页岩气藏水平井多段压裂套管变形损坏模拟研究

慈建发; 于浩; 汤思杰; 李年银

doi:10.3969/j.issn.1006-6535.2026.03.017

特种油气藏 >

2026 , Vol. 33 >Issue 3: 149 - 157

DOI: https://doi.org/10.3969/j.issn.1006-6535.2026.03.017

钻采工程

页岩气藏水平井多段压裂套管变形损坏模拟研究

慈建发 ,
于浩 ,
汤思杰 ,
李年银

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1.中国石化西南油气分公司石油工程技术研究院,四川德阳 618099;
2.西南石油大学石油与天然气工程学院,四川成都 610500;
3.西南石油大学油气藏地质及开发工程全国重点实验室,四川成都 610500

慈建发(1977—),男,高级工程师,2001年毕业于西南石油学院应用地球物理专业,2008年毕业于西南石油大学油气田开发专业,获博士学位,现从事油气藏增产改造技术研究工作。

收稿日期: 2024-10-24

修回日期: 2026-03-13

网络出版日期: 2026-09-04

基金资助

国家自然科学基金“复杂碳酸盐岩储层转向酸与固体转向剂协同转向机理研究”(U1762107)

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Numerical simulation of casing deformation and failure in multistage hydraulic fracturing of shale gas horizontal wells

CI Jianfa ,
YU Hao ,
TANG Sijie ,
LI Nianyin

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1. Research Institute of Petroleum Engineering Technology,Sinopec Southwest Oil & Gas Company,Deyang,Sichuan 618099,China;
2. Petroleum Engineering School,Southwest Petroleum University,Chengdu,Sichuan 610500,China;
3. State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University,Chengdu,Sichuan 610500,China

Received date: 2024-10-24

Revised date: 2026-03-13

Online published: 2026-09-04

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摘要

大规模体积压裂产生的复杂缝网可导致大范围的地应力场重分布,地应力场的变化会导致套管受力变化,并出现套管变形损坏。针对该问题,提出了一种基于微地震检测反演水力裂缝网群并以此研究套管损坏的方法。该方法可以对体积改造区域和压裂过程中岩石破碎程度进行描述,采用Cohesive黏聚单元的牵引-分离准则表征裂缝体区域的损伤演化过程,并以GS-HF井多段体积压裂为研究对象,建立套管-水泥环-地层相互作用有限元模型,开展分段压裂有限元模拟。研究表明:模拟的套管变形点与现场基本吻合;在分段体积压裂过程中,地层原始体积破碎,导致在裂缝体区域“临时”失去地应力场挤压作用,从而出现了应力反转区域,即应力亏空区,非对称性的体积改造区域使得地应力对套管和地层岩石产生横向剪切力,导致套管沿其径向或轴向发生一定程度的变形。该方法通过有限元模型逐级模拟分段压裂过程,并分析其对套管失效的影响,以此来精准定位套管变形高风险区域,可为现场及时调整压裂方案和优化井网部署提供依据。

关键词： 页岩气藏; 套管变形; 压裂; 缝网群; 地应力场; 微地震检测

本文引用格式

慈建发 , 于浩 , 汤思杰 , 李年银 . 页岩气藏水平井多段压裂套管变形损坏模拟研究[J]. 特种油气藏, 2026 , 33(3) : 149 -157 . DOI: 10.3969/j.issn.1006-6535.2026.03.017

Abstract

Large-scale volumetric fracturing can generate complex fracture networks,leading to extensive redistribution of the in-situ stress field.Variations in the in-situ stress field may alter casing loads and induce casing deformation and failure.To solve this problem,a method was proposed to invert hydraulic fracture networks on the basis of microseismic monitoring data and thereby investigate casing damage.This method can characterize both the stimulated reservoir volume and the degree of rock fragmentation during fracturing.The traction-separation law of cohesive elements was adopted to describe the damage evolution of fractured zones.With the multistage volumetric fracturing of Well GS-HF as a case study,a finite element model describing the interaction among casing,cement sheath and formation was established and staged fracturing simulations were performed.The results show that the simulated casing deformation locations are generally consistent with field observations.During multistage volumetric fracturing,the original formation volume is fragmented,causing the fractured zones to“temporarily”lose confinement from the in-situ stress field and thus forming stress reversal regions,namely stress deficit zones.The asymmetric stimulated reservoir volume causes the in-situ stress field to exert lateral shear forces on both the casing and formation rock,resulting in a certain degree of radial or axial casing deformation.By progressively simulating the staged fracturing process with a finite element model and analyzing its effect on casing failure,this method can accurately identify high-risk zones of casing deformation,and thus provide a basis for timely adjustment of fracturing schemes and optimization of well pattern deployment in the field.

