Investigation of the two-dimensional problem of filtration of high-viscosity oil in a formation under thermal action

2017 ◽  
Vol 12 (2) ◽  
pp. 232-237
Author(s):  
A.A. Gizzatullina
Keyword(s):  
Numerical Solutions ◽  
Numerical Study ◽  
Thermal Action ◽  
Horizontal Wells ◽  
High Viscosity ◽  
Oil Reservoir ◽  
Two Dimensional ◽  
Adopted Model ◽  
High Viscosity Oil ◽  
Oil Filtration

A theoretical and numerical study of developing a reservoir with high-viscosity oil using the technology of pair horizontal wells is presented. In a two-dimensional formulation, numerical solutions to the problem of the possibility of extracting high-viscosity oil from a formation with the use of thermal action were obtained. The proposed method is aimed at increasing the efficiency of developing an oil reservoir with high viscosity oil by ensuring a uniform warming up of the developing zone of the field. The adopted model allows to trace a detailed two-dimensional picture of oil filtration in the reservoir and to investigate the main regularities of this process.

Physical and Mathematical Model and Method for Computing Heat and Mass Transfer Processes in the System of a Stratum Featuring Horizontal Well

2021 ◽  
pp. 133-149
Author(s):  
I.N. Zhizhimontov ◽  
A.B. Shabarov
Keyword(s):  
Mathematical Model ◽  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Numerical Study ◽  
Horizontal Wells ◽  
High Viscosity ◽  
Transfer Processes ◽  
Mass Transfer Processes ◽  
Thermophysical Model ◽  
High Viscosity Oil

In order to solve scientific and engineering problems arising during analysis and development of hard-to-recover hydrocarbon reserves in high-viscosity oil deposits, we performed a numerical study of heat and mass transfer processes in a mixture of water and oil. We achieved these goals by developing a hydrodynamic and thermophysical model of non-steady-state quasi-three-dimensional heat and mass transfer in a stratum featuring a system of horizontal wells. We propose an analytical approach to plotting a dynamic computational grid in a natural semi-fixed coordinate system. We compute streamlines and equipotential lines using the analytical solution proposed, which is based on complex analysis. The object of our investigation is natural strata saturatedby a multiphase fluid. We used the physical and mathematical model and the calculation method proposed to develop a software package and conduct a series of numerical and parametric studies concerning the effects caused by thermophysical properties of rocks and fluids combined with various operation modes in a system of horizontal wells. The paper describes how these parameters affect the rate of oil production in a real high-viscosity oil deposit. We verified the results obtained against actual core sample investigation data and technological parameters of oil deposit development, and further compared them to known analytical solutions and commercial hydrodynamic simulators

High-Viscosity Oil Filtration in the Pool Under Thermal Action

2018 ◽  
Vol 91 (2) ◽  
pp. 300-309 ◽  
Author(s):  
V. Sh. Shagapov ◽  
Yu. A. Yumagulova ◽  
A. A. Gizzatullina
Keyword(s):  
Thermal Action ◽  
High Viscosity ◽  
High Viscosity Oil ◽  
Oil Filtration

Wettability determination of oil-reservoir rock samples from the permo-carboniferous high-viscosity oil deposit of the Usinskoye oilfield

2018 ◽  
Author(s):  
Evgeniy A. Rozhdestvenskiy ◽  
Vladimir V. Kozlov ◽  
Irina S. Korol’ ◽  
Vladimir V. Kuvshinov ◽  
Sergey A. Perevezentsev ◽  
...  
Keyword(s):  
High Viscosity ◽  
Reservoir Rock ◽  
Oil Reservoir ◽  
Rock Samples ◽  
High Viscosity Oil

scholarly journals Efficiency of horizontal wells in fields with highly viscous oil on the example of Tengri field

2021 ◽  
Vol 3 (2) ◽  
pp. 111-123
Author(s):  
A. S. Mardanov ◽  
R. A. Yussubaliev ◽  
A. A. Yergaliyev ◽  
A. M. Rakhmetullin
Keyword(s):  
Oil Recovery ◽  
High Efficiency ◽  
Complex Structure ◽  
Horizontal Wells ◽  
High Viscosity ◽  
Vertical Wells ◽  
Viscous Oil ◽  
Effective Development ◽  
High Viscosity Oil ◽  
Highly Viscous Oil

Due to the growing share of high-viscosity oils in Kazakhstan, task of their effective development is becoming more complicated. Development of terrigenous reservoirs that have a complex structure and contain high-viscosity oil lead to low rates of sampling and low values of oil recovery factor. Currently, technologies that ensure high efficiency in development of such deposits are very expensive. The paper considers a pilot section of the development horizon of cretaceous system of the Tengri field, drilled with vertical wells in accordance with current project document. Further the average characteristics of the parameters of horizontal wells are compared and measures are proposed to improve the efficiency of further operation of these wells.

Heating of oil layer by RF electromagnetic and acoustic field with simultaneous oil production

2016 ◽  
Vol 11 (2) ◽  
pp. 240-246
Author(s):  
G.R. Izmailova
Keyword(s):  
Acoustic Waves ◽  
High Viscosity ◽  
Radial Coordinate ◽  
Oil Reservoir ◽  
Heat Sources ◽  
Simultaneous Production ◽  
Physical Fields ◽  
The Finite Difference Method ◽  
Real Picture ◽  
High Viscosity Oil

In the paper the heat of high-viscosity oil reservoir using two physical fields: RF electromagnetic fields and acoustic. It is the simultaneous production of oil. The formula is derived for the volume of heat sources, resulting in the formation therein during propagation of acoustic waves, which is suitable for the calculations in any zone of the formation. A mathematical model based on the heat equation in cylindrical coordinates. The equation depends only on the radial coordinate. Problem is solved by the finite difference method for the implicit scheme. It is shown that neglecting the absorption of acoustic waves in a thermally distorts the real picture of the temperature field in the formation.

Mathematical Modeling Of Radio-Frequency Electromagnetic And Acoustic Impact On Formation In Combination With Solvent Injection

2015 ◽  
Vol 10 (3) ◽  
pp. 89-96
Author(s):  
Gulnara Izmaylova ◽  
Liana Kovaleva ◽  
Nur Nasyrov
Keyword(s):  
Mathematical Modeling ◽  
Mathematical Model ◽  
Radio Frequency ◽  
Acoustic Field ◽  
High Viscosity ◽  
Oil Reservoir ◽  
Rf Heating ◽  
Low Viscosity ◽  
Acoustic Impact ◽  
High Viscosity Oil

We investigate the possibility of increasing the efficiency of extraction of high-viscosity oil combined effect of radio-frequency (RF) electromagnetic (EM) and acoustic fields on the formation and miscible displacement oil solvent. A mathematical model of two-stage impact on the oil reservoir. At the 1st stage, the heating of the formation RF electromagnetic and acoustic field. At the 2nd stage the RF heating of the formation with simultaneous injection of low-viscosity solvent.

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