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Geomodel 2019
- Conference date: September 9-13, 2019
- Location: Gelendzhik, Russia
- Published: 09 September 2019
41 - 60 of 140 results
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Comparison of Efficiency of Different Methods of Seismic Inversion in the Context of Carbonate Deposits and Lack of Data
Authors S.V. Egorov and E.V. ZubovaSummaryThe paper is dedicated to the possibility of carbonate reservoir properties prediction with the use of results of seismic inversion. Authors propose improved method of seismic inversion which implicates use of results of genetic inversion as trend for rising of low-frequency model accuracy. Also the method supposes signal changing over time. As the result final acoustic impedance cube gets higher quality. Resulted cube was used as trend for reservoir properties modeling goals and final prediction was better than prediction obtained without trend. Method was prepared in the context of one oil field and was in further tested on another field and final results were satisfying too.
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Modern Gravity Survey in the Study of the Geological Structure of Oil and Gas Promising Objects
By S.G. BychkovSummaryThe hardware, software and methodical possibilities of modern gravimetric prospecting and their application are considered for receipt of informative and geologically meaningful models of oil and gas promising territories and objects. Presents the results of gravimetric studies on the territories with different geological structure, based on the modern theoretical and software basis of the gravity field anomalies interpretation.
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Local-Scale Prediction of Zones of the Collector Under Conditions of Saturation of the Cross-Section with Intrusive Body near Location Parametric Borehole Tynepskaya-215 using of the Complex of Geophysical Methods
Authors I.I. Ivanova, A.A. Belaya, E.N. Makhnach and G.M. TrigubovichSummaryResearches were conducted within the Bakhtinsky megaway of the South Tungus NGO. The aim was to identify areas of presence of reservoirs that are promising for the detection of hydrocarbons. The task is complicated by the presence of trap magmatism. The object of the Researches was a limited amount of geological environment in the area of the near location parametric borehole Tynepskaya-215. The forecast was carried out on the basis of a complex of geological and geophysical researches.
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Reconstruction of the 3D Model of the Geological Structure of the Near-Borehole Space in the Area of the Parametric Borehole Vilyuykanskaya 1 by the Complex of Geophysical Methods
Authors A.A. Belaya, E.N. Makhnach, I.I. Ivanova and G.M. TrigubovichSummaryThe report includes a modern approach to the joint 3D-interpretation of the MT and TEM electrical prospecting data with the aim of the research the geological structure of the Lower – Middle Cambrian reef formations near the location of the parametric borehole Viliuykanskaya 1 (eastern side of the Kureiskaya syneclise on the Siberian platform). Also, a set of methods included monitoring studies using seismic emission methods, complex aerogeophysical research, and reinterpretation of seismic data. As a result, the prediction of the development of organogenic structures was made, their internal structure was explored and the quality of the shielding properties overlapping the structures of the clay-carbonate sediments of the Verkholenskaya suite was evaluated. Most of the seismic emission anomalies are confined to the boundaries of the proposed structures, where there is probably an increased migration of fluids and gases.
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Oil and Gas Potential of the Northeast Part of the Siberian Platform
Authors D.S. Lezhnin, P.N. Sobolev and S.V. KotovaSummaryIn the present work, on the basis of complex seismic data, GIS and results of core laboratory research, four major promising oil and gas bearing complexes were identified: Upper Riphean, Upper Vendian-Lower Cambrian, Upper Cambrian and Permian-Lower Triassic. For each complex: the permeable part, seal, source rock, as well as the most perspective zones of oil and gas accumulation and the main morphogenetic types of traps were determined.
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Clarification of the Deep Geological Structure and Hydrocarbon Potential of the Yenisei-Khatanga Regional Trough on the Complex Electrical Methods TEM and MTS
Authors E.N. Makhnach, A.A. Belaya and A.V. MamaevaSummaryThe report considers the results of complex geophysical researches by TEM and MTS, conducted out in 2016-2018 within the Yenisei-Khatanga trough. This method of research allowed to study in detail the structure of the upper part of the section by TEM, and with the help of data obtained by MTS to clarify the deep geological structure. The possibilities of electrical prospecting in solving the following tasks are formulated: research in conjunction with seismic exploration and drilling of the Jurassic-Cretaceous part of the section; research of the structure of the Paleozoic complex; research of zones of articulation of large geoblocks, deep structure of the earth’s crust and upper mantle; research of cryolithozone.
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Prediction of Lithological Traps in the Bottom of the Subcycle AC12 (Border Akhskaya and Cherkashinskaya Formations) Based on Seismic Data on the Example Priobskoye Feld
More LessSummaryDelineation of lithologic traps methodology in the bottom of the subcycle AC12 has been considered on the example Priobskoye field. The job has been done based on 3D seismic and geological model. There has been used log interpretation while complexing. The analysis of the reflector Hah (the top of Akhskaya formation) has been done. As a result, the area has been divided into 4 parts by quality of reflector. In the zone of articulation of two such sites, the erosions zone has been detected. This zone is controlled by a deep fault. The discovered erosions form lithological traps, which are isolated from the deposits of overlying objects.
