- Home
- Conferences
- Conference Proceedings
- Conferences
Geomodel 2012 - 14th EAGE science and applied research conference on oil and gas geological exploration and development
- Conference date: 10 Sep 2012 - 14 Sep 2012
- Location: Gelendzhik, Russia
- ISBN: 978-90-73834-36-1
- Published: 10 September 2012
21 - 40 of 82 results
-
-
Обработка широкоазимутальных данных с использованием интерполяции COMFI 5D
Authors Ю.Е. Биряльцева and T.А. ГречишниковаSeismic amplitude and velocity variation with azimuth is typical for azimuthally anisotropic medium. The estimation of seismic anisotropy by qualitative measures, such as fracture orientation, and quantitative evaluations tied with well data, allow to get more information for further fracture reservoirs exploration. Seismic data processing of wide-azimuth 3D data with respect to anisotropy estimation includes special technical procedures. In this paper some techniques of 3D azimuthal processing in West Siberia for HTI-anisotropy estimation are discussed. Fracture-induced anisotropy assumed to present in the data because of amplitude and velocity distribution specification. Data were splitted into 6 azimuth groups; PSDM with further CIP-RMO velocity corrections was run for every group. For more stable azimuthal characterization input wide-azimuth data need to possess sufficient fold. An interpolation technique with respect to the azimuth of the seismic traces, such as COMFI 5D, enhances quality of regularized data and reduces regularization artifacts. Final seismic data are suitable for further AVO-AVA azimuthal inversion. In this paper discusses implementation of 5D regularization technique for azimuthal data processing based on real project
-
-
-
Применение 5D интерполяции с помощью метода OMP, основанного на итеративном пересчете коэффициентов разложения и минимизации невязки способом наименьших квадратов
Authors О.Н. Сафронова, А.Е. Королев and Zvi KorenThe paper overviews some results of 5D regularization on model and real data in order of missing information reconstruction. Besides there is description of used Orthogonal Matching Pursuit (OMP) algorithm, which recalculate all the expansion coefficients after a new component has been added to the expansion
-
-
-
применение современных технологий обработки и глубинно-скоростного моделирования массивных сейсмических съемок на примере северо-восточной части акватории черного моря
Authors Л.A. Гурвич, А. Яковлев, А. Юрикова, А. Носов, К. Старков and К. ТайсонThis work represents the results of modern seismic processing applications, such as 5D regularization and Surface Related Multiple Elimination (SRME), as well as the results of depth velocity model building in the Northeast part of Black Sea. These procedures allow to produce more detailed and well focused seismic image, and also to build the adequate depth velocity model
-
-
-
Альтернативные методы расчета и применения амплитудных поправок при ВСА-обработке сейсмических данных 2Д/3Д
Authors Р.Ф. Атнабаев and К.В. УсковThe necessity of true amplitude seismic processing is highlighted. An overview of causes of amplitude anomalies in 2D-3D seismic data is presented. An overview of flaws of amplitude correction methods and tools currently available in modern seismic processing packages is made. An alternative method, based on robust statistical estimation of data, is proposed. Results of the different amplitude correction methods are quantitatively compared on real 2D and 3D seismic data, witnessing in favor of the alternative method. Plans of the further improvement of the alternative method are presented
-
-
-
Коррекция статических поправок с сохранением кинематики отраженных волн, соответствующих пластовой модели среды
Authors Р.Т. Давлетханов, С.Л. Лангман and О.А. СилаенковAlmost all areas of seismic explorations doing on a land are characterized by presence of low-velocity zone in combination with varying surface relief. Both of these factors distort seismic information coming up from deeper target horizons. In order to exclude their effect usually use time shifts – statics. Wavefield redatuming is based on an assumption that ray paths of reflected waves between observation surface and datum surface are vertical in spite of source-receiver offset. But the assumption about vertical ray paths is relatively exact only in interval, limited by observation surface and low-velocity zone bottom. That’s why it’s desirable to set datum surface as closely to low-velocity zone bottom as possible, because otherwise NMO of the reflectors would be distorted. The best way is to identify low-velocity zone bottom and datum surface, and to use more proper methods (e. g. wavefield transform) for wavefield redatuming to any datum surface. But if the datum surface isn’t flat the hodograph of the reflected waves would have very difficult form, that distinct from hyperbola drastically. So, conventional methods based on assumption of hyperbolical form of hodographs aren’t applicable. In this paper we suggest a new method for statics correction based on kinematic-dynamic transformation developed in Seismotech, Ltd.
