基于非线性反演的井壁稳定随钻预测方法

吴超; 刘建华; 张东清; 王磊

doi:10.11779/CJGE201510009

基于非线性反演的井壁稳定随钻预测方法 English Version

中国石油化工股份有限公司石油工程技术研究院，北京 100101

基金项目: 国家科技重大专项专题项目（2011ZX05005-006-001）

详细信息

作者简介:
吴超（1976- ），男，博士，高级工程师，目前主要从事油气井岩石力学等方面的研究工作。E-mail: wuchao9138@163.com。

中图分类号: A
计量
- 文章访问数: 388
- HTML全文浏览量: 1
- PDF下载量: 277
出版历程
- 收稿日期: 2015-01-14
- 发布日期: 2015-10-19

Predicting borehole stability while drilling based on nonlinear inversion

SINOPEC Research Institute of Petroleum Engineering, Beijing 100101, China

摘要

摘要: 常规井壁稳定预测方法计算量大、操作繁琐、适用范围有限，严重影响其实钻应用效果。通过考察声波速度、地震记录及井壁稳定参数之间的定量关系，建立起利用地震资料直接反演孔隙压力、地应力、岩石强度的模型。根据反演模型的非线性特征，结合井壁稳定参数的地质统计特性，运用随机地震反演方法预测待钻地层的孔隙压力、地应力、岩石强度，并根据反演结果进一步预测井壁稳定性。在实钻过程中，利用录井资料的实时分析和井壁稳定参数的分层地质统计模型，对钻头前方地层的井壁稳定性进行随钻预测。在川东北元坝气田的应用情况表明，本方法的综合性能相比常规方法有明显提高，具有较强的随钻预测能力。
- 井壁稳定 /
- 随钻预测 /
- 地震资料 /
- 非线性 /
- 随机反演
Abstract: The conventional borehole stability prediction methods are characterized by a large amount of calculation, complex operation and limited applicability, which can seriously affect real time application of the technology. Through intensive studies on the quantitative relationships between acoustic velocity, seismic data and borehole stability parameters, the direct seismic inversion model for pore pressure, in-situ stress and rock strength is established. Based on the nonlinear characteristics of the inversion model as well as the geological statistics features of borehole stability parameters, pore pressure, in-situ stress and rock strength of the formation to be drilled can be predicted by employing the stochastic inversion method so as to further forecast borehole stability. In actual drilling, the real-time geological logging data and layered statistical mode of borehole stability parameters can be used to predict borehole stability of the formation ahead of bit while drilling. The practical application of the proposed method in Yuanba Gas Field of Northeast Sichuan shows that the proposed method possesses strong ability of prediction while drilling and its comprehensive performance is significantly improved compared with the conventional methods.
- borehole stability /
- prediction while drilling /
- seismic data /
- nonlinearity /
- stochastic inversion

HTML全文

参考文献(25)

