Impact of natural convection and diffusion on variation of oil composition through a fractured model

Papi, Ali; Mohebbi, Ali; Kazemzadeh, Yousef; Eshraghi, Seyed Ehsan

doi:10.24200/sci.2016.3991

Cited by 2 publications

(2 citation statements)

References 15 publications

(31 reference statements)

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“…Papi et al conducted research on the effect of natural displacement and diffusion on reservoir oil composition in a matrix–fracture system. The governing equations are solved numerically using MATLAB.…”

Section: Investigations On Miscible Gas Injection In the Matrix–fract...mentioning

confidence: 99%

“…Another future work can be to provide and introduce an efficient and accurate laboratory method for estimating the MMP in a matrix−fracture system. Using the methods mentioned in section 4 of this review, the MCD 131 CO 2 sandstone simulation whole core Zhang et al 129 CO 2 sandstone experimental core plug fractured core plug Iraji et al 122 CO 2 carbonate experimental whole core matrix−fracture Papi et al 132 simulation Parvazdavani et al 120 CO 2 sandstone experimental core plug fractured core plug Ding et al 123 CO method can only be used for this purpose, which, of course, is not an accurate method and needs some modification. In addition, a suitable theoretical model for modeling and estimating the MMP in fractured reservoirs has not been proposed thus far.…”

Section: Challenges and Perspectivesmentioning

confidence: 99%

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Mini Review of Miscible Condition Evaluation and Experimental Methods of Gas Miscible Injection in Conventional and Fractured Reservoirs

2021

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Nowadays, one of the most efficient ways of enhanced oil recovery (EOR) is gas miscible injection (GMI). In GMI, minimum miscible pressure (MMP) is the most substantial parameter. The MMP can be estimated by different methods, such as laboratory methods, using the equation of states (EOS), empirical correlations, mathematical models, and artificial intelligence. Among these, laboratory methods of estimating MMP comprise slim tube displacement (STD), rising bubble apparatus (RBA), vanishing interfacial tension (VIT), X-ray computerized tomography (CT), fast fluorescence-based microfluidic (FFBM) method, magnetic resonance imaging (MRI), sonic response method (SRM), rapid pressure increase (RPI), oil droplet volume measurement (ODVM), and pressure–composition diagrams (PCDs), all of which are described in detail in this paper. Furthermore, experimental investigations performed using the mentioned laboratory methods have been presented. On the other hand, to perform miscible injection experiments in the matrix–fracture system, there are methods, such as fractured core plug (FCP), matrix–fracture system (MFS), modified core holder (MCH), and microconsolidation device (MCD), that the accomplished studies by the mentioned method have surveyed. Eventually, it can be deduced that, owing to the difference between the MMP in conventional and fractured reservoirs, a reliable method (laboratory or mathematical model) for estimating the MMP in fractured reservoirs is required.

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Section: Investigations On Miscible Gas Injection In the Matrix–fract...mentioning

confidence: 99%

Section: Challenges and Perspectivesmentioning

confidence: 99%

Mini Review of Miscible Condition Evaluation and Experimental Methods of Gas Miscible Injection in Conventional and Fractured Reservoirs

2021

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Numerical Simulation of the Impact of Natural Fracture on Fluid Composition Variation Through a Porous Medium

Papi

Mohebbi

Eshraghi

2018

Journal of Energy Resources Technology

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In order to lessen the computational time in fractured oil reservoir simulations, all fractures are usually assumed to be as one equivalent fracture at the center or around the model. This, specially, has applications in industrial engineering software, where this assumption applies. In this study, using two general contradictory examples, it is shown that ignoring a fracture network and assuming an equivalent single-fracture has no logical justification and results in a considerable error. The effect of fracture aperture on composition distribution of a binary and a ternary mixture was also investigated. These mixtures were C1 (methane)/n-C4 (normal-butane) and C1 (methane)/C2 (ethane)/n-C4 (normal-butane), which were under diffusion and natural convection. Governing equations were numerically solved using matlab. One of the main relevant applications of this study is where permeability and temperature gradient are the key difference between reservoirs. Compositional distribution from this study could be used to estimate initial oil in place. Using this study, one can find the optimum permeability, namely the permeability at which the maximum species separation happens, and the threshold permeability (or fracture aperture), after which the convection imposes its effect on composition distribution. It is found that the threshold permeability is not constant from reservoir to reservoir. Also, one can find that full mixing happens in the model, namely heavy and light densities of top and bottom mix up together in the model. Furthermore, after maximum separation point, convection causes unification of components.

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Impact of natural convection and diffusion on variation of oil composition through a fractured model

Cited by 2 publications

References 15 publications

Mini Review of Miscible Condition Evaluation and Experimental Methods of Gas Miscible Injection in Conventional and Fractured Reservoirs

Mini Review of Miscible Condition Evaluation and Experimental Methods of Gas Miscible Injection in Conventional and Fractured Reservoirs

Numerical Simulation of the Impact of Natural Fracture on Fluid Composition Variation Through a Porous Medium

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