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Acoustic Emission Events Reconstruction Method from the Physical Experiment Records
Authors G.V. Reshetova, A.V. Anchugov and N.V. YurkevichSummaryThe paper presents the results of laboratory experiments and numerical modeling for solving the problem of acoustic emission event recovery. The equations of the dynamic theory of elasticity in the polar coordinate system were used as a mathematical model. The simulation results made it possible to evaluate a number of basic characteristics for the configuration of a multichannel data acquisition system, the frequency of the AE signals, to determine the required number of recording channels and the position of the sensors in the core., The 3D modeling is planned in the near future in order to develop a mathematical method for reconstructing the AE events from the records of a real physical experiment.
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The Ability to Assess Data Processing 3D Seismic Acquisition using VSP
Authors V.A. Lensky, A.S. Zhuzhel and F.S. SalichovaSummaryIn recent years, attention has been focused on the use of vertical seismic profiling (VSP) in the processing and interpretation of 2D/3D surface seismic data. One of the tasks is to assess the quality of data processing. Traditionally, the evaluation of the quality of processing, binding, reflection, and phase shift in seismic acquisition 2D/3D are performed by comparison with synthetic traces calculated with the momentum extracted from the CDP data. Such estimation may not correspond to reality, especially when using synthetic data of acoustic and density logging. The solution to these problems with the use of VSP provides a more accurate result.
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Reservoir Parameters Prediction Using Seismic Waveforms Based on Neural Network
Authors I.I. Priezzhev, A.A. Polyakov, I.A. Murzov, S.S. Gavrilov and E.E. SapogovaSummaryQuantitative prediction of effective reservoir parameters by a set of seismic attributes is an important step in the interpretation of seismic data, and the construction of maps of effective thicknesses is one of the main results of such work and serves as the basis for the laying of new wells in the operation of oil and gas fields. Typically, these constructions are performed based on linear regressions obtained in the process of attribute analysis based on the data of effective thicknesses of previously drilled wells and the selected set of seismic attribute maps. It is known that such an analysis is a rather complex operation and it is easy to obtain an unreliable forecast in complex geological conditions using the wrong set of attributes. Another very common technique is the use of the seismic waveform for seismic facies analysis. Such analysis is usually performed based on unsupervised classification algorithms. It is proposed to use seismic waveform for quantitative forecasting based on neural networks.
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Neocomian Sequence Zonation in the Rakushechnaya High (North Caspian Offshore)
Authors M.M. Kavun, S.A. Potryasov, V.R. Kuzakov, A.G. Alexeev, A.S. Shtun and S.Y. ShtunSummaryThree large offshore fields (Filanovskogo, Korchagina, Rakushechnaya) are covered by 3D seismic survey and 18 exploration wells give us important information concerning to sedimentary circumstances in the Neocomian. Sedimentation in two main zones was different and changed in time sequence, besides some transition zone cover the extensive area in the central part of studied high. Main factor was eustatic oscillations of the sea level.
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Multiphysics Models of Oil Reservoirs: Organization of Database ATLAS MPhM
Authors G.V. Nesterova, I.N. Yeltsov, A.Y. Sobolev and I.V. SurodinaSummarySystematic set of the multiphysical models of typical oil reservoirs organized to the database ATLAS MPhM. It is constantly updated with new models based on the received practical data. Geomechanical, hydrodynamic, geoelectric processes in the borehole environment and well logs are jointly analyzed. Each multiphysical model includes parametric description of the reservoir and drilling mode, calculated water saturation and mineralization, electrical resistivity and relevant electric and electromagnetic logs. The choice of a model from the ATLAS MPhM can be made according to the range of parameter values or according to the deviation of synthetic and practical logs. The ATLAS MPhM also includes visualization tools which demonstrate changes of water saturation and mineralization, and electrical resistivity both with time and depending on various model parameters.
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Electrophysical Properties of Bazhen Formation Based on the Numerical Inversion of Electrical Log Data
Authors M. Epov, K. Sukhorukova, V. Glinskikh, A. Petrov and A. FedoseevSummaryWe have developed new software for the numerical inversion of galvanic and induction measurements. Developed software is based on finite-element algorithms for 2D and 3D signals simulating and numerical analytical algorithms for electromagnetic signals transformations. Parallel computations on CPU and GPU are used to speed up the solution of direct problems in complex medium models. We use the BKZ (unfocused lateral logging tool with gradient arrays) and VEMKZ (high-frequency electromagnetic sounding tool) signals to estimate the electrical anisotropy and dielectric constant of impermeable high resistivity deposits. Using developed algorithms we performed the interpretation of practical data measured with SKL logging equipment on the Bazhenov Formation intervals in the central regions of Western Siberia. The electrophysical parameters of the Bazhenov Formation and stratigraphically identical deposits are studied, the material composition is determined, the main lithological types are identified. The results of the numerical inversion are consistent with laboratory measurements.
