Rate Transient Analysis for Multistage Fractured Horizontal Well in Tight Oil Reservoirs considering Stimulated Reservoir Volume

A mathematical model of multistage fractured horizontal well (MsFHW) considering stimulated reservoir volume (SRV) was presented for tight oil reservoirs. Both inner and outer regions were assumed as single porosity media but had different formation parameters. Laplace transformation method, point source function integration method, superposition principle, Stehfest numerical algorithm, and Duhamel’s theorem were used comprehensively to obtain the semianalytical solution. Different flow regimes were divided based on pressure transient analysis (PTA) curves. According to rate transient analysis (RTA), the effects of related parameters such as SRV radius, storativity ratio, mobility ratio, fracture number, fracture half-length, and fracture spacing were analyzed. The presented model and obtained results in this paper enrich the performance analysis models of MsFHW considering SRV.

[1]  Yong Tang,et al.  Formation conditions and exploration potential of tight oil in the Permian saline lacustrine dolomitic rock, Junggar Basin, NW China , 2012 .

[2]  Louis Mattar,et al.  Analytical Model for History Matching and Forecasting Production in Multifrac Composite Systems , 2012 .

[3]  Xinwei Liao,et al.  A study on development effect of horizontal well with SRV in unconventional tight oil reservoir , 2014 .

[4]  Lei Xu,et al.  Influences of feldspars on the storage and permeability conditions in tight oil reservoirs: A case study of Chang-6 group, Ordos Basin , 2013 .

[5]  Louis Mattar,et al.  Practical Analytical Model To Simulate Production of Horizontal Wells With Branch Fractures , 2012 .

[6]  Rajagopal Raghavan,et al.  Effect of Discontinuous Microfractures on Ultratight Matrix Permeability of a Dual-Porosity Medium , 2012 .

[7]  Yongfeng Zhang,et al.  Unconventional hydrocarbon resources in China and the prospect of exploration and development , 2012 .

[8]  Yulong Zhao,et al.  Performance of fractured horizontal well with stimulated reservoir volume in unconventional gas reservoir , 2014 .

[9]  Michael J. Mayerhofer,et al.  What Is Stimulated Reservoir Volume , 2010 .

[10]  Michael J. Mayerhofer,et al.  Integration of Microseismic-Fracture-Mapping Results With Numerical Fracture Network Production Modeling in the Barnett Shale , 2006 .

[11]  R. Raghavan,et al.  New Solutions for Well-Test-Analysis Problems: Part 2 Computational Considerations and Applications , 1991 .

[12]  A. V. Everdingen,et al.  The Application of the Laplace Transformation to Flow Problems in Reservoirs , 1949 .

[13]  Lie-hui Zhang,et al.  A New Well Test Model for a Two-Zone Linear Composite Reservoir with Varied Thicknesses , 2010 .

[14]  Jingjing Guo,et al.  Pressure Transient Analysis for Multi-stage Fractured Horizontal Wells in Shale Gas Reservoirs , 2012 .

[15]  Rajagopal Raghavan,et al.  Comparison of Fractured Horizontal-Well Performance in Conventional and Unconventional Reservoirs , 2009 .

[16]  D. T. Snow,et al.  Anisotropie Permeability of Fractured Media , 1969 .

[17]  Obinna Ezulike,et al.  Horizontal well pressure transient analysis in anisotropic composite reservoirs—A three dimensional semi-analytical approach , 2012 .

[18]  Wang Mingjian,et al.  Upper Palaeozoic gas accumulations of the Yimeng Uplift, Ordos Basin , 2011 .

[19]  D. T. Snow.  ROCK FRACTURE SPACINGS, OPENINGS, AND POROSITIES , 1968 .

[20]  M. Ahmadi,et al.  Production Decline and Numerical Simulation Model Analysis of the Eagle Ford Shale Play , 2013 .

[21]  Philip H. Nelson,et al.  Pore-throat sizes in sandstones, tight sandstones, and shales , 2009 .

[22]  Jinzhou Zhao,et al.  “Triple porosity” modeling of transient well test and rate decline analysis for multi-fractured horizontal well in shale gas reservoirs , 2013 .

[23]  R. Raghavan,et al.  New Solutions for Well-Test-Analysis Problems: Part 1-Analytical Considerations(includes associated papers 28666 and 29213 ) , 1991 .

[24]  Erdal Ozkan,et al.  New Solutions for Well-Test-Analysis Problems: Part III-Additional Algorithms , 1994 .

[25]  Arieh Iserles,et al.  A First Course in the Numerical Analysis of Differential Equations: The diffusion equation , 2008 .

[26]  Christopher R. Clarkson,et al.  Production data analysis of unconventional gas wells: Review of theory and best practices , 2013 .

[27]  Hanxiang Wang,et al.  Study of tight oil reservoir flow regimes in different treated horizontal well , 2015 .

[28]  Lucas W. Bazan,et al.  A Discrete Fracture Network Model for Hydraulically Induced Fractures - Theory, Parametric and Case Studies , 2011 .

[29]  Rajagopal Raghavan,et al.  Practical Solutions for Pressure-Transient Responses of Fractured Horizontal Wells in Unconventional Shale Reservoirs , 2011 .

[30]  John W. Lee,et al.  A Comprehensive Application of a Composite Reservoir Model to Pressure-Transient Analysis , 1989 .

[31]  Rajagopal Raghavan,et al.  Comparison of Fractured-Horizontal-Well Performance in Tight Sand and Shale Reservoirs , 2011 .

[32]  Sarath Pavan Ketineni.  Analysis of Production Decline Characteristics of a Multistage Hydraulically Fractured Horizontal Well in a Naturally Fractured Reservoir , 2012 .

[33]  Haitao Wang,et al.  Performance of multiple fractured horizontal wells in shale gas reservoirs with consideration of multiple mechanisms , 2014 .