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3rd EAGE International Geoscience Conference Tyumen 2013 - New Geotechnology for the Old Oil Provincies
- Conference date: 25 Mar 2013 - 29 Mar 2013
- Location: Tyumen, Russia
- ISBN: 978-90-73834-44-6
- Published: 25 March 2013
41 - 60 of 105 results
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Laboratory and Field Studies of the Relative Permeability Modifiers
Authors N.A. Cherepanova and A.A. FilippenkoSimulation experiments results are presented for relative permeability modifiers (RPM). The experiments were performed on drill core samples and proppant pack. In addition, we report here the results of RPM application under field conditions for mitigating water cut in the oil fields of West Siberia.
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Analysis of Petrophysics and Reservoir Characteristics and Identification of their Relationships with Sedimentary Facies Environments and Petroleum Potential
Authors K.G. Skachek, I.V. Supolkina and I.A. PanteleikoIntegration of core investigation, log and seismic data allows data on composition and genesis of sedimentary rocks, oil traps to be interpreted and forecasted in an appropriate way.The data obtained make is possible to get fundamentally new information on lithology and depositional environments within study areas and to update the existing lithofacies model. They are of great importance for improving the effectiveness of geological exploration
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Статические и динамические модули, пределы упругости и пределы прочности горных пород
Authors В.А. Вавилин, Т.Р. Галиев, А.А. Кунакасов and Р.В. ПустошкинВ статье представлены результаты экспериментальных исследований механических характеристик породы месторождений нефти и газа. Впервые в России разработана и использована оптимизированная методика исследования статических деформационных характеристик горных пород на установке Автолаб-1500 применительно к породам месторождений ООО ЛУКОЙЛ-Западная Сибирь. Механические характеристики горных пород (статические и динамические упругие модули, коэффициент Пуассона, модуль Юнга, модуль сдвига, сжимаемость, пределы упругости, пределы прочности), определенные в условиях, максимально приближенных к пластовым условиям, - это самая необходимая информация при решении множества задач, связанных с подсчетом запасов, разработкой месторождений, повышением нефтеотдачи. Деформационные прочностные характеристики горных пород, определенные при статических измерениях, являются наиболее достоверными, и отражают реальные свойства как однородной, так и неоднородной анизотропной породы. Измерения (одноосный или триаксиальный тест до разрушения, тест гидростатического обжима) были выполнены в условиях, соответствующих реальным пластовым условиям (горное и пластовое давление, температура). Статические упругие модули (модуль Юнга, коэффициент Пуассона, модуль сдвига, сжимаемость), пределы упругости, пределы прочности породы определены непосредственно по измеренным диаграммам «Деформация-напряжение». Скорость изменения деформации в триаксиальном тесте до разрушения была не более 1,5•10-6 s-1, а частота измерений деформации и механического напряжения каждые 2, 5 и 10 секунд, в зависимости от свойств породы и измеряемого участка диаграммы «Деформация-напряжение». Такие режимы исследований обеспечивают высокую точность и достоверность измерений
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Generalized Petrophysical Models of Reservoir Properties Based on the Concept of Connectedness of the Pore Space
Authors Е.О. Belyakvo, Е.V. Stremichev and D.М. MakuhoThe generalized approach for petrophysical modeling of the basic reservoir properties (FES) of sedimentary rocks was considered. The main feature of Petrophysical models is their versatility for different conditions by replacing the set of influencing factors, that determine the structure of the pore space, to the concept of connectedness of the pore space. This concept is based on the simple fact that filtering parameters are determined not only by the bulk component of the conductive area, but also by geometrical features. In this case, the geometrical features are formalized by large number of parameters. Such the variety of characteristics entails a large number of different and complex patterns that describe the character between the main reservoir properties. This paper proposes a formalization of the laws on the basis of simple expressions that allow you to enter quantitative estimate of linkedness parameter. In the framework of the concept of connectedness of the pore space were obtained petrophysical models, what help to simplify the petrophysical modeling by using a small number of adjustable constants for specific deposits. In this way their universality is manifested for carbonate and terrigenous reservoirs. Structural coefficient was quantitatively formalized.
