ISSN 0207-2351
Scientific-technical journal
OILFIELD
ENGINEERING
published
since 1965
November
2015
¹ 11
12 issues per year
CONTENÒS
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Pichugin O.N., Solyanoy P.N.,
Gavris A.S., Kosyakov V.P., Kosheverov G.G. Updating of fields development systems on the basis of complex
analysis of the information about low-amplitude tectonic faults (p. 5-15)
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Rodionov S.P., Kosyakov V.P.,
Pyatkov A.A. Investigation
of the effect of water injection rate on the dynamics of oil production rate
from fractured-porous media using new decline curves (p. 16-20)
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Kosyakov V.P., Zelenin D.V. Improvment of
"TatNIPIneft" technique to calculate oil recovery in the fields
with crack-pore type of a reservoir (p. 21-25)
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Kosyakov V.P., Pyatkov A.A. The research of influence of fracture
aperture in the simulation development fractured porous reservoir (p. 25-29)
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Kosyakov V.P., Musakaev E.N.,
Shirshov Ya.V. Computational
technology of material balance calculation of an oil field (p. 30-35)
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Gaydamak I.V., Pichugin O.N. Analysis and prediction of
success of a formation hydraulic fracturing when applying the method of
decision trees (p. 35-41)
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Vladimirov I.V., Varisova R.R.,
Abilkhairov D.T. Influence
of conditions of the technology applied to level injection profile on the
efficiency of multi-layer formations development (p. 42-47)
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Vladimirov I.V., Veliev E.M. Study of the dependence of
non-stationary water-flooding technology efficiency on the
"starting" water-flooding and duration of the half-period
work/idleness of injection wells in a cycle when developing highly-productive
heterogeneous reservoirs with low-viscous oil (p. 47-56)
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Vladimirov I.V., Pichugin O.N.,
Veliev E.M. Technology of
a formation non-stationary simulation that envisages periodic operation of producing
and injection wells in in the antiphase (p. 56-59)
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Rodionov S.P., Kosyakov V.P.,
Sokolyuk L.N., Shirshov Ya.V. Fast simulation method of cyclic water-flooding using averaged two
phase flow equations (p. 59-64)
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Markov P.V., Rodionov S.P. Application of porous media
microstructure models when calculating filtration characteristics for hydrodynamic
models (p. 64-75)
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Gavris
A.S., Kosyakov V.P., Botalov A.Yu., Pichugin O.N., Rodionov S.P., Sokolyuk
L.N., Shirshov Ya.V. The
concept of effective design of hydrocarbon fields development. Software solutions (p. 75-85)
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Information on the articles (p. 86-92)
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Information on the articles
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UDC 622.276.1/.4; 622.276.43
UPDATING OF FIELDS
DEVELOPMENT SYSTEMS
ON THE BASIS OF COMPLEX
ANALYSIS OF THE INFORMATION
ABOUT LOW-AMPLITUDE
TECTONIC FAULTS (p. 5)
Oleg Nikolaevich Pichugin1,
Cand.
phys.-math. sc., General Director,
Pavel Nikolaevich Solyanoy1,
Alexander Sergeevich Gavris2,
Deputy-General
director,
Vitaly Petrovich Kosyakov1,3,
Cand.
phys.-math. sc.,
Georgy Georgievich Kosheverov1
1 LLC "CONCORD"
10, bld.3, Dmitrovsky proezd, 127422, Moscow, Russian Federation,
tel./fax: 8 (495) 748-41-35,
å-mail: pichuginon@ccord.ru
2 "UNI-CONCORD",
Ltd.
142, office 309, Respublika str., 625000, Tyumen, Tyumen region, Russian Federation,
tel./fax: (345) 252-97-59,
å-mail: rodionovsp@bk.ru
3 S. Khristianovich
Institute of Theoretical and Applied Mechanics, SB RAS – Khristianovich ITAM
SB RAS, Tyumen branch
74, Taimyrskaya str., 625026, Tyumen, Russian Federation
The
paper, using the criterion of Nelson, shows that Western Siberia deposits
with reservoir terrigenous type can be characterized by of fractures’
significant influence on the reserves extraction. Technological indicators of
wells work and GIS data, which allow specifying the location of decompression
zones, are proposed as an addition to the seismic attributes. Based on the
analysis of one of the deposits development, strong dependence of operational
indicators on the system of wells placement in a tectonically faulted
collector is shown. Technological efficiency of water-flooding systems
transformation with account of decompression zones localization at the late
stage of development is shown as well.
