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[1]刘向君,曾韦,梁利喜,等.页岩层理对井壁稳定性影响分析[J].中国安全生产科学技术,2016,12(11):88-92.[doi:10.11731/j.issn.1673-193x.2016.11.015]
　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(11):88-92.[doi:10.11731/j.issn.1673-193x.2016.11.015]
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页岩层理对井壁稳定性影响分析
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
12
期数:
2016年11期
页码:
88-92
栏目:
现代职业安全卫生管理与技术
出版日期:
2016-11-30

文章信息/Info

Title:
Analysis on influence of shale bedding on wellbore stability
文章编号:
1673-193X(2016)-11-0088-05
作者:
刘向君; 曾韦; 梁利喜; 熊健
（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 Xiangjun;  ZENG Wei;  LIANG Lixi;  XIONG Jian
(State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu Sichuan 610500, China)
关键词:
岩石力学; 井壁稳定; 龙马溪页岩; 坍塌压力; 水化损伤
Keywords:
rock mechanics;  wellbore stability;  Longmaxi shale;  collapse pressure;  hydration damage
分类号:
X937
DOI:
10.11731/j.issn.1673-193x.2016.11.015
文献标志码:
A
摘要:
为了分析页岩的层理和水化损伤对钻井过程中井壁稳定性的影响，开展室内岩石三轴力学试验测试页岩原始状态和钻井液作用不同时间的力学特性；然后基于孔隙弹性理论和岩石弱面强度理论，综合考虑层理产状和水化损伤对页岩强度的影响，建立页岩地层井壁稳定性分析模型。结果表明：层理产状和水化损伤对井壁稳定性有显著的影响，都会导致坍塌压力升高，加剧井壁的不稳定性。综合考虑页岩的层理和水化损伤两个因素分析地层井壁稳定性，对优化不同时段钻井液性能，调整钻井液密度，保证钻井安全有重要意义。
Abstract:
In order to analyze the influence of bedding and hydration damage of shale on wellbore stability in drilling process, the laboratory triaxial mechanics tests of rock were conducted to test the initial conditions of shale and its mechanics characteristics under different action time of drilling fluid. Based on the poroelastic theory and the rock weak plane strength theory, an analysis model on wellbore stability in shale formation was established with comprehensively considering the influence of bedding attitude and hydration damage on shale strength. The calculation results showed that the bedding attitude and hydration damage have significant effects on wellbore stability, and both of them will cause the increase of collapse pressure and exacerbate the wellbore instability. The analysis on formation wellbore stability with comprehensively considering both the factors of bedding attitude and hydration damage has great significance for optimizing the performance of drilling fluid in different time period, adjusting the density of drilling fluid and ensuring the drilling safety.

参考文献/References:

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备注/Memo

备注/Memo:
国家自然科学基金联合项目(U1262209)； 国家自然科学基金项目(51274172)；国家自然科学基金重点项目(51134004)
更新日期/Last Update: 2017-01-04