ISSN 0207-2351
Scientific-technical journal
OILFIELD
ENGINEERING
published
since 1965
March 2017
¹ 3
12 issues per year
CONTENÒS
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DEVELOPMENT OF OIL AND GAS-OIL FIELDS
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Podyacheva V.E., Kovalev A.A.,
Zinoviev A.M., Ilyin I.V.
Some aspects of formation of a deposit development system containing
viscous-plastic non-newtonian oil (p. 5-8)
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Bakhtiyarov G.A., Volkov V.G.,
Fatkhlislamov M.A., Nurgaliev R.Z. Experience of optimization of reservoir pressure
maintenance system by analyzing current development of oil fields (p. 9-14)
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Yakupov R.F. Specific features of oil
reserves recovery in D2ml formation contact zones of Tuimazy oil field (p. 15-21)
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Marfin E.A., Kravtsov Ya.I.
Abdraschitov, A.A., Galimzyanova A.R. Comparative evaluation of energy efficiency
"thermal" and "cold" methods of heavy oil production (p. 22-26)
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Petrov N.A., Mizyakin Yu.K.,
Pchela K.V., Gilaev G.G., Manasyan A.E., Amirov A.A. Directions of updating the technology of heavy oil
deposits development on the example of Karabikulovsky field (p. 26-32)
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Natarov A.L., Borkhovich S.Yu.,
Matros E.G. Integrated
approach to formation of geological-technical activities program for
additional recovery of oil reserves and the fund in the deposits of Udmurtia
Republic (p. 32-36)
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METHODS OF PRODUCING EFFECT ON A DEPOSIT AND RAISING
OIL RECOVERY
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Orlov N.N., Turiyanov A.R., Zagirov
R.R., Prochukhan K.Yu., Prochukhan Yu.A. Selection of the optimal acid composition for acidizing
low permeable carbonate reservoirs (p. 37-42)
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Gubanov S.I., Olkhovskaya V.A. Crack size prediction during
intensive gas-hydrodynamic stimulation of a formation (p. 43-45)
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Bakhtiyarov G.A., Fatkhlislamov
M.A., Nurgaliev R.Z.
Determination of the optimum number of stages during a formation hydraulic
fracturing in horizontal wells (p. 46-49)
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TECHNIQUE AND TECHNOLOGY OF OIL PRODUCTION
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Manasyan A.E., Kuznetsov R.Yu. Some aspects of hydrocarbons
recovery from blocked reservoir zones by means of wave technologies
application (p. 49-51)
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GATHERING, TRANSPORTATION AND PREPARATION OF OIL,
GAS AND WATER
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Gurbanov A.N. Preparation technologies and a
mathematical model of processes during oil and gas transportation at the
fields (p. 51-56)
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Information on the articles (p. 57-64)
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Information on the articles
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UDC 622.276.1/.4:552.54:622.276.346
SOME ASPECTS OF
FORMATION OF A DEPOSIT DEVELOPMENT SYSTEM
CONTAINING
VISCOUS-PLASTIC NON-NEWTONIAN OIL (p. 5)
V.E. Podyacheva, A.A.
Kovalev, A.M. Zinoviev, I.V. Ilyin
Samara State Technical University (SSTU)
244, Molodogvardeyskaya
str., 443100, Samara, Russian Federation,
tel.: (846) 279-03-64,
e-mail:
aakovalev-74@mail.ru
The
article considers the problem of formation of fields development system that contain
unconventional hydrocarbon reserves represented by small deposits with a high
content of high-molecular components, such as resins, asphaltenes and
paraffins. Typically, this oil exhibits nonlinear nature of filtering in
void, what makes it impossible to use the majority of the known mathematical
models without significant errors in the calculations.
Based
on the field data of high-viscous oil production, efficient reserves
extraction from any of such deposits requires formation of the development system
with account of specific features of the structure and properties of these
deposits and the oil that make them differ from the deposits of
"conventional" oil, as well as provide search and study in each
separate case of the original and non-standard solutions.
The
article presents a methodology of production system formation and
substantiation of wells constructions with account of complicating factors on
the example of one of Samara region deposits composed by carbonate rocks.
