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| Exploration. Geology and Geophysics |
09.12.11
E.E. Kozhevnikova, T.V. Karaseva. Features of oil deposits formation in terrigenous Devonian complex of the Perm region southern part. Electronic scientific journal "Oil and Gas Business", 2011, Issue 5, pp. 302-317. http://www.ogbus.ru/authors/Kozhevnikova/Kozhevnikova_1.pdf ![]()
In article geological and geochemical data of the Perm region Devonian terrigenous oil deposits formation are discussed. On the basis of considerable statistical material it is proved that the main southern part hydrocarbon generation zones could be connected with the Kama - Kinel depression deposits. The formation of oil deposits could occur during the migration of hydrocarbons down or as a result of a favorable hypsometric match of Upper Devonian source rocks and the Devonian terrigenous deposits.
Keywords: oil deposit, terrigenous devon, source rocks, oil migration, organic matter, biomarkers
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09.12.11
M.V. Rykus, M.V. Snachev, E.A. Bazhin. Anorogenic granites of western slope of the Southern Urals: composition, petrogenesis, mineralization. Electronic scientific journal "Oil and Gas Business", 2011, Issue 5, pp. 282-301. http://www.ogbus.ru/authors/Rykus/Rykus_2.pdf ![]()
Geological setting, composition, pttrogenesis and mineralization of western slope of the Southern Urals granitic massifs are considered. Granitic massifs belong to anorogenic intraplate setting. Two perspective industrial types of anorogenic granites are revealed in Uraltau megazone: 1) F-bearing rare-metalic leucogranites with geochemical specialization for Nb, U, Th, Be and industrial specialization for Ta, and 2) pegmatitic rock-crystal-bearing muscovite granites.
Keywords: continental rift, A-type granites, leucogranites, neoproterozoic, megazone, Southern Urals, pegmatite, rare-metalic mineralization
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08.12.11
V.N. Fedorov, A.V. Sveshnikov, M.A. Ihsanov, I.R. Bashirov. Qualitative structure evaluation of the formation fluid flowing to certain intervals of well bore in heterogeneous stratum. Electronic scientific journal "Oil and Gas Business", 2011, Issue 5, pp. 271-281. http://www.ogbus.ru/authors/Fedorov/Fedorov_2.pdf ![]()
Traditional approaches to the study of inclined, sloping, horizontal and multilateral wells with high anisotropy and average number of permeable intervals are ineffective so there is a need for an integrated approach to the study of such objects. While interpreting wellbore study results it is important to know not only productive well bore interval but also the phase of formation fluid flowing from each of the producing intervals, as well as the contribution of each interval to the total well production.
Thermohydrodynamic research allows to determine the qualitative structure of the formation fluid of each stratum part.
Keywords: well, thermohydrodynamic investigations of wells, multiwall wells, horizontal well, composition of inflow
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08.12.11
A.A. Paporotnaya, A.A. Yaroshenko. Quantitative characteristics of the oil and gas Mesozoic East-Stavropol Depression. Electronic scientific journal "Oil and Gas Business", 2011, Issue 5, pp. 254-260. http://www.ogbus.ru/authors/Paporotnaya/Paporotnaya_1.pdf ![]()
The article, based on information about the facies-genetic type of organic matter, its degree of catagenetic conversion, oil-gas-source strata thickness and organic carbon content in the rocks was calculated amount of hydrocarbons generated and emigrated with three-genetic method. The results indicate the high oil and gas potential of the Mesozoic deposits of the East Basin and the Stavropol can reasonably plan for exploration work in the investigated territory.
Keywords: resources, generation, immigration, oil and gas
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12.09.11
V.N. Smirnov, A.V. Novokreshchin. Example of an approach to evaluation of laterally variable seismic wavelet . Electronic scientific journal "Oil and Gas Business", 2011, Issue 4, pp. 122-127. http://www.ogbus.ru/eng/authors/SmirnovVN/SmirnovVN_1e.pdf ![]()
http://www.ogbus.ru/authors/SmirnovVN/SmirnovVN_1.pdf ![]()
One of the most critical parameters affecting the quality of interpretation of seismic data and seismic inversion procedures is a seismic wavelet, as well as stationary of its areal features. The article offers an approach to evaluation of laterally variable wavelet parameters and also map evaluations in case of analysis by 3D seismic data.
Keywords: seismic wavelet, deconvolution, autocorrelation, amplitude-frequency spectrum, peak frequency
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13.05.11
S.A. Bulgakov. Study of Pashiysky horizon layers by statistically distributed express method. Electronic scientific journal "Oil and Gas Business", 2011, Issue 2, pp. 222-231. http://www.ogbus.ru/authors/Bulgakov/Bulgakov_1.pdf ![]()
The paper presents the results of well study using statistically distributed method and gives the qualitative evaluation of reservoir rock. The fractured and porous formation structures, belonging to Terrigenous Devonian deposits and their relations with tectonic structural features are analyzed basing upon the oil field examples of Samara region. The paper also provides the recommendations for taking the obtained results into account while choosing the field development pattern.
Keywords: statistically distributed method, fractured formation structure, tectonic structural features, well flow rate, oilfield development system
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09.12.10, S.G. Bychkov, V.M. Neganov, A.V. Michurin
OIL-AND-GAS GEOLOGICAL ZONING OF PERM TERRITORY
http://www.ogbus.ru/authors/Bychkov/Bychkov_2.pdf (in Russian)
New models of the crystal basement and the palaeozoic complex of Perm Territory were created. The oil-and-gas geological zoning of the palaeozoic complex were completed taking into account a new compound tectonic scheme. Main directions of a new oil-and-gas exploration were determined.
