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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
1 - 50 of 82 results
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Новые данные по перспективам нефтегазоносности верхнеюрских отложений северо-востока Томской области
By Г.Е. СилкинGeological and geophysical studies of the north-east territory of Tomsk region are currently going on at a regional level. Assessments of its perspectives by various researchers are controversial. A prevailing opinion on low hydrocarbon-bearing potential of the given territory is based on the results of previously performed geological prospecting works that, on the whole, brought no positive results. The paper considers new geological and geophysical data acquired in recent years – regional seismic surveys and reinterpretation of logging, drilling and testing data available for "archived" prospecting wells. Conclusions on possible productivity of Upper-Jurassic deposits in the area of Kosetskaya depression were made following the results of logging and seismic survey interpretation and taking into account latest discoveries made in a bordering territory. Some recommendations on further geological and prospecting operations in the territory are provided considering particularities of its geological structure
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Прогноз коллекторских свойств ачимовских отложений в условиях развития на площади "аномального" строения баженовских отложений
Authors П.Г. Пономаренко, К.Е. Филиппова, И.С. Цыбулькина, О.А. Шевчук and В.М. ВингаловWell known achimovian deposits widely spread in Western-Siberian petroleum province, are presented by frequently interbedding sandstones, siltstones and mudstones with thickness range of 5-10 m (thickness of separate sandstone layers reaches 20-45 m) and characterized by low acoustic contrast which gives very weak events on seismic data. In this context correlation of reflectors inside achimovian interval is a very challenging task. Besides that achimovian layers on a major part of Western Siberia have clinoformian structure. Formation tops correlation in such environment is far not a trivial problem without incorporation of seismic data. «Anomaly» bazhenian structure in the target area makes achimovian reservoirs interpretation extremely complicated. Presented work shows the overall performance of seismic AVO/AVA inversions technology for studying a structure of clinoformian achimovian deposits. By application of seismic inversion techniques the volume reservoir distribution in achimovian formation complex where obtained. Lithology and facial model of target layers were detailed and forecast of net and pay reservoir thicknesses for the each achimovian layer where obtained as well as recommendation for further exploration drilling were given
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Комплексирование методов потенциальных полей, сейсморазведки и бурения для прогноза гипергенных коллекторов доюрского основания
Authors Т.А. Кононова, Л.В. Черновец and Р.Р. ХалимоваPaleozoic complex within the West Siberian basin is considered as a hydrocarbon prospective object. It is known that supergene reservoir of upper part of Paleozoic basement can contain fluids. In this article an integrated approach to the supergene reservoir detection and mapping is described. Firstly gravity and magnetic exploration data was used to work out a structural model of the Central Uvat region. Then core data was used to connect potential field data and lithological composition of the basement rocks. Also seismic attributes and seismic facies analysis were involved to detect fracture zones in the upper part of the basement and define shapes of geological bodies. Combining all the data potential reservoir rocks of the upper part of the basement were mapped
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Литолого-фациальный и седиментологический анализ обстановок осадконакопления верхнеюрских и меловых отложений Дружно-Южно-Ягунской площади на стыке двух месторождений нефти в Западной Сибири
Authors Е.А. Швецова, В.М. Вингалов, А.А. Копыльцов and Н.А. БалдинаTo construct lithofacies models of the upper Jurassic and neocomian formation. This model is considered to be an important part of the 3D model of the oil reservoir. Constructing lithofacies models allows for more accurate prediction of geologic structure of the interwell space and effective exploratory and production well engineering
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Литолого-фациальная характеристика верхнеюрских продуктивных отложений ямало-тазовской мегасинеклизы
Authors Н.Н. Петракова and Н.И. КоробоваLast years when anticline traps in West Siberian basin are almost studied, the most urgent became facies analysis of clastic sediments, which allows to predict lithological traps and optimize the development of drilled deposits. This work is an example of facial conditions recovery using core and log data of the Upper Jurassic productive deposits on one of the fields within the Yamalo-Tazovskaya megasyneclise. There are two Upper Jurassic producing layers: U1-1 and U1-2. Core data from 5 wells and well logs from 31 wells of the same field were analyzed. Based on the core data the layer U1-2 was identified as terrigenous alluvial and delta, while the layer U1-1 consists of terrigenous delta and coastal-marine deposits. Well logs data was also used to specificate the facial scheme with curve models
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Выбор направлений геологоразведочных работ на нефть и газ в силурийских отложениях Верхнепечорской впадины
More LessVerhnepechorskaya depression is one of the underexplored area within the old oil-producing Timan-Pechora basin. Studied Silurian deposit lie relatively deep, so exploration risks are high and it requires preliminary petroleum analysis. Using available geological data hydrocarbon potential of Silurian deposit was described, reservoir properties, seal effectiveness and trap types were characterized. In summary there are two work streams – reef traps and tectonic and stratigraphic traps
