Hard-to-recover reserves of Yugra oil (West Siberia)
Criteria of hard-to-recover reserves, results and opportunities of their using for development in the conditions of Yugra fields are analyzed in the article. В статье анализируются критерии трудноизвлекаемых запасов, результаты и возможности их использования для разработки в условиях югорских местор...
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| Zitieren: | Hard-to-recover reserves of Yugra oil (West Siberia) / V.I. Isaev, S.G. Kuzmenkov, R.Sh. Ayupov, Yu.A. Kuzmin, G.A. Lobova, P.A. Stulov // Геофизический журнал. — 2019. — Т. 41, № 1. — С. 33-43. — Бібліогр.: 27 назв. — англ. |
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| author | Isaev, V.I. Kuzmenkov, S.G. Ayupov, R.Sh. Kuzmin, Yu.A. Lobova, G.A. Stulov, P.A. |
| author_facet | Isaev, V.I. Kuzmenkov, S.G. Ayupov, R.Sh. Kuzmin, Yu.A. Lobova, G.A. Stulov, P.A. |
| citation_txt | Hard-to-recover reserves of Yugra oil (West Siberia) / V.I. Isaev, S.G. Kuzmenkov, R.Sh. Ayupov, Yu.A. Kuzmin, G.A. Lobova, P.A. Stulov // Геофизический журнал. — 2019. — Т. 41, № 1. — С. 33-43. — Бібліогр.: 27 назв. — англ. |
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| description | Criteria of hard-to-recover reserves, results and opportunities of their using for development in the conditions of Yugra fields are analyzed in the article.
В статье анализируются критерии трудноизвлекаемых запасов, результаты и возможности их использования для разработки в условиях югорских месторождений.
У статті аналізуються критерії важко видобувних запасів, результати і можливості їх використання для розробки в умовах Югорський родовищ.
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| format | Article |
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HARD-TO-RECOVER RESERVES OF YUGRA OIL (WEST SIBERIA)
Ãåîôèçè÷åñêèé æóðíàë ¹ 1, Ò. 41, 2019 33
ÓÄÊ 662.276.53(571.12)
Hard-to-recover reserves of Yugra oil (West Siberia)
V. I. Isaev 1,2, S. G. Kuzmenkov 2, R. Sh. Ayupov 2, Yu. A. Kuzmin 3,
G. A. Lobova1, P. A. Stulov3, 2019
1Department of Geology, Tomsk Polytechnic University, Tomsk, Russia
2 Institute of Environmental Management, Yugra State University,
Khanty-Mansiysk, Russia
3 Research and Analytical Center for Rational Use of the Subsoil
named after V. I. Shpilman, Khanty-Mansiysk, Russia
Received 9 November 2018
Ó 2017 ð. íà ÷àñòêó Þãðè ïðèïàäàëî 43,0 % çàãàëüíîðîñ³éñüêîãî âèäîáóòêó íàôòè,
â àáñîëþòíèõ îäèíèöÿõ � 235,3 ìëí ò, ùî ìåíøå íà 3,9 ìëí ò, í³æ ó 2016 ð., ³ íà
43,1 ìëí ò � í³æ ó 2007 ð. Îñíîâíèé îá�ºêò ðîçðîáêè � øåëüôîâ³ ï³ñêîâèêè íåî-
êîìó.  Þãð³ çîñåðåäæåíî 44 % ïðîãíîçíèõ ðåñóðñ³â Ðîñ³¿ êàòåãî𳿠D1 , òîáòî ðå-
ñóðñ³â ó â³äêëàäàõ ³ íà òåðèòîð³ÿõ ç äîâåäåíîþ íàôòîíîñí³ñòþ. Êëþ÷îâèì çàâäàííÿì
äëÿ Þãðè º çàïîá³ãàííÿ çíèæåííþ âèäîáóòêó íàôòè òà éîãî ñòàá³ë³çàö³ÿ. Öüîãî
ìîæíà äîñÿãòè çàâäÿêè àêòèâíîìó çàëó÷åííþ ó ðîçðîáêó âàæêîäîáóâíèõ çàïàñ³â
íàôòè. Ïðîàíàë³çîâàíî êðèòå𳿠òàêèõ çàïàñ³â, ìîæëèâîñò³ ³ ðåçóëüòàòè çàëó÷åííÿ
¿õ ó ðîçðîáêó â óìîâàõ ðîäîâèù Þãðè. Öå ïîêëàäè íàôòè ç àíîìàëüíèìè ô³çèêî-õ³-
ì³÷íèìè âëàñòèâîñòÿìè, ï³äãàçîâ³ çîíè ïîêëàä³â, â³äêëàäè ïëàñòà AB1
1�2 òèïó �ðÿá÷èê�,
