有限导流压裂定向井不稳定压力分析模型

doi:10.7623/syxb201504011

石油学报 ›› 2015, Vol. 36 ›› Issue (4): 496-503.DOI: 10.7623/syxb201504011

有限导流压裂定向井不稳定压力分析模型

贾品, 程林松, 黄世军, 曹仁义, 薛永超

中国石油大学石油工程学院北京 102249

收稿日期:2014-09-28 修回日期:2015-01-06 出版日期:2015-04-25 发布日期:2015-04-04
通讯作者: 贾品,男,1990年2月生,2012年获中国石油大学(北京)石油工程专业学士学位,现为中国石油大学(北京)油气田开发工程专业博士研究生,主要从事油藏工程和渗流理论方面的研究。Email:jiapin1990@163.com
作者简介:贾品,男,1990年2月生,2012年获中国石油大学(北京)石油工程专业学士学位,现为中国石油大学(北京)油气田开发工程专业博士研究生,主要从事油藏工程和渗流理论方面的研究。Email:jiapin1990@163.com
基金资助:
国家自然科学基金项目(No.51174215)资助。

Transient pressure analysis model for finite conductivity fracture directional well

Jia Pin, Cheng Linsong, Huang Shijun, Cao Renyi, Xue Yongchao

College of Petroleum Engineering, China University of Petroleum, Beijing 102249, China

Received:2014-09-28 Revised:2015-01-06 Online:2015-04-25 Published:2015-04-04

摘要/Abstract

摘要：

定向井压裂形成的人工裂缝通常与垂向存在夹角,即形成了倾斜缝。基于不稳定渗流理论,将有限导流倾斜缝的渗流过程分为油藏到裂缝流动和裂缝内部流动。采用Green函数和Newman乘积法表征了油藏到裂缝的流动过程,裂缝内部稳定流动则采用平板渗流理论描述。裂缝离散为若干微元,将油藏到裂缝流动和裂缝内部流动进行耦合,建立了一种新的压裂倾斜缝和油藏耦合的压力半解析模型。分析结果表明:裂缝无因次导流能力较低时,倾斜角对拟表皮影响较大;随无因次导流能力增大,各倾斜角的拟表皮差距趋于一致;而随着储层各向异性的增强,倾斜角的影响会减弱。有限导流倾斜缝也存在双线性流动,但流动结束时间比垂直缝早;由于倾斜角的影响,用垂直缝双线性流动模型来解释倾斜缝的压力动态会得到比实际偏大的裂缝导流能力。现场应用实例进一步证明了模型的正确性与实用性。

关键词: 压裂倾斜缝, 有限导流, 耦合模型, 不稳定渗流, 压力分析

Abstract:

The artificial fissure formed by fracturing of directional well usually has an inclined angle with the vertical direction, thus forming the inclined fissure. According to unsteady fluid flow theory, the flow process of finite-conductivity inclined fissure is divided into reservoir-fissure flow and intra-fissure flow. Green function and Newman product method are used to characterize the reservoir-fissure flow process; the intra-fissure steady flow is described using planar flow theory. The fissure is dispersed to several micro-units. The reservoir-fissure flow and intra-fissure flow are coupled to build a new pressure semi-analytical model based on fracturing inclined fissure and reservoir coupling. The analytical results show that when the dimensionless fissure conductivity is lower, the inclined angle will have a great impact on pseudo-skin; with the increase in dimensionless conductivity, the gaps in pseudo-skin of each inclined angle tend to be consistent; with the enhancement of reservoir anisotropy, the effect of inclined angle will be weakened. Bilinear flow is also observed in finite-conductivity inclined fissure, but the end time is earlier than that of vertical fissure. Due to the impact of inclined angle, the actual fissure conductivity is less than that obtained during interpretation of the pressure state of inclined fissure using the bilinear flow model of vertical fissure. The validity and practicability of the model has been further verified by field example.

Key words: inclined hydraulic fracture, finite conductivity, couple model, transient flow, pressure analysis

中图分类号:

TE353

贾品, 程林松, 黄世军, 曹仁义, 薛永超. 有限导流压裂定向井不稳定压力分析模型[J]. 石油学报, 2015, 36(4): 496-503.

Jia Pin, Cheng Linsong, Huang Shijun, Cao Renyi, Xue Yongchao. Transient pressure analysis model for finite conductivity fracture directional well[J]. Acta Petrolei Sinica, 2015, 36(4): 496-503.

