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Geomodel 2017
- Conference date: September 11-14, 2017
- Location: Gelendzhik, Russia
- Published: 11 September 2017
41 - 60 of 131 results
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Investigation of Coefficient of Linear Thermal Expansion of Bazhenov Formation Rocks
Authors A.V. Gabova, E.M. Chekhonin, E.Y. Popov, E.G. Savelev, Y.A. Popov, E.V. Kozlova and I.A. KarpovSummaryDespite the importance of experimental data on coefficient of linear thermal expansion (CLTE) for geomechanical study of the Bazhenov formation (BF) rocks the literature on such data is practically absent. Differential CLTE values of BF rock samples and their variations within wide temperature intervals were determined including the degree of CLTE anisotropy with the equipment specially adapted for CLTE measurements on standard core samples. It was established that the values of CLTE of BF rocks exceed significantly (by hundreds percent) the typical values of CLTE of sedimentary rocks. It was shown that the CLTE of BF rocks has high degree of anisotropy and irregular behavior at elevated temperatures (up to 300°C), that can be related to different values of total organic carbon in BF rock samples. For the same series of rock samples thermal conductivity, that is sensitive indicator of changes in rock condition, was measured before and after heating the samples. Results showed that thermal conductivity of rock samples did not change after heating. It was established that the directions of main thermal conductivity and CLTE axes coincide practically.
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Atlas of the Multiphysical Models of Westen Siberia Reservoir
Authors G.V. Nesterova, I.N. Yeltsov, A.Y. Sobolev and I.V. SurodinaSummaryATLAS is the collection of multiphysical models of the typical reservoirs of Western Siberia. Both geomechanical, hydrodynamic, geoelectric processes in the vicinity of the borehole and electrical and electromagnetic well logs are jointly analyzed. The influence of each of the hydrophysical and geomechanical parameters on the process of mud filtrate invasion into the formation, evolution of the electrical resistivity distribution in the borehole environment, the electric and electromagnetic logs can be studied and visualised by using ATLAS.
Further development of ATLAS is aimed to creating interpreting system of the well geophysical and geological-technological studies on the basis of multiphysical reservoir models.
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Clarification of the Correlation and Conditions for the Formation of the Famenian Deposits of the Bashkir Arch Taking into Account Lithologic Types and New Well Data
Authors G.F. Baiburina and A.R. KudayarovaSummaryThe aim of the work was clarification of the correlation, analyse of the formation conditions and lithologic typification of the Famenian deposits of the Bashkir arch for the creation of petrophysical sediment model. The development of the Kamsko-Kinelskaya trough system predetermined the formation of 2 facies zones at the north of the Republic of Bashkortostan-shelf and onboard.
The correlation constructions were based on the geophysical data of exploratory and production wells that opened the investigated section. The boundaries of the substages of the Famenian deposits were traced according to the consolidated geological and geophysical sections adopted in the calculation of the reserves. The results of the correlation constructions are isochore maps for each substage.
Using data of wells with high core removal and microscopic description of sections the structural-lithological typification of the carbonate deposits of the Famenian layer was carried out.
According to the typification, 11 lithotypes are distinguished, which in turn are grouped into 4 main groups of rocks.
More differentiated thickness maps for each substage reflecting the facies zoning can be used to solve geological exploration problems. In turn, the additional criterion that confirms the selected facies zones, taking into account the correlation, is structural lithological typification
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Regional and Local Estimate of Hydrocarbon Potential of Shale Formation Arctic Sector West and East Siberia
Authors M.A. Lobusev, A.V. Bochkarev, A.M. Klokov and A.A. RepnikSummaryThe paper discusses the most important results of the generalization of studies of the Bazhenov complex of sediments in the unexplored areas of the Arctic sector of Western and Eastern Siberia for a comprehensive solution of the entire set of questions of the formation and development of hard to reach hydrocarbons deposits from bituminous shales.
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Elaboration of Lithofacies Characteristic of Terrigenous Deposits of Devonian in the Platform Area of the Republic of Bashkortostan
Authors A.A. Gubaydullina, A.S. Dushin and R.F. SharipovSummaryThe tasks of the research included detailed description of the core with further distinguishing of lithotypes, examination of geological aspects, generation of lithologic and facies maps. In the work the facies model of Devonian terrigenous stratum isformed; the model was obtained based on description of the core of 30 wells, analyses of 423 thin sections and granulometry data of 440 samples. The basis to distinguish lithotypes is layer-by-layer description of rocks according to lithological composition and fraction size as per granulometry, as well as peculiar textural features.In the result of performed analysis of the deposit core of Devonian terrigenous stratum there are 14 lithotypes, which served as a basis for transition to deposition environment and further distinguishing of facies. To specify depositional conditions regional data were used, according to which deposition of sediments in the period of formation of Devonian terrigenous stratum took place in conditions of shallow sea.According to comprehensive study data of the core and geophysical well logging, in the sections of the key-wells relevant facies were distinguished and facies inhomogeneity maps were generated (from the point of view of cyclic structure of horizons).
