ISSN 0207-2351
Scientific-technical
journal
OILFIELD ENGINEERING
published
since 1965
January 2021
¹ 1
(625)
12 issues per year
CONTENÒS
|
|
DEVELOPMENT OF OIL
AND GAS-OIL FIELDS
|
|
Nekrasov A.S.,
Vilesova L.A. Application
of the method of multi-factor dispersion analysis when evaluating the initial
position of the oil-water contact of III D2st-ef formation in the
Yarega oil deposit (p. 5‑11)
|
|
METHODS OF PRODUCING
EFFECT ON A DEPOSIT AND RAISING OIL RECOVERY
|
|
Manapov T.F.,
Korabelnikov A.I., Velasquez R., Lara V. Downhole electrical heating dynamic model assessment in
extra-heavy oil reservoir application (p. 12‑23)
|
|
Sharafeev
R.R., Kondratev S.A., Novokreshchennykh D.V., Drozdov S.A., Rakitin E.L.,
Ivanov D.I., Akkuzhin A.A. Experience
in propant hydraulic fracturing without a mini-frac stage (p. 24‑29)
|
|
Astakhova
A.N., Rakhmatullin A.A., Minnullin A.G. Clarification of the mechanism for displacing viscous oil
by water-gas impact under a non-stationary regime (p. 30‑32)
|
|
MATHEMATICAL MODELING
|
|
Eremyan G.A. Influence of the objective
function weighting methods on the automated reservoir model history matching
efficiency (p. 33‑40)
|
|
RESEARCH OF
FORMATIONS AND WELLS
|
|
Zakirov D.R.,
Chernov E.N., Pavlov P.V., Torin S.V. Selection of optimal conditions for recombination of
formation fluids samples (p. 41‑45)
|
|
Zubova E.N.,
Zhil′tsova S.V., Bykov S.E. Study of the process of formation of asphalt-resin-paraffin
substances in laboratory conditions (p. 46‑49)
|
|
Tumanova E.S. An addition to the method of interpreting
the results of laboratory studies of liquid filtration in low-permeable reservoirs (p. 50‑54)
|
|
TECHNIQUE AND
TECHNOLOGY OF OIL PRODUCTION
|
|
Andreev K.V.,
Agupov M.A., Kadykov I.A., Ryazanova E.N. Practical application of integrated models for solving the
problems of optimization of oil and gas production processes (p. 55‑57)
|
|
Ramazanov
I.A., Isaev A.A. Experience
of operating wells complicated by the presence of mechanical impurities in
the well products (p. 58‑63)
|
|
Bakirov D.L.,
Ovchinnikov V.P., Fattakhov M.M., Ovchinnikov P.V., Rozhkova O.V., Babushkin
E.V. Construction of
multilateral (multibranch) wells with horizontal completion (p. 64‑69)
|
|
CORROSION AND
ENVIRONMENT PRESERVATION
|
|
Markin A.N.,
Dorosinsky A.Yu., Blokhin V.A., Manzhosov A.K., Brikov A.V., Markin D.A. Some words on local corrosion (p. 70‑78)
|
|
Information
on the articles
|
|
UDC 622.276.031:532.51(1-04)ÂÍÊ DOI:
10.33285/0207-2351-2021-1(625)-5-11
APPLICATION OF THE METHOD OF MULTI-FACTOR
DISPERSION ANALYSIS
WHEN EVALUATING THE INITIAL POSITION OF THE OIL-WATER CONTACT
OF III D2st-ef FORMATION IN THE YAREGA OIL DEPOSIT (p. 5)
Alexander Sergeevich Nekrasov, Dr. of geol.-mineral. sci., Professor,
Lyubov Anatolievna Vilesova
LUKOIL−Engineering Limited PermNIPIneft
Branch Office in Perm
29, Sovetskaya Armiya str., Perm, 614066,
Russian Federation,
e-mail: Aleksandr.Nekrasov@pnn.lukoil.com;
Ljubov.Vilesova@pnn.lukoil.com
The paper presents the results of studies
carried out to establish the initial position of the oil-water contact (OWC)
in the Eiffel layer of the Middle Devonian (D2st-ef) of the Yarega
oil field. The aim of the study was to determine the surface slope of the OWC
initial position and its dependence on the well location. The problem was
solved by the methods of multivariate analysis of variance. Based on the
results of the conducted analysis, the change in OWC marks revealed the fact
that in reality there observed an increase of OWC over time in the direction
from the north to south and from the west to east.
