Others0
Development of unconventional shale gas resources involves intensive capital investment accompanying large commercial production uncertainties.

Economic appraisal of shale gas resources, an example from the Horn River shale gas play, Canada
Reservoir Simulation
In this study, a numerical model was developed to investigate the effect of confined phase behavior on cumulative oil and gas production of four horizontal wells with different fracture geometries.

A Comprehensive Numerical Model for Simulating Fluid Transport in Nanopores
Adsorption
Velocity (line-dot) agrees with the flat type, and the oscillation is covered by noise; the accumulative mass flux curve (dashed line) is only affected by the density distribution.

Impact of Adsorption on Gas Transport in Nanopores
PVT
Transport properties and mechanisms as well as phase behavior under nanoscale confinement exhibit significant deviations from their bulk behavior. Phase behavior due to the significant effect of molecule-wall interactions as well as molecule-molecule interactions changes in nanopores.

Effects of Non-Darcy Flow and Pore Proximity on Gas Condensate Production From Nanopore Unconventional Resources
Fracture Simulation0
Hydraulic fracturing (HF) technique has been extensively used for the exploitation of unconventional oil and gas reservoirs. HF enhances the connectivity of less permeable oil and gas-bearing rock formations by fluid injection, which creates an interconnected fracture network and increases the hydrocarbon production.

Numerical simulation of hydraulic fracturing and associated microseismicity using finite-discrete element method
Reservoir Simulation
In North America, the transition from more conventional reservoirs into tight, basin-centered gas and now source shales has caused the industry to change the way reservoir performance is being assessed, measured, and documented. Historically in conventional reservoirs the reservoir quality was carefully examined on a well by well basis to determine reserves in place and exploitation plans.

Shale Reservoir-Centric Completions
Others
Life cycle assessments of shale gas activities differ in their findings. Among the various studies, researchers estimate different greenhouse gas emissions, rates of water use, and rates of wastewater production.

Defining The Shale Gas Life Cycle: a framework for identifying and mitigating environmental impacts
Others
This paper presents the results of an analysis of the current state of shale play development in the United States to determine the recent advances in the understanding of reservoir behaviors and the most effective uses of new techniques and technologies.

Effective Technology Strategy for Shale Plays
Adsorption0
The adsorption isotherms of CH4 have been investigated by GCMC simulations at different temperatures and various pore sizes. In the montmorillonite (MMT) clays without a cation exchange structure, from the density profile, we find the molecules preferentially adsorb onto the surface, and only an obvious single layer was observed.

Molecular Simulation of Shale Gas Adsorption and Diffusion in Clay Nanopores
PVT
This paper describes the complex phenomena related to the impact of adsorption and capillary condensation of gas-condensate systems in nanopores. New two phase saturation model and new algorithm for search capillary condensation area is discussed.

Confined Phase Envelope of Gas-Condensate Systems in Shale Rocks
Fracture Simulation
Comparing with other simulation models, the fractal fracture could not only maintain the bifurcation of the fracture geometry but also represent the multi-level feature of the complex fracture networks according to its fractal characteristics.

Application of the fractal geometry theory on fracture network simulation
Reservoir Simulation

Simulation of Gas Transport in Tight/Shale Gas Reservoirs by a Multicomponent Model Based on PEBI Grid
Adsorption0
The methane storage behavior in nanoporous material is significantly different from that of a bulk phase, and has a fundamental role in methane extraction from shale and its storage for vehicular applications.

Methane storage in nanoporous material at supercritical temperature over a wide range of pressures
Flow Mechanics
The coupled effect of gas slippage and effective stress on shale permeability remains unclear. Here we perform laboratory experiments on Longmaxi shale specimens to explore the coupled effect.

Experimental investigation on the coupled effect of effective stress and gas slippage on the permeability of shale
Flow Mechanics
The streamlines are quite tortuous, and continuous pathways from the inlet to the outlet are quite few, resulting in quite low permeability of shales.

Nanoscale simulation of shale transport properties using the lattice Boltzmann method: permeability and diffusivity
Flow Mechanics
Left: In bulk, molecular diffusion is well described by the hydrodynamic Stokes–Einstein relation Ds=μkBT=kB/(4πZη0) (with slip boundary conditions). The effective particle diameter 2R0 is consistent with σCH2 —independently of the alkane length—because the diffusive motion is mostly in longitudinal direction. Right: In contrast, in the nanopores, movement of alkane molecules is dominated by friction on the carbon matrix, corrected for the free volume accessible to the molecule (green sphere). The total friction force is a sum of the forces between the individual monomers with the pore wall—therefore scaling linearly with the alkane length. v stands for the molecule velocity.

Subcontinuum mass transport of condensed hydrocarbons in nanoporous media
Flow Mechanics0
Top-Down modeling, a recently developed data-driven reservoir modeling technology  (ISI, 2014), is defined as a formalized, comprehensive,

Full field reservoir modeling of shale assets using advanced data-driven analytics
Flow Mechanics
Lattice Boltzmann Simulation of Shale Gas Transport in Organic Nano-Pores

Lattice Boltzmann Simulation of Shale Gas Transport in Organic Nano-Pores
Flow Mechanics
The reservoir has water alongside the silica matrix, and after about 2 nm (for both sides), the oil slab begins, having a thickness of 5 nm. To induce the fluid flux, as explained in the methodology section, a gravity field was applied, only to the oil molecules.