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Geonavigation Using Petroinfotech Prosystem Software Is One of the Main Methods of Successfully Directing Directional Wells on the Shelf of the Caspian Sea
Authors I. Khaliullov, A. Alekseev and A. ShtunSummaryOil and Gas Condensate Field. V. Filanovsky is located in the northern part of the water area of the Caspian Sea. The deposit is confined to the anticlinal uplift, characterized by a series of burst faults of fault type. The initial geological model of the deposit is based on the interpretation of 3D seismic data and GIS data in 3 reference wells. The accuracy of the position of the roof of the target productive horizon in the planning of the first horizontal well was estimated at +/- 20 m vertically, according to the structural constructs. Accumulated in OOO LUKOIL-Nizhnevolzhskneft drilling experience with the use of an integrated approach to the analysis of geological and geophysical information and decision making allows successful successful entry of complex horizontal wells. Implementation of these tasks requires an easy-to-use and mastering software covering all aspects of the planning of trajectories, posting and analysis of the results of horizontal drilling of trunks. An example of the use of PetroInfoTech ProSystem software with the posting of a doublebarrel horizontal well at the deposit is presented. V. Filanovsky.
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TEM and sTEM Electromagnetic Studies Application in Geological Settings of Arctic Zone of Western Siberia
SummaryThe article describes results of electromagnetic TEM and sTEM exploration in the settings of the Arctic zone of Western Siberia. The research consisted of a separate study of the upper and the lower parts of the section, which made it possible to obtain a detailed geoelectric model in the depth interval from the first meters to 5 km.
As a result of the research, the latest data on the distribution and thickness of permafrost rocks, deep channels of hydrocarbon migration, and prospects for the oil and gas potential of the study area were obtained.
The boundary of the cryolithozone distribution according to the sTEM is presumably located at a depth of about 450 – 470 m. In addition, for the first time, according to the data of the sTEM, the prerequisites for the presence of gas hydrate deposits in the shallow section are revealed. According to EM data, the geoelectric structure of the sedimentary rocks to a depth of 5 km was estimated by the method of deep 3D TEM, and promising oil and gas bearing objects in the sedimentary cover of the study area were identified.
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Productivity Parameters Prediction on Maps Using Neural Networks
Authors S.V. Egorov, I.I. Priezzhev, A.E. Schelkunov and E.A. GladkovSummaryThe presentation shows the technique and examples for predicting the oil and gas productivity parameters on the map on the basis of a deep neural network with hybrid training and Tikhonov regularization. The results of predicting the effective thickness in continental facies of Western Siberia are shown. The results of comparison between prediction maps obtained by the neural network technique and multidimensional regression are also shown. The advantages of a neural network are efficiency, higher resolution and better correlation coefficient with well data.
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First Experience of Geomechanics Modeling Using Transversely Isotropic Model, East Siberia
Authors A.A. Zinovyev, V.A. Pavlov, D.A. Maximov, E.P. Korelskiy, S.G. Strakhov, A.A. Eremeev and M.A. LushevSummaryIt is shown that Vendian terrigenous deposits are characterized by anisotropic mechanical properties. Transversely isotropic model with vertical axis of symmetry (TIV) was used for geomechanics model construction of one of the largest field in East Siberia.
In this paper an algorithm and main aspects of geomechanical modeling with respect to anisotropy of the rock mechanical properties are presented on example of particular field. The impact of anisotropy on results of geomechanical modeling is demonstrated, justifying the need to take into consideration anisotropic effects.
It is shown that anisotropy of rock mechanical properties has to be taken into account for more accurate results of different studies such as avoiding instabilities while drilling, hydraulic fracturing treatment design etc.
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DFN Modelling and Upscaling of the Naturally Fractured Field
Authors P.A. Kharitontseva, V.S. Rukavishnikov and S. GeigerSummaryThe work starts from the analysis of the literature data of the Teapot Dome field in order to determine the fracture mechanisms induced the fracturing. The Cooper and Lorenz, 2011 , theory was used as a basis of major fracture dips and azimuth. For the theory proving, the analysis of well with formation microimager (FMI), 48-x-28, was done. This well confirms the theory and the data from previous research (B.C Schwartz) can be used for discrete fracture model construction. As the major STOIIP is included in the matrix, the global geo-cellular matrix model was constructed first Then the several 3D grid sizes were created and the matrix properties were upscaled into the grids. For each grid size model the same discrete fracture model was constructed. The obtained fracture network parameters were upscaled into each grid by means of two methods Oda and Oda gold.