Keywords: geophysical methods, basement, sedimentary cover, oil, gas, zoning, Perm Territory
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08.12.10, A.Yu. Kotenev
SPECIFICS OF GEOLOGICAL STRUCTURE AND OIL RESERVES RECOVERY IN HETEROGENEOUS RESERVOIRSOF PERMIAN-BASHKIRIAN DEPOSITS
http://www.ogbus.ru/authors/KotenevAYu/KotenevAYu_1.pdf (in Russian)
http://www.ogbus.ru/eng/authors/KotenevAYu/KotenevAYu_1e.pdf
Permian-Bashkirian arch fields are characterized by non-uniform recovery of oil reserves, which could be associated with hard-to-recover reserves. Main part is formed by deposits with small oil net pay, low values of permeability, porosity and high viscosity. Accomplished analysis and juxtaposition of reserves recovery maps with heterogeneity maps allow to identify zones with the highest expected coefficients of oil recovery, which is a priority in field development designing.
Keywords: oil reserves, permeability, porosity, oil saturation, terrigenous reservoir, carbonate rocks
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06.12.10, N.G. Nurgalieva, A.G.Nuriev, N.M.Khasanova , A.V. Kalcheva, E.A.Korolev
LITHOLOGICAL AND MINERALOGICAL ASPECTS OF RESERVOIR ROCKS IN "INCISED-VALLEY" COMPLEX
http://www.ogbus.ru/authors/Nurgalieva/Nurgalieva_4.pdf (in Russian)
In present paper new litholigical and mineralogical data have been received for Tournasian and Visean oil reservoir rocks within "incised-valley" zone of Eastern Part of Melekess Depression. These data allowed to reveal influence of sedimentologic and diagenetic factors (rock leaching, quartz grain corrosion and clasterization, carbonate origin and composition) on reservoir properties of rocks.
Keywords: Visean "incised-valley", Bobrikovskian sandstones, Tournesian and Visean carbonates, lithological and mineralogical composition, properties of reservor rocks.
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21.10.10, I.K. Ivanova
ADAMANTANES IN THE CONTINENTAL CONDENSATES OF THE VILUISKAYA SYNECLISE (YAKUTIA)
http://www.ogbus.ru/authors/Ivanova/Ivanova_3.pdf (in Russian)
For the first time the adamantane and its homologues are identified in gas condensates of the Vilyuiskaya syneclise by the GC-MS. These investigations allowed to determine the peculiarities of C10-C14 adamantane distribution in condensates of Srednevilyuiskaya gas field.
Keywords: permian-triassic gas condensates, tricyclic hydrocarbons, homologues
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19.05.10, R.Y. Aliyarov, V.N. Lunina, R.A. Ramazanov
THE ESTIMATION OF RESERVOIR ROCK RESISTIVITY CHANGES DURING DEVELOPMENT OF OIL AND GAS DEPOSITS
http://www.ogbus.ru/authors/Aliyarov/Aliyarov_1.pdf (in Russian)
Reviewed relation between tortuosity and main petrophysical features of South-Caspian basin reservoir rocks based on analysis of experimental research results. Analytical model derived for rock resistivity change during depletion of reservoir considering changes of saturation, porosity and structural coefficients.
Keywords: resistivity, tortuosity, cementation factor (m), water saturation exponent (n)
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10.03.10, M.M. Petrov
GENERALIZATION AND ANALYSIS OF OILFIELD DATA AND RECOMMENDATIONS FOR PETROLIUM ACCUMULATION SEARCH IN OSINSKY BEDROCK
http://www.ogbus.ru/authors/PetrovMM/PetrovMM_1.pdf (in Russian)
The main criteria of hydrocarbon saturation in Osinsky bedrock are analysed in this article. The analysis are held for wells development and testing. Priority directions of local petroleum accumulation estimate in Osinsky bedrock within Nepsko-Botuobinsky anticlise are planned.
Keywords: Osinsky bedrock, Nepsko-Botuobinsky anticlise, petroleum accumulation, electrometric model
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17.11.09, Bagirov Bagir Ali, Garagezov Elmir Shahin, Abdullayeva Lala Akper, Hajiyev Aqarza Masud
OIL FIELDS CLASSIFICATION ACCORDING TO ARTIFICIAL NEURAL NETWORK AND CLUSTER ANALYSIS
(on an example of Absheron archipelago fields)
http://www.ogbus.ru/authors/Bagirov/Bagirov_1.pdf (in Russian)
Oil fields classification problem was deal in an abstract as a very important issue for efficiently development of oil fields. Researched task was done in 2 steps on an example 137 oil fields of Absheron archipelago.
Oil fields classification by drive regime according to field-geological features was done on first stage. It was detected that 39 developed objects is dissolved gas drive, 72 - combined and 26 have fuzzy derive. Artificial neural network could detect that 15 of 26 has almost dissolved gas drive and 11 - combined.
Cluster analyses based on field-geological data was sorted same kind of type objects group on second stage of researches. It could give recommendation for enhanced its development actions. Decision of this kind of tasks was shown on an example 83 developed objects which have combined drive.