Key words: fractured reservoirs; Nelson criterion; transformation of
water-flooding system; disjunctive violations; wells with abnormal flow
rates; seismic attributes.
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UDC 622.276.031:532.51(1-04); 622.276.342
INVESTIGATION OF THE
EFFECT OF WATER INJECTION RATE
ON THE DYNAMICS OF OIL
PRODUCTION RATE FROM FRACTURED-POROUS
MEDIA USING NEW DECLINE
CURVES (p. 16)
Sergey Pavlovich Rodionov1,2, Dr. phys.-math. sc.,
Vitaly Petrovich Kosyakov1,2,
Cand.
phys.-math. sc.,
Alexander Alexandrovich Pyatkov1,2,3,
post-graduate
student
1 "UNI-CONCORD",
Ltd.
142, office 309, Respublika str., 625000, Tyumen, Tyumen region, Russian Federation,
tel./fax: (345) 252-97-59,
e-mail: rodionovsp@bk.ru
2 S. Khristianovich
Institute of Theoretical and Applied Mechanics, SB RAS – Khristianovich ITAM
SB RAS, Tyumen branch
74, Taimyrskaya str., 625026, Tyumen, Russian Federation
3 Tyumen State University
10, Semakov str., 625003, Tyumen, Tyumen region, Russian Federation
According
to some experts’ opinion, many of Russia’s reservoirs are either of a
fractured-porous media or of a strongly inhomogeneous media with fractures
signs (based on Nelson criterion). Since the prediction of oil production
based on the method of decline curves characteristics is common and
effective, it is of interest to apply this method to study and forecast oil
recovery from fractured-porous media. The paper deals with the obtained
decline curves characteristics based on the equations of two-phase (oil, water)
flow in fractured-porous media. The obtained decline curves characteristics
helped to study the influence of injection rate on oil production.
Key words: water flooding decline curves; fractured-porous
reservoir.
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UDC 622.276.344
IMPROVMENT OF
"TATNIPINEFT" TECHNIQUE TO CALCULATE OIL RECOVERY
IN THE FIELDS WITH
CRACK-PORE TYPE OF A RESERVOIR (p. 21)
Vitaly Petrovich Kosyakov1,2,
Cand.
phys.-math. sc.,
Dmitry Valerievich Zelenin1,2,3
1 "UNI-CONCORD",
Ltd.
142, office 309, Respublika str., 625000, Tyumen, Tyumen region, Russian Federation,
å-mail: hammer-rav@mail.ru
2 S. Khristianovich
Institute of Theoretical and Applied Mechanics, SB RAS – Khristianovich ITAM
SB RAS, Tyumen branch
74, Taimyrskaya str., 625026, Tyumen, Russian Federation,
tel./fax: (345) 252-97-59
3 Tyumen State University
10, Semakov str., 625003, Tyumen, Tyumen region, Russian Federation
A
number of modifications, which allow to correctly account of the relative permeability,
fracturing, injection of hot water as well as irregularity of wells
localization in conditions of a real oil field are brought in the
"TatNIPIneft" method. The calculation for one of the Kazakhstan oil fields is carried out. An assessment of the final oil recovery factor for a
field with account of fracturing and hot water injection is presented; a
dependence of oil recovery factor on wells localization density is built.
Key words: method of "TatNIPIneft"; oil recovery factor;
surface efficiency; coefficient of water-flooding; fractured-porous
reservoir; hot water injection; wells localization density; well log
interpretation data.