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Chemostratigraphy Analysis as a Guide for High Resolution Sequence Stratigraphy: Greater Burgan, Kuwait
By B. Al-EneziA detailed chemo-stratigraphic study has been performed for the Albian-Cenomanian Wara-Burgan complex of Greater Burgan Field, Kuwait to establish chemostratigraphic zonations as the foundation for a chemostratigraphic correlation framework. Furthermore, the framework provides an independent constraint on the stratigraphy of the Greater Burgan sequences that can be integrated with information relating to the lithostratigraphy, sedimentology, and biostratigraphy. Chemostratigraphy involves the characterization of sedimentary strata based on variations in their whole rock inorganic geochemistry, resulting in chemostratigraphic zonations being erected for the strata. Chemostratigraphy is particularly effective in siliciclastic successions with little biostratigraphic control, such as stacked sequences of fluvial sandstones. The success of the technique is due to the geochemical provenance signature of siliciclastic rocks, as reflected by the varying abundance of the relatively immobile elements, relatively unaffected by the processes of weathering, transport and diagenesis. The whole stratigraphic interval has been subdivided into 9 zonations defined by nine chemostratigraphic packages. Each package has internally consistent geochemical composition related to changes in detrital mineralogy and provenance. The zonations have been successfully combined to form an interwell chemostratigraphic correlation for the Burgan, Mauddud and Wara Formations. This chemostratigraphic zonation was subsequently used to constrain the sequence stratigraphic framework
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Analysis of the Adequacy of Data Laboratory Researches of Ashalchinskoye Natural Bitumen Deposit’s Core
Authors F.F. Akhmadishina Federal University, R.R. Surmashev and R.F. VafinThis article presents the results of the mathematical analysis of the adequacy and reliability laboratory analysis of core’s material, selected from wells of Ashalchinskoye natural bitumen deposit. In this work were described the basic methods of analysis and graphics applications, showing the results. At the end you can see the main conclusions and find the qualitative and quantitative assessment.
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Reservoir Rocks of Viscous Oil in Ufa Terrigenous Complex (Example of the Ivanovo Deposit)
Authors E.T. Kuklina Federal University, RF Vafin, R. Surmashev and F.F. AkhmadishinaThe present work deals with the study of ultra-viscous oil reservoir located in Ufa terrigenous complex of Bolshe-Kamensky deposit, it gives detailed characteristic of its lithologic and reservoir properties. The authors used methods of mathematical statistics and made maps of reservoir parameters distribution within the deposit. Key words: oil, reservoir, granulometric composition, porosity, permeability, carbonate content, oil saturation
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Коэффициент разрешенности
By А.А. ПьянковОдним из важных критериев сейсмических данных является разрешенность записи, чем выше разрешенность, тем точнее, а главное правильнее мы сможем выделять перспективные объекты. Количественное определение коэффициента разрешенности позволяет сократить время анализа сейсмических данных на всех стадиях обработки сейсмического сигнала, а так же несколько унифицировать критерии качества результатов расчета. Кроме того, используя атрибут коэффициента разрешенности и сравнивая с сейсмическими разрезами, можно выделять зоны с пониженными и повышенными значениями разрешенности на разрезе и, в дальнейшем, полученную информацию использовать на стадии интерпретации как дополнительный критерий оценки перспективных зон.