Keywords: oil-water
contact; analysis of variance; dispersion; variation; combination of factors;
Fisher F-test.
Order this article in the
electronic library
|
|
UDC 622.276.656 DOI:
10.33285/0207-2351-2021-1(625)-12-23
DOWNHOLE ELECTRICAL HEATING DYNAMIC MODEL
ASSESSMENT
IN EXTRA-HEAVY OIL RESERVOIR APPLICATION (p. 12)
Timur Fanuzovich Manapov, Dr. of tech. sci.,
Alexander Igorevich Korabelnikov, Cand. of tech. sci.,
Richard Velasquez,
Petrolera RN
Av. Francisco de Miranda, Centro Ceguros Sud
America, Caracas 1060, Venezuela,
e-mail: TManapov@petrolera.ru;
alkorabelnikov@petrolera.ru; RVelasquez@petrolera.ru
Victor Lara
Computer Modelling Group
Calle Guarico, Edif Altolar, Piso 1, 105,
Colinas de Bellos Monte, Baruta, Caracas, Venezuela,
e-mail: Victor.Lara@cmgl.ca
The paper describes the experience of using a
fully integrated 3D reservoir and discretized mechanistic wellbore simulation
approach in the extra-heavy oil field (Venezuela) in order to estimate the
enhance of the oil productivity index by using resistive/ohmic heating cable.
The impact of downhole heating was estimated to reduce the visco-skin factor
and analyze the interaction between reservoir inflow and wellbore
performance. Numerical simulation of low frequency electrical heating was
performed by use of thermal simulation software with a feature of a wellbore
modeling tool that can couple to the reservoir model. Additionally,
optimization software is used to perform the sensitivity analysis and
automatic optimization studies. The heating cable simulation approach allowed
evaluate the influence of wellbore heating parameters on the highly viscous
extra-heavy oil behavior in the reservoir while increasing the temperature
inside the wellbore. By applying wellbore calculations coupled to the
reservoir simulation, it was possible to understand critical aspects of the
oil and gas flow in the reservoir due to different drawdown along horizontal
well section, pressure lossess along the wellbore due to friction and the
general efficiency of the heating cable.
Keywords: extra-heavy
oil; downhole electrical heating; heating cable; reservoir and well
simulation; visco-skin effect; British thermal unit; near-wellbore heating;
well productivity index.
Order this article in the
electronic library
|
|
UDC 622.276.66 DOI:
10.33285/0207-2351-2021-1(625)-24-29
EXPERIENCE IN PROPANT HYDRAULIC FRACTURING
WITHOUT A MINI-FRAC STAGE (p. 24)
Ramil Radifovich Sharafeev,
Sergey Anatolievich Kondratev,
Dmitry Vyacheslavovich Novokreshchennykh,
Sergey Aleksandrovich Drozdov,
Evgeny Leonidovich Rakitin,
LUKOIL–Engineering Limited PermNIPIneft Branch
Office in Perm
3a, Permskaya str., Perm, 614015, Perm region,
Russian Federation,
E-mail: Ramil.Sharafeev@pnn.lukoil.com;
Sergej.Kondratiev@pnn.lukoil.com; Dmitrij.Novokreschennykh@pnn.lukoil.com;
Sergej.Drozdov@pnn.lukoil.com; Evgenij.Rakitin@pnn.lukoil.com
Denis Igorevich Ivanov
LUKOIL−PERM LLC
62, Lenin str., Perm, Perm region, 614990,
Russian Federation,
e-mail: Denis.I.Ivanov@lp.lukoil.com
Azamat Abrekovich Akkuzhin
LUKOIL−Komi LLC
31, Neftyanikov str., Usinsk, 169712, Komi
Republic, Russian Federation,
e-mail: Azamat.Akkuzhin@lukoil.com
The article considers the experience of
hydraulic fracturing (HF) without a mini-fracturing stage in the fields of
the Perm Territory, the Komi Republic and the Nenets Autonomous Territory.