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UDC 622.276.1/.4.001.57
THE RESEARCH OF
INFLUENCE OF FRACTURE APERTURE
IN THE SIMULATION
DEVELOPMENT FRACTURED POROUS RESERVOIR
(p. 25)
Vitaly Petrovich Kosyakov1,2,
Cand.
phys.-math. sc.,
Alexander Alexandrovich Pyatkov1,2,3,
post-graduate
student
1 "UNI-CONCORD",
Ltd.
142, office 309, Respublika str., 625000, Tyumen, Tyumen region, Russian Federation,
tel./fax: (345) 252-97-59,
e-mail: hammer-rav@mail.ru
2 S. Khristianovich
Institute of Theoretical and Applied Mechanics, SB RAS – Khristianovich ITAM
SB RAS, Tyumen branch
74, Taimyrskaya str., 625026, Tyumen, Russian Federation,
tel./fax: (345) 252-97-59
3 Tyumen State University
10, Semakov str., 625003, Tyumen, Tyumen region, Russian Federation
Fractures
aperture influence on the water-flooding effectiveness of fractured-porous
reservoirs using the model of double porosity-permeability and discrete model
of fractures is researched. The influence of water injection rate on oil
extraction process in a fractured-porous reservoir is studied.
Key words: dual porosity-permeability model; discrete model of
fractures network; fractured-porous reservoir; fracture aperture; rate of
water-injection; oil recovery factor; hydrodynamic modeling; reservoir
engineering.
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UDC 622.276.031:532.5:517.949
COMPUTATIONAL TECHNOLOGY
OF MATERIAL BALANCE CALCULATION
OF AN OIL FIELD (p. 30)
Vitaly Petrovich Kosyakov1,2,
Cand.
phys.-math. sc.,
Emil Nailevich Musakaev1,2,3,
post-graduate
student,
Yakov Vladimirovich Shirshov1,2,3,
post-graduate
student
1 "UNI-CONCORD",
Ltd.
142, office 309, Respublika str., 625000, Tyumen, Tyumen region, Russian Federation,
tel./fax: (345) 252-97-59,
e-mail: hammer-rav@mail.ru
2 S. Khristianovich Institute
of Theoretical and Applied Mechanics, SB RAS – Khristianovich ITAM SB RAS,
Tyumen branch
74, Taimyrskaya str., 625026, Tyumen, Russian Federation,
tel./fax: (345) 252-97-59
3 Tyumen State University
10, Semakov str., 625003, Tyumen, Tyumen region, Russian Federation
The
paper proposes some computational technology of material balance calculation
at some sites of an oil field with account of liquid flows among them. The
computational technology helps to determine the average reservoir pressure of
each site, the efficiency coefficient of useful water injection and the
coefficient characterizing the activity of the bottom water. The proposed
technology was applied to analyze the material balance of one of the fields
in Kazakhstan.
Key words: oil field; material balance; identification; sector
modeling; fuzzy sets.
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UDC 622.276.66
ANALYSIS AND PREDICTION
OF SUCCESS OF A FORMATION
HYDRAULIC FRACTURING
WHEN APPLYING THE METHOD
OF DECISION TREES (p.
35)
Inna Vladimirovna Gaydamak, researcher,
Tyumen State University
10, Semakov str., 625003, Tyumen, Tyumen region, Russian Federation
"UNI-CONCORD",
Ltd.
142, office 309, Respublika str., 625000, Tyumen, Tyumen region, Russian Federation,
tel./fax: (345) 252-97-59,
e-mail: GaydamakIV@mail.ru
Oleg Nikolaevich Pichugin, Cand. phys.-math. sc.,
General Director
LLC "CONCORD"
10, bld. 3, Dmitrovsky proezd, 127422, Moscow, Russian Federation,
tel./fax: 8 (495) 748-41-35,
å-mail: PichuginON@ccord.ru
Possible
application of the decision trees method to select candidate wells for
conducting a formation hydraulic fracturing is researched in the paper. Some
method of indicators’ identification that significantly affects the success
of a formation hydraulic fracturing is described. It is found that increase
of the spatial density of the conducted hydraulic fracturing of a formation
has negative effect on the subsequent hydraulic fracturing. Some technique of
the prediction quality perfection by applying the method of varying of the
success threshold quantity is suggested.