Keywords: oil field, natural drive, classification, artificial neural network, cluster analysis
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16.10.09, Giuseppe Etiope
A GLOBAL DATASET OF ONSHORE GAS AND OIL SEEPS: A NEW TOOL FOR HYDROCARBON EXPLORATION
http://www.ogbus.ru/eng/authors/Etiope/Etiope_1.pdf
Petroleum seeps have historically been important drivers of global petroleum exploration. Still today they can serve as direct indicators of gas and/or oil subsurface accumulations. In particular the assessment of the origin of seeping gas is a key task for understanding, without drilling, the subsurface hydrocarbon potential, genesis and quality, e.g. the presence of shallow microbial gas, deeper thermogenic accumulations, the presence of oil and non-hydrocarbon undesirable gases (CO2, N2, H2S). Low quality, biodegraded petroleum can also be recognised, before drilling, through specific geochemical features of the seeping gas.
Seeps are then indicators of tectonic discontinuities (faults) and fractured rocks; they can also represent geo-hazards and sources of greenhouse gas (methane) and photochemical pollutants (ethane and propane).
A new global dataset of onshore gas and oil seeps (GLOGOS) is here presented. GLOGOS includes more than 1150 seeps from 84 countries (version August 2009) and it is continuously updated and expanded. The data-set includes geographical and gas-geochemical data (molecular and isotopic composition of the main gases). Many seeps are recently discovered or never reported in other data-bases. Seeps are catalogued by country and classified in three types: gas seeps, oil seeps and mud volcanoes. All seeps have a bibliographic or www reference. GLOGOS is a unique tool for hydrocarbon exploration, assessment of Total Petroleum Systems and geo- structural studies..
Keywords: petroleum seeps, natural gas, data-set, methane, gas-geochemistry
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10.08.09, E.N. Sultanova, O.E. Kuchurina
THE INTERPLAY BETWEEN DEPOSITIONAL ENVIROMENT AND RESERVOIR PROPERTIES OF ACHIMOV FORMATION BY THE EXAMPLE OF POKACHOV CLINOFORM (WEST SIBERIA)
http://www.ogbus.ru/authors/Sultanova/Sultanova_1.pdf (in Russian)
This article gives to the sedimentation interrelation of achim reservoirs and petrophisicals properties target unit. We recognized the fundamental models curves, which typical for this unit, appointed efficient quantity types of section, lined up the fasces chain with the transitional zones.
Keywords: electrofacies ànalysis, achimov formation, petrophysical properties, reservoir properties, clinoforms.
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05.06.09, Chu Van Luong, Nguyen Huu Nhan
FEATURES DISTRIBUTION AND CHANGE OF FORMATION PRESSURE IN GRANITOID COLLECTORS FOR "WHITE TIGER" FIELD
http://www.ogbus.ru/authors/Luong/Luong_1.pdf (in Russian)
Formation pressure is one of the major parameters of development oil and gas deposits. Available materials specify that we have met in granitoids the special type collector, which differs from collectors in terrigenous and carbonate rocks. Therefore at present question on features distribution and change of formation pressure in granitoid collectors is actual.
Keywords: granitoid collector, formation pressure, bubble-point pressure, fundament, north vault, centre vault, "White Tiger" field
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23.04.09, G.A. Suleymanov
GEOLOGICAL AND GEOCHEMICAL BASIS OF OIL-GAS PROSPECTS MESOZOIC DEPOSITS IN THE CENTRAL PART OF THE SOUTHEASTERN SUBSIDING GREATER CAUCASUS
http://www.ogbus.ru/authors/SuleymanovGA/SuleymanovGA_1.pdf (in Russian)
In the presented article, basis of study paleotectonical, paleogeographical and geochemical conditions of sedimentation and oil-gasbearing of Mesozoic deposits, to the main oil and gaz bearing deposits are middle Jurassic and Valanjinian stage. Historical and geological model of oil and gas generating shows that, the middle Jurassic and the bottom part of Valanjinan deposits from the beginning of late Aptian stage had subsided into zones of the main phase gas generation (MFG). The upper part of Lower Cretaceous deposits was in zone of the main phase of oil generation (MFO). Upper Cretaceous deposits, which are being in zone of protokatagenes (on the depths 1-2 êì), had no essential value of oil and gas generation. Proceeding from specified, Middle Jurassic and the bottom part of Valanjinan stage are considered prospective for searches of gas and gas-condensate pools, and the upper part of Lower Cretaceous section for oil pool.
Optimum conditions for formation and preservation of oil and gas pools in the specified deposits exists in under trust parts of the SW wings of anticline folds of Begimdag-Tegchay, Sitalchay, Yashma and Shurabad, where drilling explorative wells within depth 4,5-5 êì has been recommended.
Keywords: geology, geochemist, oilgasbearing, Mesozoic, anticline, section, search, well, zone, faze, Jurassic, Cretaceous, Greater Caucasus, subsiding.
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30.03.09, O.V. Sitchikhin
STRUCTURE AND OIL-AND-GAS CONTENT OF THE RIPHEAN ROCKS OF THE NORTH-EAST PART OF VOLGA-AND-URAL SEDIMENTARY BASIN (PERM KRAY)
http://www.ogbus.ru/authors/Sitchikhin/Sitchikhin_1.pdf (in Russian)
On the basis of new geological and geophysical data features of the Riphean rocks structure of the north-east part of Volga-and-Ural sedimentary basin (Perm Kray) are considered. The Riphean complex of sedimentary rocks belongs to two aulacogens: Kaltasinsky and Kazan-Kazhim; thickness of the Riphean rocks varies from a few tens meters up to 9 km in a southwest part of Kray. The perspectives of oil-and-gas content are revealed to Novo-Dubovogorskoe anticlinal structure in the south and zones of of the Riphean sedimentary rocks in the west of Perm Kray.
