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Multiscale Modeling of Gas Transport and Storage in Shale Resources

A Model for the fluid transport in nanopores of shale gas resources | Estimated Length : 30 mins

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Course Content

The gas transport in organic-rich shales involves different length-scales, from organic and inorganic pores to macro- and macrofractures. In order to upscale the fluid transport from nanoscale (flow through nanopores) to larger scales (to micro- and macrofractures), multicontinuum methodology is planned to be used. Governing equations describing the gas mass balance in multicontinuum models are the same as in a single-continuum model; however, they require special considerations for volume consistency and the mass-exchange terms. In this technique, unlike the conventional approaches, spatial coordinates of each continuum is not explicitly defined. Furthermore, the fluid transport and storage of each continuum are governed by different physics. Prior to applying the multicontinuum approach, well-founded techniques for simulating the fluid transport in nonoscale pores are required.

The nanoscale pores and capillaries bring new molecular level non-Darcian transport effects into the simulation. Therefore, conventional permeability concept, which is usually used to describe the transport of single-phase fluids in reservoir simulators, is no-longer valid.

Due to the recent achievements in microfabrication, considerable interests in the gas transport within miniaturized channels has emerged in other disciplines, such as Physics and material sciences. Several reduced-order Boltzmann equation methods, such as Grad's thirteen moment method are proposed to simulate the fluid transport with less computational times.

In the proposed work, the focus is on the upscaling of the transport phenomena using multicontinuum methodology by applying the recently-developed regularized Grad's thirteen moment simulation technique to the shale nanopores.

Overview

Who Should Attend

All geoscientists and engineers working in shale plays who wish to gain an understanding of gas transport and storage.

Objectives

The objective of the proposed work is to present a model for the fluid transport in nanopores of shale gas resources and to develop a framework for upscaling of the transport from nanopores into the micro- and macrofracture networks. The proposed work can lead to development of effective methods for gas production and CO2 storage in subsurface geological structures.

Estimated Time

30 minutes of video lectures


Your Instructor


AAPG
AAPG

Since its founding in 1917, the American Association of Petroleum Geologists has been a pillar of the worldwide scientific community. The original purpose of AAPG, to foster scientific research, to advance the science of geology, to promote technology, and to inspire high professional conduct, still guides the Association today.

AAPG provides publications, conferences, and educational opportunities to geoscientists and disseminates the most current geological information available to the general public.

As the world's premier professional association for explorationists, AAPG is about the science of petroleum geology.

It's also about the people.

AAPG's membership is made up of more than 40,000 members in 129 countries in the upstream energy industry who collaborate – and compete – to provide the means for humankind to thrive.

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