Beijing Petroleum and Oil Institute

Beijing, China

Beijing Petroleum and Oil Institute

Beijing, China
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Liu X.,Huazhong University of Science and Technology | Liu X.,Shanghai JiaoTong University | Guo Z.,Huazhong University of Science and Technology | Guo Z.,Beijing Petroleum and Oil Institute
Computers and Mathematics with Applications | Year: 2013

In this paper, the pressure-driven flow in a long micro-channel is studied via a lattice Boltzmann equation (LBE) method. With the inclusion of the gas-wall collision effects, the LBE is able to capture the flow behaviors in the transition regime. The numerical results are compared with available data of other methods. Furthermore, the effects of rarefaction and compressibility on the deviation of the pressure distribution from the linear one are also investigated. © 2011 Elsevier Ltd. All rights reserved.


Guo Z.,Beijing Petroleum and Oil Institute | Guo Z.,National Laboratory of Coal Combustion | Shi B.,Huazhong University of Science and Technology | Zheng C.,National Laboratory of Coal Combustion
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences | Year: 2011

Spurious currents near an interface between different phases are a common undesirable feature of the lattice Boltzmann equation (LBE) method for two-phase systems. In this paper, we show that the spurious currents of a kinetic theory-based LBE have a significant dependence on the parity of the grid number of the underlying lattice, which can be attributed to the chequerboard effect. A technique that uses a Lax-Wendroff streaming is proposed to overcome this anomaly, and its performance is verified numerically. © 2011 The Royal Society.


Wang L.,Huazhong University of Science and Technology | Guo Z.,Huazhong University of Science and Technology | Guo Z.,Beijing Petroleum and Oil Institute | Zheng C.,Huazhong University of Science and Technology
Computers and Fluids | Year: 2010

In this paper, a lattice-Boltzmann equation (LBE) with multi relaxation times (MRT) is presented for axisymmetric flows. The model is an extension of a recent model with single-relaxation-time [Guo et al., Phys. Rev. E 79, 046708 (2009)], which was developed based on the axisymmetric Boltzmann equation. Due to the use of the MRT collision model, the present model can achieve better numerical stability. The model is validated by some numerical tests including the Hagen-Poiseuille flow, the pulsatile Womersley flow, and the external flow over a sphere. Numerical results are in excellent agreement with analytical solutions or other available data, and the improvement in numerical stability is also confirmed. © 2010 Elsevier Ltd.


Guo Z.,Huazhong University of Science and Technology | Guo Z.,Beijing Computational Science Research Center | Qin J.,Beijing Petroleum and Oil Institute | Zheng C.,Huazhong University of Science and Technology
Physical Review E - Statistical, Nonlinear, and Soft Matter Physics | Year: 2014

It is a challenging task to model nonequilibrium gas flows within a continuum-fluid framework. Recently some extended hydrodynamic models in the Navier-Stokes formulation have been developed for such flows. A key problem in the application of such models is that suitable boundary conditions must be specified. In the present work, a generalized second-order slip boundary condition is developed in which an effective mean-free path considering the wall effect is used. By combining this slip scheme with certain extended Navier-Stokes constitutive relation models, we obtained a method for nonequilibrium gas flows with solid boundaries. The method is applied to several rarefied gas flows involving planar or curved walls, including the Kramers' problem, the planar Poiseuille flow, the cylindrical Couette flow, and the low speed flow over a sphere. The results show that the proposed method is able to give satisfied predictions, indicating the good potential of the method for nonequilibrium flows. © 2014 American Physical Society.


Zhang K.,Beijing Petroleum and Oil Institute
Petroleum Science and Technology | Year: 2014

Zeolite grains are pretty effective in blocking highly permeable strata. The author observed the chemical component and exterior construct of zeolite, measured adsorptive ability of the zeolite in the polymer carrying solution, evaluated the blocking and flooding effect, and analyzed the mechanism. The results show that the size of the grain and density of the solution, injection time, slug size, and how the zeolite and polymer slug combined affect blocking and flooding effects. Experiments at Lama-dian oilfield showed that a zeolite-polymer solution is extremely effective in blocking the extra-high-permeability strata. © 2014 Copyright Chinese Academy of Sciences.