à÷èìîâñüêà òîâùà, òþìåíñüêà ñâ³òà, ïîðîäè äîþðñüêîãî êîìïëåêñó ³ áàæåíîâñüêà
ñâ³òà. Ëèøå çà òðüîìà êîìïëåêñàìè (à÷èìîâñüêèì, áàæåíîâñüêèì ³ òþìåíñüêèì) ïðèð³ñò
âèäîáóòêó íàôòè â 2017 ð. äîð³âíþâàâ ìàéæå 4 ìëí ò, ùî ìîæíà ïîð³âíÿòè ç òåìïà-
ìè çíèæåííÿ âèäîáóòêó â ö³ëîìó íà Þãð³. Ïî÷àòêîâ³ ãåîëîã³÷í³ ðåñóðñè áàæåíîâñü-
êîãî êîìïëåêñó îö³íåíî â 11 ìëðä ò, âèäîáóâí³ ðåñóðñè � â 3,1 ìëðä ò. Ïåðøî÷åðãîâå
äæåðåëî ñòàá³ë³çàö³¿ âèäîáóòêó íàôòè â Þãð³ � çàëó÷åííÿ â ðîçðîáêó âàæêîäîáóâíèõ
çàïàñ³â à÷èìîâñüêîãî ³ òþìåíñüêîãî êîìïëåêñ³â. Ìîæëèâå çðîñòàííÿ âèäîáóòêó òàêèõ
çàïàñ³â äîþðñüêîãî êîìïëåêñó, éîãî ð³÷íèé âèäîáóòîê ñòàíîâèòü 2�3 ìëí ò. Ðåñóðñè
áàæåíîâñüêîãî êîìïëåêñó ïîïîâíÿòü ñïàäèñòèé âèäîáóòîê íàôòè äî 2030 ð.
Êëþ÷îâ³ ñëîâà: íàôòîâèäîáóòîê, âàæêîäîáóâí³ çàïàñè, à÷èìîâñüêèé, òþìåíñüêèé,
äîþðñüêèé ³ áàæåíîâñüêèé êîìïëåêñè, Þãðà.
Introduction. In order to maintain the
hydrocarbon production in Russia, there is
a need for new oil production bases. These
bases should be commensurate with the re-
sources of the West Siberian oil producti-
on base, which is based on unique and large
fields (Fig. 1). Such bases are usually iden-
tified in the initial stage of the exploration
of oil and gas provinces. Such oil producti-
on bases have to be through created major
geological exploration financed by the State.
This is convincingly shown in the works of
the Siberian Branch of the Russian Acade-
my of Sciences (SB RAS), headed by acade-
mician A. E. Kontorovich [Kontorovich, 2017;
Kontorovich et al., 2017].
The critical mass of proven reserves re-
quired for the starting large-scale geologi-
cal exploration has not been accumulated
yet either in the East Siberia or on the shelf.
Data of oil resources � the total initial re-
sources (TIR) and the sum of the undisco-
vered and possible (D + C3 categories) re-
sources are presented in Table 1. The re-
doi: 10.24028/gzh.0203-3100.v41i1.2019.158862
V. I. ISAEV, S. G. KUZMENKOV, R. SH. AYUPOV, YU. A. KUZMIN, G. A. LOBOVA, P. A. STULOV
34 Ãåîôèçè÷åñêèé æóðíàë ¹ 1, Ò. 41, 2019
serve indexation by the categories is pre-
sented according to the Russian classifica-
tion, 2008. This is the data of the All-Rus-
sian Research Geological Oil Insitute (AR-
RGOI). ARRGOI has performed an assess-
ment of the hydrocarbon resources in 2014.
The order of figures is comparable to all
territories (excluding the Far East shelf) for
the undiscovered resources of D3 catego-
ry. But resources of D3 category (in areas
with unproved oil presence) are only 1.5 of
13.2 billion tons in Yugra, and only 9.1 of
12.5 billion tons in the Arctic Waters. Al-
most half (44 %) of the prospective resour-
ces (D2 category) of Russia is concentrated
in Yugra (these are resources of sediments
and territories with proved oil). So far, in
the Water Areas only the unproved resour-
ces are taken into account. There were se-
veral large deposits discovered in the East
Siberia in the Soviet times. But at the mo-
ment there are no major discoveries. The
pipeline system �Eastern Siberia � Pacific
Ocean� (ESPO) should be largely based on
reserves in West Siberia. This is the opini-
on of academician A. E. Kontorovich and
his colleagues [Kontorovich et al., 2018].
