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Geomodel 2019
- Conference date: September 9-13, 2019
- Location: Gelendzhik, Russia
- Published: 09 September 2019
1 - 20 of 140 results
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Stratigraphy, Facies and Oil and Gas Potential Prospects of the Upper Cambrian of the Igarka-Norilsk Structure-Facies Zone
By D.A. KomlevSummaryAs a result of detailed stratigraphic and lithofacies analysis of two standard sections of the Cambrian of the Igaro-Norilsk structure-facies zone, it was established that in the study area the Upper Cambrian deposits accumulated in 4 facial zones: 1) deeply submerged shelf and basin margin; 2) slope of the carbonate platform; 3) front of the carbonate platform; 4) shelf lagoon, intertidal and supratidal zones. The greatest development of reservoirs is predicted in the Kulyumbe, Uyigur and Tukalanda formations, which are represented by carbonate platform edge facies, polycyclic shallow lagoon and tidal flat sediments. The oil and gas potential prospects scheme have been composed on the basis of paleogeographic reconstructions taking into account structural and geochemical criteria.
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The Forecast of Complexly Built Traps in the Kharasavey-Bovanenkovo Region of Western Siberia Based on the Results of Basin Modeling
Authors V.L. Shuster and L.I. ZinatullinaSummaryToday there is an urgent need to replenish the resource base by increasing hydrocarbon reserves. In recent years, more and more actively in all oil and gas producing countries of the world, the technology of oil and gas bearing systems modeling is used to solve problems associated with the forecast of oil and gas potential and the choice of priority areas of exploration for oil and gas. The technology allows you to create a regional geological model of any territory in size based on the complex of geological, geophysical and geochemical materials available at this stage, to evaluate oil and gas potential, bringing together the results of structural and litofacial analysis, petrophysical and geochemical studies, reproducing the fluid-dynamic development of the studied region at all stages of geological stories. The paper presents the main results of basin modeling and provides brief conclusions. Also, some information is presented in the work on the new technology of seismic prospecting of MOV OGT 3D using scattered waves, which makes it possible to forecast the development zones of decomposed reservoir rocks in dense rocks.
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Artefacts of Diffraction Imaging and their Attenuation
By M. DenisovSummaryA formulation of the problem of the small scattering objects’ true-amplitude imaging is proposed. The model of the acquired wavefield and the algorithms for its inversion are studied. Evanescent wave processing tools to improve the imaging resolution are considered. The limitations of the Kirchhoff integral-based depth imaging are demonstrated.
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Solving Problems Methods of Displacement Receiving Equipment in Transit Zones
Authors A. Levitskiy, A. Rudakov and M. LevitskayaSummaryThis article describes the main problem of a seismic crew operations in transit zones with ocean bottom cable (OBC) equipment. Required accuracy ensuring of receiving equipment layout. Online methods of vessel track course corrections at the time of pickup equipment is describes. This technique has significantly reduced the time of seismic work production. During of the seismic works, acoustic positioning is not carried out for all receiving points often. This primarily due is equipment high cost. Increasing accuracy of positioning sensors without acoustic positioning is carried out using the methods of interpolation receiver points coordinates, taking into account track of the vessel. Comparison of standard procedure of linear interpolation, as well as rationale use procedures for adjusting the receiver point position on the first break picking entry during the work in the OBC 3D modification.
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South-East Pre-Caspian Post-Salt Succession. Application of 2D Full-Stack Seismic Inversion Technology for Predicting Reservoir Properties
Authors B. Oraz, G. Zholtayev, G. Akhmetzhanova, R. Abuyev and A. AkhmetzhanovSummaryThe results of 2D full-stack seismic inversion technology for predicting reservoir properties applied to the area under the study area within Triassic succession of the south-east Pre-Caspian sedimentary basin. Hydrocarbons, mostly oil trapped by salt dome wall and faults. Full-stack seismic lines, wireline logging data and seismic velocity were integrated to generate P-impedance volume. The porosity was estimated from the relationship between the absolute P-Impedance result and the porosity effective at the well locations. Generally, low P-Impedance or high porosity packages over the area indicate higher probability of hydrocarbon sands in the Reservoir interval. The localized high P-Impedance at the Reservoir interval at the northern part of area could reveal the distribution of the micro-conglomerate reservoir, however more geological-geophysical should be integrated to interpret anomalous geobodies. Data obtained allows concluding that it is not possible to discriminate the distribution of the hydrocarbon sands due to strong overlap of the acoustic impedance of the hydrocarbon bearing sands and the background lithology.
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Geological Features of Triassic Sediments of the Eastern Edge of the Pre-Caspian Sedimentary Basin
Authors G. Zholtayev, G. Akhmetzhanova, R. Abuyev, A. Akhmetzhanov and B. OrazSummaryGeological settings, stratification and oil and gas potential of Triassic sediments within the Eastern margin of the Pre-Caspian sedimentary basin are considered. Noted absence of middle and upper Triassic sediments on most of the drilled prospects. Observed main features of formation stratification by geophysics and paleontological data.