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Коллекторские свойства нижнепермских карбонатных пород акваториальной части Варандей-Адъзвинской структурной зоны
Authors Р.С. Сауткин and А.Е. РыжовThe hydrocarbon productivity of Paleozoic carbonate reservoirs has been proved in the offshore prolongation of the Sorokin swell. The Prirazlomnoe oil field was discovered in 1989 by the prospecting well No.1 drilling to the depth 3100 m in the dome part of the anticline fold. The productive horizon is represented by two carbonate beds of different composition and origin. The upper highly porous bed of Asselian age is built by organogenic-clastic limestones and overlaid by shales of Artinskian-Kungurian age. The method of capillary saturation of rocks, designed to assess the structural features of the complex void space of a carbonate reservoir, enables to evaluate the ratio of voids of different types, namely the content share of pores, voids and fractures, i.e. to evaluate the complex reservoir type. This evaluation includes fractures of various orientation that determine the direction of filtration and isotropic rocks permeability, morphology and genesis of voids – the emergence of "newly generated" vug and development of the "inherited" vug; the characteristic of fractures variations with depth, different intensity of fractures in rocks and substantiation of rocks fractures changes in the reservoir
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Прогноз распространения коллекторов по результатам геостатистической инверсии в сложнопостроенном карбонатном месторождении
Authors И.А. Бабенко, Т.В. Некрасова and С.Л. ФедотовThe purpose was to predict oil-saturated reservoir layers in the carbonate section. The main feature and the complexity of the forecast was the small thickness of the target interval and the thin-layer reservoir
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О перспективах нефтегазоносности венд-рифейских отложений на территории Башкортостана
Authors Р.А. Зименков, В.Ф. Селянин and В.В. КиселевOn the basis of reprocessing and reinterpretation of CMP-2D seismic data along regional lines, acquired on the territory of platform Bashkiria in the beginning of the XXI century there were allocated 8 potentially prospective hydrocarbon objects in the deposits of the Riphean clastic-carbonate sequences. One of them is Kushkul structure of inversion type in the deposits of the Lower Riphean age of Kama-Belskaya depression (KBD), located in 20 km. to the East of Kushkul field in the Paleozoic deposits. It is recommended to make a thickening network of 2D lines with the aim of updating the geological model of the object and choosing an optimal point of a prospect well location in the Riphean deposits
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Геологическое строение и перспективы нефтегазоносности Юрюзано-Сылвенской депрессии
Authors Р.Р. Ситдиков, В.Ф. Селянин and А.В. ПогрецкийThe structure and the prospects of the depression are considered on the model of Bukharovskoye field, situated in the intersection area of Uriuzan-Silvenskoye depression (USD) with the Western Ural zone of folding (WUZF). USD is the largest structure of the Cis-Ural foredeep. The oil and gas potential of the region is connected with the discovery of Bukharovskoye gas field in 1969. Productive deposits are mid-carboniferous terrigenous-carbonate ones. In 2005-2010 seismic exploration MOGT -2D and MOGT -3D works were carried out on the territory of Bukharovskoye field. The report is based upon the results of the works. It is recommended to drill 10 prospecting and 2 exploration wells on the field. The total resources of gas are about 50 billion cub. m. Having analyzed the material it is possible to make an assumption of the essential gas potential of the region considered
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Особенности геологического строения вендских отложений в пределах юго-восточной части Южно-Татарского свода
Authors И.Н. Низамутдинова, Л.Б. Петрыкина and Нурмухаметова А.А.As a result, complex analysis geological and geophysical data for regional work was a map of the surface of the Vendian in south-eastern part of the South Tatar arch. The main elements of the Vendian and Early Paleozoic tectonics in relation to their potential oil and gas content. It is suggested for the origin of the inversion Shkapovskoy structure
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Возможные пути совершенствования метода многократных перекрытий в сейсморазведке
Authors В.И. Бондарев, С.М. Крылатков and И.А. КурашовThe history of the formation of the modern technology of seismic CDP-3D, used in prospecting for oil and gas. This story stands four-level process, significantly different in the technology used and results achieved. Although no clear boundaries between the stages to establish not simply noticed that the average step size is close to 25-35 years. Each level of technology includes a phase, the formation of technology, the period of widespread use in the manufacture and final stage of fading interest in this technology. Each stage is based on the use of seismic instruments and equipment of the time. In the depths of the previous stage will certainly conceived of a new seismic technology level, which makes it possible to objectively seismic each next technological level of the wider and more efficient. From the analysis of the evolution of the technical characteristics of seismic CDP-3D is a forecast of the possible ways of further improving the seismic for a period of 10-15 years. As evidence, whether an evolutionary improvement path analyzes of experimental materials and methodological work carried out by Sercel in the Middle East. The question of which way would be to develop and improve seismic beyond the next 10-15 years. We discuss also another way of seismic - a way based on the broad introduction of the notion of the diffraction wave.
