北特鲁瓦地区裂缝性碳酸盐岩地层井壁稳定性研究

张艳娜; 韩正波; 孔璐琳; 陈强; 刘厚彬

doi:10.3969/j.issn.1006-6535.2021.01.024

特种油气藏 >

2021 , Vol. 28 >Issue 1: 161 - 169

DOI: https://doi.org/10.3969/j.issn.1006-6535.2021.01.024

钻采工程

北特鲁瓦地区裂缝性碳酸盐岩地层井壁稳定性研究

张艳娜 ,
韩正波 ,
孔璐琳 ,
陈强 ,
刘厚彬

展开

1.中国石油勘探开发研究院,北京 100083;
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;
3.西南石油大学,四川成都 610500;
4.中国石油西部钻探国际工程公司,新疆乌鲁木齐 830000

张艳娜(1982—),女,工程师,2006年毕业于长江大学油田化学专业,2012年毕业于中国石油勘探开发研究院油气井工程专业,获博士学位,现从事钻完井液技术研究工作。

收稿日期: 2020-03-26

修回日期: 2020-10-27

网络出版日期: 2021-04-27

基金资助

国家科技重大专项“中亚和中东地区复杂碳酸盐岩油气藏采油采气关键技术研究与应用”(2017ZX0503-005)

收起

Study on the Wellbore Stability in Fractured Carbonate Formations in North Truva Area

Zhang Yanna ,
Han Zhengbo ,
Kong Lulin ,
Chen Qiang ,
Liu Houbin

Expand

1. Research Institute of Petroleum Exploration and Development,Beijing 100083,China;
2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu 610500,Sichuan,China;
3. Southwest Petroleum University,Chengdu 610500,Sichuan,China;
4. CNPC Xibu Drilling Engineering Company Limited,Urumqi 830000,Xinjiang,China

Received date: 2020-03-26

Revised date: 2020-10-27

Online published: 2021-04-27

Fold

摘要

北特鲁瓦地区石炭系中统巴什基尔阶(KT-II)碳酸盐岩地层裂缝发育,钻井过程中井壁垮塌问题严重。为提高钻井效率,研究了KT-II碳酸盐岩地层裂缝产状及缝间充填物质,测试了碳酸盐岩基质及缝间充填物组分,分析了裂缝发育对碳酸盐岩地层孔渗特性、力学强度的影响。同时,耦合地应力场、渗流场及裂缝力学弱面效应等因素,建立了裂缝性碳酸盐岩地层井壁失稳理论模型,开展了北特鲁瓦地区KT-II碳酸盐岩地层井壁稳定性预测。结果表明:北特鲁瓦地区KT-II碳酸盐岩地层裂缝发育,裂缝间力学弱面效应突出,是诱发井壁垮塌的主导因素;裂缝发育加强了钻井液沿裂缝的渗流运移,弱化了钻井液对井壁的支撑作用;裂缝的产状、井眼轨迹对碳酸盐岩地层井壁稳定性影响明显,与裂缝面倾向夹角180°方向钻井井壁稳定性最好,优化井眼轨迹可有效提高裂缝性地层井壁稳定性。研究成果揭示了裂缝性碳酸盐岩地层井壁失稳机理与主要影响因素,为裂缝性碳酸盐岩地层井眼轨迹设计及工程参数优选提供借鉴。

关键词： 碳酸盐岩; 裂缝弱面; 坍塌机理; 井壁稳定; 北特鲁瓦地区

本文引用格式

张艳娜 , 韩正波 , 孔璐琳 , 陈强 , 刘厚彬 . 北特鲁瓦地区裂缝性碳酸盐岩地层井壁稳定性研究[J]. 特种油气藏, 2021 , 28(1) : 161 -169 . DOI: 10.3969/j.issn.1006-6535.2021.01.024