Key words: decision trees; decision forests; Student criterion;
hydraulic fracturing of a formation; classification.
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UDC 622.276.1/.4
INFLUENCE OF CONDITIONS
OF THE TECHNOLOGY
APPLIED TO LEVEL
INJECTION PROFILE ON THE EFFICIENCY
OF MULTI-LAYER
FORMATIONS DEVELOPMENT (p. 42)
I.V. Vladimirov, Dr. tech. sc.,
professor, Deputy-General Director
LLC "CONCORD"
10, bld. 3, Dmitrovsky proezd, 127422, Moscow, Russian Federation,
tel./fax: 8 (495) 748-41-35,
å-mail: igorv@ufamail.ru
R.R. Varisova, lecturer
Ufa State Oil Technical University, branch in Sterlitamak
2, Oktyabrya prosp., 453118, Sterlitamak, Republic
of Bashkortostan, Russian Federation,
tel.: (347) 324-25-12
D.T. Abilkhairov, Cand. tech. sc.
LLP
"SOUTH-OIL"
25, Tole bi str., 160000, Shymkent-city, Republic of Kazakhstan,
tel.: (725) 254-91-22,
å-mail: abilkhairov@south-oil.com
The
paper, on the basis of numerical simulation, proves the fact that the
effectiveness of the injection profile alignment (IPA) of an injection well
is highly dependent on the order of the technology application. If there is a
low-permeable non-recovered layer in a reservoir section, IPA use should be
preceded by the above-said formation shutdown to avoid being hit by plugging
agent’s penetration into it. It is shown that, otherwise, the IPA positive
effect is of a short time, followed by a significant deterioration of the oil
extraction process. For the case discussed, oil losses in the accumulated oil
production amounted to 1 % for the entire period of development or 8 % for
the period after carrying out of IPA. In case of the address impact (with
prior shutdown of a low-permeable layer) decrease of permeability of
high-permeable layers leads to a real injection profile alignment of an
injection well, thus producing some positive effect on the dynamics of
technological parameters of a site development. For the case considered, oil
increase in the accumulated oil production made 1,9 % for the whole period of
development or 15 % for the period after carrying out of IPA. It is clear
that preliminary shutdown of a low-permeable layer increases the cost of the
IPA technology use. Economic evaluation of the options considered showed that
IPA option with preliminary isolation of a low-permeable layer is preferable.
Key words: flow diverting technologies; injection profile alignment.
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UDC 622.276.1/.4; 622.276.43"5"
STUDY OF THE DEPENDENCE
OF NON-STATIONARY WATER-FLOODING
TECHNOLOGY EFFICIENCY ON
THE "STARTING" WATER-FLOODING AND DURATION
OF THE HALF-PERIOD
WORK/IDLENESS OF INJECTION WELLS IN A CYCLE
WHEN DEVELOPING
HIGHLY-PRODUCTIVE HETEROGENEOUS
RESERVOIRS WITH
LOW-VISCOUS OIL (p. 47)
I.V. Vladimirov, Dr. tech. sc.,
Professor, Deputy-General Director
LLC "CONCORD"
10, bld. 3, Dmitrovsky proezd, 127422, Moscow, Russian Federation,
tel./fax: 8 (495) 748-41-35,
å-mail: igorv@ufamail.ru
E.M. Veliev, engineer of the 1st
category
"Institute of
Problems of Energy Resources Transportation" RB
144/3, Oktyabrya prosp., 450055, Ufa, Republic of Bashkortostan, Russian Federation
The
experience of use of non-stationary water-flooding technology in the
operational sites of Kumkol field revealed one of its major problems such as
the uncertainty when choosing the "starting" point of use of
non-stationary water-flooding technology (namely, the degree of
water-flooding when the technology remains effective) and the duration of the
half-cycle work/idleness of injection wells. Hydrodynamic modeling proves the
following:
1. Non-stationary water-flooding is
effective at any "starting" water-watering;
2. The longer is the half-cycle,
the more rapid and to a greater extent is the change of technological
parameters of a field development – production rate and water-flooding of the
site;
3. Existence of the negative
efficiency time-period of non-stationary water-flooding technology is noted;
4. Increase of oil recovery
coefficient (COR) is positive for any duration of half-cycle
operation/idleness of injection wells.
