夹角断层多段压裂水平井试井求解新方法

刘启国; 徐有杰; 刘义成; 齐生芝

doi:10.21656/1000-0887.380297

夹角断层多段压裂水平井试井求解新方法

doi: 10.21656/1000-0887.380297

¹西南石油大学石油与天然气工程学院, 成都 610500;²中国石油西南油气田公司勘探开发研究院, 成都 610000

基金项目: 国家科技重大专项（2017ZX05009-004;2016ZX05015-003）

详细信息

作者简介:
刘启国（1969—），男，博士，教授(E-mail: liuqg2002@163.com);徐有杰（1990—），男，硕士生(通讯作者. E-mail: xuyoujie920309@163.com).

中图分类号: TE331.1
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- 被引次数: 0
出版历程
- 收稿日期: 2017-11-27
- 修回日期: 2018-01-15
- 刊出日期: 2018-05-15

A New Well Test Analysis Method for Multi-Stage Fractured Horizontal Wells With Angle Faults

¹College of Petroleum Engineering, Southwest Petroleum University, Chengdu 610500, P.R. China;²Research Institute of Petroleum Exploration and Development, PetroChina Southwest Oil & Gasfield Company, Chengdu 610000, P.R.China

Funds: The National Science and Technology Major Project of China（2017ZX05009-004;2016ZX05015-003）

摘要

摘要: 我国东部部分油藏含有发育的封闭断层，而断层对于油气井压力变化特征和相关参数的求取具有很大的影响.基于渗流力学基本原理，首先，利用点源函数基本理论和Laplace积分变换获得拉氏空间无限导流垂直裂缝井井底压力解，结合导流能力函数获得有限导流垂直裂缝井井底压力解；其次，通过镜像反映原理和压降叠加原则获得不同夹角封闭断层的有限导流多段压裂水平井拉氏空间解析解；利用Stehfest数值反演计算实空间井底压力解并绘制压力和压力导数双对数曲线图.研究表明：该典型特征曲线共分为8个流动阶段，在断层反映阶段无因次压力导数呈值为“0.5×360°/θ”的水平线；水平井中心到断层的垂直距离越小，断层反映时间越早，径向流动阶段越容易被边界反映所掩盖；裂缝间距越大，早期裂缝拟径向流特征曲线越明显；裂缝条数越多、导流能力越大，早期无因次压力和压力导数曲线位置越低.通过该模型能够很好地对含有封闭断层边界的油气藏做出准确评价和相关参数的求取.
- 夹角断层 /
- 多段压裂水平井 /
- 镜像反映 /
- 有限导流裂缝 /
- 导流能力函数
Abstract: Closed faults exist in some regions of eastern China, and they have great influence on the pressure characteristics of oil wells. Based on the basic principles of seepage mechanics, firstly, the bottom pressure solution of infinite-conductivity vertical fractured wells in the Laplace space was obtained by means of the basic theory of point source function and the Laplace integral transform. Combined with the conductivity function, the pressure solution of finite-conductivity vertical fractured wells was obtained. Secondly, the solution of multi-stage fractured horizontal wells with different angle faults was obtained with the mirror reflection principle and the pressure drop superposition principle. The pressure solution in the real space was given through the Stehfest numerical inversion, and the typical pressure as well as the pressure-derivative log-log curves were drawn. The results show that, the typical characteristic curve is divided into 8 flow stages, the pressure derivative is a horizontal line of a 0.5×360°/θ in the phase of fault reflection, and the smaller the vertical distance from the horizontal well center to the fault is, because the pressure-derivative curve characteristics of the radial flow are covered by the boundary reflection characteristic curve, the earlier the fault reflection time will be. Moreover, the larger the spacing between adjacent fractures is, the more obvious the early mirror flow characteristic curve will be; the larger the fracture number is, the lower the early pressure and pressure-derivative curve will be; and the larger the bilinear flow stage pressure derivative curve is, the lower conductivity will be. The accurate evaluation of reservoirs with closed fault boundaries and the reliable calculation of relevant parameters can be made through the proposed model.
- angle fault /
- multi-stage fractured horizontal well /
- mirror reflection /
- finite-conductivity fracture /
- conductivity function

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参考文献(20)

