You are here
Home > Flow Mechanics

Rate Transient Analysis for Multistage Fractured Horizontal Well in Tight Oil Reservoirs considering Stimulated Reservoir Volume

A mathematical model of multistage fractured horizontal well (MsFHW) considering stimulated reservoir volume (SRV) was presented for tight oil reservoirs. Both inner and outer regions were assumed as single porosity media but had different formation parameters. Laplace transformation method, point source function integration method, superposition principle, Stehfest numerical algorithm, and Duhamel’s theorem were used comprehensively to obtain the semianalytical solution.

Abstract A mathematical model of multistage fractured horizontal well (MsFHW) considering stimulated reservoir volume (SRV) was presented for tight oil reservoirs. Both inner and outer regions were assumed as single porosity media but had different formation parameters. Laplace transformation method, point source function integration method, superposition principle, Stehfest numerical algorithm, and

Fractal model and Lattice Boltzmann Method for Characterization of Non-Darcy Flow in Rough Fractures

The irregular morphology of single rock fracture significantly influences subsurface fluid flow and gives rise to a complex and unsteady flow state that typically cannot be appropriately described using simple laws. Yet the fluid flow in rough fractures of underground rock is poorly understood. Here we present a numerical method and experimental measurements to probe the effect of fracture roughness on the properties of fluid flow in fractured rock. We develop a series of fracture models with various degrees of roughness characterized by fractal dimensions that are based on the Weierstrass– Mandelbrot fractal function. The Lattice Boltzmann Method (LBM), a discrete numerical algorithm, is employed for characterizing the complex unsteady non-Darcy flow through the single rough fractures and validated by experimental observations under the same conditions.

Abstract The irregular morphology of single rock fracture significantly influences subsurface fluid flow and gives rise to a complex and unsteady flow state that typically cannot be appropriately described using simple laws. Yet the fluid flow in rough fractures of underground rock is poorly understood. Here we present a numerical method

Effect of Matrix-Wellbore Flow and Porosity on Pressure Transient Response in Shale Formation Modeling by Dual Porosity and Dual Permeability System

A mathematical dual porosity and dual permeability numerical model based on perpendicular bisection (PEBI) grid is developed to describe gas flow behaviors in shale-gas reservoirs by incorporating slippage corrected permeability and adsorbed gas effect. Parametric studies are conducted for a horizontal well with multiple infinite conductivity hydraulic fractures in shale-gas reservoir to investigate effect of matrix-wellbore flow, natural fracture porosity, and matrix porosity.

Abstract A mathematical dual porosity and dual permeability numerical model based on perpendicular bisection (PEBI) grid is developed to describe gas flow behaviors in shale-gas reservoirs by incorporating slippage corrected permeability and adsorbed gas effect. Parametric studies are conducted for a horizontal well with multiple infinite conductivity hydraulic fractures in shale-gas

Numerical Simulation Research on Gas-Solid Two Phase Flow in Oil Shale Circulating Fluidized Bed

Oil shale circulating fluidized bed combustion technology is a new technology and it is the most economical and efficient combustion way for using Oil shale resources. Nnumerical simulation of CFB is very important in the prediction of its flow behavior.

Numerical Simulation Research on Gas-Solid Two Phase Flow in Oil Shale Circulating Fluidized Bed   Qing Wang1,Jun-tao Feng1,Bai-zhong Sun1,Yong-qing Qi2,Deng-feng Chen2,Jin-long Luo1 1.Northeast Dianli University, Jilin, Jilin Province, China-2. Daqing Oilfield Limited Company, Daqing City, Chin Abstract Oil shale circulating fluidized bed combustion technology is a new technology and it is the most economical and

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

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 Diansen Yang1, Wei Wang1,2, Weizhong Chen1,3, Shugang Wang3 & Xiaoqiong Wang4   1State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese. Academy of Sciences, Wuhan, Hubei 430071, China. 2University of

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

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   Li Chen1,2, Lei Zhang3, Qinjun Kang2, Hari S. Viswanathan2, Jun Yao3 & Wenquan Tao1   1Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi, 710049, China, 2Earth and

Subcontinuum mass transport of condensed hydrocarbons in nanoporous media

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   Kerstin Falk1, Benoit Coasne1, Roland Pellenq1, Franz-Josef Ulm1 & Lyderic Bocquet1,w   Abstract Although hydrocarbon  production from unconventional reservoirs, the  so-called shale gas, has exploded recently, reliable predictions of resource availability and extraction are missing because conventional tools fail to account  for their ultra-low permeability

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

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   Soodabeh Esmailia, Shahab D. Mohagheghb,*   aAsset  Development Team, North Operation, California Resources Corporation, California 90024, USA bWest Virginia University, 345-E Mineral Resources Bldg., P. O. Box 6070, Morgantown, WV 26506, USA   Abstract Hydrocarbon production from shale has attracted much attention in  the recent years.

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

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

Lattice Boltzmann Simulation of Shale Gas Transport in Organic Nano-Pores Xiaoling Zhang1, Lizhi Xiao1, Xiaowen Shan1,2 & Long Guo1   1State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, People’s Republic of China, 2Beijing Aeronautical  Science & Technology Research Institute of COMAC (BASTRI), People’s Republic of China.   Abstract Permeability is

Improved oil recovery in nanopores: NanoIOR

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  James Moraes de Almeida1 & Caetano Rodrigues Miranda1,2   1Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, SP, Brazil. 2Instituto de Física, Universidade de São Paulo, São Paulo, SP, Brazil.   Abstract Fluid flow through minerals pores occurs in underground aquifers, oil and shale gas reservoirs.

Top