Stages of hydraulic fracturing technology implementation are described, and
the main defined technological parameters are reflected. The initiative to
eliminate the stages of mini-hydraulic fracturing is mainly aimed at reducing
the cost of hydraulic fracturing operations, while there are associated positive
factors: a decrease in a formation clogging due to a decrease in the volume
of injected chemical reagents, a reduction in the time required for the
hydraulic fracturing operation due to the exclusion of some preparatory work
related to the delivery and heating of the mixing fluid, preparing the gel,
injecting mini-fracturing stage, recording the pressure drop curve and
analyzing the mini-fracturing stage. The results of hydraulic fracturing in
the fields of the Perm Territory, the Republic of Komi and the Nenets
Autonomous Territory are considered in detail. It is proved that the
technology optimization has led to a reduction in the time and cost of work
while ensuring increased technological efficiency and the absence of
hydraulic fracturing aftereffects.
Keywords:
hydraulic fracturing (HF) of a formation; mini-hydraulic fracturing (HF) of a
formation; clogging of a reservoir; reduction of hydraulic fracturing cost;
optimization of HF technology.
Order this article in the
electronic library
|
|
UDC 622.276.42 DOI:
10.33285/0207-2351-2021-1(625)-30-32
CLARIFICATION OF THE MECHANISM FOR DISPLACING
VISCOUS OIL
BY WATER-GAS IMPACT UNDER A NON-STATIONARY REGIME (p. 30)
Anfisa Nailevna Astakhova, Cand. of tech. sci.,
Ainur Akhatovich Rakhmatullin
LLC NPO "Neftegaztekhnologiya"
96/2, Revolutsionnaya str., Ufa, 450078,
Republic of Bashkortostan, Russian Federation,
e-mail: npongt@gmail.com
Andrey Gennadievich Minnullin
CJSC "Aloil"
63, Engels str., Bavly-city, 423930, Republic of
Tatarstan, Russian Federation,
e-mail: aloil116@mail.ru
The paper is devoted to the peculiarities of the
mechanism of water-gas impact (WGI) on the formation during the development
of carbonate reservoirs. Various combinations of technologies elements used
in the displacement of viscous oil by the WGI method are considered on the
example of a separate experimental site with two injection and four
production wells. Based on the research results, an analytical expression of
the displacement coefficient dependence on the volume of the displacing agent
pumping was obtained.
Keywords: water-gas
impact; carbonate reservoir; oil-displacing agent; displacement ratio;
pumping volume.
