各向异性地层中斜井井壁失稳机理

doi:10.7623/syxb201303022

石油学报 ›› 2013, Vol. 34 ›› Issue (3): 563-568.DOI: 10.7623/syxb201303022

各向异性地层中斜井井壁失稳机理

卢运虎^1,2, 陈勉¹, 袁建波¹, 金衍¹, 滕学清^1,2

1. 中国石油大学油气资源与探测国家重点实验室北京 102249;
2. 中国石油塔里木油田公司博士后科研工作站新疆库尔勒 841000

收稿日期:2012-10-30 修回日期:2013-02-11 出版日期:2013-05-25 发布日期:2013-04-09
通讯作者: 金衍,男,1972年8月生,1994年毕业于石油大学(华东),2001年获石油大学(北京)博士学位,现为中国石油大学(北京)石油工程学院教授,主要从事油气井岩石力学与工程的研究。Email:jinyan_cup@163.com
作者简介:卢运虎,男,1983年10月生,2006年毕业于长江大学,2011年获中国石油大学(北京)油气井工程专业博士学位,现为中国石油大学(北京)石油工程学院博士后,主要从事岩石力学、井壁稳定和油田地应力测量方面的研究工作。Email:luyunhu20021768@163.com
基金资助:
国家重点基础研究发展计划(973)项目(2010CB226700)、国家重大科技专项(2011ZX05031-004-005HZ)、国家自然科学基金项目(No.51074171和No.51204191)和中国博士后科学基金(2013M520549)资助。

Borehole instability mechanism of a deviated well in anisotropic formations

LU Yunhu^1,2, CHEN Mian¹, YUAN Jianbo¹, JIN Yan¹, TENG Xueqing^1,2

1. State Key Laboratory of Petroleum Resource & Prospecting, China University of Petroleum, Beijing 102249, China;
2. Post-Doctoral Scientific Research Station, PetroChina Tarim Oilfield Company, Korla 841000, China

Received:2012-10-30 Revised:2013-02-11 Online:2013-05-25 Published:2013-04-09

摘要/Abstract

摘要：

深部层理性地层井壁稳定性必须考虑地层物理力学性质的各向异性,然而目前井壁稳定设计方面仍粗略地将其近似为各向同性体,使得预测的维持井壁稳定的坍塌压力和破裂压力不能满足安全钻井的需要。笔者在研究层理地层岩石力学特性的基础上,获得了一种考虑地层方向特性的井壁围岩应力分布公式,分析了横观各向同性地层的井壁应力分布特征,建立了新的斜井地层井壁稳定分析模型。研究结果表明,岩石的弹性模量、地应力和地层倾斜度的变化对井壁围岩的应力分布和坍塌、破裂压力均会产生影响,克服了常规各向同性井壁稳定分析模型不能准确预测层理性地层斜井井壁稳定的难题。因此在钻井施工设计当中,须根据地层特性选择合适的分析模型,以更好地指导现场实践。

关键词: 井壁稳定, 横观各向同性, 拉伸破坏, 剪切破坏, 各向异性度

Abstract:

Borehole stability in deep laminar formations is in connection with anisotropy of formation mechanical behaviors, but formations are roughly identified as an approximately isotropic body in the current borehole stability design, which makes the predicted fracture pressure and collapse pressure for maintaining borehole stability incapable of meeting the need of drilling safety. Based on the investigation of bedding rock mechanics of formations, a formula was deduced for the stress distribution of borehole surrounding rocks, which takes directional characteristics of formation into consideration, and built up a new analytical model for borehole stability of a deviated well by means of examining borehole stress distributions of transversely isotropic formations. The result showed that variations in rock elastic modulus, crustal stress and inclination of formations may all have an impact on stress distributions, fracture pressure and collapse pressure of borehole surrounding rocks, and this model solves the problem that conventional analytical models for borehole stability of isotropic formations can not exactly forecast the borehole stability of a deviated well in laminar formations. Therefore, it is necessary to choose a proper analytical model according to formation characteristics in designing drilling constructions so as to guide field practice more effectively.

Key words: borehole stability, transverse isotropy, tensile failure, shear failure, anisotropy degree

中图分类号:

TE 243.1

卢运虎, 陈勉, 袁建波, 金衍, 滕学清. 各向异性地层中斜井井壁失稳机理[J]. 石油学报, 2013, 34(3): 563-568.