Therefore, Yugra will remain the main re-
source base of oil and gas industry in Rus-
sia for many years to come. The key chal-
lenge for the Yugra oil industry is to pre-
vent a decline in the oil production. Such
problem was formulated by A. V. Shpilman
in the plenary talk at the Yugra regional
conference in November, 2011. Later, as-
pects and directions of the solution of this
strategic objective were published in the
periodical [Tolstolytkin, Shpilman, 2014].
The solution can be obtained by expand-
ing the geological exploration geography.
Their goal is to account some �new� oil re-
serves, increase the oil recovery factor (RF),
at least to the Russian average level, and
actively involve hard-to-recover (HTR) re-
serves in the development.
Materials and Methods. A retrospective
analysis of the oil production has been per-
formed in Yugra since 1964. The detailed
research has been done since 2008. Sub-
surface Resources Management and Natu-
ral Resources Department data of the Yug-
ra Government (Subsurface Resources Ma-
nagement Department of Yugra) and Yug-
ra Autonomous Institution �V. I. Shpilman
Research and Analytical Centre for the Ra-
tional Use of the Subsoil� were used.
Analysis of the oil production in Yugra.
Oil production in Russia was 546.7 million
tons in 2017. This is 0.1 % less than in 2016.
In 2017, the Yugra�s share of the all-Rus-
sian production was 43.0 %. At the end of
2016, this indicator was 43.7 % (Fig. 2).
As of January 1, 2018 the cumulative pro-
duction was 11,443 million tons since the
beginning of Yugra�s oil fields development
in 1964. The Neocom shelf sandstones are
the main development object.
As of January 1, 2018 in total 483 oil and
gas fields has been discovered, 257 of them
are under development according to the Sub-
T a b l e 1 . Total initial resources of Hydrocarbon Crude (HC) by categories D3 + D2
(billion tons)
Area Total initial
resources HC D3 + D2
Yugra 35.5 13.2
Eastern Siberia (Krasnoyarsk Territory,
Irkutsk Region, Yakutia) 14.6 11.3
Yamalo-Nenets Autonomous District 14.7 8.8
Arctic water areas 13.0 12.5
Far East water areas 2.3 1.8
HARD-TO-RECOVER RESERVES OF YUGRA OIL (WEST SIBERIA)
Ãåîôèçè÷åñêèé æóðíàë ¹ 1, Ò. 41, 2019 35
Fig. 1. Overview map of the West Siberian oil and gas province, from the message A. M. Brekhun-
tsov, B. V. Monastyrev, and I. I. Nesterov (Jr.) [Brekhuntsov et al., 2011]: 1�3 fields (1 � gas and
gas condensate, 2 � oil-gas and oil-gas condensate, 3 � oil); 4�6 border (4 � West Siberian
petroleum province, 5 � areas of identified oil and gas content, 6 � West Siberian geosyneclise).
Red outline � the territory of the Yugra.
V. I. ISAEV, S. G. KUZMENKOV, R. SH. AYUPOV, YU. A. KUZMIN, G. A. LOBOVA, P. A. STULOV
36 Ãåîôèçè÷åñêèé æóðíàë ¹ 1, Ò. 41, 2019
Fig. 2. Trend of annual oil production in the Yugra from the beginning of development work
(the use of the data Department of Subsoil Use of Yugra, 2018).
Fig. 3. Prognosis and actual annual oil production in Yugra (the data was used from the
�Scientific and Analytical Center for Rational Use of the Subsoil named after V. I. Shpilman�).
Fig. 4. Trend of annual oil production from deposits of the Bazhenov-and-Abalak play in Yugra.
HARD-TO-RECOVER RESERVES OF YUGRA OIL (WEST SIBERIA)
Ãåîôèçè÷åñêèé æóðíàë ¹ 1, Ò. 41, 2019 37
surface Resources Management Department
of Yugra.
There are 123 fields with recoverable re-
serves of more than 1.0 billion tons in the
licensed areas of Yugra at various stages of
exploration. Within the unlicensed areas 91
fields with recoverable reserves of more
than 0.3 billion tons are registered in the
State Balance of Mineral Resources.