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24.12.08, A.F. Shakurova
RESEARCH ANALYSIS OF GEOLOGICAL AND PHYSICAL FACTORS, INFLUENCED ON MURIAFIC FREATMENTS EFFECTIVENESS IN MIDDLE-VOIGA-RIVER REGION CONDITIONALS
http://www.ogbus.ru/authors/Shakurova/Shakurova_2.pdf (in Russian)
Here it is shown analysis of muriafic treatments effectiveness for increasing water intake capasiti, operating Tournasian and Bashkir fiers. It is explored the influense of different fluid loss propeties. Capacitive and collector characteristic measures on pickup increasing after muriafic freatments. Here resume and recommendations are formulated for arrangement, directed for increasing the effectiveness of this technology in "Samaraneftegas" public corporation term.
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23.12.08, Mohammed Thaiban Al-Garni, Bandar Duraya Al-Anazi
INVESTIGATION OF WETTABILITY EFFECTS ON CAPILLARY PRESSURE, AND IRREDUCIBLE SATURATION FOR SAUDI CRUDE OILS, USING ROCK CENTRIFUGE
http://www.ogbus.ru/eng/authors/Al-Garni/Al-Garni_1.pdf
The main task of a petroleum reservoir engineer is to produce oil and gas reservoirs with maximum economic rate and reaching the ultimate recovery. Reservoir evaluation processes need a reservoir description as completely and accurately as possible using a variety of methods from seismic and well testing to logging, cuttings analysis and coring. These methods present the engineer with a valuable and wide range of scales of information to well evaluate the reservoir and control its performance and improve oil recovery. The main goal of core analysis is to reduce uncertainty in reservoir evaluation processes created by the uncertainty degree in the input parameters at the different levels from reserve estimate level to the enhancement of reservoir performance level. In order to reach these targets, the exact determination of certain petrophysical properties are necessary such as rock porosity, relative permeability, water saturation, and capillary pressure at all stages of reservoir life and rock wettability. Predicting reservoir wettability and its effect on fluid distribution and hydrocarbon recovery remains one of the major challenges in reservoir evaluation and engineering. Current laboratory based techniques require the use of rock-fluid systems that are representative of in situ reservoir wettability. Several parameters like relative permeability's, residual saturations, and capillary depressurization curves change with the wettability state of the reservoir. In addition all these parameters, can greatly impact oil recovery. Thus, there is a need to relate all these parameter to wettability state of the reservoir.
In this study, irreducible oil saturation and capillary pressures using rock centrifuge measurements for Berea Sandstone rock samples and Saudi oils will be tested during drainage and imbibitions cycles by varying each time the wettability of the tested samples by using different Saudi oils (Heavy, Medium, and Light). The capillary pressure for the aged samples will be measured again by the rock centrifuge. Hence, the changes in capillary pressure curve before and after wettability alteration will be obtained. Hence, wettability, capillary pressure, initial fluids saturation, will be correlated for Saudi reservoirs.
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29.10.08, A.Sh. Ramazanov, R.K. Akhmetov
THE EVALUATION OF POSSIBILITIES OF AUXILIARY WELLBORES TESTING USING TEMPERATURE CHANGES IN THE WELL
http://www.ogbus.ru/eng/authors/Ramazanov/Ramazanov_3e.pdf (in English)
http://www.ogbus.ru/authors/Ramazanov/Ramazanov_3.pdf (in Russian)
In this paper the question of utilizing borehole temperature measurements potentialities to determine inflow intervals of the auxiliary wellbores without getting into auxiliary wellbore is studied using mathematical calculation. Convection heat transfer in auxiliary wellbore and thermodynamic effects (barothermal and throttling or Joule - Thomson effect) in formation are taken into account.
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24.10.08, N.G. Nurgalieva, D.I.Khasanov
THERMOMAGNETIC MARKERS IN STUDIES OF THE RESERVOIR ROCKS
http://www.ogbus.ru/eng/authors/Nurgalieva/Nurgalieva_3.pdf
Thermomagnetic curves of reservoir rocks have been studied as markers of substance and reservoir rocks formation. In the temperature range of 400-530C it is observed an increase in the magnetization (maximum it is reached about 500C), then it goes the decrease in the magnetization of the newly formed magnetite, and it is sometimes visible the decrease in the magnetization of hematite (650-680C). The curves of the second heating differ more considerably, which depends on the content of Fe, sulfur, organic matter in samples. A series of the peaks are observed in the temperature range from 250 to 400C. These peaks are caused by magnetostatistical interaction of the generated pyrrhotine and magnetite. Since these minerals are formed into some aggregates, we observed temperature of Curie of pyrrhotine by the peak of the relative increase in the magnetization, caused by the transformation of magnetic and nonmagnetic sulfides into the magnetite (between 400C and 500C). This behavior is characteristic for the samples, which contain pyrite. Roughly, a quantity of pyrite can be evaluated on the decrease in the magnetization to ~400C. The presence of ferrous minerals, especially pyrite, not only decreases capacitive properties, but also it is the mineralogical factor, which influences the safety of the meta-stable phases of clay minerals.