Abstract

The fracture development of carbonate formation in the Carboniferous Middle Bashkir Order (KT-II) in North Truva area has caused serious wellbore collapse during drilling.In order to improve the drilling efficiency,the fracture occurrence and inter-fracture filler of KT-II carbonate formation were studied,the carbonate matrix and inter-fracture filler components were tested,and the influence of fracture development on the pore permeability characteristics and mechanical strength of the carbonate formation was analyzed.At the same time,a theoretical model of wellbore instability in fractured carbonate formations was established by coupling the ground stress field,seepage field and fracture mechanical weak plane effect,and the prediction of wellbore stability in KT-II carbonate formations in North Truva area was carried out.The results show that:the development of fractures in the KT-II carbonate formation in the North Truva area and the prominent inter-fracture mechanical weak plane effect are the dominant factors inducing the wellbore collapse; the development of fractures strengthens the seepage migration of drilling fluid along the fractures and weakens the supporting effect of the drilling fluid on the wellbore; the fracture occurrence and wellbore trajectory have obvious effects on the stability of the wellbore in the carbonate formations,drilling in the direction of 180° to the dip angle of the fracture plane can bring the optimal wellbore stability,and optimizing the wellbore trajectory can effectively improve the wellbore stability in fractured formations.The results of the study reveal the mechanism and main influencing factors of the wellbore instability in fractured carbonate formations,and provide a reference for the design of wellbore trajectory and the selection of engineering parameters in fractured carbonate formations.

Key words： carbonate rock; fracture weak plane; collapse mechanism; wellbore stability; North Truva Area

