深井超深井井底应力场

doi:10.7623/syxb201104021

石油学报 ›› 2011, Vol. 32 ›› Issue (4): 697-703.DOI: 10.7623/syxb201104021

深井超深井井底应力场

常德玉 1,2 李根生 1 沈忠厚 1 黄中伟 1 田守嶒 1 史怀忠 1 宋先知 1

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中国石油化工集团国际石油工程有限公司北京 100011

收稿日期:2010-09-29 修回日期:2011-03-23 出版日期:2011-07-25 发布日期:2011-09-22
通讯作者: 常德玉
作者简介:常德玉，男，1984年9月生，2005年毕业于青岛农业大学农业机械化及自动化专业，现为中国石油大学（北京）在读博士研究生，主要从事石油工程和高压水射流的研究工作。
基金资助:
国家重点基础研究发展规划（973）项目“深井复杂地层安全高效钻井基础研究”（2010CB226704）资助。

The stress field of bottom hole in deep and ultra-deep wells

CHANG Deyu 1,2 LI Gensheng 1 SHEN Zhonghou 1 HUANG Zhongwei 1 TIAN Shouceng 1 SHI Huaizhong 1 SONG Xianzhi 1

Received:2010-09-29 Revised:2011-03-23 Online:2011-07-25 Published:2011-09-22

摘要/Abstract

摘要：

深井超深井钻井技术对加快我国石油勘探开发进程具有重要意义，深井超深井井底应力场是破岩机理研究进而提高机械钻速的基础。针对井深4500～7000 m时3种不同地应力状态下的井底岩石应力分布规律进行研究，在井底岩石力学分析的基础上，建立了考虑孔隙压力和垂直、水平最大和最小三向地应力差下的流固耦合模型，并采用数值方法进行求解。结果表明，岩石内部孔隙压力以约呈井眼径向距离的–0.055次幂减小；当井深一定时，垂直总地应力为最小地应力时，岩石所受围压最大，为中间主应力时次之，为最大地应力时最小；当地应力状态相同时，随着井深增加，岩石所受围压呈线性增加，导致岩石塑性强度增加，这是深井超深井机械钻速低的主要原因之一。深井超深井井底应力场的定量研究对深井超深井破岩机理研究和提高机械钻速具有重要的理论指导意义。

关键词: 深井超深井, 应力场, 孔隙压力, 流固耦合, 机械钻速

Abstract:

The drilling technology of deep and ultra-deep wells is of great significance in speeding up petroleum exploration and development of China. Study on the stress field of bottom-hole rocks in deep and ultra-deep wells is one of the bases to investigate rock-breaking mechanisms and the enhancement of the rate of penetration (ROP). Here, we examined the stress field distribution of bottom-hole rocks under three different in-situ stress states in wells at depths from 4500 to 7000 meters. On the basis of mechanical analysis of well bottom-hole rocks, a fluid-solid coupling model that considers the pore pressure and differences between the maximal and the minimal values of vertical and horizontal triaxial stress was established, and a numerical method was applied to solve the model. The results indicated that the pore pressure within rocks decreased approximately by the -0.055th power of the borehole radial distance. When the well depth was constant, the confining pressure suffered by rocks decreased from the maximum to the minimum in order of the vertical total in-situ stress equal to the minimum in-situ stress, the intermediate principle stress and the maximum in-situ stress, respectively. When the in-situ stress state was constant, the confining pressure suffered by rocks increased linearly with the increase of well depth, leading to the increase of rock plasticity, which was defined as one of the main reasons why the drilling of deep and ultra-deep wells had a low rate of penetration. Finally, a couple of feasible drilling modes used for deep and ultra-deep wells were summarized. Quantitative studies on the stress field of bottom-hole rocks in deep and ultra-deep wells are of theoretical significance in guiding investigations of rock breaking mechanisms and the enhancement of the rate of penetration.

Key words: deep and ultra-deep well, stress field, pore pressure, fluid-solid coupling, rate of penetration

常德玉李根生沈忠厚黄中伟田守嶒史怀忠宋先知. 深井超深井井底应力场[J]. 石油学报, 2011, 32(4): 697-703.