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26.05.08, N.G. Nurgalieva, I.Y. Chernova, D.K. Nurgaliev
"LINGULOVYE" MUDSTONES: THE LITHOLOGICAL FEATURES OF THE REGIONAL MARKER
http://www.ogbus.ru/eng/authors/Nurgalieva/Nurgalieva_2e.pdf
http://www.ogbus.ru/authors/Nurgalieva/Nurgalieva_2.pdf (in Russian)
In present paper it have been considered the lithology of "Lingulovye" mudstones complex. This complex attributes to the Lower Kazanian formation and forms regional marker in Republic Tatarstan. "Lingulovye" mudstones accumulated within vast epicontinental sedimentary basin during Early Kazanian transgressive phase at the East of Russian plate. In this paper it was analyzed the petrographic composition of "Lingulovye" mudstones and it was also considered the map of thickness of this complex within Eastern part of Republic Tatarstan. This analysis allowed to determine a regional role of "Lingulovye" mudstones for palaeoenvironmental reconstructions and hydrocarbon reservoirs history. The analysis of the natural reservoirs of hydrocarbons in the lithologic aspect is one of the basic tasks during the explanation of their formation, the revealing of geological factors of distribution the hydrocarbon deposits, for example, the deposits of high-viscosity oils and bitumens in the Permian deposits of Republic Tatarstan. In this article the lithologic special features of the regional seal reper "Lingulovye" mudstones are examined.
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24.04.08, I.K. Ivanova
MONOALKYLBENZENES IN OILS OF THE VENDIAN-CAMBRIAN DEPOSITS
http://www.ogbus.ru/eng/authors/Ivanova/Ivanova_1e.pdf (in English)
http://www.ogbus.ru/authors/Ivanova/Ivanova_1.pdf (in Russian)
Peculiarities of the distribution of high-molecular normal alkylbenzenes in the Vendian-Cambrian oils of the Siberian platform are studied according to the data of chromato-mass-spectrometry. The predominance of high-molecular homologues with the odd number of carbon atoms in a molecule is established. The possible biochemical precursors and the probable mechanism of the formation of "odd" monoalkylbenzenes are suggested.
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18.04.08, E.A. Belitskaja, O.V. Serebrennikova
HYDROCARBON COMPOSITION OF CRUDE OILS FROM KOLTOGORSKY DEPRESSION AREA
http://www.ogbus.ru/authors/Belitskaja/Belitskaja_1.pdf (in Russian)
The oils from Koltogorsky depression area are subdivided into oils, generated due to planktonogenic organic matter (OM) accumulated mainly under reducing conditions (the first group) and oils, generated with OM which was considerably contributed by coastal flora and sedimentation conditions were sub-oxidative and oxidative (the second group). The third group included biodegraded oil, the hydrocarbon composition of which was similar to oils of the second group though had a number of distinctive features.
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16.04.08, V.V. Evseev, V.K. Nemerov, O.V. Serebrennikova
ÑHARACTERISTIC OF COMPOSITION OF ORGANIC MATTER AND DISTRIBUTION OF UNCOMMON METALS IN SIBERIAN PROTEROZOIC BLACK SHALES
http://www.ogbus.ru/authors/Evseev/Evseev_1.pdf (in Russian)
The composition of hydrocarbons and metals in Proterozoic black shales (East Siberia) was analysed. Is shown, that the extractable organic matter of ore body zone of Sukhoy Log gold-platinum deposit, as against remaining, is characterized by lower concentration of hopanes, phenantrenes, dimethyl- and trimethylnaphtalenes, increased content of alkylbenzenes, presence of naphthalene and absence of tricyclic terpane C30, hopanes C31, aromatic hydrocarbons with four and more aromatic cycles.
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26.03.08, E.E. Lukyanov, Yu.A. Trenin, A.A. Derevyagin
RELIABILITY OF GEOLOGICAL AND GEOPHYSICAL INFORMATION FOR OIL RESERVES EVALUATION
http://www.ogbus.ru/authors/Lukyanov/Lukyanov_1.pdf (in Russian)
Under the conditions of worsening in quality and accessibility of the oil mineral base, increase in the cost of a study of depths, most important is resolution of a question of the use of reliable geological-geophysical information for evaluating hydrocarbons reserves. Present article describes the criteria of the authenticity of geological-geophysical information in the new economic conditions, and it also proposes the concrete methods of an improvement in the quality of data for the optimization of the estimations of oil and gas reserves. For the first time is introduced concept "information metotechnology". The result of introducing the enumerated in the article methods will be the evolution of the prevailing relationship "time expenses - money expenses - level of a geological study" to the side of a two-fold increase of a geological study, two-fold decrease of the time expenses and 1.5-time decrease of money expenses.
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03.03.08, E.V. Gulaya, N.A. Krasnoyarova, O.V. Serebrennikova
REGULARITIES OF PERYLENE DISTRIBUTION IN JURASSIC DEPOSITS OF WEST SIBERIA
http://www.ogbus.ru/authors/Gulaya/Gulaya_1.pdf (in Russian)
On the about 450 mudstone and 65 coal samples study very high distribution of perylenes was found in mudstones of Upper Bajocian-Lower Bathonian and Callovian deposits located in the south-east of West Siberian Basin. The highest perylene concentrations were registered in shallow-sea deposits, smaller - in lake and lagoon, rather small - in marsh-ridden areas sediments. In the estuary sediment, as well as in the sediments of relatively deep (> 20 m) sea perylenes are absent. Perylenes are resistant to oxidative conditions in diagenesis. Maximum perylene concentrations were found in mudstone at Pr/Ph ranging from 2.8-5.8, in coals - from 7.0-10.5. At post-diagenetic stage of OM transformation perylenes are linked to kerogen preserving these compounds. Releasing from kerogen due to catagenetic factors perylenes are gradually destructed. Later on release of a new portion of perylenes occurs. Rarely, but very high perylene concentrations which increased with decrease in lipid content and increases in ash content and medium pH are found in recent valley peats.