[1]	王睿, 董范, 孟召平, 等. 樊庄区块构造对煤层气井产能的控制机理[J]. 中国矿业大学学报, 2014,43(6): 1025-1030.(WANG Rui, DONG Fan, MENG Zhaoping, et al. The controlling mechanism of geological structures on the production of coal bed methane wells in Fanzhuang block[J]. Journal of China University of Mining & Technology,2014,43(6): 1025-1030.(in Chinese))
[2]	史长林, 纪友亮, 陈斌, 等. 复杂断块油田断层封闭性判别: 以大港油田X断块为例[J]. 天然气地球科学, 2009,20(1): 143-147.(SHI Changlin, JI Youliang, CHEN Bin, et al. Diagnostic method of fault sealing in complex block faulted oil field: a case from X block, Dagang oilfield[J]. Natural Gas Geoscience,2009,20(1): 143-147.(in Chinese))
[3]	赵卫蕊, 王杰祥, 王庆, 等. 压裂井油层参数对增产效果的影响分析及应用[J]. 断块油气田, 2007,14(4):63-65.(ZHAO Weirui, WANG Jiexiang, WANG Qing, et al. Influence analysis and application of reservoir parameters from fracturing well on incremental result[J]. Fault-Block Oil & Gas Field,2007,14(4): 63-65.(in Chinese))
[4]	OZKAN E, RAGHAVAN R. New solutions for well-test-analysis problems, part 1: analytical considerations (includes associated papers 28666 and 29213)[J]. Society of Petroleum Engineers Formation Evaluation,1991,6(3): 359-368.
[5]	OZKAN E, RAGHAVAN R. New solutions for well-test-analysis problems, part 2: computational considerations and applications (includes associated papers 18615)[J]. Society of Petroleum Engineers Formation Evaluation,1991,6(3): 369-378.
[6]	HEBER CINCO L, SAMANIEGO V F, DOMINGUEZ A N. Transient pressure behavior for a well with a finite-conductivity vertical fracture[J]. Society of Petroleum Engineers Journal,1978,18(4): 253-264.
[7]	RILEY M F, BRIGHAM W E, HORNE R N. Analytic solutions for elliptical finite-conductivity fractures[J]. Society of Petroleum Engineers Journal,1991: 35-48. DOI: 10.2118/22656-MS.
[8]	王晓冬, 穆立婷. 两任意夹角断层的井壁压力计算方法[J]. 油气井测试,1997,6(2): 10-12.(WANG Xiaodong, MU Liting. Algorithms for pressure transient analysis in the presence of two intercept faults with an arbitrary angle[J].Well Testing,1997,6(2): 10-12.(in Chinese))
[9]	雷刚, 董平川, 饶培玉, 等. 各向异性断块油藏油井压力特征分析[J]. 西南石油大学学报(自然科学版), 2015,37(2): 125-130.(LEI Gang, DONG Pingchuan, RAO Peiyu, et al. Analysis of Pressure characteristics of oil well in anisotropic fault-block oil reservoirs[J].Journal of Southwest Petroleum University (Science & Technology Edition),2015,37(2): 125-130.(in Chinese))
[10]	冯纪成, 周丽莎, 曹脊翔. 断层附近一口无限导流垂直裂缝压裂井试井典型曲线研究[J]. 钻采工艺, 2013,36(3): 42-44.(FENG Jicheng, ZHOU Lisha, CAO Jixiang. Transient pressure analysis of an infinite-conductive vertical fractured well near a fault[J]. Drilling & Production Technology,2013,36(3): 42-44.(in Chinese))
[11]	宋付权, 刘慈群. 单一直线边界油藏中水平井渗流压力动态分析[J]. 石油勘探与开发, 1997,24(4): 47-50.(SONG Fuquan, LIU Ciqun. The transient Pressure analysis of a horizontal well in an unlimited reservoir with a linear boundary[J]. Petroleum Exploration and Development,1997,〖STHZ〗 24(4): 47-50.(in Chinese))
[12]	樊冬艳, 姚军, 孙海, 等. 页岩气藏分段压裂水平井不稳定渗流模型[J]. 中国石油大学学报(自然科学版), 2014,38(5): 116-123.(FAN Dongyan, YAO Jun, SUN Hai, et al. Transient flow model of stage-fractured horizontal wells in shale gas reservoirs[J]. Journal of China University of Petroleum (Edition of Natural Science),2014,38(5): 116-123.(in Chinese))