LU Yunhu, CHEN Mian, YUAN Jianbo, JIN Yan, TENG Xueqing. Borehole instability mechanism of a deviated well in anisotropic formations[J]. Editorial office of ACTA PETROLEI SINICA, 2013, 34(3): 563-568.

参考文献

[1] 金衍,陈勉.井壁稳定力学[M].北京:科学出版社,2012:12-20.

Jin Yan,Chen Mian.Mechanics of wellbore stability[M].Beijing:Science Press,2012:12-20.

[2] 陈勉,金衍,张广清.石油工程岩石力学[M].北京:科学出版社,2008:25-26.

Chen Mian,Jin Yan,Zhang Guangqing.Rock mechanics for petroleum engineering[M].Beijing:Science Press,2008:25-26.

[3] Westergaard H M.Plastic state of stress around a deep well[J].Journal of the Boston Society of Civil Engineers,1940,27:387-391.

[4] 金衍,陈勉,张旭东.钻前井壁稳定预测方法的研究[J].石油学报,2001,22(3):96-99.

Jin Yan,Chen Mian,Zhang Xudong.Study on prediction for borehole stability before drilling[J].Acta Petrolei Sinica,2001,22(3):96-99.

[5] Labenski F,Reid P,Santos H.Drilling fluids approaches for control of wellbore instability in fractured formations[R].SPE/IADC 85304,2003.

[6] Helstrup O A,Chen Zhixi,Rahman S S.Time-dependent wellbore instability and ballooning in naturally fractured formations[J].Journal of Petroleum Science and Engineering,2004,43(1/2):113-128.

[7] 金衍,陈勉.利用地震记录钻前预测井壁稳定性研究[J].石油学报,2004,25(1):89-92.

Jin Yan,Chen Mian.Prediction of borehole stability by seismic records[J].Acta Petrolei Sinica,2004,25(1):89-92.

[8] 黄荣樽,陈勉,邓金根,等.泥页岩井壁稳定力学与化学的耦合研究[J].钻井液与完井液,1995,12(3):15-21.

Huang Rongzun,Chen Mian,Deng Jingen,et al.Study on shale stability of wellbore by mechanics coupling with chemistry method[J].Drilling Fluids & Completion Fluids,1995,12(3):15-21.

[9] 金衍,陈勉.水敏性泥页岩地层临界坍塌时间的确定方法[J].石油钻探技术,2004,32(2):12-14.

Jin Yan,Chen Mian.A method for determining the critical time of wellbore instability at water-sensitive shale formations[J].Petroleum Drilling Techniques,2004,32(2):12-14.

[10] 陈新,杨强,何满潮,等.考虑深部岩体各向异性强度的井壁稳定分析[J].岩石力学与工程学报,2005,24(16):2882-2888.

Chen Xin,Yang Qiang,He Manchao,et al.Stability analysis of wellbore based on anisotropic strength criterion for deep jointed rock mass[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(16):2882-2888.

[11] Lekhnitskii S G.Theory of elasticity of an anisotropic elastic body[M].Translated by Fern P.San Francisco:Holden-Day lnc,1963.

[12] Amadei B.In situ stress measurements in anisotropic rock[J].International Journal of Rock Mechanics and Mining Science & Geomechanics Abstracts,1984,21(6):327-338.

[13] Amadei B.Importance of anisotropy when estimating and measuring in situ stresses in rock[J].International Journal of Rock Mechanics and Mining Science & Geomechanics Abstracts,1996,33(3):293-325.

[14] Ong S H. Borehole stability[D].Oklahoma:University of Oklahoma,1997.

[16] 金衍,张旭东,陈勉.天然裂缝地层中垂直井水力裂缝起裂压力模型研究[J].石油学报,2005,26(6):113-114.

Jin Yan,Zhang Xudong,Chen Mian.Initiation pressure models for hydraulic fracturing of vertical wells in naturally fractured formation[J].Acta Petrolei Sinica,2005,26(6):113-114.

[17] 陈勉,周健,金衍,等.随机裂缝性储层压裂特征实验研究[J].石油学报,2008,29(3):431-434.