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09.07.07, Khongorzul Batchuluun, L.V.Gorbunova, A.K. Golovko, V.F.Kamyanov, B. Purevsuren
HYDROCARBON COMPOSITION AND TYPIZATION OF MONGOLIAN CRUDE OILS BY MASS-SPECTRAL DATA
http://www.ogbus.ru/authors/Khongorzul/Khongorzul_1.pdf (in Russian)
Presented are the results of mass spectrometric determination of total group composition and molecular-mass distributions of hydrocarbons of 30 different structural types in Lower Cretaceous crude oils from East-Gobi and Tamsag oil-bearing provinces of Mongolia. The hydrocarbon types of crude oils were established in terms of three present classification modes. The reasons of differences in crude oil types according to these classification methods are revealed.
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28.05.07, L.A. Muraviev
MAGNETIC SURVEY IN CONTINUOUS MODE CAPABILITIES ON EXPLORATION OF OIL-BEARING AREA
http://www.ogbus.ru/authors/Muraviev/Muraviev_1.pdf (in Russian)
Application of modern highly sensitive POS magnetometers in magnetic surveys using satellite geodetic data in continuous mode on exploration of oil-bearing area is analyzed. Results of an interpretation based on adaptive method are reported.
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10.05.07, N.G. Nurgalieva, E.V. Utiyomov, V.E. Kosarev
THE PROSPECTING OF NON-STRUCTURAL HYDROCARBON TRAPS BY GAMMA-RAY LOGS FRACTAL DIMENSION CORRELATION
http://www.ogbus.ru/authors/Nurgalieva/Nurgalieva_1.pdf (in Russian)
The results of fractal dimension correlation of gamma-ray (GR) logging have been published in the present paper. The correlation was realized on line of more than hundred GR-logs within area of local sandstone hydrocarbon reservoirs attributed to the Ufimian stage, Republic Tatarstan. This correlation allowed to reveal the sharp boundaries between sedimentary palaeoenvironments interpreted in terms of sequence stratigraphy. The progradation direction have been established for the sedimentary series of the Ufimian on base of fractal dimension boundaries. These boundaries have been suggested as perspective criteria for the prospecting of low level system tracts (LLST) connected with the hydrocarbon reservoirs.
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24.01.07, R.V. Urshulyak
THE ANNOTATION FEATURES OF RESEARCH PACKED BUILT DEPOSITS IN RIFTS CARBONATE COLLECTORS
http://www.ogbus.ru/authors/Urshulyak/Urshulyak_1.pdf (in Russian)
Studying packed built carbonate the tanks of the Timano-Pechora province containing more of half of reconnoitered stocks of oil, has allowed to develop a technique of revealing and sidebar, high-permeability rifts-karstic zones. This technique is based on use of a complex of geological-geophysical, trade, remote and other researches.
Thus, in clause the complex approach to modelling packed built collectors with simultaneous interpretation of data of seismicity and trade geophysics on the basis of the constructed petrographic model is offered enables to receive the coordinated geological model considering age and structure of breeds-collectors and allowing to predict efficiency of new chinks.
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25.08.06, A.D. Bekman, V.N. Kutrunov
THE CORRECTION OF 3D LITHO-FACIAL MODELS ACCORDING TO ADDITIONAL INFORMATION OF DIFFERENT TYPES.
http://www.ogbus.ru/authors/Bekman/Bekman_1.pdf (in Russian)
The theoretical base for a new approach to 3D litho-facial modeling is proposed. The new approach allows to update existing 3D litho-facial models according to additional data of different types, for example, geological maps. It helps to geologists to obtain 3D models corresponding to prior 2D models. The given results of numerical experiments show the advantage of the proposed approach in comparison to kriging.
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31.05.06, M. Agliullin, V. Abdullin, M. Abdullin, S. Kurmayev
APPLICATION FEATURES OF THERMO BAROCHEMICAL EFFECT ON THE BOTTOM-HOLE ZONE
http://www.ogbus.ru/eng/authors/Agliullin/Agliullin_3e.pdf (in English)
http://www.ogbus.ru/authors/Agliullin/Agliullin_3.pdf (in Russian)
The paper describes features of complex thermobarochemical treatment (TBCT) method applied to bottom-hole zones (BHZ). The method is based on the use of solid rocket fuels, and the authors consider its application regarding for geological and technical safety of works and the geological effectiveness - the two factors contradicting each other to some extent.
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18.04.06, S.M. Kostarev, S.A. Chaykin, M.G. Morozov
ARRANGEMENT AND CARRYING OUT GEOEKOLOGY RESEARCH AT INVESTIGATION, DEVELOPMENT AND EXPLOITING OIL-FIELDS AT TERRITORIES UNDER SPECIAL NATURE MANAGEMENT (by the example of the Western Ural oil and gas bearing areas)
http://www.ogbus.ru/eng/authors/Kostarev/Kostarev_1e.pdf (in English)
http://www.ogbus.ru/authors/Kostarev/Kostarev_1.pdf (in Russian)
In this work we have classified the specially managed nature territories (SMNT). We have shown that oil-field objects within SMNT should be arranged with taking special nature saving measures during oil production. We have reviewed examples of geoecological predication for planning and exploiting oil-fields at territories where economic activities, within oil and gas bearing areas of the Perm Oblast in the Western Ural.
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02.11.05, V.A. Zykov
TO TERMINOLOGY OF TECHNOECOGEOPHYSICS AND APPLIED GEOPHYSICS
http://www.ogbus.ru/authors/Zykov/Zykov_1.pdf (in Russian)
Within the framework of a system - methodological substantiation of a new scientific and technical direction of applied geophysics - technoecogeophysics, its conceptual - terminological basis and its parities with one-serial terms and concepts from adjacent areas - geotechnologies, technogeology, etc., and also with lexicon of the most applied (prospecting) geophysics is in detail considered.