参考文献

[1] 王冠贵,章成广,高华,等.用全波测井资料确定的碳酸盐岩地层的破裂压力值的分析[J].地球物理测井,1990,14(3):178-188.
WANG Guangui,ZHANG Chengguang,GAO Hua,et al.Analysis of fracturing pressure measurements derived from full waveform acoustic logs in carbonates[J].Geophysical Well Logging,1990,14(3):178-188.
[2] 屈东升.川东高陡构造井塌原因及防塌措施研究[J].钻采工艺,2000,23(5):85-87.
QU Dongsheng.Research on the cause of well collapse and anti-collapse measures in the high-steep structure of eastern Sichuan[J].Drilling & Production Technology,2000,23(5):85-87.
[3] 姬智.川西石油深井井下复杂情况及故障预防与处理[J].中国石油和化工标准与质量,2018,38(15):134-135.
JI Zhi.Underground complex situation and Fault prevention and treatment in the deep wells of western Sichuan Oil[J].China Petroleum and Chemical Standard and Quality,2008,38(15):134-135.
[4] 董才源,谢增业,朱华,等.川中地区中二叠统气源新认识及成藏模式[J].西安石油大学学报(自然科学版),2017,32(4):18-23.
DONG Caiyuan,XIE Zengye,ZHU Hua,et al.New insight for gas source and gas accumulation modes of Middle Permian in central Sichuan basin[J].Journal of Xi'an Shiyou University (Natural Science),2017,32(4):18-23.
[5] 赖锦,王贵文.川中蓬莱地区须二段储层成岩相及其对孔隙结构影响[J].特种油气藏,2013,20(1):34-38.
LAI Jin,WANG Guiwen.Diagenetic facies of Xu member II of Penglai Area of central Sichuan Basin and its influences on reservoir pore structure[J].Special Oil & Gas Reservoirs,2013,20(1):34-38.
[6] BOWKER K A.Barnett shale gas production,Fort Worth Basin:issues and discussion[J].AAPG Bulletin,2007,91(4):523-533.
[7] 何世明,周俊,邓小刚,等.冀中坳陷潜山内幕油气藏钻井井壁稳定分析[J].科学技术与工程,2016,16(19):185-191.
HE Shiming,ZHOU Jun,DENG Xiaogang,et al.Countermeasures for wellbore stability in drilling procedures of inner buried-hill reservoir in Jizhong Depression[J].Science Technology and Engineering,2016,16(19):185-191.
[8] 蒲军宏,张成,马金凯,等.碳酸盐岩地层井壁稳定性研究[J].西部探矿工程,2015,27(12):25-28.
PU Junhong,ZHANG Cheng,MA Jinkai,et al.Study on wellbore stability of carbonate formations[J].West-China Exploration Engineering,2015,27(12):25-28.
[9] 刘厚彬,崔帅,朱达江,等.硬脆性页岩微细观组构及力学性能研究[J].地下空间与工程学报,2019,15(增刊):34-39.
LIU Houbin,CUI Shuai,ZHU Dajiang,et al.Study on microstructure and mechanical properties of hard brittle shale[J].Chinese Journal of Underground Space and Engineering,2019,15(S):34-39.
[10] 孙松领,李琦,李娟,等.低渗透砂岩储层构造裂缝预测及开启性分析[J].特种油气藏,2007,14(1):30-33.
SUN Songling,LI Qi,LI Juan,et al.Structural fracture prediction and aperture analysis for low permeability sandstone reservoir[J].Special Oil & Gas Reservoirs,2007,14(1):30-33.
[11] 赵向原,胡向阳,肖开华,等.川西彭州地区雷口坡组碳酸盐岩储层裂缝特征及主控因素[J].石油与天然气地质,2018,39(1):30-39.
ZHAO Xiangyuan,HU Xiangyang,XIAO Kaihua,et al.Characteristics and major control factors of natural fractures in carbonate reservoirs of Leikoupo Formation in Pengzhou Area,western Sichuan Basin[J].Oil & Gas Geology,2008,39(1):30-39.
[12] 刘向君,陈一健,肖勇.岩石软弱面产状对井壁稳定性的影响[J].西南石油学院学报,2001,23(6):12-13,20.
LIU Xiangjun,CHEN Yijian,XIAO Yong.Effect of weak plane dip angle and dip azimuth angle on wellbore stability[J].Journal of Southwest Petroleum Institute,2001,23(6):12-13,20.
[13] 丁乙,刘向君,罗平亚,等.硬脆性泥页岩地层井壁稳定性研究[J].中国海上油气,2018,30(1):145-152.
DING Yi,LIU Xiangjun,LUO Pingya,et al.Research on wellbore stability for hard brittle shale[J].China Offshore Oil and Gas,2012,30(1):145-152.
[14] 刘向君,罗平亚.岩石力学与石油工程[M].北京:石油工业出版社,2004:67.
LIU Xiangjun,LUO Pingya.Rock mechanics and petroleum engineering[M].Beijing:Petroleum Industry Press,2004:67.
[15] 韦世明,夏阳,陈勉,等.超深层碳酸盐岩储层孔隙弹性动力学起裂规律[J].石油钻采工艺,2020,42(2):127-132.
WEI Shiming,XIA Yang,CHEN Mian,et al.The fracture initiation laws of ultradeep carbonate reservoirs based on poroelastic dynamics[J].Oil Drilling & Production Technology,2020,42(2):127-132.
[16] 张卫东,于立松,刘晓兰,等.考虑三向应力的弱面岩石强度分析[J].岩石力学与工程学报,2017,36(增刊2):3816-3821.
ZHANG Weidong,YU Lisong,LIU Xiaolan,et al.Analysis of rock strength with weak planes concerning tri-axial stress[J].Chinese Journal of Rock Mechanics and Engineering,2017,36(S2):3816-3821.
[17] 陈勉,赵海峰,金衍,等.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.
CHEN Mian,ZHAO Haifeng,JIN Yan,et al.A discontinuous medium mechanical model for the sidewall stability prediction of coal beds[J].Acta Petrolei Sinica,2013,34(1):145-150.
[18] 刘厚彬,崔帅,孟英峰,等.川西硬脆性页岩力学特征及井壁稳定性研究[J].西南石油大学学报(自然科学版),2019,41(6):60-67.
LIU Houbin,CUI Shuai,MENG Yingfeng,et al.Study on mechanical characteristics and wellbore stability of hard brittle shale in western Sichuan[J].Journal of southwest petroleum university (Science & Technology Edition),2019,41(6):60-67.
[19] 钟志彬,邓荣贵,付小敏,等.含裂隙充填节理岩体的压剪断裂机制研究[J].岩石力学与工程学报,2018,37(增刊):3320-3331.
ZHONG Zhibin,DENG Ronggui,FU Xiaomin,et al.Study on the compression-shear fracture mechanism of infilled jointed rock mass with pre-crack[J].Chinese Journal of Rock Mechanics and Engineering,2018,37(S):3320-3331.
[20] 张磊,许杰,刘海龙,等.层理性地层井壁坍塌失稳规律研究[J].石油机械,2019,47(2):24-32.
ZHANG Lei,XU Jie,LIU Hailong,et al.Research on wellbore collapse of stratification formation[J].China Petroleum Machinery,2019,47(2):24-32.

Options

文章导航

模态框（Modal）标题

摘要

本文引用格式

Abstract

参考文献