Liu P.,China University of Geosciences | Wu Y.,Beijing Petroleum and Oil Institute | Li X.,Beijing Petroleum and Oil Institute
Fuel | Year: 2013

In the process of natural energy depletion, foamy oil is characterized of high oil viscosity, low production GOR, high daily production rate; relatively slow production decline rate and high primary recovery factor (compared with conventional heavy oil). The stability of the foam becomes the dominant factor that determines the life of the 'foamy oil'. To quantify the main factors affecting the stability of the foam, a high-temperature-high-pressure (HTHP) visualized experiment model for foamy oil stability test was developed. A serial of experiments were conducted to evaluate the performance of the foam stability under different conditions, including temperature, dissolved gas oil ratio, pressure decline rate and the pore sizes. As indicated by the test results, the stable foamy oil exists only if the reservoir temperature is lower than 70 C. The initial dissolved gas oil ratio was higher than 4.23 m3/m 3 and the pressure depletion rate was higher than 0.0018 MPa/min. It was also concluded that as the pore sizes of the porous media becomes closer to the actual reservoir pore size, the foam can last longer, which indicates that the "foamy oil" will exist for a long time during the reservoir development. The experimental results above have been used to guide the development of Block MPE-3 in Venezuela. © 2013 Elsevier Ltd. All rights reserved.


Guo Z.,Huazhong University of Science and Technology | Guo Z.,Beijing Petroleum and Oil Institute | Shi B.,Huazhong University of Science and Technology | Zheng C.,Huazhong University of Science and Technology
Computers and Mathematics with Applications | Year: 2011

In this work the micro gas flow between two concentric cylinders is investigated by a lattice Boltzmann equation (LBE) model with multiple relaxation times. A local kinetic boundary condition is proposed for the LBE to model the gaswall interaction. Numerical simulations are conducted to examine the tangential velocity distribution under different flow conditions. It is shown that the proposed LBE can capture the velocity inversion phenomenon successfully. Comparisons with the NavierStokes solutions and DSMC results are also made and it is shown that the LBE yields better predictions. © 2011 Elsevier Ltd. All rights reserved.


Lu J.,Huazhong University of Science and Technology | Lu J.,Beijing Petroleum and Oil Institute | Lu J.,Dalian University of Technology | Han H.,Huazhong University of Science and Technology | And 2 more authors.
Physical Review E - Statistical, Nonlinear, and Soft Matter Physics | Year: 2012

As an alterative version of the lattice Boltzmann models, the multiple relaxation time (MRT) lattice Boltzmann model introduces much less numerical boundary slip than the single relaxation time (SRT) lattice Boltzmann model if some special relationship between the relaxation time parameters is chosen. On the other hand, most current versions of the immersed boundary lattice Boltzmann method, which was first introduced by Feng and improved by many other authors, suffer from numerical boundary slip as has been investigated by Le and Zhang. To reduce such a numerical boundary slip, an immerse boundary lattice Boltzmann model based on multiple relaxation times is proposed in this paper. A special formula is given between two relaxation time parameters in the model. A rigorous analysis and the numerical experiments carried out show that the numerical boundary slip reduces dramatically by using the present model compared to the single-relaxation-time-based model. © 2012 American Physical Society.


Chai Z.,Huazhong University of Science and Technology | Shi B.,Huazhong University of Science and Technology | Guo Z.,Huazhong University of Science and Technology | Guo Z.,Beijing Petroleum and Oil Institute | Rong F.,Huazhong University of Science and Technology
Journal of Non-Newtonian Fluid Mechanics | Year: 2011

The generalized Newtonian fluid, as an important kind of non-Newtonian fluids, has been widely used in both science and engineering. In this paper, we present a multiple-relaxation-time lattice Boltzmann model for generalized Newtonian fluid, and validate the model through a detailed comparison with analytical solutions and some published results. The accuracy and stability of the present model are also studied, and compared with those of the popular single-relaxation-time lattice Boltzmann model. Finally, the limit and potential of the multiple-relaxation-time lattice Boltzmann model are briefly discussed. © 2011 Elsevier B.V.


Guo Z.,Beijing Petroleum and Oil Institute | Guo Z.,Huazhong University of Science and Technology | Zheng C.,Huazhong University of Science and Technology | Shi B.,Huazhong University of Science and Technology
Physical Review E - Statistical, Nonlinear, and Soft Matter Physics | Year: 2011

The capability of modeling and simulating complex interfacial dynamics of multiphase flows has been recognized as one of the main advantages of the lattice Boltzmann equation (LBE). A basic feature of two-phase LBE models, i.e., the force balance condition at the discrete lattice level of LBE, is investigated in this work. An explicit force-balance formulation is derived for a flat interface by analyzing the two-dimensional nine-velocity (D2Q9) two-phase LBE model without invoking the Chapman-Enskog expansion. The result suggests that generally the balance between the interaction force and the pressure does not hold exactly on the discrete lattice due to numerical errors. It is also shown that such force imbalance can lead to some artificial velocities in the vicinity of phase interface. © 2011 American Physical Society.

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