Key words: non-stationary water flooding; heterogeneous permeability
of a reservoir; hydrodynamic modeling.
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UDC 622.276.1/.4; 622.276.43"5"
TECHNOLOGY OF A FORMATION
NON-STATIONARY SIMULATION THAT
ENVISAGES PERIODIC
OPERATION OF PRODUCING AND INJECTION WELLS
IN THE ANTIPHASE (p. 56)
I.V. Vladimirov, Dr. tech. sc.,
Professor, Deputy-General Director,
O.N. Pichugin, Cand. phys.-math. sc.,
General Director
LLC "CONCORD"
10, bld. 3, Dmitrovsky proezd, 127422, Moscow, Russian Federation,
tel./fax: 8 (495) 748-41-35,
å-mail: igorv@ufamail.ru
E.M. Veliev, engineer of the 1st
category
"Institute of
Problems of Energy Resources Transportation" RB
144/3, Oktyabrya prosp., 450055, Ufa, Republic of Bashkortostan, Russian Federation
The
experience of use of non-stationary water-flooding technology in the
operational sites of Kumkol field revealed that one of its problems is high
current water-flooding of the extracted product. The natural evolution of the
non-stationary water-flooding technology becomes periodical operation of
producing wells (in the antiphase to the injection wells). The results of
hydrodynamic calculations, presented in the paper, showed that the
non-stationary water-flooding in combination with the periodic operation of
producing wells is positively efficient in reservoirs with a wide range of
values of permeable heterogeneity. During water-flooding both in the
injection and in removal areas due to various reasons (permeable
heterogeneity, gravitational separation of phases) there appears some contact
surface between the water-flooded and the oil-saturated areas which have
different diffusivity. Non-stationary simulation (non-stationary
water-flooding + periodic operation) allows to intensify the exchange of
fluids between these areas thus ensuring positive technological effect. Of
course, the value of this effect is different for permeably heterogeneous and
highly heterogeneous reservoirs, i.e. it essentially depends on the value of
permeable heterogeneity. Thus, use of water cyclic injection with periodic
operation of producing wells in the antiphase allows not only producing
additional oil, but also reducing the volume of produced water, which is an
important condition of modern Kumkol field development.
Key words: non-stationary water flooding; permeably heterogeneous
reservoir.
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UDC 622.276.43"5"
FAST SIMULATION METHOD OF
CYCLIC WATER-FLOODING
USING AVERAGED TWO PHASE
FLOW EQUATIONS (p. 59)
Sergey Pavlovich Rodionov1,2,3,
Dr.
phys.-math. sc.,
Vitaly Petrovich Kosyakov1,2,
Cand.
phys.-math. sc.,
Lyubov Nikolaevna Sokolyuk1,2,
Cand.
phys.-math. sc.,
Yakov Vladimirovich Shirshov1,2,3,
post-graduate
student
1 "UNI-CONCORD",
Ltd.
142, office 309, Respublika str., 625000, Tyumen, Tyumen region, Russian Federation,
tel./fax: (345) 252-97-59,
e-mail: rodionovsp@bk.ru
2 S. Khristianovich Institute
of Theoretical and Applied Mechanics, SB RAS – Khristianovich ITAM SB RAS,
Tyumen branch
74, Taimyrskaya str., 625026, Tyumen, Russian Federation
3 Tyumen State University
10, Semakova str., 625003, Tyumen, Tyumen region, Russian Federation
The
cyclic water-flooding is the cheapest method of enhanced oil recovery.
However, the cyclic water-flooding hydrodynamic simulation is more
computationally expensive than the ordinary water-flooding simulation. It is
due to the fact that simulation time step should be much less than half of
the cycle period.
The
paper proposes some flow equations averaged over the cycle period in case of
a periodic (sinusoidal) law of change of flow rates or bottom hole pressure
at wells that are free of this restriction on the time step. This allows
calculating the cyclic water-flooding in the time comparable to the time,
required for ordinary water-flooding calculation. A special procedure for
determining of the averaged equations parameters on the basis of the simplified
solution of the ordinary equations is proposed.