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A Complex of Geological and Geophysical Methods for Determining the Spatial Position of Zones with Different Filtration Properties in Limestones of the Khalah Formation
Authors A.G. Kobzev, S.A. Pereverzeva, T.A. Berdichevskaya, N.A. Vaskova and A.E. OvinnikovSummaryThe studied porous-cavernous carbonate rocks of the Khalah formation of the North-Western desert of Egypt are represented mainly by cavernous limestones, in the lower part of fine-grained chalky and marly limestones. Throughout the work area, limestones are blocked by younger sandstone calcareous with stratigraphic disagreement. In the roof of limestones, the weathering crust is represented by sections of scabrous rocks with loamy aggregate of 1 to 3 m in thickness. In the present study, two problems were solved:
- Study of the pore space of limestones of the Khalah formation
- The positions in the space of the zones of these rocks with different physical properties, characterizing permeability.
The solution of these problems is connected with the subsequent construction of industrial facilities in the territory under consideration. To solve these problems, a set of geological and geophysical methods was applied.
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Mathematical and Physical Simulation of Responses of An Electromagnetic Logging Tool for Studying Macroanizotropy of Sedimentary Deposits
Authors M.I. Epov, V.N. Glinskikh, V.N. Eremin, M.N. Nikitenko, A.N. Petrov, I.V. Surodina and I.V. MikhaylovSummaryThe presented work is devoted to development of an electromagnetic tool designed to study electrophysical parameters of sedimentary rocks characterized by macroanisotropic properties. Based on new theoretical and engineering ideas, we have proposed, designed and developed an electromagnetic tool with a high spatial resolution. We have developed complexes of algorithms and computer programs for the analysis of the new electromagnetic logging tool signals in spatially inhomogeneous media. The measured electromagnetic signals and their sensitivity functions to electrophysical parameters of the models are studied. With respect to processing and interpretation of the electromagnetic tool data, we have developed algorithms for filtering, transforming signals into apparent parameters, detecting formation boundaries, and numerical inversion aimed at the determination of the parameters of an isotropic and anisotropic formation, taking into consideration the host medium. We provide examples of the test results obtained in a metrological tank with electrolyte, as well as in natural and artificial freshwater reservoirs. A prototype of the electromagnetic tool was designed and created, with further testing of the prototype and its main components on laboratory test facilities and in conditions close to those in boreholes.
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The Forecast of Collectors of Deposits of D3 and P1 of a Northeast Part of the Horeyversky Depression by Results of the Seismofacial Analysis
By I. SverdievSummaryIn the study area North-East Khoreyverskaya basin reef development is confined to the domaniksyracusecoe and escelsa-sakmarian interval of the section. In the system of reefs are barrier reefs, and isometric buildings. In addition, escelsa-sakmarian interval allocated to a specific education - reef structures, extensive in area, but not related to barrier systems, separating different lithological-facies zone, named “ribbon” reefs and extensive shallow area is almost continuous development of reefs and associated facies. Seismic facies analysis was carried out within Passedskaya field. At the Deposit and adjacent areas are deposits, and identified numerous oil slicks in the lower Devonian, upper Devonian and lower Permian sediments. Forecast manifolds made with the help of seismic facies analysis based on seismic data. The study was performed by visual analysis of the shape of seismoscopes, using maps of the thicknesses between the maps of seismic attributes and classification analysis.
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N-Component Source Rock Kinetics in Oil and Gas Exploration in Russia
More LessSummarySome new kinetics from Russian well-known source rocks are provided in paper. The results of appliance of kinetics in petroleum system models in Tatar basin and West-Kuban basin are shown.
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Development of Cloud Computing Software for LWD Measurements and Geosteering
Authors A.R. Dudaev, A.Y. Sobolev and V.N. GlinskikhSummaryWe have developed a prototype of cloud computing software for logging-while-drilling and geosteering. For the first time ever, during the development of software for addressing the problems of petroleum geophysics, we apply software solutions based on state-of-the-art IT-technologies in the field of cloud computing, namely, cross-platform scalable distributed computing. We have created a client-server application written in JavaScript, which stores all user data in MongoDB. The application allows a user to send input data through message queues for processing by means of computing applications that run in a virtual environment. Processing results are displayed on a web page. We have tested the software under discussion on real practical data from the interval of a subhorizontal well from one of the Latitude Priob oil fields. When drilling highly deviated boreholes, an effective well targeting in the productive part of a reservoir is essential. Successful Russian experience of studying oil and gas wells is demonstrated by using the first Russian telemetry system for logging-while-drilling, intended for drilling wells with horizontal completions. At the present time, it is necessary to develop a multifunctional automated computer system for processing, visualization and interpretation of the data obtained with the complex under consideration.