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The Geochemical Characteristics of the Organic Matter of Lower-Vendian Glacial Deposits of Pre-Ural Region Are Presented in this Paper
More LessSummaryFor the first time the lithological and geochemical characteristics of OM of the Lower-Vendian glacial deposits of Pre-Ural region are presented in this paper.
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Primary Migration in Upper Jurassic Bituminous Shales and in Cretaceous Deposits Arctic Sector of Western Siberia
Authors A.V. Bochkaкev, A.V. Lobusev, M.A. Lobusev and U.A. AntipovaSummaryThe mechanisms for the formation of fissure capacity and industrial accumulations of hydrocarbons in isolated systems directly in carbonate-clay-siliceous rocks (bituminous shale), as well as the fluids breakthrough into the overlying deposits and their subsequent migration of different length through the permeable formations got additional confirmations from the interpretation of seismic data and deep drilling in anomalous zones of articulation of the Bazhenov formation (and its age analogues) with adjacent sediments of the Achimov formation.
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Features of the West Siberian Megabasin Central Part Jurassic-Cretaceous Deposits Hydrogeochemical Conditions
Authors A.R. Kurchikov, A.G. Plavnik and M.V. ItskovitchSummaryThe method and results of modelling the hydrogeochemical spatial patterns in the Cretaceous and Jurassic sediments of the Koltogor and Tolkin troughs and surrounding areas of the West Siberian megabasin are presented. The model of hydrogeochemical conditions is constructed as series maps of the groundwater salinity in Formations, as well as NS and EW oriented cross-sections. Results indicate a significant variability of groundwater salinity both as a whole in the Jurassic-Cretaceous sediments, and within individual aquifer. The revealed substantial heterogeneity of hydrogeochemical conditions in the Jurassic-Cretaceous sediments indicates the complex genesis of the groundwater chemical composition.
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Accounting for Anisotropy in the Variation-Grid Geomapping Method
By A.G. PlavnikSummaryThe problem of mapping for geological objects features with locally varying anisotropy is considered. Approach based on simulation of deformation of initially isotropic space is formulated. There are given examples of the problem solutions using variational method of geological mapping. The problem is reduced to modification of model conditions represented by partial differential equations using the Jacobi transformation matrix for the simulated deformation. The approach is applicable to the solution of two-dimensional and three-dimensional problems of mapping geological objects features with both homogeneous and inhomogeneous spatial anisotropy.
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Application of the Latest Russian Technologies in Geomechanical Modeling of the Upper Part of the Section to Improve the Efficiency of Exploration Drilling
Authors E.V. Kireev, I.R. Khalilov, L.A. Andreev and M.A. SibilevSummaryThe existing geological and geophysical tools do not allow to forecast Petro elastic properties of rocks of the upper part of the section. Modern methods of GIS and seismic exploration do not allow to characterize the upper part of the section due to the limited diameter and depth. Therefore, to solve this problem in the marine environment, a technique was developed to predict the elastic properties of rocks according to engineering-geological surveys (hereinafter IGI).
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Classical Phisycal Laws Generalization Relatively Electro/Gravitationally Investigations in Geophysics
More LessSummaryThe report presents the prolongation of the previous «Geomodel-2008/2009/2016/2017/2018» materials.
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Multi-Scaled Fractured Medium Modelling by ACS Algorithms
Authors V.V. Masjukov and O.S. YurchenkoSummaryRecently we presented a new algorithm of natural fractal structure evolution (NFSE). Application of the algorithm in question with interpolation for sequential iterative reduction of the grid step gives opportunity for multi-scaled super-resolution imaging of fractured geological medium. The main goal of this approach is to fill (reduce) the objective information vacuum between seismic and wells scales. In the present study we develop new ACS (Ant colony simulation) methods for this purpose. A number of tests show that the new technology results are generally adequate to natural observations.
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Numerical Simulation of Seismic Wave Propagation in Fluid-Saturated Geological Media by the Grid-Characteristic Method
Authors V.I. Golubev, A.V. Shevchenko and I.B. PetrovSummaryNowadays the seismic survey technology is widely used for the oil and gas fields exploration. In connection with the recent discovery of unconventional deposits, the task of improving its methods and approaches is important. Mathematical modeling may allow us to calculate seismic responses from the geological medium with a given structure in the reasonable time. Due to the increase of the computational power of HPC systems, more and more complex mathematical models can be used: acoustic, elastic, averaged fractured, etc. In this paper the process of the seismic wave propagation in fluid-saturated geological media is investigated. The Dorovsky model is used, which takes into account the porosity and other properties of the elastic skeleton and the saturating fluid. The authors expanded the scope of the numerical grid-characteristic method, previously well-proven in problems of seismic wave propagation in acoustic, elastic and fractured media. A two-dimensional formulation of the seismic exploration problem is considered. Formulas for the interior points of the integration domain were obtained, as well as the boundary condition on the “day surface”, in explicit form. Calculations illustrating the differences in the wave fields when using acoustic, elastic and fluid-saturated models for describing geological media were carried out.