In 2017, oil production amounted up to
235.3 million tons of oil in Yugra. This is
1.6 % loss than in 2016, or loss 3.9 million
tons in absolute units. It should be noted
that in 2016�2017 there was a tendency
to reduce the rate decline in the oil pro-
duction compared to the last reporting pe-
riod. This is explained by the new techno-
logies to enhanced oil recovery and well sti-
mulation, also the «new» fields are actively
put on production.
As of June 1, 2018 110 enterprise sub-
soil users are carrying out geological exp-
loration of subsurface resources and hydro-
carbon production in Yugra. Thirty six of
them are part of seven vertically integrat-
ed companies and seventy four companies
are independent. 98.9 % of the total oil pro-
duction in Yugra are owned by major oil
companies (JSC �OC �Rosneft�, OJSC �Sur-
gutneftegas�, PJSC �LUKOIL�, OJSC OGC
�Slavneft�, PJSC �Gazprom Neft�, �Salym
petroleum development N. In.�, PJSC �Russ-
Neft�, OJSC �Tomskneft� VNK, JSC �Bash-
neft�). Only 1.1 % of oil is produced by 14
independent companies.
In 2017, 14 major fields accounted for
51.7 % of oil production, where each of them
produced more than 3 million tons. The lar-
gest volume of oil is produced in the Priob-
skoye field � more than 36 million tons
(JSC �OC �Rosneft� + PJSC �Gazprom Neft�),
almost 19 million tons at the Samotlor field
(JSC �OC �Rosneft�), 9.2 million tons at
the Prirazlomnoye field (JSC �OC �Rosneft�)
and 8.5 million tons at the Fedorov field
(OJSC �Surgutneftegaz�). In 2008, propo-
sals were prepared for the energy strategy
of Yugra up to 2020 and for the future. The
experts of the �Research and Analytical Cent-
re for the Rational Use of the Subsoil named
after V. I. Shpilman� have made the fore-
cast of the oil production decline in Yugra
up to 2030 (Fig. 3). The graph indicates that
the forecast (the most probable option) was
fully confirmed as of 2018.
Discussion of the analysis of the state
oil production. As follows from the analy-
sis, the oil production decline in Yugra is
predictable and logical process. The main
reasons for the decline in oil production
are listed as follows:
1) a significant part of the mature oil fields
are characterized by a decline in oil pro-
duction;
2) well drilling moves into the peripheral
segments on fields, where low-producti-
vity zones are not able to compensate for
the working;
3) oil production in the largest fields which
make a significant contribution to the to-
tal production in Yugra (Samotlor, Fedo-
rov, West Salym, Tevlinsko-Russkinskoe,
Vatyeganskoye, Mamontovskoye fields)
is significantly reduced;
4) recently, more and more small fields have
been discovered in Yugra, whereas the
discovery of new major oil fields is unli-
kely to happen;
5) recently, the discovered and put to pro-
duction targets are usually low-produc-
tive, with mostly HTR oil reserves.
If the rate of decline in the oil produc-
tion in Yugra continues as projected (See
Fig. 3), then the production will be 220 mil-
lion tons by 2020, and production will de-
crease up to 196 million tons by 2030. What
should be done to stabilize oil production in
Yugra? There is an answer in our opinion.
Prevention of a decline in the output of
the Yugra�s oil industry can be obtained in
the following areas:
1) to expand the geography of geological
exploration to prospect �new� oil reserves;
2) to prepare and begin the industrial de-
velopment of 214 fields in licensed and
unlicensed areas with hydrocarbon re-
serves of about 1.5 billion tons in the ne-
ar future;
3) to increase and lift the oil RF, at least to
the Russian average level;
V. I. ISAEV, S. G. KUZMENKOV, R. SH. AYUPOV, YU. A. KUZMIN, G. A. LOBOVA, P. A. STULOV
38 Ãåîôèçè÷åñêèé æóðíàë ¹ 1, Ò. 41, 2019
4) to actively involve HTR in the develop-
ment .
We will focus on the last point, elabora-
ting it in details.