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Как глобальные спутниковые системы трансформируют регистрацию данных наземной сейсморазведки
By Д.А. МужноThe contributions of global navigation satellite systems, such as the GPS, for source and receiver positioning and timing are highlighted. While GPS positioning has been used for several decades, the impact of GPS timing on land acquisition is recent (2005). By enabling the time-stamping of all seismic samples in the recorder as well as in the autonomous receiver stations, it offers the possibility to synchronize all elements of a hybrid spread made of cable-based and cable-free segments. The same flexibility is present on the source side as soon as vibrators are able to define by themselves the position and the start time of each shot (T0). By combining these possibilities different acquisition architectures are made available to improve productivity depending on terrain conditions
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Системный подход к выбору методик и проектированию сейсморазведочных работ 3D
Authors А.Б. Титов, С. Горбачев, А. Колюбакин, Е. Бондарев and Д. ИсаковSystematic approach to the selection procedures and Proektirovaniyayu
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Весовое суммирование как редактор нестационарных помех в невзрывной сейсморавзедке
Authors А.В. Череповский and Р.М. ГафаровWind noise, traffic noise, and non-stationary impulsive noise seriously degrade the quality of non-explosive seismic data in many regions. Vertical stacking in the field or two-dimensional noise suppression procedures (such as FK) at the processing stage can not attenuate high-amplitude noise of the mentioned types. At the same time, non-stationary noise can be efficiently removed at the stage of data acquisition by diversity stacking. This procedure does not distort the initial relative amplitudes of the signal and consequently can be recommended for wide adoption. The parameters of the diversity stacking should be selected during the field trials
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Полноазимутальная наземная сейсморазведка с высокой плотностью наблюдений – новые методические и технические решения
Authors А.В. Череповский and Д.А. МужноFull-azimuth high-density (FA HD) seismic surveys are shot from 2005, and their advantages in reservoir characterization and seismic imaging have been demonstrated in a number of recent publications. In accordance with the principles of G.Vermeer, the grids of shot and receiver points should be equivalent, but a FA HD survey can be planned and shot in different ways: using a square template and a single source or narrow template and multiple sources. The latter configuration is more suitable for shooting high-productivity surveys, preferably in open terrain conditions. In case of ecologically sensitive and restricted access areas, new technical solutions have been recently offered, such as a combination of cable-based and cable-less recording equipment
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Обработка данных Slip Sweep без потери качества получаемых данных в условиях центральной части России
By Р.М. ГафаровThe article tells about the way of eliminating the neighboring source positions interference when carrying out field seismic works by Slip Sweep method. The principle of struggle with disturbance is based on frequent filtration of the received signal on the stage of obtaining vibrorecords to slip sweep convolution. Since the interference from neighboring SP is artificial with known parameters, therefore it is predictable. Using this property and applying the time-variable frequent limit filter (tracking filter) the author was able to suppress the wave-interference significantly pointing out the useful signal. In addition, irregular waves-interference (microseisms) are removed. This method allows increasing vibroseis source productivity in several times not only without quality deterioration, but also with improvement compared to Flip flop standard method
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Опыт проектирования сейсмических работ 3D для разведки малоразмерных алмазоносных объектов в Республике Саха (Якутия)
Authors Т.А. Столбова and Л.В. МаксимкинаReflection seismic can be a very useful technique for exploration of kimberlite pipes. High-frequency 2D seismic exploration for diamonds was carried out in Yakutia (Sakha) by Botuobinskaya geological exploration company for many years. Surface seismic methods are not designed for direct detection of vertical bodies such as a pipe. However, a kimberlite pipe may be inferred from seismic data indirectly by observing the termination of reflections against its flanks. To successfully delineate and map small-size diamondiferous kimberlite pipes, 3D seismic will be adopted from the next season. To define optimum acquisition geometry, presurvey 3D ray-trace modelling was carried out. The template dimensions and orientation as well as receiver and source intervals were defined using the results of seismic modelling of geological features. Synthetic data sets were processed through stacks, and bin attributes were analyzed
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Особенности сейсморазведочных работ в Исламской республике Мавритания