[13]	刘晓旭, 杨学锋, 陈远林, 等. 页岩气分段压裂水平井渗流机理及试井分析[J]. 天然气工业, 2013,33(12): 77-81.(LIU Xiaoxu, YANG Xuelin, CHEN Yuanlin, et al. Seepage behavior and well testing in horizontal shale gas wells under multi-stage fracking[J]. Natural Gas Industry,2013,33(12): 77-81.(in Chinese))
[14]	尹洪军, 李兴科, 赵二猛, 等. 体积压裂水平井不稳定试井解释研究[J]. 特种油气藏, 2017,24(5): 85-90.(YIN Hongjun, LI Xingke, ZHAO Ermeng, et al. Interpretation of transient well test data in horizontal wells with volumetric fracturing[J]. Special Oil & Gas Reservoirs,2017,24(5): 85-90.(in Chinese))
[15]	赵超, 肖洁, 许正栋, 等. 多段压裂水平井压力动态特征分析[J]. 断块油气田, 2015,22(6): 798-802.(ZHAO Chao, XIAO jie, XU Zhengdong, et al. Dynamical pressure characteristics of multi-stage fractured horizontal well[J]. Fault-Block Oil & Gas Field,2015,22(6): 798-802.(in Chinese))
[16]	段永刚, 杨宇, 陈伟, 等. 压裂水平井多裂缝系统不稳定压力动态特征[J]. 辽宁工程技术大学学报(自然科版), 2009,28(S1): 44-46.(DUAN Yonggang, YANG Yu, CHEN Wei, et al. Pressure behavioral characteristics of multi-fractures system of horizontal well of post-fracturing in gas reservoir[J]. Journal of Liaoning Technical University(Natural Science),2009,28(S1): 44-46.(in Chinese))
[17]	王本成, 贾永禄, 李友全, 等. 多段压裂水平井试井模型求解新方法[J]. 石油学报, 2013,34(6): 1150-1156.(WANG Bencheng, JIA Yonglu, LI Youquan, et al. A new solution of well test model for multistage fractured horizontal wells[J]. Acta Petrolel Sinica,2013,34(6): 1150-1156.(in Chinese))
[18]	李顺初, 任丽, 郑鹏社, 等. 基于应力敏感的天然裂缝性页岩气藏双孔模型解的结构[J]. 应用数学和力学, 2017,38(2): 233-242 (LI Shunchu, REN Li, ZHENG Pengshe, et al. Similar structure of the solution to the dual-porosity model for naturally fractured shale gas reservoirs based on stress sensitivity[J]. Applied Mathematics and Mechanics,2017,38(2): 233-242.(in Chinese))
[19]	王晓冬, 罗万静, 侯晓春, 等. 矩形油藏多段压裂水平井不稳态压力分析[J]. 石油勘探与开发, 2014,41(1): 74-94.(WANG Xiaodong, LUO Wanjing, HOU Xiaochun, et al. Transient pressure analysis of multiple-fractured horizontal wells in boxed reservoirs[J]. Petroleum Exploration and Development,2014,41(1): 74-94.(in Chinese))
[20]	STEHFEST H. Algorithm 368: numerical inversion of Laplace transforms[J].Communication of the ACM,1970,13(1): 47-49

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夹角断层多段压裂水平井试井求解新方法

doi: 10.21656/1000-0887.380297

作者简介:
刘启国（1969—），男，博士，教授(E-mail: liuqg2002@163.com);徐有杰（1990—），男，硕士生(通讯作者. E-mail: xuyoujie920309@163.com).

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A New Well Test Analysis Method for Multi-Stage Fractured Horizontal Wells With Angle Faults

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留言板

夹角断层多段压裂水平井试井求解新方法

doi: 10.21656/1000-0887.380297

作者简介: 刘启国（1969—），男，博士，教授(E-mail: liuqg2002@163.com);徐有杰（1990—），男，硕士生(通讯作者. E-mail: xuyoujie920309@163.com).

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出版历程

A New Well Test Analysis Method for Multi-Stage Fractured Horizontal Wells With Angle Faults

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出版历程

目录

作者简介:
刘启国（1969—），男，博士，教授(E-mail: liuqg2002@163.com);徐有杰（1990—），男，硕士生(通讯作者. E-mail: xuyoujie920309@163.com).