Analysis of hard-to-recover oil reserves
in West Siberia. The Central Commission
for the Mineral Development of the Russi-
an Federal Mineral Resources Agency (CCR
Rosnedra) published the project called �Hard-
to-recover reserves Classification (HTR)� in
2005. The reasons can be divided into two
components: natural and man-made in ac-
cordance with the �Classification ...� which
oil reserves belong for HTR. There is ne-
cessary to use geological, technological and
economic criteria for determining deposits
belonging to the group of HTR. Geological
criteria for hard-to-recover are sufficiently
formalized in the �Classification ...� by oil
properties. These criteria include: viscosity
(> 30 MPa ⋅s) and bituminosity (density at
20 °C > 0.895 g/cm3), oil paraffin content
(> 6 %) and oil sulfur content (> 3.5 %). These
parameters and their cut-off values take in-
to account hydrocarbon production tech-
nology, transportation, refining, its integrat-
ed using. And these parameters are contai-
ned in the deposit characteristics of the Sta-
te Mineral Resource Balance of the Russi-
an Federation (State Balance of Russia).
According to the data of the State Balan-
ce of the Russian Federation, it is possible
to reliably estimate the share and charac-
teristics of the HTR reserves using only the
above-mentioned geological criteria. Accor-
ding to other geological criteria, there are
no formalized criteria in the data of the Sta-
te Balance of Russia. The exception is per-
meability, however, less than half of the de-
posits in the State Balance is characterized
by its value.
The following seven groups of deposits
of HTR were identified on the basis of ab-
normal oil and gas properties, the unfavo-
rable reservoir characteristics, the types of
contact zones (oil-formation water, oil-gas
cap), technological reasons (depletion) and
geological factors in the Yugra fields.
1. Oil pools with abnormal physical and
chemical properties: deposits of high visco-
sity (> 30 mPa ⋅ s), bituminosity (density at
20 °C > 0.895 g/cm3), high-paraffin (> 6 %)
and high-sulfur (> 3.5 %) oil.
2. Sediments of the 21
1AB − reservoir com-
monly called �Hazel Grouse�: sharp lateral
and vertical lithological heterogeneity, thin
interbedding of various shapes and sizes of
sand and clay inclusions, RF < 0.230.
3. Rocks of the Pre-Jurassic play: belon-
ging of deposits to a complex of Basement
and rocks of Permo-Triassic; lateral and ver-
tical heterogeneity of the reservoir proper-
ties, the dominant cavernous-pore-fractured
reservoir, RF < 0.230.
4. Tyumen Formation: mosaic structure
of the section with a high subsurface inho-
mogeneity (various sizes and shapes of the
reservoir lens in the thickness of clay rocks),
a lot of �sleeve-like� isolated sand bodies, a
high layered and zonal filtration inhomo-
geneity of sediments, RF < 0.230.
5. Achimov Formation: oil pools are con-
fined to complex traps of the wedge-shaped
structure, inhomogeneous interlensing of silt-
stones, sandstones and argillaceous shale;
the heterogeneous construction of the reser-
voir along the lateral and section; mainly
low reservoir properties, RF < 0.230.
6. Under-gas-cap zone of deposits: oil and
gas condensate pools with oil rims of small
thickness (about 4 m), RF < 0,230.
7. Bazhenov Formation: belonging to the
Bazhenov suite; complex geological struc-
ture of pools with sharp lateral and vertical
heterogeneity of the reservoir; three types
of the secondary reservoir porosity � po-
rous-fractured, fractured and cavernous-
fractured with low reservoir properties.
The cutoff of the RF is equal to 0.230 for
the referring deposits of a complex geolo-
gical structure to the HTR. The cutoff of
the RF is determined by a group of experts
of the �Research and Analytical Centre for
the Rational Use of the Subsoil named af-
ter V. I. Shpilman� [Polukeev et al., 2013].
The actual differentiation by geological pa-
rameters of the deposits of Yugra HTR oil
is presented in Table 2.
Discussion of analysis of hard-to-recover
reserves. According to the latest official ex-
HARD-TO-RECOVER RESERVES OF YUGRA OIL (WEST SIBERIA)
Ãåîôèçè÷åñêèé æóðíàë ¹ 1, Ò. 41, 2019 39
pert assessment, TIR of the Yugra deposits
of the Bazhenov-and-Abalak plays are esti-
mated as 11 billion tons. The recoverable
resources are estimated as 3.1 billion tons.
The recoverable reserves (C1 + C2 catego-
ries) are estimated as 500 million tons. At
the same time just over 11 million tons of
oil were produced from the Bazhenov For-
mation during 50 years of industrial deve-
lopment. This is a small part of the resources
registered in the State Balance of Mineral
Resources by Russian Federation.