Authors Д.К. Арсланов and Ю.М. ГордеевThis report describes specificity of seismic surveying in the Islamic Republic of Mauritania on a strip of saline salt marshes and salt lakes (sebkha), which stretch along the low-lying sandy coast. To overcome these conditions and to achieve maximum quality during drilling, seismic unwinding and registration of seismic waves have been used non-standard techniques. Despite the complexity of the seismic survey taken by organizational and technical measures on the part of the performer and the supervisors contributed to the achievement of good quality seismic data, which allowed them to successfully carry out further processing and interpretation, geological solve all problems
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Фильтрация изображений с помощью вектора Умова-Пойнтинга для задач сейсмической миграции в обратном времени
By В.Г. БайдинIn the work the modification of RTM method is introduced. For this purpose the information about wave propagation direction is extracted from Umov-Poynting vector. Using directional parameters of wavefields several filters are constructed: backpropagation filter, dip filter and P/S wave separation in elastic medium
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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
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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
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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
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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
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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.
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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)
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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
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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
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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
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Распознавание разломной природы сланцевых залежей с использованием сейсмических атрибутов
Authors В.П. Рыбаков and Г. ДжонсSuccessful development of unconventional shale gas plays in North America can help with similar development in Europe, where traditional oil and gas resources studied extensively for decades. Optimizing the development of unconventional plays is difficult due to extremely low permeability, abnormal pressure and sonic velocity changes in layers. To ensure sufficient production rates and to maintain economic feasibility hydraulic fracturing should be modeled precisely within production zone to provide maximum areal contact with reservoir. While designing treatment parameters for fracing wells and given the high variability and heterogeneity of shale it’s imperative to delineate different zones (ductile and brittle) within shale. To solve such problem in highly faulted and fractured areas geoscientists traditionally used geometric post-stack seismic attributes (e.g., coherency or curvature) as they are the best for that purpose – detecting and delineating faults, fractures or any discontinuities. In our investigation we went further and studied geophysical responses of shale gas plays using pre-stack gathers and computed AVO attributes. Here we wanted to share the results of successful use of both – post-stack and pre-stack attributes for detection and delineation of different zones in shale plays and determination of gas distribution in shale plays at tuning thickness
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Особенности обработки данных 3D/3C
Authors С.В. Лягушов, В.М. Вингалов and Е.Н. ВаженинData quality analysis for five 3D-3C seismic projects in Western Siberia, selection of the proper system for recording horizontal components, analysis of data processing flow chart, balancing via radial component multiplicity, time migration with updating Vp velocities and Vp/Vs ratio, post-migration seismic data cube analysis, comparison of compression and mode-converted waves reflected from the same surface, analysis of the orographic effect on mode-converted waves amplitudes
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Применение результатов полноазимутальной угловой миграции при выполнении анализа анизотропии 3Д сейсмических данных
Authors E.М. Вороновичева, О.Н. Алекснина and C.H. ПтецовResults of 3D full-azimuthal angle migration have been used for analysis of anisotropy properties of the oil field in the central Russia. System EarthStudy 360 (Paradigm) have been applied for HTI-analysis. Maps of Tomsen’s parameter delta2 and HTI-azimuth have been build and compared with results of Avaz-inversion and flow rate of wells on the survey area
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Подавление на данных ВСП осцилляций, обусловленных гидроволной