[1]	AADNOY B S, ANGELL-OLSEN F. Some effects of ellipticity on the fracturing and collapse behavior of a borehole[J]. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1995, 32(6): 621-627.
[2]	BELL J S. Practical methods for estimating in situ stresses for borehole stability applications in sedimentary basins[J]. Journal of Petroleum Science and Engineering, 2003, 38(3/4): 111-119.
[3]	STJERN G, AGLE A, HORSRUD P. Local rock mechanical knowledge improves drilling performance in fractured formations at the Heidrun field[J]. Journal of Petroleum Science and Engineering, 2003, 38(3/4): 83-96.
[4]	AADNOY B S, ONG S, Introduction to special issue on borehole stability[J]. Journal of Petroleum Science and Engineering, 2003, 38(3/4): 79-82.
[5]	ZHANG Jin-cai. Borehole stability analysis accounting for anisotropies in drilling to weak bedding planes[J]. International Journal of Rock Mechanics and Mining Sciences, 2013, 60: 160-170.
[6]	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 Xu-dong. Study on prediction for borehole stability before drilling[J]. Acta Petrolei Sinica, 2001, 22(3): 96-99. (in Chinese))
[7]	金衍, 陈勉, 杨小奇. 利用层速度钻前预测安全泥浆密度窗口[J]. 岩石力学与工程学报, 2004, 23(14): 2430-2433. (JIN Yan, CHEN Mian, YANG Xiao-qi. Prediction of safe mud density window by interval velocity before drilling[J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 23(14): 2430-2433. (in Chinese))
[8]	金衍, 陈勉, 吴超. 探井二开以下地层井壁稳定性钻前预测方法[J]. 石油勘探与开发, 2008, 35(6): 742-745. (JIN Yan, CHEN Mian, WU Chao. Borehole stability prediction before drilling for formations under the second section in an exploration well[J]. Petroleum Exploration and Development. 2008, 35(6): 742-745. (in Chinese))
[9]	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. (in Chinese))
[10]	吴超, 陈勉, 金衍. 利用地震属性钻前预测井壁稳定性[J]. 石油钻探技术, 2006, 34(3): 96-99. (WU Chao, CHEN Mian, JIN Yan. Predicting borehole stability before drilling using seismic attributes[J]. Petroleum Drilling Techniques, 2006, 34(3): 96-99. (in Chinese))
[11]	吴超, 陈勉, 金衍. 利用地震分形属性钻前预测安全钻井液密度范围[J]. 钻井液与完井液, 2006, 23(4): 32-34. (WU Chao, CHEN Mian, JIN Yan. Predicting safe drilling fluid density range by seismic fractal attributes[J]. Drilling Fluid and Completion Fluid, 2006, 23(4): 32-34. (in Chinese))
[12]	慈建发. 钻前井壁力学稳定性研究[D]. 南充: 西南石油学院, 2005. (CI Jian-fa. Stuay on borehole mechanical stability before drilling[D]. Nanchong: Southwest Petroleum Institute, 2005. (in Chinese))
[13]	吴超, 陈勉, 金衍. 利用地震反演技术钻前预测井壁稳定性[J]. 石油钻采工艺, 2006, 28(2): 18-20. (WU Chao, CHEN Mian, JIN Yan. Prediction borehole stability before drilling by seismic inversion[J]. Oil Drilling and Production Technology, 2006, 28(2): 18-20. (in Chinese))
[14]	WU Chao, CHEN Mian, JIN Yan. A prediction method of borehole stability based on seismic attribute technology[J]. Journal of Petroleum Science and Engineering, 2009, 65(3/4): 208-216.
[15]	吴超, 陈勉, 金衍. 井壁稳定实时预测新方法[J]. 石油勘探与开发, 2008, 35(1): 80-84. (WU Chao, CHEN Mian, JIN Yan. Real-time prediction method of borehole stability[J]. Petroleum Exploration and Development, 2008, 35(1): 80-84. (in Chinese))
[16]	吴超, 陈勉, 金衍. 基于地震属性技术的井壁稳定随钻预测新方法[J]. 中国石油大学学报, 2007, 31(6): 141-146. (WU Chao, CHEN Mian, JIN Yan. The prediction model of borehole stability based on seismic attribute technology[J]. Journal of China University of Petroleum (Edition of Natural Science), 2007, 31(6): 141-146. (in Chinese))
[17]	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. (ZHAO Hai-feng, CHEN Mian. Real-time prediction of borehole stability based on actual drilling data[J]. Acta Petrolei Sinica, 2011, 32(2): 324-328. (in Chinese))
[18]	HAN D H, NUR A, MORGAN D. Effect of porosity and clay content on wave velocities in sandstone[J]. Geophysics, 1986, 51(11): 2093-2107.
[19]	EBERHART-PHILLIPS D, HAN D H, ZOBACK M D. Empirical relationships among seismic velocity, effective pressure, porosity and clay content in sandstone[J]. Geophysics, 1989, 54(1): 82-89.
[20]	王德人. 非线性方程组解法与最优化方法[M]. 北京: 高等教育出版社, 1979. (WANG De-ren. Solution of nonlinear equations and optimization method[M]. Beijing: Higher Education Press, 1979. (in Chinese))
[21]	吴胜和, 金振奎. 储层建模[M]. 北京: 石油工业出版社, 1999. (WU Sheng-he, JIN Zhen-kui. Reservoir modeling[M]. Beijing: Petroleum Industry Press, 1999. (in Chinese))
[22]	黄捍东, 张如伟, 魏世平. 地震非线性随机反演方法在陆相薄砂岩储层预测中的应用[J]. 石油学报, 2009, 30(3): 386-390. (HUANG Han-dong, ZHANG Ru-wei, WEI Shi-ping. Research on application of seismic nonlinear random inversion to reservoir in the thin sandstone in the continental deposits[J]. Acta Petrolei Sinica, 2009, 30(3): 386-390. (in Chinese))
[23]	侯景儒, 尹镇南. 实用地质统计学[M]. 北京: 地质出版社, 1998. (HOU Jing-ru, YIN Zhen-nan. Practical geostatistics[M]. Beijing: Geological Publishing House, 1998. (in Chinese))
[24]	陈勉, 金衍, 张广清. 石油工程岩石力学[M]. 北京: 科学出版社, 2008. (CHEN Mian, JIN Yan, ZHANG Guang-ying. Rock mechanics in petroleum engineering[M]. Beijing: Science Press, 2008. (in Chinese))
[25]	楼一珊, 金业权. 岩石力学与石油工程[M]. 北京: 石油工业出版社, 2006. (LOU Yi-shan, JIN Ye-quan. Rock mechanics and petroleum engineering[M]. Beijing: Petroleum Industry Press, 2006. (in Chinese))