参考文献

[1] Dinh A V,Tiab D.Transient-pressure analysis of a well with an inclined hydraulic fracture using Tiab's direct synthesis technique[R].SPE 120545,2009.
[2] Dinh A V,Tiab D.Transient-pressure analysis of a well with an inclined hydraulic fracture using type curve matching[R].SPE 120540,2009.
[3] Daneshy A A.True and apparent direction of hydraulic fractures[R].SPE 3226,1971.
[4] Daneshy A A.A study of inclined hydraulic fractures[J].SPE Journal,1973,13(2):61-68.
[5] Wright C A.Reorientation of propped refracture treatments in the lost hills field[R].SPE 27896,1994.
[6] Wright C A,Conant R A.Hydraulic fracture reorientation in primary and secondary recovery from low-permeability reservoirs[R].SPE 30484,1995.
[7] Cinco-Ley H.Unsteady-state pressure distributions created by a slanted well or a well with an inclined fracture[D].California:Stanford University,1974.
[8] Cinco-Ley H,Ramey Jr.H J,Miller F G.Unsteady-state pressure distribution created by a well with an inclined fracture[R].SPE 5591,1975.
[9] 王晓冬,张义堂,刘慈群.垂直裂缝井产能及导流能力优化研究[J].石油勘探与开发,2004,31(6):78-81.
Wang Xiaodong,Zhang Yitang,Liu Ciqun.Productivity evaluation and conductivity optimization for vertically fractured wells[J].Petroleum Exploration and Development,2004,31(6):78-81.
[10] 刘慈群.垂直裂缝地层中流体的渗流[J].石油勘探与开发,1987,14(3):69-73.
Liu Ciqun.The flow of fluid through porous media with a vertical fracture[J].Petroleum Exploration and Development,1987,14(3):69-73.
[11] 李军诗,侯建锋,胡永乐,等.压裂水平井不稳定渗流分析[J].石油勘探与开发,2008,35(1):92-96.
Li Junshi,Hou Jianfeng,Hu Yongle,et al.Performance analysis of unsteady porous flow in fractured horizontal wells[J].Petroleum Exploration and Development,2008,35(1):92-96.
[12] 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 Petrolei Sinica,2013,34(6):1150-1156.
[13] Gringarten A C,Ramey Jr.H J.The use of source and green's functions in solving unsteady flow problems in reservoirs[J].Society of Petroleum Engineers Journal,1973,13(5):285-296.
[14] Cinco-Ley H,Samaneigo-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.
[15] 张望明,曾萍.含局部不渗透区的油藏不稳定压力分析——边界元方法[J].石油学报,1993,14(3):68-74.
Zhang Wangming,Zeng Ping.Pressure transient analysis in a reservoir with an impermeable subregion-boundary element method[J].Acta Petrolei Sinica,1993,14(3):68-74.
[16] 何应付,高慧梅,刘先贵,等.变形介质油气藏压力动态分析的边界元方法[J].天然气工业,2008,28(7):87-89.
He Yingfu,Gao Huimei,Liu Xiangui,et al.The boundary element method for pressure transient analysis of deformed media reservoir[J].Natural Gas Industry,2008,28(7):87-89.
[17] 刘青山,段永刚,陈伟,等.用边界元法分析油藏不稳定渗流问题[J].大庆石油地质与开发,2004,23(2):36-37.
Liu Qingshan,Duan Yonggang,Chen Wei,et al.Application of boundary element in unsteady state flow[J].Petroleum Geology & Oilfield Development in Daqing,2004,23(2):36-37.
[18] Cinco-Ley H,Samaniego-V F.Transient pressure analysis for fractured wells[J].Journal of Petroleum Technology,1981,33(9):1749-1766.
[19] 同登科,陈钦雷,宗国洪.有界双重介质分形油藏的精确解及动态特征[J].石油学报,2001,22(3):58-62.
Tong Dengke,Chen Qinlei,Zong Guohong.Exact solution and pressure transient analysis for the flow problem of fluids flow in a bounded fractal reservoir with double porosity[J].Acta Petrolei Sinica,2001,22(3):58-62.
[20] 贾永禄,李允.双孔介质有界地层试井分析模型及样版曲线[J].石油学报,1996,17(4):98-103.
Jia Yonglu,Li Yun.Well test analysis models for finite dual porosity reservoir and their type curves[J].Acta Petrolei Sinica,1996,17(4):98-103.
[21] Lee S T,Brockenbrough J R.A new approximate analytic solution for finite-conductivity vertical fractures[J].SPE Formation Evaluation,1986,1(1):75-88.
[22] 吴明录,姚军,王子胜,等.利用双种群遗传算法进行数值试井自动拟合[J].油气地质与采收率,2007,14(2):81-83.
Wu Minglu,Yao Jun,Wang Zisheng,et al.Numerical well testing auto-matching applying double population genetic algorithm [J].Petroleum Geology and Recovery Efficiency,2007,14(2):81-83.

有限导流压裂定向井不稳定压力分析模型

Transient pressure analysis model for finite conductivity fracture directional well

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