In 2017, according to the Subsurface Re-
sources Management Department of Yug-
ra (Fig. 4, See p. 36) only 536 thousand
tons of oil were produced from the Bazhe-
nov Formation. This indicates that the ef-
fective exploration of HTR oil of Bazhenov
deposits is possible with an active long-term
State policy. The cost of implementing or-
ganizational and technological innovations
in the realization of the Bazhenov Project
for 8�9 years is estimated at 4.5 billion rub-
les by S. G. Kuzmenkov [Kuzmenkov, 2014].
Production from Bazhenov-and-Abalak For-
mations should be 25 million tons of oil per
year by 2030. Bazhenov�s resources can be
involved in the development and fill the
falling production trend in the West Sibe-
ria up to the thirties of this century.
The scientists of Tomsk [Lobova et al.,
2016; Belozerov et al., 2018], Tyumen [Zub-
kov, 2017] and Moscow discuss great pros-
pects of Bazhenov resources [Skvorcov et
al., 2018]. The presence of oil in the Bazhe-
nov Formation was discovered at the Prav-
T a b l e 2 . Internals of practical referring oil deposits to the HTR reserves (the data
of the Scientific and Analytical Center for Rational Subsoil, 2014)
HTR reserves
characteristic
Condi-
tions
for oil
recovera-
bility
factor
Oil
recovery
factor,
fr. unit
Effective
oil
height,
m
Factor of
porosity,
fr. unit
Oil-
saturation
factor,
fr. unit
Pemea-
bility,
µm2
Oil properties
(viscosity,
bituminosity,
paraffin and
sulfur content)
HTR 0.258 3.6 0.203 0.59 0.190
All 0.319 5.2 0.218 0.441 0.215
�Hazel Grouse�
HTR 0.211 3.1 0.202 0.425 0.054
All 0.205 10.1 0.133 0.628 0.170Pre-Jurassic
play HTR 0.194 10.1 0.139 0.604 0.182
All 0.231 3.9 0.156 0.552 0.022Tyumen
Formation HTR 0.209 3.1 0.153 0.546 0.014
All 0.258 3.5 0.176 0.511 0.700Achimov
Formation HTR 0.199 3.4 0.173 0.506 0.065
All 0.373 4.3 0.233 0.553 0.192Under-gas-cap
zone
of deposits HTR 0.221 3.5 0.237 0.509 0.169
Bazhenov
Formation
HTR 0.245 3.4 0.173 0.506 0.065
V. I. ISAEV, S. G. KUZMENKOV, R. SH. AYUPOV, YU. A. KUZMIN, G. A. LOBOVA, P. A. STULOV
40 Ãåîôèçè÷åñêèé æóðíàë ¹ 1, Ò. 41, 2019
dinsk field in 1967. After that, oil deposits
in bituminous mudstone were discovered in
other areas of the Western Siberia. Scientists
of SB RAS had studied the extent of bitu-
minous Bazhenov Formation from 0.7�1.0
million km2 [Ryzhkova et al., 2018]. To date,
the active development of HTR reserves of
complex Bazhenov deposits is an important
challenge for the industry. The first results
were reported by scientists and experts from
St. Petersburg [Prishhepa, Averjanova, 2013],
Khanty-Mansiysk and Tyumen [Kuzmin et
al., 2014; Shpilman et al., 2015], Tomsk and
Novosibirsk [Parnachev et al., 2016; Isaev
et al., 2018 a, b].
The Bazhenov Formation is not the only
potentially productive object of the HTR
reserves of the sedimentary mantle section
in the West Siberian petroleum province.
The deposits of the Achimov Formation of
the Neocom play have a multi-billion tons
potential. Here, recoverable reserves are es-
timated as more than 2 billion tons. The Ty-
umen Formation has a huge potential, its
deposits with HTR reserves are more than
5 billion tons of oil. Reservoir of Tyumen
Formation, as reported G. Lobova [Lobova,
2015] has mainly continental genesis. This
leads to a deterioration of the reservoir pro-
perties compared to the Neocom shelf sand-
stone, which is the main production target
in Yugra. The oil production of the Achi-
mov play, characterized by A. R. Kurchi-
kov and V. N. Borodkin [Kurchikov, Borod-
kin, 2011] , has increased five-fold since
2000 and amounted to 21 million tons in
2017. Oil production from Tyumen Forma-
tion (considering HTR reservers) has incre-
ased to 26 million tons. Since 2000 oil pro-
duction has increased by 10 times. The geo-
logists of Tyumen Petroleum Research Cen-
ter [Gorobets et al., 2010] characterized zo-
nes with a �Hazel Grouse� texture. These
zones include 10 deposits with initial oil in
place (IOIP) of about 0.2 billion tons. The
main part of these deposits is located in the
Greater Samotlor fields. As of June 1, 2018
the cumulative production of HTR oil from
these productive zones was slightly over 1.5
million tons.