Key words： shale gas reservoir; casing deformation; hydraulic fracturing; fracture network; in-situ stress field; microseismic monitoring

参考文献

[1] LOUCKS R G,RUPPEL S C.Mississipian Barnett shale:lithofacies and depositional setting of a deep-water shale-gas succession in the FortWorth Basin,Texas[J].AAPG Bulletin,2007,91(4):579-601.
[2] NIKKI T H,NICHOLAS B H,CHERY A M,et al.A sequence-stratigraphic framework for the Upper Devonian Woodford Shale,Permian Basin,west Texas[J].AAPG Bulletin,2014,98(1):23-47.
[3] WANG G,CARR T R,JU Y,et al.Dentifying organic-rich Marcellus shale lithofacies by support vector machine classifier in the Appalachian basin[J].Computers and Geosciences,2014,64(3):52-60.
[4] BOWKER K A.Barnett shale gas production,FortWorth Basin:issues and discussion[J].AAPG Bulletin,2007,91(4):523-533
[5] 陈朝伟,曹虎,周小金,等.四川盆地长宁区块页岩气井套管变形和裂缝带相关性[J].天然气勘探与开发,2020,43(4):123-130.
CHEN Zhaowei,CAO Hu,ZHOU Xiaojin,et al.Correlation between casing deformation and fracture zones in Changning shale gas block,Sichuan Basin[J].Natural Gas Exploration and Development,2020,43(4):123-130.
[6] 陈朝伟,房超,朱勇,等. 四川页岩气井套管变形特征及受力模式[J].石油机械,2020,48(2):126-134.
CHEN Zhaowei,FANG Chao,ZHU Yong,et al.Deformation characteristics and stress modes of casings for shale gas wells in Sichuan[J].China Petroleum Machinery,2020,48(2):126-134.
[7] 李留伟,王高成,练章华,等.页岩气水平井生产套管变形机理及工程应对方案——以昭通国家级页岩气示范区黄金坝区块为例[J].天然气工业,2017,37(11):91-99.
LI Liuwei,WANG Gaocheng,LIAN Zhanghua,et al.Deformation mechanism of horizontal shale gas well production casing and its engineering solution:a case study on the Huangjinba Block of the Zhaotong National Shale Gas Demonstration Zone[J].Natural Gas Industry,2017,37(11):91-99.
[8] 郭雪利,李军,柳贡慧,等.基于震源机制的页岩气压裂井套管变形机理[J].断块油气田,2018,25(5):665-669.
GUO Xueli,LI Jun,LIU Gonghui,et al.Research on casing deformation for shale gas wells based on focal mechanism[J].Fault-Block Oil & Gas Field,2018,25(5):665-669.
[9] 陈朝伟,项德贵,张丰收,等.四川长宁—威远区块水力压裂引起的断层滑移和套管变形机理及防控策略[J].石油科学通报,2019,4(4):364-377.
CHEN Zhaowei,XIANG Degui,ZHANG Fengshou,et al.Fault slip and casing deformation caused by hydraulic fracturing in Changning-Weiyuan Blocks,Sichuan:mechanism and prevention strategy[J].Petroleum Science Bulletin,2019,4(4):364-377.
[10] 毛良杰,林颢屿,余星颖,等.页岩气储层断层滑移对水平井套管变形的影响[J].断块油气田,2021,28(6):755-760.
MAO Liangjie,LIN Haoyu,YU Xingying,et al.Influence of fault slip on casing deformation of horizontal well in shale gas reservoir[J].Fault-Block Oil & Gas Field,2021,28(6):755-760.
[11] JALALI H H,ROFOOEI F R,ATTARI N K A,et al.Experimental and finite element study of the reverse faulting effects on buried continuous steel gas pipelines[J].Soil Dynamics and Earthquake Engineering,2016,86:1-14.
[12] CHIPPERFIELD S T,WONG J R,WARNER D S,et al.Shear dilation diagnostics:a new approach for evaluating tight gas stimulation treatments[J].Australian Energy Producers Journal,2007,200:221-238.
[13] HOSSAIN M M,RAHMAN M K,RAHMAN S S.Volumetric growth and hydraulic conductivity of naturally fractured reservoirs during hydraulic fracturing:a case study using Australian conditions[C].SPE63173-MS,2000:1-12.