Improved oil recovery in nanopores: NanoIOR
Flow Mechanics
Figure 8 shows a pressure distribution of the same pore network layer where the pore size distribution is according to the real shale matrix pore size range and the gas pressure ratio (gas pressure of pore i divides maximum pore pressure of this layer) is a curved surface demonstrating the fingering effect.

Micro/Nano-pore Network Analysis of Gas Flow in Shale Matrix
Reservoir Simulation0
Application the Arps method to shale Plays

Behavior of Arps Equation in Shale Plays
Flow Mechanics
With this we can calculate and view in a fast, simple and immediate as varies the Knudsen number and the apparent permeabilities for the models presented in the previous post through the introduction of petrophysical parameters of our field. The calculations are carried out and plotted for a range of pressures comprised between 1psi to 15000psi.

Excel Worksheet to Calculate the Permeability in Shale Gas Fields
Flow Mechanics
Dmitriy Silin, SPE, Lawrence Berkeley National Laboratory, and Tad Patzek, SPE, University of Texas, Austin.

Flow Mechanics in Shale Gas
Others
This paper demonstrates technical and economic feasibility of ICP (Ion Concentration Polarization) electrical desalination for the high saline water treatment, by adopting multi-stage operation with better energy efficiency.

Purification of High Salinity Brine by Multi-Stage Ion Concentration Polarization Desalination

Shale Basic Knowledge

shale formation modeling in a simulation through information acquired with seismic and well logs.

How to evaluate a shale play? Part B

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HOW TO EVALUATE A SHALE PLAY? Part B Emanuel Martin In the first part of “HOW TO EVALUATE A SHALE PLAY?" we've developed: Shale play features, Main properties

is required to know the values of porosity, water saturation, permeability, reservoir volume and the volumetric factor of the gas or oil; the Total Organic Carbon (TOC), thermal maturity, depositional environment, mineralogical composition and mechanical properties.

How to evaluate a shale play? Part A

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How to evaluate a shale play? Part A Emanuel Martin Introduction Shale formations constitute 60% of the rocks that make up the Earth's crust being only a small group

Pores in shale plays

WHERE IS THE GAS STORED?

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Michigan Department of Environmental Quality website. Slurry blender, pump truck, proppant, van, Wellhead, Allaboutshale.com, shale handbook.

WHAT IS HYDRAULIC FRACTURING? PART B

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Hydraulic fracturing

What is hydraulic fracturing? part A

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Gray Shale rock from Vaca Muerta Formation, Neuquén, Argentina.

WHAT IS A SHALE?

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Flow Mechanics

The coupled effect of gas slippage and effective stress on shale permeability remains unclear. Here we perform laboratory experiments on Longmaxi shale specimens to explore the coupled effect.

Experimental investigation on the coupled effect of effective stress and gas slippage on the permeability of shale

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Experimental investigation on the coupled effect of effective stress and gas slippage on the permeability of shale Diansen Yang1, Wei Wang1,2, Weizhong Chen1,3, Shugang Wang3 &

The streamlines are quite tortuous, and continuous pathways from the inlet to the outlet are quite few, resulting in quite low permeability of shales.

Nanoscale simulation of shale transport properties using the lattice Boltzmann method: permeability and diffusivity

0
Left: In bulk, molecular diffusion is well described by the hydrodynamic Stokes–Einstein relation Ds=μkBT=kB/(4πZη0) (with slip boundary conditions). The effective particle diameter 2R0 is consistent with σCH2 —independently of the alkane length—because the diffusive motion is mostly in longitudinal direction. Right: In contrast, in the nanopores, movement of alkane molecules is dominated by friction on the carbon matrix, corrected for the free volume accessible to the molecule (green sphere). The total friction force is a sum of the forces between the individual monomers with the pore wall—therefore scaling linearly with the alkane length. v stands for the molecule velocity.

Subcontinuum mass transport of condensed hydrocarbons in nanoporous media

0
Top-Down modeling, a recently developed data-driven reservoir modeling technology  (ISI, 2014), is defined as a formalized, comprehensive,

Full field reservoir modeling of shale assets using advanced data-driven analytics

0
Lattice Boltzmann Simulation of Shale Gas Transport in Organic Nano-Pores

Lattice Boltzmann Simulation of Shale Gas Transport in Organic Nano-Pores

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Global Resources

Taken from http://earthly-musings.blogspot.com.es/2013/01/a-trip-to-booming-eagle-ford-shale-oil.html

Eagle Ford Shale Part A: Geological Review

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Eagle Ford Shale Part A: Geological Review Emanuel Martin Introduction The Eagle Ford Play in the Center South of Texas is the largest  tight oil producer and the

Barnett Shale Play technical information

Barnett Technical Information

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BARNETT TECHNICAL INFORMATION Emanuel Martin INTRODUCTION Barnett Field in Texas is the pioneer in the shale gas production in United States. Since 1980 the Mitchell Energy Company began

Reservoir Simulation

In this study, a numerical model was developed to investigate the effect of confined phase behavior on cumulative oil and gas production of four horizontal wells with different fracture geometries.

A Comprehensive Numerical Model for Simulating Fluid Transport in Nanopores

0
In North America, the transition from more conventional reservoirs into tight, basin-centered gas and now source shales has caused the industry to change the way reservoir performance is being assessed, measured, and documented. Historically in conventional reservoirs the reservoir quality was carefully examined on a well by well basis to determine reserves in place and exploitation plans.

Shale Reservoir-Centric Completions

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Simulation of Gas Transport in Tight/Shale Gas Reservoirs by a Multicomponent Model Based on PEBI Grid

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Application the Arps method to shale Plays

Behavior of Arps Equation in Shale Plays

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