Substantiation is based on the calculation methods proposed by the authors
regarding the restrictions of the used materials strength, well construction
technologies and the formation maximum depression. The method is based on the
well-known models of non-Newtonian oil filtration, as well as on the original
proposals of the authors team.
Keywords: high-viscous oil; structural and mechanical properties;
rheological characteristics; energy regime; depression; permeability; flow
rate; horizontal well.
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UDC 622.276.4"722"
EXPERIENCE OF
OPTIMIZATION OF RESERVOIR PRESSURE MAINTENANCE SYSTEM
BY ANALYZING CURRENT
DEVELOPMENT OF OIL FIELDS (p. 9)
G.A. Bakhtiyarov, V.G.
Volkov
JSC
"Slavneft−Megionneftegaz"
51, Kuzmin str., 628680,
Megion-city, Khanty-Mansi autonomous territory − Yugra, Russian Federation,
tel.: (346) 434-92-99,
fax: (346) 434-64-91,
e-mail:
pr@mng.slavneft.ru
M.A. Fatkhlislamov
LLC
NPO "Neftegaztechnologia"
96/2, Revolutsionnaya
str., 450078, Ufa, Republic of Bashkortostan, Russian Federation,
tel.: (347) 228-18-75,
e-mail: npo@ngt.ru
R.Z. Nurgaliev
Almetyevsk State
Petroleum Institute
The
article presents the results of some hydrodynamic calculations to be used for
determination of injection wells’ optimal operating modes in order to enhance
oil production. Noting the generally positive operational results of a
formation pressure maintenance system, it is shown that the local change of
injection modes can significantly increase oil production. Thus, when changing
the volume of water injection in 50 wells, the predicted production is
increased by 78126 thousand m3 with respect to the basic variant
development during the prediction period of 10 years with a maximum decrease
of the formation pressure that does not exceed 25 % of the initial formation
pressure.
Keywords: formation pressure maintenance system; ongoing
development; optimization; production and injection wells.
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UDC 622.276.1/.4
SPECIFIC FEATURES OF OIL
RESERVES RECOVERY
IN D2ml FORMATION
CONTACT ZONES OF TUIMAZY OIL FIELD (p. 15)
Rustem Fazylovich
Yakupov
NGDU
"Tuymazaneft" of LLC "Bashneft–Production"
32, Kuvykin str., 452600,
Oktyabrsky-city, Republic of Bashkortostan, Russian Federation,
tel./fax: (347)
679-38-33,
e-mail:
rustem_geolog@mail.ru
The
article analyzes oil reserves recovery from D2ml formation production sites
located in the Devonian terrigenous stratum of Tuimazy field with a unique
degree of selection of the initial recoverable reserves, long-term
development and characteristic feature of water-oil zones (WOZ) presence,
occupying more than 72 % of the deposit. The basic technological indicators
of a deposit development are described. The dependence of oil recovery factor
(ORF) on the portion of the contact zones area in the blocks of Tuimazy field
D2ml formation, obtained during the development of Tuimazy field D2ml
formation, shows that WOZ area increase of a site or a deposit reduces the
achieved oil recovery factor and the efficiency of oil reserves recovery
while water-oil factor (WOF) grows. Summary of the results of D2ml formation
sites development allowed identifying three typical types of blocks development
and grouping them by WOZ area portion in the total WOZ area.
Correlation
links between WCZ area portion and ORF and WOF parameters for different types
of blocks are obtained. The low and high accumulated WOF of water-floating
sites are accompanied by a high rate of the produced product water-flooding
starting from the site development, high input water-flooding of wells that
penetrated the solid layer with the near-roof oil-saturated part of the
formation due to the formation of water cone.
Keywords: well; water-oil zone; oil reserves recovery;
water-flooding; residual oil reserves; oil recovery factor; water-oil factor;
coning; formation; near-roof oil-saturated part of a formation.
