考虑水化效应的页岩压裂水平井套管变形位置预测方法

doi:10.3969/j.issn.1006-6535.2026.03.012

特种油气藏 ›› 2026, Vol. 33 ›› Issue (3): 106-114.DOI: 10.3969/j.issn.1006-6535.2026.03.012

考虑水化效应的页岩压裂水平井套管变形位置预测方法

上官自然^1,2, 李红涛^1,2, 吴生军³, 李皋^1,2, 窦正道⁴, 王建⁴, 付成林⁴

1.西南石油大学石油与天然气工程学院,四川成都 610500;
2.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;
3.中国石油青海油田分公司,青海海西 816400;
4.中国石化江苏油田分公司,江苏扬州 225001

收稿日期:2024-11-28 修回日期:2026-03-13 出版日期:2026-06-25 发布日期:2026-09-04
通讯作者: 李红涛(1986—),男,副教授,2009年毕业于西南石油大学石油工程专业,2015年毕业于该校油气井工程专业,获博士学位,现从事井筒流动压力控制与地质力学方面的教学和科研工作。
作者简介:上官自然(1997—),男,2019年毕业于西南石油大学石油工程专业,现为该校石油与天然气工程专业在读博士研究生,主要从事岩石力学与工程地质力学方面的科研工作。
基金资助:
四川省自然科学基金“超深层裂缝性气层钻井复杂工况井筒瞬态流动特性及井口回压控制压力反馈规律研究”(2023NSFSC0929)

A method for predicting casing deformation locations in hydraulically fractured horizontal shale wells considering hydration effects

SHANGGUAN Ziran^1,2, LI Hongtao^1,2, WU Shengjun³, LI Gao^1,2, DOU Zhengdao⁴, WANG Jian⁴, FU Chenglin⁴

1. Petroleum Engineering School,Southwest Petroleum University,Chengdu,Sichuan 610500,China;
2. State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University,Chengdu,Sichuan 610500,China;
3. PetroChina Qinghai Oilfield Company,Haixi,Qinghai 816400,China;
4. Sinopec Jiangsu Oilfield Company,Yangzhou,Jiangsu 225001,China

Received:2024-11-28 Revised:2026-03-13 Online:2026-06-25 Published:2026-09-04

摘要/Abstract

摘要： 为准确预测页岩压裂水平井套管变形位置,以苏北盆地高邮凹陷花庄地区深层页岩油井为研究对象,基于微地震反演数据,建立压裂区-水泥环-套管耦合有限元模型,结合页岩水化实验与力学参数测试结果,定量分析压裂过程的地应力场与套管变形特征,并建立了考虑水化效应的页岩压裂水平井套管变形位置预测方法。研究表明:花庄地区阜二段深层页岩在水化作用下岩石刚度下降明显,并产生膨胀效应,对地应力场产生扰动效应;压裂过程中,压裂区内地应力显著增大,破坏了原有地应力平衡,尤其在非对称压裂区,地应力场的剪切作用使得套管发生了显著的轴向“S”形变形和径向椭圆化变形,椭圆化变形是主要破坏机制。与现场实际套管变形情况对比,模拟结果与现场套管失效位置一致。基于分析结果,提出了一系列防治和优化措施。该研究成果对页岩油气藏的高效开发具有重要的工程应用意义。

关键词: 页岩, 水平井, 套管变形, 水化作用, 体积压裂

Abstract: To accurately predict the locations of casing deformation in hydraulically fractured horizontal shale wells,this study took deep shale oil wells in the Huazhuang area of the Gaoyou Sag,Subei Basin,as the research target.Based on microseismic inversion data,a coupled finite element model of the fractured zone,casing-cement sheath,and casing was established.Combined with shale hydration experiments and mechanical parameter tests,the geostress field and casing deformation characteristics during hydraulic fracturing were quantitatively analyzed,and a prediction method for casing deformation locations in hydraulically fractured horizontal shale wells considering hydration effects was established.The results show that,under hydration,the deep shale of the second member of the Funing Formation in the Huazhuang Area exhibits a marked decrease in rock stiffness and an obvious swelling effect,thereby disturbing the geostress field.During hydraulic fracturing,the geostress within the fractured zone increases significantly and destroys the original geostress equilibrium.Particularly in asymmetrical fractured zones,the shear action of the geostress field causes pronounced axial S-shaped deformation and radial ovalization of the casing,with ovalization being the principal failure mechanism.Compared with actual field casing deformation,the simulated deformation locations are consistent with the observed casing failure locations.Based on the analysis,a series of preventive and optimization measures are proposed.The study has important engineering significance for the efficient development of shale oil and gas reservoirs.

Key words: shale, horizontal well, casing deformation, hydration effect, volume fracturing

中图分类号:

TE928

上官自然, 李红涛, 吴生军, 李皋, 窦正道, 王建, 付成林. 考虑水化效应的页岩压裂水平井套管变形位置预测方法[J]. 特种油气藏, 2026, 33(3): 106-114.

SHANGGUAN Ziran, LI Hongtao, WU Shengjun, LI Gao, DOU Zhengdao, WANG Jian, FU Chenglin. A method for predicting casing deformation locations in hydraulically fractured horizontal shale wells considering hydration effects[J]. Special Oil & Gas Reservoirs, 2026, 33(3): 106-114.

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考虑水化效应的页岩压裂水平井套管变形位置预测方法

A method for predicting casing deformation locations in hydraulically fractured horizontal shale wells considering hydration effects

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