-
-
-
Новейшие технологии сейсмического мониторинга 4D за разработкой морских месторождений нефти и газа
Authors Ю.П. Ампилов and Батурин Д.Г.The Analysis of the possibilities and problems of marine 4D technologies using traditional and fiber optic systems. Case studies in Brazil and North Sea. The possibilities for Russian shelf
-
-
-
Опыт временной обработки обменных волн
Authors Б.С. Есинов and А.Е. КоролевThe paper overviews some results of 2D converted waves data processing. Converted waves are really the combination of P-waves & S-waves. The P-wave pushes the particles of material ahead of it, causing compression and expansion of the material. The P-wave is the type of wave assumed for conventional seismic exploration. A wave in which the particle motion is at right-angles to the direction of propagation is known as a S-wave
-
-
-
Строение и состав юрского седиментационного комплекса Баренцева моря
Authors А.А. Суслова and А.В. СтупаковаProductivity of the Jurassic deposits of the Barents Sea shelf have been proved on a number of the hydrocarbon fields on the Russian and Norwegian sectors. Besides significant accumulations of gas and condensate, a new first oil field have been discovered on the western part of the shelf. Sedimentary cycles can be marked out in the Jurassic section due to several periodic changes of deposition. High prospective sandstone reservoirs have been deposited in the regressive periods. Seals are represented by the regional shale layers which were formed during transgressions. A new oil and gas reservoirs can be found not only on the anticline structures. A huge amount of large lithological traps can be marked out
-
-
-
Анализ нефтегазоносной системы северного шельфа Синая
By А.А. КуркинThe studied area is located on the boundary between Levant basin, Sinai sub-plate and eastern Nile cone, all of them affecting its evolution and producing a complex structural and stratigraphical composition. Two major megasequences with different structural styles and trends can be determined in the area, separated by Messinian layer consisting of evaporates changing laterally into shales and carbonates. This layer isolates tectonic stresses and controls the distribution of structural features in the overlying sequence. In Pre-Messinian, there are structural features that correspond to the regional geology, that were not previously recognized in the area. One of the examples is Pelusium shear zone, which was determined being active at Oligocene with sinistral strike-slip movement, reactivating the inverted structures and producing high narrow anticlines. Sediment input from Nile had mostly played fewer role in the evolution of Post-Messinian sequence than the local source in SE, and the direction of gravitational extension was mostly NW. Petroleum system analysis showed that Cenozoic shales are not mature, hence the hydrocarbon potential of Post-Messinian turbidite sandstones is limited. The strong inversion and strike-slip movement had breached seals of Pre-Messinian structures, explaining dry wells, although there are some promising plays which are the structures without faults
-
-
-
Новые поисковые направления залежей УВ в восточном Ставрополье
Authors Д.В. Терещенко and А.В. СавиновThe new search direction of hydrocarbon deposits in the eastern Stavropol
-
-
-
Новые представления о структурном строении северной зоны бортовых уступов Припятского прогиба
Authors С.Б. Истомин, Б.А. Дубинин and В.М. ГромыкоSuggested the concept of tectonic structure of the North Zone of Prypiat Depression, based on interpretation of 3D-seismic and well data with using regional tectonic reconstructions. Idea is that this zone of Prypiat paleorift formed in transpression conditions. Rifting stage of Prypiat paleorift development relates to Devonian period. At this time Bragisko-Loevsky Block has been introduced to Prypiat-Dnieper bend and devided it into two parts. This process was accompanied by a compression stress. “Flower” structure of faults interpreted in the North Zone of Prypiat Depression and thicknesses of formations in wells confirm the assumption
-
-
-
Прогноз типов ловушек и их локализация в отложениях терригенного комплекса венда центральной части Лено-Тунгусской провинции
More LessVast majority of oil and gas deposits are associated with zones of regional attenuation of vendian terrigenous complex in Leno-Tungussian province. Decreasing of thickness of terrigenous complex is associating with isochronous depositional break that determines of stratigraphical contact with basement. As a result of analysis of structural and thickness maps there was constructed a scheme of localization of non-structural traps within Kaangian upfold and Baikit anteclise
-
-
-
Анализ структурных построений в пределах Таначи-Моктаконского нефтегазоносного района (Красноярский край)