More LessThe excitation of elastic waves on the Earth surface near the well head, can lead to tube wave generation in the borehole. Tube wave amplitude is huge comparing the reflecting signals. Tube-wave is not directly recorded to the VSP tool but generated the coupling oscillations of mechanical system sonde-to-borehole wall. Sonde coupling effect is a well-known in borehole seismic. It appears when body waves P or S arrive to the downhole tool. But the tube wave arrival generates rather strong oscillations. These natural oscillations are usually visible on the VSP wave-field. The amplitude of reportable oscillations varies depending on the quality of cement bond conditions and quality of the VSP tool clamping. Band limitedness of recorded signal and variability of amplitude produce serious problems in the suppression of tube wave noise on VSP data. The main goal of the paper is tube wave investigation and development the tube wave suppression algorithm
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Уточнение структуры и прогноз свойств коллекторов на основе данных скважинной сейсморазведки
Authors Д.Р. Иркабаев and А.Я. АдиевToday, vertical seismic profiling (VSP) plays a key role in providing the oil companies of valuable information not only about the deep properties of the geologic section, but also about its geological structure. The composition of a wide range of problems solved by borehole seismic, include: the study of the formation and propagation of the wave fields at interior points of the environment, the selection of different types of waves, the determination of their nature and structure refinement of near-well space, evaluation of the effective thickness of the collectors, the identification of zones of increased porosity and carbonate rocks. In this paper we present the results and shows the need for an integrated approach to the interpretation of borehole seismic data based on procedures involving the inversion and the other phase-frequency transformation of temporary seismic sections
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Опыт применения технологии расчета плотностной и скоростной моделей и статических поправок по гравиметрическим данным при обработке сейсмических данных, полученных в Восточной Сибири
Authors В.А. Кочнев, И.В. Гоз, В.С. Поляков, С.Б. Мячев, Н.В. Поспеева and И.В. НифонтовThe use of gravity data to estimate parameters and to determine near-surface static corrections is becoming more popular. Of particular importance is the application of this method at the Siberian platform, where amplitudes of the structures are small, and the influence of strong near-surface inhomogeneities greatly distorts the wave pattern. We offer a technology of co-processing and interpretation of seismic and gravity data. The technology is based on the adaptive methods for inverse problems of gravimetry and magnetometry, implemented in packages ADG-3D and the ADM-3D, as well as existing seismic data processing packages
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Учебники для высшего сейсмического образования в СССР и России: история их создания и содержание
Authors В.И. Бондарев, С.М. Крылатков and Н.А. КрылатковаIn the thirties of the 20th century one of the geophysical methods for studying the Earth's interior - thanks to the success of seismic prospecting for oil and gas comes to the forefront of exploration geophysics. In this regard, in our country there is a need to train geoscientists in the field of seismic exploration. As the first national high school textbook used in seismic monograph of prof. P.T. Sokolov. In view of the historical features of engineering training in Russia is based on a high theoretical level of teaching. Therefore, even the first textbooks on seismic calculated on a fairly thorough study a wide range of issues of theory, methodology and technology of this method. This paper examines the main stages in the creation of national textbooks on seismic data, commented on the content of all the official textbooks.
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Оптимизация построения 3D куба литологии при моделировании залежей нефти
By П.В. ХлызовApproaches of construction of 3D lithological parameter are considered. Criteria to be met by well-constructed model are formulated. A method of constructing a 3D lithological model corresponding to the requirements is developed. Sphere of application of the proposed method is defined
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Методические аспекты трехмерного литолого-фациального геологического моделирования
By Е.А. ЩергинаProposed the basic aspects of three-dimensional facial modeling. The concept of three-dimensional facial model includes a hierarchical sequence of operations that, depending on the features of the model may be supplemented and improved. In addition to better and more reliable reserve estimates, three-dimensional model will reasonably expect the most rational and cost-effective options for the development of productive strata
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Геологическая проводка скважин. Обновление секторных геологических моделей
Authors В.Н. Довгополый, M. Popescu and Ingham S.Schlumberger company has a huge experience worldwide in geosteering of horizontal wells. We evaluate our approach from model-compare-update to distance-to-boundary. But now we step forward into 3D geosteering. We understand that always are dealing with 3D objects – points, multiply points, dip determinations and ribbon surfaces. In a presentation we discover our complex 3D approach and show 3D sector model update in real time mode
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