Development of new analytical model for series and parallel triple porosity models and providing transient shape factor between different regions

Abbasi, Mahdi; Sharifi, Mohammad; Kazemi, Alireza

doi:10.1016/j.jhydrol.2019.04.038

Cited by 6 publications

(3 citation statements)

References 24 publications

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“…Well performance is considered as a critical factor because of its close relationship with economics of unconventional reservoirs. Therefore, advanced techniques for unconventional reservoirs are constantly updated to generate the accurate production prediction tools by covering the relative petrophysical properties of subsurface fluid storage and flow [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

A New Approach for Production Prediction in Onshore and Offshore Tight Oil Reservoir

Qiu,

Fan,

Chen

et al. 2023

JMSE

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Rapid technological advances have accelerated offshore and onshore tight oil extraction to meet growing energy demand. Reliable tools to carry out production prediction are essential for development of unconventional reservoirs. The existed tri-linear analytical solutions are verified to be versatile enough to capture fundamental flow mechanisms and make accurate production predictions. However, these solutions are obtained in Laplace space with the Laplace transform and numerical inversion, which may lead to uncertainty in the solution. In this paper, a general analytical solution is derived in real-time space through integral transform and average pressure substitution. Namely, the partial differential equations describing subsurface fluid flow are firstly triple-integrated and then the obtained volume average pressure are replaced with the rate-dependent expressions. Furthermore, the ordinary differential equations related to oil rate are solved analytically in real-time space. To validate our model, this derived solution is verified against two numerical models constructed with two typical physical configurations. The great match indicates the accuracy and applicability of the analytical solution. According to the developed workflow, two field cases including offshore and onshore tight oilfield data are selected for history matching and production prediction. This new approach not only makes the obtained solution more simplified, but also helps field engineers diagnose flow patterns more quickly to better optimize production schemes.

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Section: Introductionmentioning

confidence: 99%

A New Approach for Production Prediction in Onshore and Offshore Tight Oil Reservoir

Qiu,

Fan,

Chen

et al. 2023

JMSE

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“…Stalgorova et al [21] and Heidari et al [22] introduced an enhanced-fracture-region (EFR) model to consider the cases where branch fractures cover the interfracture region. Mahdi et al [23] firstly provided the transient shape factor among different regions in the triple-porosity model.…”

Section: Introductionmentioning

confidence: 99%

“…The models represent an excellent attempt to capture reservoir parameters and flow characteristics for the complex system associated with the MFHWs. However, most analytical solutions were derived by Laplace transformation [17][18][19][20][21][22][23] and Boltzmann's transformation [24]. Numerical inversion algorithm [25] is needed to transform the Laplace space into real-time space.…”

Section: Introductionmentioning

confidence: 99%

An Analytical Model for Production Analysis of Hydraulically Fractured Shale Gas Reservoirs Considering Irregular Stimulated Regions

Qiu

2020

Energies

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Shale gas reservoirs are typically developed by multistage, propped hydraulic fractures. The induced fractures have a complex geometry and can be represented by a high permeability region near each fracture, also called stimulated region. In this paper, a new integrative analytical solution coupled with gas adsorption, non-Darcy flow effect is derived for shale gas reservoirs. The modified pseudo-pressure and pseudo-time are defined to linearize the nonlinear partial differential equations (PDEs) and thus the governing PDEs are transformed into ordinary differential equations (ODEs) by integration, instead of the Laplace transform. The rate vs. pseudo-time solution in real-time space can be obtained, instead of using the numerical inversion for Laplace transform. The analytical model is validated by comparison with the numerical model. According to the fitting results, the calculation accuracy of analytic solution is almost 99%. Besides the computational convenience, another advantage of the model is that it has been validated to be feasible to estimate the pore volume of hydraulic region, stimulated region, and matrix region, and even the shape of regions is irregular and asymmetrical for multifractured horizontal wells. The relative error between calculated volume and given volume is less than 10%, which meets the engineering requirements. The model is finally applied to field production data for history matching and forecasting.

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An Analytical Model for Water Inflow into a Karst Tunnel in Vuggy and Fractured Porous Rock Aquifers

Zhang

2022

Int. J. Geomech.

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Development of new analytical model for series and parallel triple porosity models and providing transient shape factor between different regions

Cited by 6 publications

References 24 publications

A New Approach for Production Prediction in Onshore and Offshore Tight Oil Reservoir

A New Approach for Production Prediction in Onshore and Offshore Tight Oil Reservoir

An Analytical Model for Production Analysis of Hydraulically Fractured Shale Gas Reservoirs Considering Irregular Stimulated Regions

An Analytical Model for Water Inflow into a Karst Tunnel in Vuggy and Fractured Porous Rock Aquifers

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