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[1]刘景涛,张文,于洋,等.二叠系火成岩地层井壁稳定性分析[J].中国安全生产科学技术,2019,15(1):75-80.[doi:10.11731/j.issn.1673-193x.2019.01.012]
　LIU Jingtao,ZHANG Wen,YU Yang,et al.Analysis on wellbore stability in Permian igneous rock formation[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2019,15(1):75-80.[doi:10.11731/j.issn.1673-193x.2019.01.012]
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二叠系火成岩地层井壁稳定性分析
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
15
期数:
2019年1期
页码:
75-80
栏目:
职业安全卫生管理与技术
出版日期:
2019-01-31

文章信息/Info

Title:
Analysis on wellbore stability in Permian igneous rock formation
文章编号:
1673-193X(2019)-01-0075-06
作者:
刘景涛1; 张文2; 于洋1; 丁乙2; 梁利喜2
（1.中国石化西北油田分公司 工程技术研究院，新疆 乌鲁木齐 830011；2.西南石油大学 油气藏地质及开发工程国家重点实验室，四川 成都 610500）
Author(s):
LIU Jingtao1;  ZHANG Wen2;  YU Yang1;  DING Yi2;  LIANG Lixi2
(1.Engineering Technology Institute, SINOPEC Northwest Oilfield Branch, Urumqi Xinjiang 830011, China;2.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu Sichuan 610500, China)
关键词:
火成岩; 井壁稳定; 弱结构面; 水化作用
Keywords:
igneous rock;  wellbore stability;  weak structural plane;  hydration
分类号:
X937
DOI:
10.11731/j.issn.1673-193x.2019.01.012
文献标志码:
A
摘要:
火成岩地层是井壁失稳的高危地层，目前针对火成岩井壁稳定性研究缺乏系统分析。基于此，考虑火成岩结构，形成了多结构面强度准则，利用准则构建火成岩地层坍塌压力预测方法，分析该类地层井壁稳定性。研究结果表明：火成岩弱结构面发育，易导致岩石沿结构面破坏，从而降低岩石强度；结构面存在时，坍塌压力分布复杂，尤其弱面数量增多，岩石强度逐渐受弱面控制，坍塌压力显著上升；同时，水化作用也会导致地层坍塌压力增加；水化与弱结构面是火成岩地层井壁失稳的主要因素，考虑两者耦合作用是建立井壁稳定技术的关键。
Abstract:
The igneous rock formation is the high risk formation of wellbore instability, and the systematic investigation on the wellbore stability in the igneous rock formation was lacking. Therefore, the strength criterion of multiple structural planes was formed considering the structure of igneous rock, then the prediction method of collapse pressure in the igneous rock formation was constructed by using the criterion, and the wellbore stability in this type of formation was analyzed. The results showed that the weak structural plane of igneous rock developed, which was easily to cause the rock failure along the structural plane, thus reduce the rock strength. Due to the existence of structural plane, the distribution of collapse pressure was complicated, especially, the number of weak plane increased, and the rock strength was gradually controlled by the weak plane, then the collapse pressure increased obviously. Meanwhile, the hydration effect would lead to the increase of collapse pressure in the formation. The hydration and weak structural plane were the main factors of wellbore instability in the igneous rock formation, and considering their coupling effect was the key to establish the wellbore stability technology.

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相似文献/References:

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　LIU Xiangjun,ZENG Wei,LIANG Lixi,et al.Analysis on influence of shale bedding on wellbore stability[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2016,12(1):88.[doi:10.11731/j.issn.1673-193x.2016.11.015]
[2]李高仁,史亚红,夏宏泉,等.基于Mogi-Coulomb强度准则的井壁稳定性力学分析新方法*[J].中国安全生产科学技术,2018,14(10):70.[doi:10.11731/j.issn.1673-193x.2018.10.011]
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备注/Memo

备注/Memo:
收稿日期： 2018-10-27
基金项目： 国家自然科学基金重点项目(U1262209）；国家自然科学基金项目（41772151）
作者简介： 刘景涛，硕士，工程师，主要研究方向为钻井技术。
更新日期/Last Update: 2019-01-31