天然气开发

页岩凝析气井产能预测的三线性流模型

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  • 1.中国石油大学石油工程学院,北京  102249;2.中海油研究总院,北京  100027
吴永辉(1991-),男,重庆开县人,博士研究生,主要从事油气渗流理论与应用相关研究.E-mail:wuyonghuijr@gmail.com.

收稿日期: 2017-06-20

  修回日期: 2017-09-16

  网络出版日期: 2017-11-10

基金资助

国家科技重大专项“页岩气渗流规律与气藏工程方法”(编号:2017ZX05037001);中海石油(中国)有限公司综合科研项目“海外页岩油气产能评价技术与方法研究”(编号:YXKY-2016-ZY-03)联合资助.

A tri-linear model for production prediction in retrograde shale gas reservoirs

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  •  1.College of Petroleum Engineering,China University of Petroleum,Beijing 102249,China;2.CNOOC Research Institute,Beijing 100027,China

Received date: 2017-06-20

  Revised date: 2017-09-16

  Online published: 2017-11-10

摘要

页岩凝析气井的产能预测须同时考虑复杂缝网改造体和油气两相流特征。基于三线性流模型表征压裂改造体,考虑流体相变和相渗,并用Langmuir等温吸附模型表征页岩基质中气体的吸附解吸,建立了页岩凝析气井产能预测数学模型。通过模型的线性化处理,结合流动物质平衡方法,获得了模型的半解析解。运用数值模拟结果和矿场生产数据验证了模型的准确性和实用性。结果表明:①通过饱和度和压力相关参数的显隐式处理,并结合流动物质平衡方法可以有效地将数学模型线性化;②所建立的油气两相产量预测半解析方法误差小,可运用于矿场实际;③相同条件下,页岩凝析气的流动能力比单相页岩气更弱,合理缝网参数对提高油气两相产能至关重要。
 

本文引用格式

吴永辉,程林松,黄世军,白玉湖,徐兵祥,丁冠阳 . 页岩凝析气井产能预测的三线性流模型[J]. 天然气地球科学, 2017 , 28(11) : 1745 -1754 . DOI: 10.11764/j.issn.1672-1926.2017.09.009

Abstract

In this paper,a tri-linear model is used to make production forecasts for retrograde shale gas wells after hydraulic fracturing.Gas desorption,phase behavior and relative permeability of oil and gas are incorporated in it.Because of nonlinearity of mathematical model,pressure relative parameters are handled implicitly with pseudo-pressure and saturation relative parameters are handled explicitly.A flowing material balance method is proposed in this paper to obtain a semi-analytical solution of the model.By comparing the semi-analytical solution to the solution of commercial numerical simulator and field production data from a retrograde shale gas well located in Eagle Ford play,the accuracy and practicability of the proposed semi-analytical method is validated.The results show that the mathematical model can be linearized with the semi-analytical model.Under the same condition,the flow ability of retrograde shale gas is weaker than that of single-phase,fracturing stages should be more;the fracture length reflects the stimulated reservoir volume,increasing fracture length can improve the reserves of the well;secondary fracture density and permeability have a large effect on production,it is necessary to increase the complexity and conductivity of the stimulated reservoir.
 