By И.А. ГубинThe sedimentary rocks of research territory contain a large number of trappean intrusions. These intrusions complicate structural plans of the reflecting seismic horizons and influence distribution of hydrocarbon accumulations. For correct creation of structural maps according to seismic data it is necessary to consider lateral variations of interval velocity. These variations are caused by non-uniform distribution of traprocks in the sediments. Revealed with the help seismic logging in the deep wells velocity variations on each seismic sequence allowed to increase reliability of seismic structural constructions. Based on complex interpretation of seismic data, well logging and results of deep drilling regularities of changing traprock thickness within each seismic sequence were revealed, maps of thickness and percentage of intrusive bodies were made. The analysis of these maps showed that intrusive sheets caused essential impact on structural plans above the Usolsky horizon. These intrusions give occasion to rearrangement, or to destruction of tectonic structures. Complication of the structural plan is fixed only for top levels, above the Lower Cambrian where the saturation of traprocks is very high and reaches 50 % and above. The thickness of traprocks is necessary to take into account at recovery of structural history
-
-
-
Перспективы поиска литолого-структурных ловушек УВ в российском секторе шельфа Азовского моря
Authors А.В. Дердуга and М.В. ГубаревAt the current time search lithological hydrocarbon traps in the Azov Sea is the most promising area of growth of the resource base. The main probable reserves are concentrated in the Cretaceous-Eocene sediments of the Azov-South step. Another aspect - litho-structural traps hydrocarbons in sediments Chokrak southwestern circuit Temryuk syncline Indol-Kuban basin. Yet, there remain unresolved issues related to the quality and density of seismic data, the lack of reliable criteria for prediction of reservoir and hydrocarbon saturation
-
-
-
Выделение зон литологического замещения пласта с использованием геостатистической сейсмической инверсии на примере одного из месторождений Западной Сибири
Authors К.Е. Филиппова, И.С. Цыбулькина and В.М. ВингаловThe reservoir frequencies volume obtained from multiple realizations of geostatistical inversion is a useful tool for accurate analysis of different possible geological scenarios. It allows studying details of a reservoir structure, identifying pinch-outs and facial replacement zones. The obtained results can be used for geological and hydrodynamic model improvement and also for planning and optimizing the production well pattern
-
-
-
Методика выполнения инверсионных преобразований данных 3D сейсморазведки в акустически аномальных пластах: итеративный подход
Authors М.Ю. Шаповалов and Г.А. ХохловAcoustic inversion in high contrast media: iterative approach
-
-
-
Сейсмофациальный анализ карбонатных отложений пермско-карбонового комплекса в пределах Лабаганского месторождения (по данным ООО «НК «Роснефть-НТЦ»)
Authors И.Г. Свердиев and А.В. СамойловThis work is devoted to the study of the structure of the carbonate sediments of the Permo-Carboniferous interval within the Labagan field (data of the oil company NK Rosneft-NTC)
-
-
-
Выделение и прогноз коллекторских свойств в рифовых телах по данным сейсморазведки на примере участка Поволжья
More LessTwo methods of carbonate collector properties forecasting by using 2D and 3D seismic data are considered. Both methods show good results despite on some troubles related with data analysis and interpretations. Data processing with using multipletrace method allows to find correlation of rift anomalies at 3D and 2D seismic data. The rift bodies are found by using the acoustic inversion of seismic data, attributive analysis and neuron network simulation. This analysis allows forecasting the collector properties for territory of 2D seismic survey using local 3D cubes. Thus if velocities and anomalies related with rift bodies are found correctly, the waives picture can be determined without artificial structures and results of rift bodies search and their properties within 3D cubes can be extended on the whole 2D seismic survey domain
-
-
-
Изучение перспективности задонских отложений одного из районов ТПП с использованием акустической инверсии
By А.В. КоролевThe author demonstrates the method of acoustic impedance calculation in various facies zones of carbonate sediments. Previously log and seismic data quality control and preparing for seismic inversion technique were made. Attributes received from acoustic impedance cube has laid down in a basis of reservoir properties prediction of Zadonsky Formation
-
-
-
Изучение ачимовских и юрских отложений Западной Сибири с применением технологий Spectral decomposition и Colour blending
Authors Д.Н. Мясоедов, Т.В. Давыдова and А.П. ЯковлевIn this paper analyzes the effectiveness of technologies that increase the detail of the seismic images, such as the Spectral Decomposition and Color Blending on ach and Jurassic deposits of Western Siberia. Ach and Jurassic deposits of Western Siberia are a complex system of different properties of geological bodies, such as channels of turbidite flows, sandy-silty alluvial fans and channels. For the detection of deposits in the sediments of this type is not enough to get into the structure, it is necessary to allocate sand bodies and share their origin. Quite often, a simple analysis of seismic attributes, is insufficient to meet the challenges of high detail. Spectral Decomposition technology allows expanding the seismic record to the narrow frequency band, to focus on the target object, and the imposition of multiple attributes in different colors allows you to see the same image all the geological picture in general
-