Computational Methods for Multiphase Flows in Porous Media by Zhangxin Chen

By Zhangxin Chen

This e-book deals a basic and functional creation to using computational tools, fairly finite aspect tools, within the simulation of fluid flows in porous media. it's the first booklet to hide a large choice of flows, together with single-phase, two-phase, black oil, unstable, compositional, nonisothermal, and chemical compositional flows in either usual porous and fractured porous media. additionally, more than a few computational equipment are used, and benchmark difficulties of 9 comparative resolution tasks geared up by way of the Society of Petroleum Engineers are awarded for the 1st time in ebook shape. Computational equipment for Multiphase Flows in Porous Media experiences multiphase circulate equations and computational how to introduce easy terminologies and notation. a radical dialogue of functional facets of the topic is gifted in a constant demeanour, and the extent of remedy is rigorous with out being unnecessarily summary. each one bankruptcy ends with bibliographic info and routines. This booklet can be utilized as a textbook for graduate or complicated undergraduate scholars in geology, petroleum engineering, and utilized arithmetic, and as a reference e-book for execs in those fields, in addition to scientists operating within the sector of petroleum reservoir simulation. it may well even be used as a instruction manual for workers within the oil who want a uncomplicated realizing of modeling and computational process ideas and through researchers in hydrology, environmental remediation, and a few components of organic tissue modeling. Calculus, physics, and a few acquaintance with partial differential equations and straightforward matrix algebra are valuable necessities. record of Figures; record of Tables; Preface; bankruptcy 1: advent; bankruptcy 2: movement and delivery Equations; bankruptcy three: Rock and Fluid houses; bankruptcy four: Numerical equipment; bankruptcy five: answer of Linear platforms; bankruptcy 6: unmarried part stream; bankruptcy 7: Two-Phase stream; bankruptcy eight: The Black Oil version; bankruptcy nine: The Compositional version; bankruptcy 10: Nonisothermal movement; bankruptcy eleven: Chemical Flooding; bankruptcy 12: Flows in Fractured Porous Media; bankruptcy thirteen: Welling Modeling; bankruptcy 14: particular issues; bankruptcy 15: Nomenclature; bankruptcy sixteen: devices; Bibliography; Index.

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36) with a. — w, we have a saturation equation for 26 Chapter 2. Flow and Transport Equations Classification of differential equations There are basically three types of second-order partial differential equations: elliptic, parabolic, and hyperbolic. We must be able to distinguish among these types when numerical methods for their solution are devised. If two independent variables (either (jci, X2) or (x\, t ) ) are considered, then secondorder partial differential equations have the form, with x — x\, This equation is (1) elliptic if ab > 0, (2) parabolic if ab = 0, or (3) hyperbolic if ab < 0.

To recover part of the remaining oil, a fluid (usually water) is injected into some wells (injection wells) while oil is produced through other wells (production wells). This process serves to maintain high reservoir pressure and flow rates. It also displaces some of the oil and pushes it toward the production wells. This stage of oil recovery is called secondary recovery (or water flooding). In the secondary recovery, if the reservoir pressure is above the bubble point pressure of the oil phase, there is two-phase immiscible flow, one phase being water and the other 1 2 Chapter 1.

4). , 1960). 11 and Chapter 12. , 20 Chapter 2. Flow and Transport Equations With the definition of qmf, we now establish a boundary condition on the surface of each matrix block in a general fashion. Gravitational forces have a special effect on this condition. Moreover, pressure gradient effects must be treated on the same footing as the gravitational effects. 7) as a function of p. 33) unless the rock and fluid are incompressible. In that case, set 4>° = 0. For the model described, the highly permeable fracture system rapidly comes into equilibrium on the fracture spacing scale locally.

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