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Dynamic Analysis of CDP-3D Data in Order to Identify Promising Oil Sites in Achimov Deposits Using the Example of the Danenberg Oilfield
Authors M.Y. Ivanitskiy and A.A. LeonovSummaryThe paper presents the results of a dynamical analysis of CDP 3D seismic data from the Lower Cretaceous interval of the Aleksandrovsky fold in Tomsk region. The analysis and isolation of seismic phrases was done using seismic surveys, core samples, and GIS data from 14 wells drilled within the seismic network. In accordance with the results of the interpretation, a facies partition was performed and features of productive deposition within the Achimov stratum of the Megion series of the B16-20 formation of the Danenberg field were refined. The deposit is located in the Aleksandrovsky district of the Tomsk region.
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Prospects for Oil and Gas Bearing Deposits of the Upper Devonian in the Sections of LLC RN Severnaya Neft
Authors A.V. Samoyolov, I.G. Sverdiev and E.N. GruzdevSummaryThe carbonate strata of the Upper Devonian make up a significant portion of the sedimentary cover of the Timan-Pechora province. Domanikits are the source rocks for hydrocarbon deposits in the Upper Devonian sediments. Domanikites - highly bituminous siliceous-carbonate-clay deposits, which are the main generators of oil. Therefore, their study is given special attention. Numerous studies in the Timan-Pechora province have shown the prospect of prospecting and exploration of Domanikite deposits.
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Prospects for Determining Hydrocarbon Accumulations in the Structures of Allochtone of the Southern Cis-Patom Regional Trough
More LessSummaryThe paper discusses the features of the geological structure and the prospects for identifying new hydrocarbon accumulations in the southern part of the Cis-Patom regional trough. The results of geological and geophysical exploration carried out in the studied area are analyzed. According to seismic data, linear zones of anticlinal structures formation with elements of over-thrust tectonics are outlined, within which additional seismic surveys are necessary. Hydrocarbon prospects for the identified structures may be related to the carbonaceous horizons of the Vendian and Lower Cambrian. In order to increase the efficiency of the exploration process in the studied region, it is necessary to improve the traditional CDP reflection seismic survey and to use advanced techniques for data processing, as well as to integrate seismic exploration with other geophysical methods.
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Seismogeological Characteristics and Oil and Gas Potential of the Arctic Regions of the Siberian Platform
Authors V.A. Kontorovich, A.Y. Kalinin, L.M. Kalinina and M.V. SolovevSummaryDuring the research seismogeological models of the Neoproterozoic-Phanerozoic sedimentary complexes of the Siberian Platform (Anabar-Khatanga and Lena-Anabar oil and gas regions) northern part were constructed. It is concluded that in the Anabar-Khatanga and Lena-Anabar oil-and-gas areas Permian anticlinal traps complexly related to the salt diapirs have the best prospects of petroleum production. The carbonate deposits of Riphean-Carbon are also of interest. The existing geological and geophysical materials do not allow precisely stratify the Laptev Sea basin sedimentary cover. The thickness of platform deposits in which reaches 14–15 kilometers. From the structural-tectonic and general-scientific positions, this sedimentary basin is located in favorable conditions for the formation of hydrocarbon fields.
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Pyrolytic Studies as a Basis for an Objective Assessment of the Hydrocarbon Potential of the Bazhenov Formation in Western Siberia
Authors I.S. Gutman, G.N. Potemkin, A.Y. Baturin, M.Y. Maslanko, E.V. Kozlova, M.Y. Spasennih and T.D. BulatovSummaryPyrolytic Studies as a Basis for an Objective Assessment of the Hydrocarbon Potential of the Bazhenov Formation in Western Siberia.
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Features of Acoustic Emission Spectra when Filtering Gas Tthrough a Synthetic Porous Medium
Authors A. Abdrashitov, A.R. Galimzyanova, E.A. Marfin and Y.S. KokhanovaSummaryThe paper presents the results of the study of acoustic emission of a synthetic porous medium when filtering gas through it. The created samples were obtained by sintering microscopic glass beads in a muffle furnace. Scanning electron microscopy of samples revealed features of the morphology of the created samples. The characteristic and distinctive features of the filtration noise spectra in such media are established. The results obtained can be used to develop the theory of acoustic emission in saturated porous media when filtering through the bottom of various fluids.
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The Analysis of Lithologic Differences and Collectors on GIS in Pre-Jurassic Deposits in the West of the Tomsk Region
Authors O.V. Zolotova, O.V. Chikisheva and Z.A. PozdeevSummaryIn work the main methodical approaches according to the analysis of lithologic differences and collectors in deposits of a pre-Jurassic complex are considered.
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