CHANG Deyu LI Gensheng SHEN Zhonghou HUANG Zhongwei TIAN Shouceng. The stress field of bottom hole in deep and ultra-deep wells[J]. Editorial office of ACTA PETROLEI SINICA, 2011, 32(4): 697-703.

参考文献

[1]沈忠厚.现代钻井技术发展趋势[J].石油勘探与开发,2005,32(1):89-91.

Shen Zhonghou.Development trend of the modern drilling technology[J].Petroleum Exploration and Development,2005,32(1):89-91.[2]李树盛,谭春飞,蔡镜仑.深井大直径井段的钻井问题研究[J].石油学报,1999,20(6):67-72.

Li Shusheng,Tan Chunfei,Cai Jinglun.A study on drilling problems of deep large diameter wellbores [J].Acta Petrolei Sinica,1999,20(6):67-72.

[3]周英操,张书瑞,刘永贵.大庆外围探井钻井速度的影响因素分析[J].石油学报,2007,28(2):113-116.

Zhou Yingcao,Zhang Shurui,Liu Yonggui.Influencing factors of drilling speed in exploratory wells of Daqing peripheral oilfield [J].Acta Petrolei Sinica,2007,28(2):113-116.

[4]曾义金,刘建立.深井超深井钻井技术现状和发展趋势[J].石油钻探技术,2005,33(5):1-5.

Zeng Yijin,Liu Jianli.Technical status and development trend of drilling techniques in deep and ultra-deep wells[J].Petroleum Drilling Techniques,2005,33(5):1-5.

[5]闫铁,刘春天,毕雪亮,等.人工神经网络在大庆深井钻头优选中的应用[J].石油学报,2002,23(4):102-106.

Yan Tie,Liu Chuntian,Bi Xueliang,et al.Application of artificial neural network in optimizing bit technology in Daqing Oilfield [J].Acta Petrolei Sinica,2002,23(4):102-106.

[6]彭烨,沈忠厚,樊胜华,等.基于开挖方法的井底应力场有限元模型[J].石油学报,2006,27(6):133-140.

Peng Ye,Shen Zhonghou,Fan Shenghua,et al.Finite element model for analyzing stress field of bottom hole based on excavating method[J].Acta Petrolei Sinica,2006,27(6):133-140.

[7]刘永贵,王洪英.徐深气田气体钻井破岩机理的初步研究[J].石油学报,2008,29(5):773-776.

Liu Yonggui,Wang Hongying.Initial research on rock-breaking mechanism for gas drilling in Xushen gas field [J].Acta Petrolei Sinica,2008,29(5):773-776.

[8]王敏生,唐波.井底应力场对气体钻井井斜的影响[J].岩土力学,2009,30(8):2436-2441.

Wang Minsheng,Tang Bo.Effects of stress field in bottom hole on borehole deviation during gas drilling [J].Rock and Soil Mechanics,2009,30(8):2436-2441. 

[9]胥永杰.高陡复杂构造地应力提取方法与井漏机理研究[D].南充:西南石油学院,2005.

Xu Yongjie.Study on the formation stress calculation method and well leak mechanism for aloft-steep and complex structure[D].Nanchong:Southwest Petroleum Institute,2005.

[10]汪志明,薛亮.射流式井底增压器水力参数理论模型研究[J].石油学报,2008,29(2):308-312.

Wang Zhiming,Xue Liang.Hydraulic parameter model for design of fluidics down hole boost compressor[J].Acta Petrolei Sinica, 2008,29(2):308-312.

[11]王学杰,李根生,康延军,等.利用水力脉冲空化射流复合钻井技术提高钻速[J].石油学报,2009,30(1):117-120.

Wang Xuejie,Li Gensheng,Kang Yanjun,et al.Improvement of penetration rate with hydraulic pulsating-cavitation jet compound drilling technology[J].Acta Petrolei Sinica,2009,30(1):117-120.

[12]陶兴华.提高深井钻井速度的有效技术方法[J].石油钻采工艺,2001,23(5):4-8.

Tao Xinghua. Effective measures for improving the penetration rate of deep well[J].Oil Drilling & Production Technology,2001,23(5):4-8.