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Regularities of Distribution of Oil and Gas Deposits by Size of Reserves in Sedimentary Thickness
Authors E.A. Sidorchuk and S.A. DobryninaSummaryThe work is devoted to the estimation of prospects of oil and gas potential and to increasing of efficiency of geological prospecting works in the oldest oil and gas region of the pre-Caucasus. Actual material of approximately 300 deposits was used. The productivity level of deposits includes several stratigraphic complexes. The areas of distribution of oil and gas fields in stratigraphic complexes were mapped. The predominant direction of distribution of oil and gas potential on stratigraphic complexes in each of these areas is given. The distribution of hydrocarbon deposits by depth, stratigraphic complexes and reserves is shown. The regularity of hydrocarbon deposits in more ancient complexes to a greater depth is traced. Along the trend there is a decrease in the level of oil and gas positional. Along the line of trend there is a tendency of decreasing of deposits size in case of predominance of liquid hydrocarbons. The value of reserves along the trend tends to increase in the case of gas predominance. The deposits which by of the size reserves fall on numerical values from the described tendencies are marked. This can be explained by the existence of non-pre-searched or not discovered deposits in the prospective stratigraphic complexes.
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SMARTCore an Effective Core Data Processing Instrument
Authors E.V. Stremichev and D.I. ChuprinkoSummaryRapidly gaining popularity, the modern trend of digitalization and automation of work with large data arrays is being introduced in oil companies and research institutes. The huge volume and diverse format of laboratory data on cores complicate the work of specialists in various fields. According to the research, 47% of the working time is spent on technical tasks of the same type when working with core. The developed prototype of the SMARTCore program is aimed at creating a unified relational database for all types of core studies, reducing routine operations at work, automatically creating petrophysical models with automated selection of all empirical coefficients using the differential evolution method. It is thanks to the creation of a unified and related database for all laboratory studies on cores that we can experiment with different combinations of data at lower time costs, which, in our opinion, will allow us to achieve greater accuracy of models given the greater number of factors.
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Stratigraphy to Seismic (StS™): a Case Study from the Viking Graben, Norwegian Shelf
By I. GoginSummaryStratigraphy to Seismic (StS™) is a dynamic approach to integration and interpretation of seismic and stratigraphic data. It provides detailed chronostratigraphic, hiatal, palaeoenvironmental and sediment supply data for seismic interpretation. The detailed biostratigraphic analysis forms the basis of the method. The described method was applied to a multi-well study of the Viking Graben on the Norwegian Shelf. The example shows the application of the method on two wells from the study. The curves are plotted against the seismic profile and the interval for detailed biostratigraphic research is identified. With further study of the chronostratigraphic framework, the well correlation is resolved. The method allows rapid correlation and interpretation of the data.
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Features of Productivity of Fractured Reservoirs on the Example of the Bazheno-Abalak Complex of the Krasnoleninsky Anticline
Authors S. Kuzmina, E. Avramenko, M. Grischenko and M. SmyshlyaevaSummaryThe work is part of a comprehensive study of the Bazheno-Abalak complex, carried out in order to create a methodology for forecasting productive zones. The report covers aspects of the tectonic development and structure of the object, the specifics of the sedimentation of the Bazheno-Abalaki complex, features of the formation and distribution of fracture in the section and in area. The results of a comprehensive study of different-scale methods (geophysical, core) and analysis of the fracture of the object and its relationship with productivity are presented The work is part of a comprehensive study of the Bazheno-Abalak complex, carried out in order to create a methodology for forecasting productive zones. The report covers aspects of the tectonic development and structure of the object, the specifics of the sedimentation of the Bazheno-Abalaki complex, features of the formation and distribution of fracture in the section and in area. The results of a comprehensive study of different-scale methods (geophysical, core) and analysis of the fracture of the object and its relationship with productivity are presented.
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Research of the Characteristics of the System of Natural Fracturing and Cavernosity to Optimize the Development of Carbonate Reservoirs
Authors P.A. Likhachev, A.A. Kozyaev and E.I. SmolentcevSummaryReport on the impact and priority of fracture characteristics on the development of a carbonate reservoir. The relationship of these characteristics with the critical values of depression in the operation of wells. Recommendations are given on the wiring of the horizontal section of wells. The research is based on the analysis of a large amount of field information for 2015-2018 of one of the deposits of Eastern Siberia, in the area of the Yurubcheno-Tokhomskoy oil and gas accumulation zone.
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Experimental Study of the Effect of Ultrasonic Treatment on the Rheological Properties of Oil and Paraffin-Containing Oil
Authors E.A. Marfin, A.I. Kadyirov, Y.V. Karaeva and M.M. GabdukaevSummaryThis paper is devoted to studying the effect of ultrasound on the rheological properties of natural and synthetic oil. Experimental data were obtained using a rheometer Physica MCR 102 and a vibration viscometer SV-10. It has been established that with prolonged ultrasound exposure, the viscosity of the oil increases. It is shown that ultrasound leads to a change in the activation energy of a viscous flow of paraffin-containing oil. Moreover, not only the percentage of paraffin and the duration of treatment, but also the temperature depend on the processing efficiency. The obtained results can be used to improve the regime parameters of the impact on oil during its production, transportation and storage.
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