Comparison
of the results of the calculations based on the averaged and conventional
(used in reservoir hydrodynamic simulators) equations of two-phase flow is
performed on a synthetic example and at one of the sites of Kazakhstan fields.
Key words: cyclic water-flooding; averaged equations; reservoir
hydrodynamic simulation.
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UDC 622.276.1/.4.001.57
APPLICATION OF POROUS
MEDIA MICROSTRUCTURE MODELS
WHEN CALCULATING
FILTRATION CHARACTERISTICS
FOR HYDRODYNAMIC MODELS
(p. 64)
Pavel Vladimirovich Markov, post-graduate student,
Sergey Pavlovich Rodionov, Dr. phys.-math. sc.
Tyumen State University
10, Semakov str., 625003, Tyumen, Tyumen region, Russian Federation,
e-mail: markov.pv@mail.ru
"UNI-CONCORD",
Ltd.
142, office 309, Respubliki str., 625000, Tyumen, Tyumen region, Russian Federation,
tel./fax: (345) 252-97-59,
e-mail: rodionovsp@bk.ru
S. Khristianovich
Institute of Theoretical and Applied Mechanics, SB RAS – Khristianovich ITAM
SB RAS, Tyumen branch
74, Taimyrskaya str., 625026, Tyumen, Russian Federation
The
article presents some approach to the porous media definition using pore
network models as well as identifies the methods of data obtaining for their
constructions such as: computed micro-tomography, reconstruction of
three-dimensional images of porous media by using two-dimensional images of a
thin rock section. The method of calculation of different filtration
characteristics of porous media using these models, namely, capillary
pressure, relative phase permeability, etc., is described. The method of pore
network models generation on the basis of their parameters distributions
(pores and capillary radii, coordination numbers, etc.) is presented. The
general scheme of pore network models to be used for big areas of oil and gas
formations is also proposed.
Key words: microstructure of porous media; pore network model;
relative phase permeability; capillary pressure; computed microtomography of
core; reconstruction of three-dimensional pore space image; thin section
image.
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UDC 622.276.1/.4.001.57
THE CONCEPT OF EFFECTIVE
DESIGN
OF HYDROCARBON FIELDS
DEVELOPMENT.
SOFTWARE SOLUTIONS (p.
75)
Alexander Sergeevich Gavris1, Deputy-General
Director,
Vitaly Petrovich Kosyakov1,2,
Cand.
of phys.-math. sc.,
Andrey Yurievich Botalov1,2,
Cand.
of phys.-math. sc.,
Oleg Nikolaevich Pichugin1,
Cand. of
phys.-math. sc., General Director,
Sergey Pavlovich Rodionov1,2,3,
Dr. of
phys.-math. sc.,
Lyubov Nikolaevna Sokolyuk1,2,
Cand.
of phys.-math. sc.,
Yakov Vladimirovich Shirshov1,2,3,
post-graduate
student
1 "UNI-CONCORD",
Ltd.
142, office 309, Respublika str., 625000, Tyumen, Tyumen region, Russian Federation,
tel./fax: (345) 252-97-59,
e-mail: rodionovsp@bk.ru
2 S. Khristianovich
Institute of Theoretical and Applied Mechanics, SB RAS – Khristianovich ITAM
SB RAS, Tyumen branch
74, Taimyrskaya str., 625026, Tyumen, Russian Federation
3 Tyumen State University
10, Semakov str., 625003, Tyumen, Tyumen region, Russian Federation
The
principles which help to develop hydrodynamic models are formulated. A
concept of efficient reservoir engineering is suggested and a variant of its
implementation in the form of a set of software solutions is presented.
Key words: designing of fields development; modeling; software;
uncertainty; upscaling; upgridding; simulator; irregular grid.
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JSC "ALL-RUSSIAN SCIENTIFIC-RESEARCH INSTITUTE OF
ORGANIZATION, MANAGEMENT AND ECONOMICS OF OIL AND GAS
INDUSTRY"
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