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Development of Fractured Zones of Khadum Suite Deposits in East Caucasian Region
Authors A.S. Rakhmatullina, A. Postnikov, L. Miloserdova, O. Sivalneva, A. Musikhin, Y. Varov and I. SabirovSummaryThe Pre-Caucasian Oil and Gas Province is one of the oldest provinces in Russia, the main hydrocarbon reserves are associated with the Meso-Cenozoic sedimentary complex. Unlike the Mesozoic sedimentary complex, which is mainly represented by fractured-porous and porous reservoirs in terrigenous and carbonate rocks, the prospects of the Cenozoic sedimentary complex are associated with clayey porousfractured Paleogene reservoirs, including reservoirs in the deposits of the Khadum suite of the Early Paleogene.
Since the fractured component has a key role in the structure of the reservoir and in the filtration of fluids, it is necessary to develop a technique for developing of decompaction zones which are perspective to have a fractured reservoirs in the deposits of the Khadum suite, based on the complex of geological, geophysical and remote methods.
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Electrophysical, Hydrophysical and Geomechanical Characteristics of the Jurassic Oil Collector on Electric Well Logs
Authors D. Pavlova and I. YeltsovSummaryCoupled geomechanic and fluid flow analysis is applied to reduce ambiguity of the solution of the inverse problem and to increase reliability of oil reservoir parameters definition. Interpretation of the oil well electrics data on the basis of geophysical and hydrodynamic compatibility model was carried out with materials from the Russkinsky and the Tevlinsko-Russkinsky oil fields of Western Siberia. The object of research is the Jurassic oil collector which has a complex structure of penetration zone. Input parameters of joint model were determined from data of geophysical study of borehole and core analysis.
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Development of a Criteria Set for Estimation the Quality of Fluid Seals in the Deposits of the Famennian-Turney Carbonate Sequence in the Orenburg Region on the Basis of Core and Log Data
Authors N.N. Chikina, Y.I. Nikitin, E.V. Astafev and A.P. VilesovSummaryThe Upper Devonian reefs are one of the main factors of oil accumulations within the Orenburg region. Development of seals in the structures of differential compaction over the Upper-Fransian single basin reefs is not well studied and associated with the main prospects for discovering and involving production of new oil reserves. Identification of true and false carbonate seals by core and log data is based on the techniques and criteria, which lead to targeted search of unexplored oil reserves in the Famennian reservoirs not only in the already discovered Carboniferous deposits, but also in evaluating the prospects for newly acquired licensed areas.
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Formation Conditions of Carbonate Reservoirs in offshore of the Middle Caspian Petroleum Basin
Authors A. Maksiutova, A. Aseev and A. BlankSummaryMesozoic deposits in the Middle Caspian Sea have interested petroleum companies during long time with rich hydrocarbon potential, but they remain insufficiently studied for deep understanding of geological structure exist deposits and perspective objects.
The Upper Jurassic carbonate reservoirs, whose productivity is mainly associated with the secondary porosity, is an intricate object of study at one of the Karpinsko-Mangyshlak deposits. The complexity of the formation condition reconstruction of carbonate reservoirs is due to the large number of geological factors affecting the formation of the original void space, from which formation of the secondary porosity in future depends.
Sedimentation analysis of the Upper Jurassic carbonate reservoirs distribution in offshore of the Middle Caspian petroleum basin represented their confinement to the shallow inner ramp facies (lagoon and sandbanks) and the mid ramp facies.
In such in manner, with the knowledge of the geological structure of the area, using a technique of separate core data by lithotypes, well loging and FMI data, by combining them with using a map of attributes extracted from the acoustic impedance cube, a facial map can be constructed to better orientate the geological development of the area and the predict of productive zones.
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Classification of Hydrocarbons. the Results of the First Year of Implementation
Authors R.M. Kuramshin, A.V. Osipov and S.G. SerovSummaryRosnedra has formed a new algorithm (order FAN No. 455) in 2016 and a special Commission of the Federal subsoil resources management Agency for approval conducted by the State expertise (SE). FBU GKZ has developed and implemented a new scheme for the selection of experts and conducting SE.
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