A method for simultaneously determining axial permeability and transverse permeability of tight reservoir cores by canister degassing test

Zhao, Yu; Wang, Chaolin; Bi, Jing

doi:10.1002/ese3.580

Cited by 4 publications

(2 citation statements)

References 33 publications

(72 reference statements)

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“…Zhao et al 23 proposed a methodology to determine tight reservoir cores' axial and transverse permeability using the Canister Degassing test. The methodology utilizes gas production data from the canister degassing test and correlates it with the analytical solution of the continuity equation in anisotropic core samples to determine the axial and transverse permeability.…”

Section: Methodsmentioning

confidence: 99%

CFD estimation of gas production in tight carbonates using single and dual-porosity models

Khadri,

Hussein,

Sadooni

et al. 2023

Sci Rep

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Tight Carbonate reservoirs are regarded as one of the most complex reservoir formations due to the heterogeneity and complexity of their mineral composition, pore structure, and storage model. It is uncommon to study the implementation of a transport model appropriate for such formation. Recent studies focused on tight reservoirs and developed models for shale or coal bed methane reservoirs. This study proposes a single and dual-porosity transport model that solely considers the tight matrix and acidized region to shed light on the transport models for tight carbonates. The numerical model included the effect of transport mechanisms such as Knudsen diffusion, desorption, and viscous flow. The proposed transport model includes the apparent permeability model defining these transport mechanisms. Finite element method analysis was conducted on the numerical model using COMSOL Multiphysics. Due to the presence of nanopores in both shale and tight Carbonate, transport models proposed for the former can be utilized to determine the fluid flow behavior in the latter. The adsorption isotherm, rock density, pore structure, porosity, and permeability of the tight carbonate reservoir, which contrasted with the shale results, were the defining features of the reservoir used in the transport model. The dual-porosity model yielded a peak production of 104,000 m3/day, whereas the proposed model represents a shallow production rate from the single-porosity reservoir. The results were validated with an analytical solution proposed in the literature. Based on the literature findings and the production profile, the desorption did not play a significant role in the total production due to calcite’s low affinity towards CH4.

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Section: Methodsmentioning

confidence: 99%

CFD estimation of gas production in tight carbonates using single and dual-porosity models

Khadri,

Hussein,

Sadooni

et al. 2023

Sci Rep

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show abstract

“…Compared with conventional reservoirs, unconventional reservoirs usually have extremely low permeability, which brings difficulty to permeability measurement. [6][7][8] Many methods have been developed to determine rock permeability in the laboratory and can be subdivided into two kinds based on their steady-state or unsteady-state nature. 9,10 The steady-state methods measure the steadystate flow rate under a given pressure gradient, and the unsteady-state methods measure transient pressure variations.…”

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confidence: 99%

A modified pulse‐decay approach to simultaneously measure permeability and porosity of tight rocks

Wang

Nolte

Tian

et al. 2021

Energy Science & Engineering

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The study of unconventional reservoirs continues to attract increasing attention around the world due to their tremendous potential for future gas reserves and production. [1][2][3][4][5] Permeability characterizes the fluid flow rate through the rock formation under the pressure gradient and therefore is one of the most important parameters for the evaluation and exploitation of unconventional reservoirs. Compared with conventional reservoirs, unconventional reservoirs usually have extremely low permeability, which brings difficulty to permeability measurement. [6][7][8] Many methods have been developed to determine rock permeability in the laboratory and can be subdivided into two kinds based on their steady-state or unsteady-state nature. 9,10 The steady-state methods measure the steadystate flow rate under a given pressure gradient, and the unsteady-state methods measure transient pressure variations. Generally, the unsteady-state methods are more suitable for measurements on tight rocks than the steady-state

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Novel methodology to couple decline curve analysis with CFD reservoir simulations for complex shale gas reservoirs

Khadri,

Al‐Marri,

Nasser

et al. 2024

Can J Chem Eng

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Shale reservoirs are highly complex and are difficult to study using conventional reservoir simulation tools. This study introduces a novel methodology for estimating production from complex shale gas reservoirs by coupling decline curve analysis (DCA) with computational fluid dynamics (CFD) simulations. The proposed method uses exponential DCA to analyze production data from a dual porosity–permeability shale gas transport model. These complexities include fracture characteristics, geomechanical properties, nanopore confinement effects, and multiple flow mechanisms contributing to the total production performance. The shale gas transport model is validated through historical production data from Marcellus shale. The new methodology also tests fracture characteristics. It shows that increased porosity and permeability will increase the recoverable reserves but will have varying effects on the decline rate. The paper demonstrates the advantages of the proposed methodology over conventional reservoir simulation tools. It provides insights into the factors affecting shale gas production performance through the inclusion of the complexities of an unconventional shale gas reservoir. The paper provides a proof of concept on the particular reservoir of which the field data is provided—Barnett and Marcellus Shale.

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A method for simultaneously determining axial permeability and transverse permeability of tight reservoir cores by canister degassing test

Cited by 4 publications

References 33 publications

CFD estimation of gas production in tight carbonates using single and dual-porosity models

CFD estimation of gas production in tight carbonates using single and dual-porosity models

A modified pulse‐decay approach to simultaneously measure permeability and porosity of tight rocks

Novel methodology to couple decline curve analysis with CFD reservoir simulations for complex shale gas reservoirs

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