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UDC 622.276.6
COMPARATIVE EVALUATION
OF ENERGY EFFICIENCY
"THERMAL" AND
"COLD" METHODS OF HEAVY OIL PRODUCTION (p. 22)
Evgeny Alexandrovich
Marfin1, 2,
Yakov Isaakovich
Kravtsov1,
Alexey Allanovich
Abdraschitov1,
Aliya Rinatovna
Galimzyanova1
1 Kazan Scientific Centre of the Russian Academy of Sciences (KazanSC of RAS)
2/31, Lobachevsky str.,
420111, Kazan, Republic of Tatarstan, Russian Federation,
tel.: (843) 292-75-05,
e-mail:
marfin_ea@mail.ru
2 Kazan Federal University (KFU)
The
article presents the results of a theoretical comparative evaluation of power
efficiency of "thermal" and "cold" methods applied when
producing high-viscous oil are presented. It is proposed to use relative
power consumption required for high-viscous oil filtration through a porous
medium as an efficiency criterion. The effect of the basic parameters on the
efficiency of such oil production is discussed. The temperature dependence of
oil viscosity, used in calculations, is experimentally determined. The
example of the measured rheological properties of Ashalchinsky field oil
proves the fact that the major factors influencing the efficiency of oil
production methods are temperature dependence of oil viscosity and formation
initial temperature. In particular, it is shown that in the studied range of
parameters when the initial formation temperature exceeds 12 °C the efficiency of oil production "cold" methods is higher than of "thermal"
ones. Increase of deposits development duration brings rise of
"thermal" methods efficiency. "Cold" methods of oil
production are more effective when oil production rate is small and their
efficiency raises with growth of the porous medium permeability. It is shown
that combination of the wave influence with the "cold" methods of
high-viscous oil production can appear more effective, than in combination
with the "thermal" ones.
Keywords: high-viscous oil; oil recovery; thermal effect;
oil-displacing compositions; wave stimulation; viscosity; permeability.
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UDC 622.276.5:665.613.2
DIRECTIONS OF UPDATING
THE TECHNOLOGY
OF HEAVY OIL DEPOSITS
DEVELOPMENT ON THE EXAMPLE
OF KARABIKULOVSKY FIELD
(p. 26)
N.A. Petrov, Yu.K.
Mizyakin, K.V. Pchela
LLC
"SamaraNIPIneft"
18, Vilonovskaya str.,
443010, Samara, Russian Federation,
å-mail:
KirjanovaEV@samnipineft.ru
G.G. Gilaev, A.E.
Manasyan, A.A. Amirov
JSC
"Samaraneftegaz"
50, Volzhsky prosp.,
443071, Samara, Oktyabrsky region, Russian Federation,
tel.: (846) 333-02-32,
å-mail: sng@samng.ru
The
paper presents the first results of determination of extra-heavy oil
rheological properties of Karabikulovsky field, proposes the methods of these
properties accounting as well as demonstrates their effect upon the
technology application efficiency of a formation thermal-gravitation drainage
(FTGD). The paper also discusses the basic ways of FTGD technology updating
related to the possible transfer of steam injection into a formation roof and
use of the devices to equalize the injected steam profile. The authors
illustrate the effect of oil properties heterogeneity along the deposit
cross-section on the development properties, as well as the technological
efficiency of the proposed technologies application.
Keywords: extra-heavy oil; EOR thermal methods; steam assisted
gravity drainage; three-well steam assisted gravity drainage; injectivity
profile; forecast analysis; process indices.
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UDC 622.276.1/.4
INTEGRATED APPROACH TO
FORMATION
OF GEOLOGICAL-TECHNICAL
ACTIVITIES PROGRAM
FOR ADDITIONAL RECOVERY
OF OIL RESERVES AND THE FUND
IN THE DEPOSITS OF UDMURTIA REPUBLIC (p. 32)
A.L. Natarov
JSC
"Belkamneft"
100, Pastukhov str., 426004,
Izhevsk, Republic of Udmurtia, Russian Federation,
e-mail:
natarov@belkam.com
S.Yu. Borkhovich
Udmurt
State University, M.S. Gutzeriev Institute of Oil and Gas
1, Universitetskaya
str., 426034, Izhevsk, Republic of Udmurtia, Russian Federation,
e-mail:
SYBorhovich@yandex.ru
E.G. Matros
LLC
"UDS oil"
21, Lenin str., 426004, Izhevsk, Republic of Udmurtia, Russian Federation,
e-mail:
E.Matros@uds18.ru
The
deposits of Udmurtia Republic are of complex geological structure. Bearing in
mind the reservoirs complexity, highly water-flooded fund and the cost of
work it is necessary to carry out a careful selection of wells for conducting
geological and technical measures (GTM). The conducted geological and
technical analysis helps to identify the efficient GTM depending on their
application conditions. Specialists of the Company developed an integrated
approach to the selection of wells – "Sidetracking", which allows
to update the work of all specialists engaged Geological Survey in this direction.