参考文献

[1]Khoshghadam M,Khanal A,Lee W J.Impact of fluid,rock and hydraulic fracture properties on reservoir performance in Liquid-Rich shale oil reservoirs[C]//Society of Petroleum Engineers.Unconventional Resources Technology Conference.San Antonio:Society of Petroleum Engineers,2015.
[2]Zou Caineng,Zhang Guosheng,Yang Zhi,et al.Geological concepts,characteristics,resource potential and key techniques of unconventional hydrocarbon:On unconventional petroleum geology[J].Petroleum Exploration and Development,201,40(4):385-399.[邹才能,张国生,杨智,等.非常规油气概念、特征、潜力及技术——兼论非常规油气地质学[J].石油勘探与开发,201,40(4):385-399.]
[3]Jiang Zaixing,Zhang Wenzhao,Liang Chao,et al.Characteristics and evaluation elements of shale oil reservoirs[J].Acta Petrolei Sinica,2014,35(1):184-196.[姜在兴,张文昭,梁超,等.页岩油储层基本特征及评价要素[J].石油学报,2014,35(1):184-196.]
[4]Zhang Jinchuan,Lin Lamei,Li Yuxi,et al.Classification and evaluation of shale oil[J].Earth Science Frontiers,201,19(5):322-331.[张金川,林腊梅,李玉喜,等.页岩油分类与评价[J].地学前缘,201,19(5):322-331.]
[5]Bello R O,Wattenbarger R A.Modelling and analysis of shale gas production with a skin effect[J].Journal of Canadian Petroleum Technology,201,49(12):37-48.
[6]Brown M L,Ozkan E,Raghavan R S,et al.Practical solutions for pressure-transient responses of fractured horizontal wells in unconventional shale reservoirs[J].SPE Reservoir Evaluation & Engineering,201,14(6):663-676.
[7]Brohi I G,Pooladi-Darvish M,Aguilera R.Modeling fractured horizontal wells as dual porosity composite reservoirs-application to tight gas,shale gas and tight oil cases[C]//Society of Petroleum Engineers.SPE Western North American Region Meeting.Anchorage:Society of Petroleum Engineers,2011.
[8]Al-Ahmadi H A,Wattenbarger R A.Triple-porosity models:One further step towards capturing fractured reservoirs heterogeneity[C]//Society of Petroleum Engineers.SPE/DGS Saudi Arabia Section Technical Symposium and Exhibition.Al-Khobar:Society of Petroleum Engineers,2011.
[9]Stalgorova K,Mattar L.Analyticalmodel for unconventional multifractured composite systems[J].SPE Reservoir Evaluation & Engineering,201,16(3):246-256.
[10]Xie Xingli,Luo Kai,Song Wenjie.A novel equation for modeling gas condensate well deliverability[J].Acta Petrolei Sinica,200,22(3):36-42.[谢兴礼,罗凯,宋文杰.凝析气新的产能方程研究[J].石油学报,200,22(3):36-42.]
[11]Shi Zhiliang,Li Xiangfang,Zhu Weiyao,et al.Mathematical model for condensate gas and fluid flow[J].Petroleum Exploration and Development,2005,32(3):109-112.[石志良,李相方,朱维耀,等.凝析气液复杂渗流数学模型[J].石油勘探与开发,2005,32(3):109-112.]
[12]Zhao Zigang,Zhao Tianfeng,Zheng Wei.A method for defining condensate gas reservoir’s phase state characteristic and predicting gas well optimum output[J].Acta Petrolei Sinica,200,22(2):49-55.[赵子刚,赵天奉,郑威.确定凝析气藏相态特征和气井产量预测的方法[J].石油学报,200,22(2):49-55.]
[13]Behmanesh H,Hamdi H,Clarkson C R.Production data analysis of tight gas condensate reservoirs[J].Journal of Natural Gas Science & Engineering,2015,22(3):22-34.
[14]Zhang M,Ayala L F.Analytical study of constant gas-oil-ratio behavior as an infinite-acting effect in unconventional multiphase reservoir systems[J].SPE Journal,2017,22(1):289-299.
[15]Tabatabaie S H,Pooladi-Darvish M.Multiphase linear flow in tight oil reservoirs[J].SPE Reservoir Evaluation & Engineering,2017,20(1):184-196.
[16]Clarkson C R,Qanbari F.History-matching and forecasting tight gas condensate and oil wells using the dynamic drainage area concept[C]//Society of Petroleum Engineers.SPE/CSUR Unconventional Resources Conference.Calgary:Society of Petroleum Engineers,2015.
[17]Clarkson C R,Qanbari F.An approximate semianalytical multiphase forecasting method for multifractured tight light-oil wells with complex fracture geometry[J].Journal of Canadian Petroleum Technology,2015,54(6):489-508.
[18]Nobakht M,Clarkson C R,Kaviani D.New type curves for analyzing horizontal well with multiple fractures in shale gas reservoirs[J].Journal of Natural Gas Science & Engineering,201,10(1):99-112.
[19]Wu Y,Cheng L,Huang S,et al.A practical method for production data analysis from multistage fractured horizontal wells in shale gas reservoirs[J].Fuel,2016,186:821-829.
[20]Pruess K,Narasimhan T N.Practical method for modeling fluid and heat flow in fractured porous media[J].Society of Petroleum Engineers Journal,1985,25(1):14-26.
[21]Wattenbarger R A,El-Banbi A H,Villegas M E,et al.Production analysis of linear flow into fractured tight gas wells[C]//Society of Petroleum Engineers.SPE Rocky Mountain Regiona/Low-Permeability Reservoirs Sympo-Sium.Colorado:Society of Petroleum Engineers,1998.
[22]Stehfest H.Algorithm 368:Numerical inversion of Laplace transforms[J].Communications of the Acm,1970,13(1):47-49.

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