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Pulse Neutron Spectrometry Logging and Planning of Geologic and Technical Operations
Authors F.N. Enikeeva, B.K. Zhuravlev, T.V. Zhuravlev and K.V. ChernoletskyThe effectiveness of the development and operation of oil and gas fields substantially depends on optimum planning and results of geologic and technical operations (GTO) to keep on or rise the level of hydrocarbon production, especially at the latest stages. The operations and their analysis are systematically linked with the current deposit simulation, hydrocarbon reserves increase including that by discovery of missed production beds. The optimization and planning of geologic and technical operations is based on logs including nuclear ones. The logs allow the evaluation of the degree of depletion of reservoirs, current locations of interfluid contacts, perforation intervals, revealing intervals for bottomhole zone treatment and choosing chemicals for injection. The nuclear log set includes pulse neutron gamma-ray spectrometry logging, gamma-ray spectrometry logging and pulse neutron logging. The nuclear logging evaluates quantitatively different basic parameters. The evaluated basic parameters give a “current geological image” of each single target under development and the above assist making the most optimum decisions in planning of GTO. To give high-quality results, the nuclear log set should meet up-to-date tool, technology and procedure requirements. They include the optimum choice of nuclear log modifications and downhole measurement modes, effective tool performability check and monitoring etc
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Application of High Definition Frequency Decomposition Techniques on Western Siberia Reservoirs
Authors P. Morozov, G. Paton, A.M. Milushkin, V.V. Kiselev and D.N. MyasoedovWe present a new interactive technique for frequency decomposition which provides high resolution frequency information with improved localisation in the time domain, identifying geological features up to the limit of seismic resolution. This removes the effect of vertical smearing and enables complex geological features like channels and fan systems to be resolved, with maximum confidence that stratigraphic boundaries are being placed in their correct positions. This technique has been applied to data from Western Siberian provinces and was compared with filter based techniques when used to delineate channels, fans and various thin events.. This study details the differences in the results achieved with the new technique when compared with those achieved with other methods of decomposition. It was found that applying high definition frequency decomposition provided significantly more insight and confidence when interpreting the results.
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Surveying of Electromagnetic Parameters of a Medium for Delineation of Oil Deposit
Authors A. Zlobinskiy, B. Balashov and V. MogilatovWe discuss the experience of an integrated application of electrical prospecting such as soundings by counter lines, vertical electric currents soundings, and classical transient in time domain electromagnetic soundings for the examination of seismic uplift. The complex allows using a variety of electromagnetic parameters of a medium for detection of oil deposits. An additional advantage of integrated work is optimization of resources through the use of common elements of receiver-generator arrays and equipment in various modes of electrical prospecting.
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The Analysis of Design Procedures of Permeability on an Example of Layers BS10-11 Drujnoye Fields
Authors G.A. Smolyakov, N.Y. Moskalenko and N.V. GilmanovaAt a choice of a technique of determination of permeability on layers BS10-11 of a field Drujnoye in practice five ways were considered. The analysis of comparisons Kpr = α (PS) showed that data of a method of potentials of own polarization without a kompleksirovaniye with other GIS methods don't meet the requirements shown to determination of permeability. Use of the equations Kpr=f (Kpef) allowed to approximate dependences with big factor of correlation. However, the cumulative error in an assessment of permeability remained at level of one order and led to permeability understating on values to 200 mD whereas the maximum permeability on a core made 1100 mD. Three-dimensional comparison Kpr (Кp) - the code Kgl wasn't applied, since the factor of volume shaliness according to a core has almost identical value of 4-5 % for area of sandstones and aleurolites. Determination of permeability with use of structural factor of S received on the basis of the analysis of capillary curves, had the additional error of definitions connected with uncertainty of provision of a mirror at its finest from 5 to 15м. Comparison use Kpr (Кp) - FZI code (hydraulic units of a stream) appeared the most optimum. FZI are received from the equation of Kozeni-Karmana (taking into account parameter of a form, tortuosity and a specific surface). Adaptation of hydraulic units is carried out with data gamma ray since the mentioned method not only depends on shaliness, but also is defined by polimiktovy composition of rocks, and, therefore, and proceeding secondary processes. At permeability calculation taking into account FZI the error of definitions made 1/3 orders. This method is assumed as a basis at 3D-modeling of layers BS10-11 of the Drujnoye field