The company introduced the architecture of a software and information support
of geological-field data collection, analysis, projection and management of
the oil fields development on the basis of OilInfoSystem and Baspro Optima
geological databases as well as Roxar software package of oilfields
three-dimensional modeling. A step-by-step scheme implementing a
comprehensive approach to GTM selection is proposed. The technique allows
selecting the maximum-potential sites to identify wells-candidates for
sidetracking, problematic areas in the fields, areas with unrecovered oil
reserves, ineffectively injected wells as well as forming measures to improve
formations oil recovery, sidetracking and transfer wells for injection.
Keywords: enhanced oil recovery; geological and technical measures;
sidetracking; oil residual reserves; undeveloped areas; integrated approach
to GTM selection.
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UDC 622.276.63
SELECTION OF THE OPTIMAL
ACID COMPOSITION
FOR ACIDIZING LOW
PERMEABLE CARBONATE RESERVOIRS (p. 37)
Nikita Nikolaevich
Orlov,
Aydar Rafitovich
Turiyanov,
Rishat Raisovich
Zagirov,
Konstantin Yurievich
Prochukhan,
LLC
"BashNIPIneft"
86/1, Lenin str., 450006,
Ufa, Republic of Bashkortostan, Russian Federation,
e-mail:
nikolas_orlov@mail.ru
Yury Anatolievich
Prochukhan
Bashkir State University
32, Z. Validy str.,
450076, Ufa, Republic of Bashkortostan, Russian Federation,
tel.: (347) 272-63-70,
e-mail:
dissovet2@rambler.ru
One
of the problems, being recently solved by the oil industry, is the oil
recovery enhancement of low-permeable reservoirs of complex mineralogical
composition. To do this, various technologies of acid treatments of a
formation bottom hole zone are used. Acid treatment make it inevitable to
deal with such specific features as low penetration ability of acids aqueous
solutions when treating low-permeable highly-hydrophilic reservoirs;
intensive secondary sedimentation, irregularity of an acid composition
interaction unevenness with the rock matrix in the volume of the pore space.
The
article presents the results of compositions selection and the study of acid
compositions properties to guarantee the effective treatment (in terms of a
dominant wormhole formation) of low permeable reservoirs with high
water-holding capacity. To solve the problem of an acid composition
optimization (when studying filtration by a core), low permeable carbonate
core, represented by a dolomite limestone, was selected. During testing
several filtration experiments, the purpose of which was to determine the
effect of chemical (concentration of hydrochloric acid solutions, solution
component composition) and physical (injection speed) factors on the change of
the deposit’s core samples permeability, were conducted.
Keywords: acid treatment; dolomite; carbonate reservoir; water
blockade; lower aliphatic alcohols.
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UDC 622.276
CRACK SIZE PREDICTION DURING
INTENSIVE GAS-HYDRODYNAMIC
STIMULATION OF A
FORMATION (p. 43)
S.I. Gubanov, V.A.
Olkhovskaya
Samara State Technical University (SSTU)
244, Molodogvardeyskaya
str., 443100, Samara, Russian Federation,
e-mail: gubanov93@yandex.ru,
valeriaolh@mail.ru
The
article presents the results of determination of a crack geometric parameters
that is formed in the formation during intense gas-hydrodynamic stimulation.
The dependence of the crack size on the pressure of the solid charge’s
combustion products, the amount of flow-rate of the well fluid is shown. The
application of the technology of a formation’s charging gas-dynamic
fracturing in a dual-bore well is proved.
Keywords: a formation’s charging gas-dynamic fracturing;
gas-generating device; crack size; pressure of the generator; dual system of
wellbores; well flow-rate.