Pre-Jurassic play (PJuP) includes about
50 pools in the Yugra fields. These fields
are located in the western part of the dis-
trict. The IOIP of fields of Pre-Jurassic play
are about 0.5 billion tons. The main part of
the reserves is concentrated in the Triassic
rocks and the Crust of weathering. The as-
sessment accuracy of the parameters of de-
posits and reserves are low due to the comp-
lex lithological and mineralogical composi-
tion of rocks and reservoir type. During all
the period of production of Yugra deposits
from the above-mentioned deposits with HTR
reserves, the total oil production is about 3%
of their initial recoverable reserves and the
hundredths of percent of total oil produc-
tion in the district.
At the same time, the following has been
noted.
One of the actual sources supporting the
stability of oil production level in Yugra was
active involvement of deposits if HTR re-
serves in the reservoir development. In 2017,
the increase in oil production for only three
plays (Achimov, Bazhenov-and-Abalak and
Tyumen) was almost 4 million tons. This is
higher or comparable with the rate of de-
cline in the oil production in general for
Yugra.
In case of PJuP, there is no increase in
Yugra oil production. Nevertheless, the an-
nual production is 2�3 million tons, and
the cumulative production from PJuP for
all time amounts to more than 32 million
tons. As the researchers of SB RAS [Konto-
rovich, 2007], Moscow State University [Ab-
lya et al., 2008; Timurziev, 2018] and Tomsk
Polytechnic University [Koveshnikov et al.,
2016; Lobova et al., 2018 a, b] discuss, PJuP
can be one of the sources of oil production
stabilization.
Conclusions. Summing up the current sta-
te of the Yugra oil and gas industry, we can
stay the following.
1. In the past and the present, and well
into the future Yugra is the main base of
oil production in Russia for many years.
2. The involvement of deposits with
HTR reserves shows that the rate of de-
cline in Yugra oil production can be sta-
HARD-TO-RECOVER RESERVES OF YUGRA OIL (WEST SIBERIA)
Ãåîôèçè÷åñêèé æóðíàë ¹ 1, Ò. 41, 2019 41
bilized and also stopped.
3. It is necessary to actively involve
HTR in industrial development, includ-
ing deposits of Achimov, Bazhenov, Aba-
lak, Tyumen formations, oil of PJuP.
4. It is important the experimental sci-
entific and production sites to be estab-
lished and function, primarily for the in-
troduction of exploration technologies for
deposits of the Bazhenov-and-Abalak oil
and gas plays.
The most significant HTR oil reserves
are located in Russia. The recoverable re-
serves of HTR are 20 billion tons, whereas
the resources amount to 140 billion tons. To
date, the active development of HTR depo-
sits of the Bazhenov-and-Abalak plays is an
important challenge for the industry.
Acknowledgments. The authors thank
Hard-to-recover reserves of Yugra oil (West Siberia)
V. I. Isaev, S. G. Kuzmenkov, R. Sh. Ayupov, Yu. A. Kuzmin,
G. A. Lobova, P. A. Stulov, 2019
In 2017, the Yugra�s share of the all-Russian production was 43.0 %, it�s 235.3 million
tons in absolute units. This is 3.9 million tons less than in 2016 and 43.1 million less
than in 2007. The Neocom shelf sandstones are the main development object. 44 % of
the expected resources of Russia in prospective D1 category reserves (resources of se-
diments and territories with proven oil) are concentrated in Yugra. The key challenge
for the oil industry of Yugra is prevention of decline and the stabilization of oil produc-
tion. It can be obtained by the active involving hard-to-recover reserves to the develop-
ment. Criteria of hard-to-recover reserves, results and opportunities of their using for
development in the conditions of Yugra fields are analyzed in the article. These are oil
deposits with abnormal physical and chemical properties, under-gas-cap zone of depo-
sits, sediments of the AB1
1�2 reservoir �Hazel Grouse� of type, Achimov Formation, Tyu-
men Formation, rocks of the Pre-Jurassic play and Bazhenov Formation. Increase in the
oil production for only three plays (Achimov, Bazhenov-and-Abalak and Tyumen) was
almost 4 million tons in 2017. This is comparable with the rate of decline in oil produc-
tion for Yugra in general. Geological initial resources of the Bazhenov play are estimat-
ed at 11 billion tons, recoverable oil resources, at 3.1 billion tons. The primary source of
the stabilization of oil production level in Yugra is involvement in the development of
hard-to-recover reserves of Achimov and Tyumen plays. The production growth of the
hard-to-recover reserves of the Pre-Jurassic play is possible. Now its annual production
is 2�3 million tons. Resources of Bazhenov play will replenish the declining produc-
tion trend by 2030.