Terms of geophysical influence (stimulation) - magnetic, electric, acoustic, etc., being by analogues of corresponding methods (investigations) in prospecting geophysics, concept of active geophysical monitoring of geological objects, etc. are proved. It is shown, that applied geophysics as the term of more general order, will consist of two equal in rights parts described by one rank terms of prospecting (explorative) geophysics and technoecogeophysics.
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23.06.05, Yu.M. Polishchuk, I.G. Yashchenko
HIGH-VISCOSITY OILS: AN ANALYSIS OF REGIONAL AND TIME CHANGES
http://www.ogbus.ru/authors/PolishukYu/PolishukYu_1.pdf (in Russian)
Paper is devoted to analysis of reviewed materials on studies of physic-chemical properties of viscous oils, which are considered as main reserve of oil production for future years. Completed spatial analysis of regional regularities has shown that the most viscous oils in Russia are in Timano-Pechora and Precaspian oil-bearing basins. Analyses of regularities of oil viscosity change depend on depth show oil viscosity decreases with depth growth. It is shown that maximum value of oils viscosity is in Mesozoic rocks and its minimum value is in Precambrian rocks. In average, high viscous oils is heavy, sulfur, high resin, high asphaltenes ones and with small content of paraffin's and content of IBP 200C.
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16.06.05, S. Bychkov
A NEW TECHNOLOGY OF GRAVITY ANOMALIES INTERPRETATION ON EXPLORATION FOR OIL AND GAS
http://www.ogbus.ru/authors/Bychkov/Bychkov_1.pdf (in Russian)
Suggested a new technology of gravity anomalies interpretation on exploration for oil and gas that makes it possible to divide the total field into components caused by different units of geological section. The technology is based on essentially new method of potential fields data interpretation - system of vector field scanning. Transformation of vectors of the total horizontal gradient, their scanning in sliding window followed by integration of different components enable to separate in detail the sources of field anomalies in lateral and depth directions.
Joint use of vector scanning system, gravity modeling and correlation analysis makes it possible to create a geological model adequate to a priori geological data and observed gravity field. Effectiveness of the technology is shown on an example of gravity data interpretation in difficult geologic conditions.
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09.06.05, Sh. Gafarov, G. Shamaev
RESEARCH INTO OF THE LAWS OF NONNEWTON OIL FILTRATION IN THE CARBONATE POROUS ROCKS
http://www.ogbus.ru/authors/Gafarov/Gafarov_3.pdf (in Russian)
In has shown that in the carbonate porous rocks abnormal oil properties are seen more clearly.
The decrease of rocks porosity leads to the fact than reological parameters of nonnewton fluids are shown more substantial in comparison with terrier rocks. It's connected with a special structure of carbonate rocks.
The prospective methods of oil forced destruction structure at filtration in carbonate rocks will be thermal and physic-chemical.
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19.04.05, R.V. Khipeli, N.V. Belyaeva
THE DISCOVERY PERSPECTIVES FOR HYDROCARBON POOLS IN THE DOMANIK-TOURNASIAN OIL AND GAS BEARING COMPLEX IN THE SOUTH OF THE KHOREYVER DEPRESSION (TIMAN-PECHORA OIL AND GAS BEARING BASIN)
http://www.ogbus.ru/authors/Khipeli/Khipeli_1.pdf (in Russian)
On the basis of the detailed lithologic and sedimentologic research the considerable deviations from the common formation model of the Late Devonian in the south of the Khoreyver depression are discovered. The shift of the Famenian organogenous buildups comparatively to the Frasnian bioherm massives into the inner part of circular reef systems is determined. It allowed to determine a probable propagation zone of organogenous bodies - perspective hydrocarbon traps in the Yuzhno-Baganskaya (South Bagan) area. The given objects can form the basis for the first-priority oil and gas exploration tasks.
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11.12.2001, Miha'ly Dobro'ka
ROCK STRESS DETERMINATION IN BOREHOLES WITHOUT OVERCORING
http://www.ogbus.com/eng/authors/Dobroka/rockstress.pdf
The paper deals with the simultaneous determination of five independent stress components from the data measured in a single borehole. The proposed technique consists of cementing a solid cylindrical epoxy probe in which strain gauges have been embedded into a hole predrilled into the rock mass. Using the rheological equations of the Poynting-Thomson body analytical solutions are given for the displacement and strain field of the probe and of the rock. By measuring the time history of the deformations of the probe one can determine stress components occurring in the rock continuum without overcoring of the borehole.
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11.12.2001, M. Rykus, V. Snachev
GOLD IN DISLOCATED CARBONACEOUS LAYERS OF THE SOUTH URALS
http://www.ogbus.com/eng/authors/Rykus/goldin.pdf
Typomorphic peculiarities are shown of upper Precambrian gold- bearing carbonaceous layers of the South Urals. A gold- concentrating role is established of sulfide-carbonaceous depositions and hydrothermal-metamorphic nature of metallization. A qualitative model of gold-formation is represented, proposing a multi-time extraction of gold from host rocks in the process of lithe- and tectogenesis.
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11.12.2001, Lakatos, J. Lakatos-Szabo', S. Tro''mbo''czky, I. Munka'csi, B. Kosztin, G. Pala'sthy
POTENTIALS OF SILICATES IN TREATMENT OF OIL PRODUCING WELLS
http://www.ogbus.com/eng/authors/Lakatos/potentialsofsil.pdf
By joint application of silicates and polymers, a multifunctional, self- controlling chemical system is formed which works spontaneously even under harsh reservoir conditions, meanwhile the methods remain inexpensive, flexible and adaptable to any production technologies. A concise summary of the technique, its principle and mainly field projects are discussed in the paper.