[13]马开华,刘修善.深井超深井钻井新技术研究与应用[M].北京:中国石化出版社,2005:97-101.

Ma Kaihua,Liu Xiushan.Research and application of the deep and ultra-deep new drilling technology[M].Beijing:China Petrochemical Press,2005:97-101.

[14]周英操,王广新,翟洪军,等.欠平衡钻井技术在大庆油田卫深5井中的应用[J].石油学报,2003,24(6):90-93.

Zhou Yingcao,Wang Guangxin,Zhai Hongjun,et al.Application of under-balanced drilling technology in Weishen-5 Well of Daqing oilfield [J].Acta Petrolei Sinica,2003,24(6):90-93.

[15]张绍槐.深井、超深井和复杂结构井垂直钻井技术[J].石油钻探技术,2005,33(5):11-15.

Zhang Shaohuai.Vertical drilling technologies in deep,ultra-deep,and complex structure wells [J].Petroleum Drilling Techniques, 2005,33(5):11-15.

深井超深井井底应力场

The stress field of bottom hole in deep and ultra-deep wells

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

[1]	贾善坡, 温曹轩, 付晓飞, 宋文礼, 张玥, 仲国生, 史集建. 气藏型储气库盖层应力场演化规律解析[J]. 石油学报, 2023, 44(6): 983-999.
[2]	廖华林, 王华健, 牛继磊, 魏俊, 牛文龙, 刘建胜. 高压水射流井底切槽应力卸载特性[J]. 石油学报, 2022, 43(9): 1325-1333.
[3]	吴林, 朱明, 冯兴强, 冀冬生, 周磊, 刘圣鑫, 张林炎, 谭元隆, 钱竹良, 杨珍. 准噶尔盆地四棵树凹陷构造应力场与构造变形解析[J]. 石油学报, 2022, 43(4): 494-506.
[4]	周已, 唐艺凤, 蒋阳, 胡家豪, 黄毓兴. 高速牙轮钻头螺旋组合密封流固耦合仿真及试验[J]. 石油学报, 2022, 43(4): 558-570.
[5]	路保平, 王志战, 张元春. 碳酸盐岩孔隙压力预监测理论与方法进展[J]. 石油学报, 2022, 43(4): 571-580.
[6]	李玉伟, 彭根博, 陈勉, 张军, 魏建光, 杨春光. CO₂泡沫压裂井筒气-液-固三相流动模型[J]. 石油学报, 2022, 43(3): 386-398.
[7]	李勇, 纪宏飞, 邢鹏举, 苏义脑, 刘硕琼, 魏风奇. 气井井筒温度场及温度应力场的理论解[J]. 石油学报, 2021, 42(1): 84-94.
[8]	黄中伟, 张世昆, 李根生, 杨睿月, 武晓光, 张宏源, Kamy Sepehrnoori. 液氮磨料射流破碎高温花岗岩机理[J]. 石油学报, 2020, 41(5): 604-614.
[9]	徐加祥, 丁云宏, 杨立峰, 刘哲, 高睿, 王臻. 压裂支撑剂在迂曲微裂缝中输送与分布规律[J]. 石油学报, 2019, 40(8): 965-974.
[10]	杨龑栋, 廖华林, 牛继磊, 汪振, 张晨. 冲击振动钻井工具流固耦合模拟试验[J]. 石油学报, 2019, 40(6): 734-739.
[11]	田家林, 杨应林, 朱志, 刘强, 肖新启, 张金龙, 李居瑞. 基于旋冲螺杆提速器的井下动力特性[J]. 石油学报, 2019, 40(2): 224-231.
[12]	杨兆中, 刘云锐, 张平, 李小刚, 易良平. 煤层气直井地层破裂压力计算模型[J]. 石油学报, 2018, 39(5): 578-586.
[13]	周大伟, 张广清, 刘志斌, 董昊然. 致密砂岩多段分簇压裂中孔隙压力场对多裂缝扩展的影响[J]. 石油学报, 2017, 38(7): 830-839.
[14]	徐春露, 孙建孟, 董旭, 赖富强. 页岩气储层孔隙压力测井预测新方法[J]. 石油学报, 2017, 38(6): 666-676.
[15]	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.