Order this article in the
electronic library
|
|
UDC 622.276:532:519.876 DOI:
10.33285/0207-2351-2021-1(625)-33-40
INFLUENCE OF THE OBJECTIVE FUNCTION WEIGHTING
METHODS
ON THE AUTOMATED RESERVOIR MODEL HISTORY MATCHING EFFICIENCY (p. 33)
Grachik Araikovich Eremyan
Petroleum Learning Centre of Tomsk Polytechnic
University
4a, Usov str., Tomsk, 634034, Russian
Federation,
e-mail: eremyanga@hw.tpu.ru
The article considers one of the aspects of the
targeted objective function formulation for carrying out an automated history
matching of hydrocarbon reservoirs geological-hydrodynamic models, namely,
choice of weight coefficients. Numerical modeling of a field includes three
basic stages: development of a static geological model, building it on the
basis of a dynamic filtration model as well as iterative process of the
developed geological-hydrodynamic model matching. To carry out history
auto-matching, it is necessary to define the objective function that describes
the discrepancy between simulation results and observed data. The aim of the
work is to study the influence of the targeted function weighting methods on
history matching efficiency based on a synthetic model of an oil reservoir to
develop recommendations for setting the objective function. The novelty of
the study lies in comprehensive study of three types of weighting factors and
identification of conditions for their reasonable use. Based on the results
of this research, recommendations were made regarding the use of objective
function weighting methods in history matching of hydrocarbon reservoir
models.
Keywords: weight
coefficients; objective function; automated history matching; automated
history matching of a model; optimization algorithms; history matching
quality; history matching efficiency; reservoir geological-hydrodynamic
simulation; oil field; numerical model.
Order this article in the
electronic library
|
|
UDC 622.276 DOI:
10.33285/0207-2351-2021-1(625)-41-45
SELECTION OF OPTIMAL CONDITIONS FOR
RECOMBINATION
OF FORMATION FLUIDS SAMPLES (p. 41)
Dmity Radikovich Zakirov, Cand. of chemical sci.,
Evgeny Nikolaevich Chernov,
Pavel Vladimirovich Pavlov,
Sergey Valerievich Torin
SamaraNIPIneft LLC
1, Naberezhnaya reki Samara, Samara, 443036,
Russian Federation,
e-mail: ZakirovDR@samnipi.rosneft.ru
Currently, most of the fields in the Orenburg
region are entering the final stage of development. Extraction is carried
out, as a rule, by pumping. Conditions for taking representative depth
samples are often missing. At the same time, it is impossible to deny the
possibility of changing the properties of the fluid along the strike of the
deposits, as a result of which the study of the properties of reservoir oil
for each well should be carried out constantly, as new areas are drawn into
its drainage zone. If it is impossible to take deep samples, as an
alternative to studying deep oil samples, the preparation of recombined ones
is provided. This raises the problem of choosing the conditions for
recombination, which requires detailed study. Wellhead gas, especially from
wells in fields that are at the final stage of development, differs markedly
from gas of single separation of formation fluid. Therefore, its direct use
during recombination without preliminary preparation can give
unrepresentative results. This paper provides guidelines for correcting this
inconsistency. In this case, it is supposed to use the results of
experiments, as well as archival material on the study of deep samples.
Keywords: oil
fields; oil; gas; depth samples; recombined samples; formation fluids;
saturation pressure; gas content.
Order this article in the
electronic library
|
|
UDC 622.276.72 DOI:
10.33285/0207-2351-2021-1(625)-46-49
STUDY OF THE PROCESS OF FORMATION OF
ASPHALT-RESIN-PARAFFIN SUBSTANCES
IN LABORATORY CONDITIONS (p. 46)
Elena Nikolaevna Zubova, Cand. of chemical sci.,
Svetlana Viktorovna Zhil′tsova,
Stanislav Evgenievich Bykov
LUKOIL–Engineering Limited PermNIPIneft Branch
Office in Perm
29, Sovetskaya Armiya str., Perm, 614066, Perm
region, Russian Federation,
e-mail: Elena.Zubova@pnn.lukoil.com
The paper considers the main factors influencing
the formation of asphalt-resin-paraffin deposits (ARPD) during experiments in
laboratory conditions: physical and chemical properties, temperature, time
and shear rate. The relationship between the physicochemical properties and
the temperature of oil saturation with paraffins of three oil samples,
differing in density, was investigated. The influence of temperature on ARPD
formation by the "cold finger" method and with the help of an SV-10
vibration viscometer and a BROOKFIELD DV-II + PRO rotational viscometer has
been studied. The ranges of paraffins mass crystallization have been
determined. Conclusions are made on the change in the composition and weight
of ARPD formed under different temperature conditions (on a "cold
finger" and in a bath) and sample preparation – with preliminary heating
and without heating, as well as when changing the duration of the process.