It was shown that the silicates, combined with polymers offer unique opportunity to cure numerous production/injection problems including water-shut- off, profile correction, gas coning, etc. in oil and gas fields. Between 1980 and 1998 the field projects, comprising more than forty well treatments, yielded substantial additional oil production, life time of wells were extended and the overall profitability of the field was significantly increased, meanwhile environmentally friendly chemicals were used. Therefore, the Hungarian experts are convinced that the polymer/silicate method is reasonable alternative wherever and whenever the application of bulk or surface gelation or deposition is arising.
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11.12.2001, J. Lakatos-Szabo', I. Lakatos
EFFECT OF NON-IONIC SURFACTANT HOMOLOGUES ON INTERFACIAL RHEOLOGICAL PROPERTIES OF OIL/WATER SYSTEMS
http://www.ogbus.com/eng/authors/Lakatos/effectofnon.pdf
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11.12.2001, G. Petho'', L. Ficso'r
SOME APPLICATIONS OF FREQUENCY DOMAIN 2.5-D EM NUMERICAL MODELLING USING HED SOURCES
http://www.ogbus.com/eng/authors/Petho/someapplic.pdf
Geophysical electromagnetic (EM) methods can be characterized with increasing role in applied geophysical research. Without modelling of EM fields a great deal of theoretical problems can not be solved and practical questions of measurements planning can not be answered. Assuming harmonic time dependent horizontal electric dipole (HED) sources parallel to the structural strike and perpendicular to it this paper deals with some applications and summarizes the results gained by 2.5-D frequency domain EM numerical modelling in the last years.
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11.12.2001, F. Egerer, K. Namesa'nszki, F. Ma'dai
IONIC ADSORPTION OF SAND - AND CLAYSTONES
http://www.ogbus.com/eng/authors/Madai/ionicad.pdf
It is well-known that the contamination of soils or rocks, developing as a result of industrial, agricultural or some other activity, is a significant environmental problem. The task in these cases is to determine the kind and the amount of the contaminating element as well as to indicate its areal distribution. To complete these tasks, it is necessary know how the different soils and rocks do adsorb different ions, with a special regard to the toxic elements. We mention here only a few examples from the large amount of papers on this topic. Our own experimental results as well as the requirements for environmental mapping have proven the necessity and importance of these experiments. The importance of ionic adsorption is demonstrated by the fact that research on this topic have a high priority in the US. Experimental results on ionic adsorption of certain rocks are presented in this paper. Several actions were investigated in different anionic environments. It has to be mentioned that precipitation of minerals in a small amount takes also place parallel with the adsorption. However, since it was not possible to distinguish these processes, we consider later the phenomena as adsorption, whether precipitation occurs or not.
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11.12.2001, B.M.Orlinskiy, K.M.Bruzgalov, M.Y.Mavrin
STUDY OF POOL FLOODING PROCESS FOR MONITORING THE OIL RESERVES RECOVERY
http://www.ogbus.com/eng/authors/Orlinsky/studyofpoll.pdf
The urgency of study of basic regularities of pool water flooding is predetermined by the fact that complex structural multiple zone oil pools are developed by wells being drilled according to a rather simple geometric pattern. So, two mutually functioning systems – the deposits of a given structure and the selected system of development – in most cases do not correspond to each other to a certain extent that negatively influence on basic technological factors of the development. The value of information about the process and condition of pool water flooding is in its results of a complex influence of geologic structure features and of applied development system on recovery of reserves in multiple zone pools.
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11.12.2001, J. Toth, T. Bodi, P. Szucs
CALCULATION OF RELATIVE PERMEABILITY FROM DISPLACEMENT TEST DATA
http://www.ogbus.com/eng/authors/Bodi/calcofrel.pdf
In the porous reservoir-rocks for the description and simulation of the two-phase flows the phase/relative permeability data and functions of fluids are necessary. The function of relative permeability is given generally depending on the degree of saturation of the wetting phase, and this function is determined in the most cases on the basis of data taken from laboratory displacement tests performed on rock-samples. Displacement tests can be carried out through a relatively short time, but the evaluation of the data received can be considered as a highly complex job. During displacement measurement the processing of data is made difficult by the unfavorable capillary end-effect appearing on the inlet and outlet of the sample unless the displacement has been made by a great speed, because then the value of the end effect shall have been minimized.
Numerous methods are known to evaluate the data of displacement on an appropriately big speed, these often apply an auxiliary graphic method, and in other cases some empirical auxiliary functions will be applied. The analytic method elaborated and developed by the Authors offers a possibility to describe the permeability functions more accurately almost semi-analytically, and to calculate these from the data of displacement.
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11.12.2001, J. Toth, T. Bodi, P. Szucs, F. Civan
LINEAR EQUATIONS DERIVED FROM LABORATORY EXPERIMENTS TO DESCRIBE IMMISCIBLE DISPLACEMENT
http://www.ogbus.com/eng/authors/Bodi/lineareq.pdf
An accurate analytical interpretation method to determine the Leverett-function (fw) and its derivative (fw') from immiscible displacement data in core plugs is presented. Linear equations are developed to describe the displacement processes occurring before and after breakthrough. A quadratic function is introduced to represent the saturation distribution along the cores.
The relationships derived in this study can be used for analysis of core tests involving constant injection rates and constant pressure differences. The applicability, practicality, and accuracy of the new analytical method are verified by means of the experimental data obtained in the present study and by those reported in the literature.
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