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Western Siberia: Main Directions of Geological Exploration and Development Prospects in the XXI Century
Authors V.A. Baldin, R.Y. Adiev and N.Z. MunasypovAt present when traditional objects and complexes’ resource potential is significantly exhausted, there arises a necessity to explore new large areas of oil and gas accumulation in frontier regions and in new stratigraphic datums. For Western Siberia main development prospects in the XXI century are associated with the following geological exploration directions: state-of-the-art exploration in the earlier discovered deposits enabling to increase significantly explored HC reserves and transfer most of the suspended fields in the cost-effective category; deep well exploration of pre-Jurassic platform (mainly the contact of pre-Jurassic platform rocks and Jurassic sediments of the mantle) and framing structures of Western-Siberian Mesozoic basin: the system of the Riphean lower Paleozoic megalithic banks in the North-West of the Siberian platform – Igarka-Norilsk oil and gas province, a new oil-and-gas-promising sedimentary basin of piedmont (foreland) type - South-Taymir oil and gas province in the Gorniy Taymir; shale oil problems study: scientific-thematic summarizing exploration works for the whole oil and gas accumulation basin on the basis of complex study of seismic exploration, GIS, core and down hole tests, results of exploration in certain directions; geological exploration and development of new frontier regions of Western Siberia along Jurassic-Cretaceous oil and gas sediments (Ust-Yenisey oil and gas bearing area). Main directions of geological exploration and development prospects of Western-Siberian oil and gas production complex in the XXI century are associated with Northern territories: Gydan and Taymir.
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Sand Reservoirs Characterization Using Multiwave Seismic in West Siberia
More LessCurrently, there is new cycle of interest in the multi-wave seismic (MWS). Relatively low presence of MWS method in Russia due to several limiting factors, such as high cost, lower productivity, relatively low staff experience, poor software. However, international experience shows that in some cases seismic data accuracy and reliability can be improved by MWS. Experiment 3D-3C survey was made on one of the LUKOIL license areas in Western Siberia. Sand reservoirs in the BV7 and UV11 formations were main investigation objects. The efficiency of synchronous PP-PS AVA inversion and applicability of kinematic and dynamic attributes of PS waves for these reservoirs characterization were evaluated during the interpretation. Possibility of density evaluation of the reservoirs based on PP-PS AVA inversion was shown. The efficiency of the kinematic attribute Vp/Vs for the reservoir characterization and saturation prediction was provided. Based on these results was made a conclusion about the effectiveness of MWS for the sand reservoirs BV7 and UV11 characterization. Recommendations for 3D-3C survey adaptations in the region were made.
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Remaining Recoverable Reserves Localization for Clinoform Objects at the Late Stage of Field Development
Authors O.E. Kurmanov, N.G. Glavnov, P. S. Balenko and A.S. BochkovRemaining recoverable reserves localization for clinoform objects at the late stage of field development.
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The Growth of Geological Information Content of 3D Seismic by Merging Different Shootings in a Single Array: for Example Tevlinsko-Russkinskoe Field
Authors E.V. Chernyaev, I.N. Kerusov, K.G. Skahek, L.A. Popova and I.V. KazoraThe growth of geological information content of 3D seismic by merging different shootings in a single array: for example Tevlinsko-Russkinskoe field.
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Rock Physics for Quantitative Seismic Analysis in the Orenburg Region
Authors V. Matusevich, A. Bovykin, E. Malysheva and S. KlarnerThe increased amount of projects with quantitative seismic interpretation over the last years made clear, that there is an urgent need to acquire high quality well data for p- and s-wave velocities as well as density. These data are required to tie the seismic response quantitatively to physically effective changes in the reservoir properties. Within the frames of a pilot project, we started to record high end well log data in a number of wells in the Orenburg region to prove the potential and the value of this type of information. First results of the evaluation of the data are presented in the recent paper. For a high quality of quantitative seismic interpretation, in addition to the p-wave velocity, the shear wave and the Stoneley proved to be extremely informative, especially for lithology estimation, porosity prediction and the definition of permeable reservoir intervals. To make use of the full potential of seismic inversion techniques, the complex of modern logging curves has to be acquired at least in a number of key wells for exploration and production, in order to provide a reliable calibration data base to extract meaningful attributes out of the seismic data.