The influence of oil shear rate on such indicators as viscosity, shear stress
and oil saturation temperature is estimated.
Keywords: asphalt-resin-paraffin
deposits (ARPD); factors influencing the formation of ARPD; physical and
chemical composition of oil; oil saturation temperature; cold stick method;
shear rate; shear stress; oil viscosity; mechanism for the formation of ARPD.
Order this article in the
electronic library
|
|
UDC 622.276.57 DOI:
10.33285/0207-2351-2021-1(625)-50-54
AN ADDITION TO THE METHOD OF INTERPRETING THE
RESULTS OF LABORATORY STUDIES
OF LIQUID FILTRATION IN LOW-PERMEABLE RESERVOIRS (p. 50)
Ekaterina Sergeevna Tumanova
LUKOIL–Engineering Limited VolgogradNIPImorneft
Branch Office in Volgograd
96, Lenin prosp., Volgograd, 400078, Russian
Federation,
e-mail: katya_timoxina@mail.ru
In recent years, more and more fields with low
permeable reservoirs have been actively developed. It is known that the
development of oil deposits in low-permeable reservoirs is characterized by
the manifestation of abnormal properties of reservoir systems. In case of
reservoir pressure small drop per a unit length, there occurred a deviation
from the law of linear filtration (Darcy's law). This is clearly
confirmed by the results of laboratory studies. It is established that liquid
filtration starts after a certain initial pressure drop (gradient) between
the input and output cross sections of the core samples. The value of the
initial reservoir pressure gradient is an important technological parameter
necessary for evaluating the production capacity of low-permeable reservoirs.
Keywords: low-permeability
reservoir; laboratory experiments; nonlinear filtration; initial pressure
gradient.
Order this article in the
electronic library
|
|
UDC 622.276 DOI:
10.33285/0207-2351-2021-1(625)-55-57
PRACTICAL APPLICATION OF INTEGRATED MODELS FOR
SOLVING THE PROBLEMS
OF OPTIMIZATION OF OIL AND GAS PRODUCTION PROCESSES (p. 55)
Konstantin Vladimirovich Andreev,
Mikhail Andreevich Agupov,
Ilya Andreevich Kadykov,
Elena Nikolaevna Ryazanova
LUKOIL–Engineering Limited VolgogradNIPImorneft
Branch Office in Volgograd
96, Lenin prosp., Volgograd, 400078, Russian
Federation,
e-mail: Konstantin.V.Andreev@lukoil.com
The article overviews the practical aspects of
applying integrated models for solving optimization problems. Examples of
calculations related to the assessment and analysis of a well operation,
assessment of the impact of the gathering and transportation system and
fields development scenarios are given. Conclusions are made about the
effectiveness of the application of the considered approaches.
Keywords: integrated
model; production optimization; well performance analysis; the impact of the
collection and transport systems; field development scenarios.
Order this article in the
electronic library
|
|
UDC 622.276.76 DOI:
10.33285/0207-2351-2021-1(625)-58-63
EXPERIENCE OF OPERATING WELLS COMPLICATED BY THE
PRESENCE
OF MECHANICAL IMPURITIES IN THE WELL PRODUCTS (p. 58)
Ildar Airatovich Ramazanov,
Anatoliy Andreevich Isaev, Cand. of tech. sci.