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UDC 622.276.66.001.57
DETERMINATION OF THE
OPTIMUM NUMBER OF STAGES
DURING A FORMATION HYDRAULIC
FRACTURING
IN HORIZONTAL WELLS (p.
46)
G.A. Bakhtiyarov
JSC
"Slavneft−Megionneftegaz"
51, Kuzmin str., 628680,
Megion-city, Khanty-Mansi autonomous territory − Yugra, Russian Federation,
tel.: (346) 434-92-99,
fax: (346) 434-64-91,
e-mail: pr@mng.slavneft.ru
M.A. Fatkhlislamov
LLC
NPO "Neftegaztechnologia"
96/2, Revolutsionnaya
str., 450078, Ufa, Republic of Bashkortostan, Russian Federation,
tel.: (347) 228-18-75,
e-mail: npo@ngt.ru
R.Z. Nurgaliev
Almetyevsk
State Petroleum Institute
2, Lenin str., 423450,
Almetyevsk, Republic of Tatarstan, Russian Federation
The
article presents the results of the multi-stage hydraulic fracturing of a
formation (HFF) in horizontal wells. Noting the generally positive result, it
is shown that the step-by-step hydraulic fracturing should be carried out on
smaller ranges of a wellbore length, but sufficient for the formation of
cracks and drainage of oil reserves. It is shown that in case of a
step-by-step HFF profitability ratio should be between 1,5 fraction of unit
and higher.
Keywords: horizontal well; multi-stage hydraulic fracturing of a
formation; range of a wellbore length.
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UDC 622.276.6
SOME ASPECTS OF
HYDROCARBONS RECOVERY
FROM BLOCKED RESERVOIR
ZONES BY MEANS
OF WAVE TECHNOLOGIES
APPLICATION (p. 49)
Artur Edvardovich
Manasyan
JSC
"Samaraneftegaz"
50, Volzhsky prosp.,
443071, Samara, Oktyabrsky region, Russian Federation,
tel.: (846) 333-02-32,
å-mail: sng@samng.ru
Roman Yurievich
Kuznetsov
"Gazprom IP
International", a branch in Saint Petersburg
This
article discusses the possibility of wave technologies application, developed
by "The Scientific Center of Non-linear Wave Mechanics and Technology,
RAS" under the supervision of academician R.F. Ganiev, to provide oil
and gas recovery from a reservoir’s blocked zones. To do this, the problem of
the waves penetration depth into the saturated porous medium of a productive
formation is considered. It becomes important when studying the nature of
physical processes occurring in a rock under the influence of the wave field.
Keywords: wave technologies; productive formation; wave field; wave
exposure.
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UDC 622.279.72+622.279.8+622.691
PREPARATION TECHNOLOGIES
AND A MATHEMATICAL MODEL
OF PROCESSES DURING OIL
AND GAS TRANSPORTATION
AT THE FIELDS (p. 51)
A.N. Gurbanov
NIPI
"Neftegaz" SOCAR
88a, Zardabi prosp.,
AZ1012, Baku, Republic of Azerbaijan,
e-mail:
qabdulaga@mail.ru
When
producing oil by the gas-lift method in offshore fields, some technological
problems related to the liquid phase separation can arise due to the change
of thermodynamic parameters of transportation systems. Furthermore, the
formation of solid hydrated compounds that contribute to plugging of oil and
gas pipelines is observed. These complications result in disturbing the
technological mode of operation of gas-lift wells, oil and gas treatment
facilities, main gas pipelines. Based on the field research results,
calculation of the efficiency of the system of high-pressure gas
transportation to gas-lift wells in conditions of offshore oil and gas
deposits, is conducted. The article presents the results of the calculation
of the optimal operating pressure of high-pressure gas to displace the liquid
phase, precipitated during low-pressure gas transportation between the
deep-water offshore platforms. A method of displacement of the liquid phase,
precipitated from the low-pressure pipeline, using high-viscous elastic and
gel-forming compositions, based on domestically-produced petrochemical
products, is proposed.
Keywords: platform; condensate; liquid phase; pipeline; shear
stress; separator; high-viscous compositions.
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ORGANIZATION, MANAGEMENT AND ECONOMICS OF OIL AND GAS
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