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Laboratory Researches of Polymer Flopaam 5205 VHM of the Firm SNF for the Polymer with Water Filling with the Help of Kern
More LessOne of the directions in the field of using new methods of increasing oil extraction is water filling of Polymer. In order of increasing oil extraction and increasing coefficient of oil ejection in the department of «LUKOIL-Engineering» «PermNIPIneft» in the city of Perm laboratory researches of Polymer Flopaam 5205 VHM are made by chemical company SNF of modeling Polymer water filling with the help of kern. For the conduction of research on kern in accordance with API R63 «Recommended methods of finding out of Polymers used in the process of second time of oil extraction» and «Project offers of SNF on test Polymer water filling», a program is worked out of laboratory researches on kern Polymer Flopaam 5205 VHM. As result of these made laboratory researches a possibility of practical usage of Polymer Flopaam 5205 VHM with concentration C1 is made for Polymer water filling in rocks stones deposit’s of investigating object on the field of oil permeability from 280 mD and higher, where in accordance to laboratory kern researches a positive effect is reached – a growth of coefficient of oil ejection with less littering porous area of collector
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Using the NMR Relaxometer in Laboratory Petrophysical Analysis
Authors V.A. Vavilin, T.R. Galiev, E.V. Sorokina and A.A. KunakasovIn our laboratory the NMR method has been used for analysis of core samples. Inaccuracy of results has been estimated. All results have been compared with traditional methods of analysis. Pore space structure changes during different technical influence to rock, also when the drilling fluid flows through core, we used NMR relaxometer for determination and control of these changes and occurring fluid redistribution. In this paper we consider how the pore structure changing after different types of influence to core (centrifugation, uniform overall compression, filtration through core). Also the NMR method has been used for analysis non-homogeneous core samples with complex lithology (waste mantle rocks - consist of very different inhomogeneous inclusion). Traditional methods do not give good results; they can’t determinate and separate small and large pore, fracture porosity and water of clay consisting of one rock. As opposed to traditional methods, NMR allow us determine all water in sample, in each its positions and conditions. We offer standardize and use the NMR method in the laboratory (analysis cylindrical and anomalous form cores, non-consolidated cores) and in drilling site for analysis drilling cuttings because this is: profitably, accurately, more informatively, operatively.
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Оценка объемного содержания и типа глинистых минералов с использованием ЯМР-релаксометрии
Authors М.Й. Шумскайте and Ю.К. ДоломанскийВ данной работе рассматривается вопрос о влиянии объемного содержания и типа на фильтрационно-емкостные свойства пород-коллекторов. Показано, что с использованием метода ЯМР-релаксометрии можно оценивать количественное содержание глины по изменению времен поперечной релаксации: с увеличением доли глинистых включений времена релаксации уменьшаются. При этом увеличение доли каолинита приводит к резкому уменьшению времен релаксации, изменение доли хлорита незначительно влияет на изменение времен релаксации. На основании ЯМР-исследований получено граничное время релаксации, равное 10 мс, разделяющее каолинитовую составляющую глинистой фракции от хлоритовой. Таким образом, можно заключить, что метод ЯМР-релаксометрии можно выделить, как независимый источник информации о типе глинистых минералов. Все результаты можно получить в интерактивном режиме с минимальными временными затратами. Данный метод может быть использован для повышения достоверности комплексной интерпретации данных геофизических исследований скважин и результатов ЯМР-исследований
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