Sheshmaoil Management company LLC
a/ya 192, P.O. No. 8, Almetyevsk, 423458,
Republic of Tatarstan, Russian Federation,
e-mail: isaeff-oil@yandex.ru
Hydraulic fracturing of a formation causes its
partial destruction, the subsequent operation of wells is frequently
complicated by the release of solid particles (mechanical impurities) from
the bottomhole, as well as by the inflow of loose proppant particles into the
pump. The authors show how the occurrence of mechanical impurities in the
produced fluid affects the operation of downhole installations, and the
number of well maintenance operations. The paper provides information on the
results of measures implemented to prevent mechanical impurities from getting
into the pump, whereupon the situation with wells complicated by mechanical
impurities has significantly improved.
Keywords: mechanical
impurities; proppant; quartz; hydraulic fracturing; clogging.
Order this article in the
electronic library
|
|
UDC 622.24.085.24 DOI:
10.33285/0207-2351-2021-1(625)-64-69
CONSTRUCTION OF MULTILATERAL (MULTIBRANCH) WELLS
WITH HORIZONTAL COMPLETION (p. 64)
Daniyar Lyabipovich Bakirov1,2, Cand. of tech. sci.,
Vasily Pavlovich Ovchinnikov2, Dr. of tech. sci., Professor,
Marsel Masalimovich Fattakhov1,
P.V. Ovchinnikov3,
O.V. Rozhkova2
Eduard Valerievich Babushkin1,2, Cand. of tech. sci.
1LUKOIL–Engineering
Limited KogalymNIPIneft Branch Office in Tyumen
143a, Respublika str., Tyumen, 625026, Russian
Federation,
e-mail: BakirovDL@tmn.lukoil.com;
FattahovMM@tmn.lukoil.com
2Industrial
University of Tyumen
38, Volodarsky str., Tyumen, 625000, Russian
Federation,
e-mail: ovchinnikovvp@tyuiu.ru
3LLC
"LUKOIL–Engineering"
3s1, Pokrovskiy Boulevard, Moscow, 109028, Russian
Federation
The paper shows that to ensure the completeness
of oil recovery from low-permeable reservoirs, it is effective to use
multilateral/multibranch wells with horizontal completion. The technical
schemes of their implementation are analyzed and, on the example of the
conditions of a number of fields in the Western Siberia, technical and
technological solutions for their drilling are recommended.
Keywords: multilateral
(multibranch) well with horizontal completion; interlayers; oil recovery;
drilling; lateral branches.
Order this article in the
electronic library
|
|
UDC 620.193:622.276.012.05 DOI:
10.33285/0207-2351-2021-1(625)-70-78
SOME WORDS ON LOCAL CORROSION (p. 70)
Andrey Nikolaevich Markin, Cand. of tech. sci.,
Anton Yurievich Dorosinskiy, Cand. of tech. sci.,
Vladimir Alekseevich Blokhin, Cand. of tech. sci.,
Alexander Kimovich Manzhosov, Cand. of tech. sci.,
Scientific and Production LLC "Sonar"
135, Ternovsky str., Penza, 440056, Russian
Federation,
e-mail: akkord@sonar.penza.com.ru
Alexander Valerievich Brikov
LLC "Interchem"
10, bld. 2, Ryazansky prosp., Moscow, 109428,
Russian Federation,
e-mail: info@interchem.su
Danila Andreevich Markin
Moscow State University named after M.V.
Lomonosov
1, Leninskie Gory, Moscow, 119991, Russian
Federation
Paper reviews basic aspects of modern corrosion
theory. Mechanisms of corrosion processes are described from electrochemistry
point of view. The main issues and problems of current corrosion mitigation
approach are raised. Solving of these issues will allow to prevent or at
least significantly inhibit corrosion processes. Results of surveying of
various metals for mechanism of local corrosion are provided. Practical
recommendations for prevention of oilfield equipment corrosion are given.
Keywords: local
corrosion; electrochemical corrosion; electrochemical processes; oilfield equipment;
electrode; galvanic couple; corrosion theory.
Order this article in the
electronic library
|
|
NATIONAL UNIVERSITY OF OIL AND GAS
"GUBKIN UNIVERSITY"
Main page of journal
|