Chen Mian,Zhou Jian,Jin Yan,et al.Experimental study on fracturing features in naturally fractured reservoir[J].Acta Petrolei Sinica,2008,29(3):431-434.

[18] 周健,陈勉,金衍,等.裂缝性储层水力裂缝扩展机理试验研究[J].石油学报,2007,28(5):109-113.

Zhou Jian,Chen Mian,Jin Yan,et al.Experimental study on propagation mechanism of hydraulic fracture in naturally fractured reservoir[J].Acta Petrolei Sinica,2007,28(5):109-113.

[19] 金衍,齐自立,陈勉,等.水平井试油过程裂缝性储层失稳机理[J].石油学报,2011,32(2):295-298.

Jin Yan,Qi Zili,Chen Mian,et al.A mechanism study on the fractured reservoir instability during well testing of horizontal wells[J].Acta Petrolei Sinica,2011,32(2):295-298.

[20] Lu Y H,Chen M,Jin Y,et al.A mechanical model of borehole stability for weak plane formation under porous flow[J].Petroleum Science & Technology,2012,30:1629-1638.

[1]	高佳佳, 邓金根, 闫伟, 冯于恬, 王厚东, 李扬. 基于井壁稳定控制建立井眼轨迹优化预测模型[J]. 石油学报, 2016, 37(9): 1179-1186.
[2]	张世锋, 邱正松, 汪海阁, 崔新颖, 徐建根. 泥岩流-固-化耦合模型参数的蒙特卡洛估计[J]. 石油学报, 2016, 37(7): 921-929.
[3]	马天寿, 陈平, 王旭东, 郭昭学, 刘智强. 页岩气储层井周孔隙压力传递数值分析方法[J]. 石油学报, 2016, 37(5): 660-671.
[4]	王伟吉, 邱正松, 钟汉毅, 黄维安, 赵欣, 董兵强, 暴丹. 页岩储层温敏型P(NIPAm-co-AA)/nano-SiO₂复合封堵剂的制备及特性[J]. 石油学报, 2015, 36(3): 378-384.
[5]	吴超, 臧艳彬, 张东清, 吴军, 陈林, 刘超. 定向井随钻井壁稳定预测方法及其应用[J]. 石油学报, 2015, 36(10): 1290-1298.
[6]	邱正松, 张世锋, 黄维安, 罗曦. 新型铝基防塌剂的研制及防塌作用机理[J]. 石油学报, 2014, 35(4): 754-758.
[7]	俞杨烽, 康毅力, 游利军, 陈强, 杨斌. 碱液侵蚀：一种泥页岩井壁失稳新机理[J]. 石油学报, 2013, 34(5): 983-988.
[8]	陈　勉　赵海峰　金　衍　丁云宏　王永辉 . 非连续介质力学模型预测煤层井眼稳定性[J]. 石油学报, 2013, 34(1): 145-150.
[9]	陈朝伟　张　辉　申　彪　尹国庆　王晓丰 . 水平井安全和危险钻井方位[J]. 石油学报, 2013, 34(1): 164-168.
[10]	赵海峰陈勉. 基于实钻资料的井壁稳定实时预测理论[J]. 石油学报, 2011, 32(2): 324-328.
[11]	屈平申瑞臣付利张学磊杨恒林. 三维离散元在煤层水平井井壁稳定中的应用[J]. 石油学报, 2011, 32(1): 153-157.
[12]	侯冰, 陈勉, 金衍, 杨恒林, 张广清. 基于盐岩损伤机理的深部巨厚盐层钻井液密度设计方法[J]. 石油学报, 2009, 30(5): 778-781.
[13]	屈平, 申瑞臣, 杨恒林, 李景翠, 董胜伟. 节理煤层井壁稳定性的评价模型[J]. 石油学报, 2009, 30(3): 455-459.
[14]	薛玉志, 李公让, 蓝强, 武学芹. 超低渗透钻井液稳定井壁的作用机理研究[J]. 石油学报, 2009, 30(3): 434-439.
[15]	曾德智, 林元华, 李留伟, 施太和, 李再军, 白登相. 盐岩层钻大斜度井的井壁稳定性研究[J]. 石油学报, 2007, 28(3): 124-126,130.

各向异性地层中斜井井壁失稳机理

Borehole instability mechanism of a deviated well in anisotropic formations

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价