[14] LI Hongtao,LI Ze,LI Gao,et al.Casing deformation mechanisms of horizontal wells in Weirong shale gas field during multistage hydraulic fracturing[J].Journal of Natural Gas Science and Engineering,2020,84:103646.
[15] LI Lei,TAN Jingqiang,TAN Yuyang,et al.Chapter eight-microseismic analysis to aid gas reservoir characterization[J].Sustainable Geoscience for Natural Gas Subsurface Systems,2022,32:219-242.
[16] 位云生,林铁军,于浩,等.基于嵌入黏聚单元法的页岩储层压裂缝网扩展规律[J].天然气工业,2022,42(10):74-83.
WEI Yunsheng,LIN Tiejun,YU Hao,et al.Propagation law of fracture network in shale reservoirs based on the embeded cohesive unit method[J].Natural Gas Industry,2022,42(10):74-83.
[17] 赵金洲,周莲莲,马建军,等.考虑解吸扩散的页岩气藏气水两相压裂数值模拟[J].天然气地球科学,2015,26(9):1640-1645.
ZHAO Jinzhou,ZHOU Lianlian,MA Jianjun,et al.Numerical simulation of fracturing wells considering desorption and diffusion effect for shale gas with gas-water two phases[J].Natural Gas Geoscience,2015,26(9):1640-1645.
[18] 赵金洲,王强,胡永全,等.多孔眼裂缝竞争起裂与扩展数值模拟[J].天然气地球科学,2020,31(10):1343-1354.
ZHAO Jinzhou,WANG Qiang,HU Yongquan,et al.Numerical simulation of multi-hole fracture competition initiation and propagation[J].Natural Gas Geoscience,2020,31(10):1343-1354.
[19] 张烨,欧阳黎明,王锦喜,等.页岩气开采诱发地震及其震级上限影响因素的研究综述[J].非常规油气,2025,12(6):1-12.
ZHANG Ye,OUYANG Liming,WANG Jinxi,et al.Review of research on earthquakes induced by shale gas exploitation and influencing factors of their upper magnitude limits[J].Unconventional Oil & Gas,2025,12(6):1-12.
[20] 席岩,柳贡慧,李军,等.力-热耦合作用下套管应力瞬态变化研究[J].石油机械,2017,45(6):8-12.
XI Yan,LIU Gonghui,LI Jun,et al.Study on casing transient stress under thermo-mechanical coupling effect[J].China Petroleum Machinery,2017,45(6):8-12.
[21] 朱益飞.页岩气开发中的微地震检测技术[J].中国计量,2017,23(8):101-102,104.
ZHU Yifei.Microseismic monitoring technologies in shale gas development[J].China Metrology,2017,23(8):101-102,104.
[22] 郭雪利.页岩气压裂井套管载荷分析及变形机理研究[D].北京:中国石油大学(北京),2019.
GUO Xueli.Research on casing load analysis and casing deformation mechanism of shale gas wells during multistage fracturing[D].Beijing:China University of Petroleum (Beijing),2019.
[23] 吴华.地层条件下岩石力学特性研究[D].北京:中国石油大学(北京),2010.
WU Hua.Study of mechanics parameters of rocks under formation condition[D].Beijing:China University of Petroleum (Beijing),2010.
[24] 席岩,李军,柳贡慧,等.瞬态力-热耦合作用下水泥环形态对套管应力的影响[J].断块油气田,2017,24(5):700-704.
XI Yan,LI Jun,LIU Gonghui,et al.Impact analysis of cement sheath shape on casing stress under transient mechanical-thermal coupling effect[J].Fault-Block Oil & Gas Field,2017,24(5):700-704.
[25] 任威严.温度和地层耦合作用对套管变形机理分析[D].北京:中国石油大学(北京),2017.
REN Weiyan.Mechanism analysis of casing deformation by temperature and stratum coupling [D].Beijing:China University of Petroleum(Beijing),2017.
[26] 谢鹏,常江涛,陈信斌.含椭圆度和腐蚀缺陷海底管道的压溃承载能力研究[J].船舶力学,2023,27(7):1096-1108.
XIE Peng,CHANG Jiangtao,CHEN Xinbin.Study on collapse bearing capacity of submarine pipeline with ovality and corrosion defects[J].Journal of Ship Mechanics,2023,27(7):1096-1108.
[27] 代清,林颢屿,陈春宇,等.页岩气井水力压裂对水平井套管变形影响分析[J].机械设计与研究,2022,38(3):118-121,126.
DAI Qing,LIN Haoyu,CHEN Chunyu,et al.Influence of hydraulic fracturing on casing deformation of horizontal wells in shale gas wells[J].Machine Design & Research,2022,38(3):118-121,126.

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