Key words: oil production, hard-to-recover reserves, Achimov, Tyumen, Pre-Jurassic
and Bazhenov plays, Yugra.
Sergey A. Filatov Director of the Subsurfa-
ce Resources Management and Natural Re-
sources Department of the Yugra Govern-
ment, and Alexander V. Shpilman Director
of the Autonomous Institution of Yugra �Re-
search and Analytical Centre for the Ratio-
nal Use of the Subsoil named after V. I. Shpil-
man�, for the opportunity to use geological
information, and Tatyana D. Karminskaya
the rector of Yugorsk State University for
her attention and support of the research.
Funding Statement. The research was
funded by the Yugra State University allo-
cated under the grant for the establishment
of a leading research school �Solution of
technical and technological problems of de-
velopment of oil and gas fields and anthro-
pogenic transformation of the Arctic terri-
tories natural environment�.
V. I. ISAEV, S. G. KUZMENKOV, R. SH. AYUPOV, YU. A. KUZMIN, G. A. LOBOVA, P. A. STULOV
42 Ãåîôèçè÷åñêèé æóðíàë ¹ 1, Ò. 41, 2019
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|
| id | nasplib_isofts_kiev_ua-123456789-158486 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0203-3100 |
| language | English |
| last_indexed | 2025-12-07T18:12:37Z |
| publishDate | 2019 |
| publisher | Інститут геофізики ім. С.I. Субботіна НАН України |
| record_format | dspace |
| spelling | Isaev, V.I. Kuzmenkov, S.G. Ayupov, R.Sh. Kuzmin, Yu.A. Lobova, G.A. Stulov, P.A. 2019-09-03T18:07:29Z 2019-09-03T18:07:29Z 2019 Hard-to-recover reserves of Yugra oil (West Siberia) / V.I. Isaev, S.G. Kuzmenkov, R.Sh. Ayupov, Yu.A. Kuzmin, G.A. Lobova, P.A. Stulov // Геофизический журнал. — 2019. — Т. 41, № 1. — С. 33-43. — Бібліогр.: 27 назв. — англ. 0203-3100 DOI: 10.24028/gzh.0203-3100.v41i1.2019.158862 https://nasplib.isofts.kiev.ua/handle/123456789/158486 662.276.53(571.12) Criteria of hard-to-recover reserves, results and opportunities of their using for development in the conditions of Yugra fields are analyzed in the article. В статье анализируются критерии трудноизвлекаемых запасов, результаты и возможности их использования для разработки в условиях югорских месторождений. У статті аналізуються критерії важко видобувних запасів, результати і можливості їх використання для розробки в умовах Югорський родовищ. en Інститут геофізики ім. С.I. Субботіна НАН України Геофизический журнал Hard-to-recover reserves of Yugra oil (West Siberia) Трудноизвлекаемые запасы нефти Югры (Западная Сибирь) Важко видобувні запаси нафти Югри (Західний Сибір) Article published earlier |
| spellingShingle | Hard-to-recover reserves of Yugra oil (West Siberia) Isaev, V.I. Kuzmenkov, S.G. Ayupov, R.Sh. Kuzmin, Yu.A. Lobova, G.A. Stulov, P.A. |
| title | Hard-to-recover reserves of Yugra oil (West Siberia) |
| title_alt | Трудноизвлекаемые запасы нефти Югры (Западная Сибирь) Важко видобувні запаси нафти Югри (Західний Сибір) |
| title_full | Hard-to-recover reserves of Yugra oil (West Siberia) |
| title_fullStr | Hard-to-recover reserves of Yugra oil (West Siberia) |
| title_full_unstemmed | Hard-to-recover reserves of Yugra oil (West Siberia) |
| title_short | Hard-to-recover reserves of Yugra oil (West Siberia) |
| title_sort | hard-to-recover reserves of yugra oil (west siberia) |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/158486 |
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