人,博士,主要从事石油工程岩石力学的研究工作。E-mail:
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尹子睿(1996—),男,湖南邵阳人,博士生,主要从事非常规油气储层水力压裂的研究工作。E-mail:

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尹子睿(1996—),男,湖南邵阳人,博士生,主要从事非常规油气储层水力压裂的研究工作。E-mail:

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尹子睿(1996—),男,湖南邵阳人,博士生,主要从事非常规油气储层水力压裂的研究工作。E-mail:

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低渗油藏长期注采应力演化与压裂一体化模拟
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尹子睿 1, 2 , 张丰收 1, 2 , 翁定为 3 , 梁宏波 3 , 王小华 1, 2
地下空间与工程学报 | 理论与试验研究 2026,22(2): 622-630
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地下空间与工程学报 | 理论与试验研究 2026, 22(2): 622-630
低渗油藏长期注采应力演化与压裂一体化模拟
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尹子睿1, 2 , 张丰收1, 2, 翁定为3, 梁宏波3, 王小华1, 2
作者信息
  • 1.同济大学 土木工程学院,上海 200092
  • 2.同济大学 岩土及地下工程教育部重点实验室,上海 200092
  • 3.中国石油勘探开发研究院,河北 廊坊 065007
  • 尹子睿(1996—),男,湖南邵阳人,博士生,主要从事非常规油气储层水力压裂的研究工作。E-mail:

通讯作者:

王小华(1992—),男,四川自贡人,博士,主要从事石油工程岩石力学的研究工作。E-mail:
Integrated Simulation of Stress Evolution and Hydraulic Fracturing After Long-Term Injection and Production in Low-Permeability Reservoirs
Zirui Yin1, 2 , Fengshou Zhang1, 2, Dingwei Weng3, Hongbo Liang3, Xiaohua Wang1, 2
Affiliations
  • 1.College of Civil Engineering, Tongji University, Shanghai 200092, P. R. China
  • 2.Key Laboratory of Geotechnical &Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, P. R. China
  • 3.Research Institute of Petroleum Exploration and Development, China National Petroleum Corporation, Langfang, Hebei 065007, P. R. China
出版时间: 2026-04-20 doi: 10.20174/j.JUSE.2026.02.24
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由于老井经历长期注采,区域地层压力分布在空间上呈现非均匀变化,在后续的重复压裂过程中亟需耦合考虑这种非均匀应力演化。为此,以长庆油田W区块长6储层为例,基于快速拉格朗日差分法建立了垂直井丛长期注采下的地应力演化模型,并将模拟得到的地应力场导入基于离散格子方法的水力压裂数值模型中,预测了重复压裂裂缝扩展,实现了地应力场演化—水力裂缝扩展的一体化模拟。结果表明:(1)WJ井生产后,井周围孔隙压力下降约4 MPa,并且两个水平主应力发生类似的同步降低,但变化幅度更小(约2.5 MPa),这表明生产将导致井周围地层的总应力降低但有效应力增加;(2)水力裂缝倾向于朝地层压力衰竭区优势扩展,在现场建议采取工程措施如重复压裂前缓慢注液或关井以使衰竭区的地层压力上升,避免或减少重复压裂裂缝扩展至压力衰竭区;(3)随着注入时间增加,重复压裂裂缝由以面积增长为主转为以宽度增长为主,说明重复压裂应该选取短时间、大排量的策略,一方面可在短时间内实现最大化的储层改造,另一方面增大排量也可促进多簇裂缝均衡扩展。

岩石力学  /  渗流-应力耦合  /  裂缝  /  地应力  /  水平井

Before refracturing, due to the long-term injection and production of old wells, the distribution of regional formation pressure shows non-uniform variations. It is urgent to coupling consider this non-uniform stress evolution in the subsequent refracturing. For this purpose, taking the Chang-6 reservoir in the W block of Changqing Oilfield as an example, an in-situ stress evolution model under long-term injection and production of vertical wells is established using the Fast Lagrangian Analysis of Continua. The simulated stress field is then imported into a hydrofracture numerical model based on the discrete lattice method for modeling fracture propagation of refracturing, achieving an integrated simulation of in-situ stress evolution and hydraulic fracturing evolution. The results show that: (1) After the production of well WJ, the pore pressure around this well decreases by about 4 MPa, and the two horizontal principal stresses experience a similar synchronous reduction, but the decreasing magnitude is only about 2.5 MPa. This indicates that production will result in a decrease in the total stress but an increase in the effective stress. (2) Hydraulic fractures tend to propagate towards the depleted area preferentially. The engineering measures, such as slowly injecting fluid or shutting in before refracturing to increase the formation pressure in the depleted area, are recommended on site, thereby avoiding or reducing refracturing fractures extending into these areas. (3) As the injection time increases, the primary growth of refracturing fractures transitions from area expansion to width expansion, indicating that a short-duration, high-volume refracturing should be adopted. On the one hand, maximizing reservoir transformation can be achieved in a short time, on the other hand, increasing the injection rate can promote the even expansion of multiple fractures.

rock mechanics  /  seepage-stress coupling  /  fractures  /  in-situ stress  /  horizontal well
尹子睿, 张丰收, 翁定为, 梁宏波, 王小华. 低渗油藏长期注采应力演化与压裂一体化模拟. 地下空间与工程学报, 2026 , 22 (2) : 622 -630 . DOI: 10.20174/j.JUSE.2026.02.24
Zirui Yin, Fengshou Zhang, Dingwei Weng, Hongbo Liang, Xiaohua Wang. Integrated Simulation of Stress Evolution and Hydraulic Fracturing After Long-Term Injection and Production in Low-Permeability Reservoirs[J]. Chinese Journal of Underground Space and Engineering, 2026 , 22 (2) : 622 -630 . DOI: 10.20174/j.JUSE.2026.02.24
  • 国家重点研发计划政府间国际科技创新合作项目(2023YFE0110900)
  • 国家自然科学基金国际(地区)合作与交流重点项目(42320104003)
  • 国家自然科学基金青年科学基金(42407223)
2026年第22卷第2期
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doi: 10.20174/j.JUSE.2026.02.24
  • 接收时间:2025-03-11
  • 首发时间:2026-06-17
  • 出版时间:2026-04-20
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  • 收稿日期:2025-03-11
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国家重点研发计划政府间国际科技创新合作项目(2023YFE0110900)
国家自然科学基金国际(地区)合作与交流重点项目(42320104003)
国家自然科学基金青年科学基金(42407223)
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    1.同济大学 土木工程学院,上海 200092
    2.同济大学 岩土及地下工程教育部重点实验室,上海 200092
    3.中国石油勘探开发研究院,河北 廊坊 065007

通讯作者:

王小华(1992—),男,四川自贡人,博士,主要从事石油工程岩石力学的研究工作。E-mail:
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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