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EAGE International Conference on Petroleum Geology and Hydrocarbon Potential of Caspian and Black Sea Regions
- Conference date: 06 Oct 2008 - 08 Oct 2008
- Location: Baku, Azerbaijan
- ISBN: 978-90-73781-58-0
- Published: 06 October 2008
41 - 60 of 75 results
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About the Specification of Hydrocarbon Reserves Design conditions
Authors R.R. Jafarov, S.M. Huseynova and S.M. HuseynovaRecommendations on improvement of collectors and non-collectors borders determination method on estimation peans will certainly help to increase the safety while definition of oil-gas bearing area and pay layers efficient thickness.
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Fluid Variations and Their Controls Along the ACG Complex - Impacts on Development and Production
The fluids along the supergiant ACG complex show significant variations which can be attributed to the effects of intra reservoir processes. In particular evidence of biodegration has been observed within the shallower reservoirs of the Balakhany. This has been measured in elevated Pristane to Phytane ratios, declined wax content and elevated total acid number. Some of the Pererviv and deeper reservoirs appear to have also suffered from biodegradation but have been subsequently charged to mask the effect. The deepest reservoirs are unaffected by biodegradation and have high wax contents and low acid values. Understanding the variations in wax and acid number is critical for the effective production and transportation of these fluids. BP have embarked in an extensive geochemical study in order to monitor the physical changes in the fluid across the structures, and the processes responsible for these changes. This study has been targeted to maximize production and effective transportation of the fluid across the BTC pipeline.
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Temperature Condition of the South Caspian Basin Fields and Its Variations
The definition of temperature condition in dynamic because oil mobility is formed as affected viscosity changes during development. In order to illustration of how to big the anthropogenic temperature changes of South Caspian Basin fields (SCB) it were detailed analyzed the 46 SCB fields. It was defined that temperature changes by field and with depth is displayed very difficult. It is considerably difference not only for regional but for special structures: even for same section fixed temperatures are local fluctuations without any rules. It was constructed maps of temperature changes for SCB fields for each section. For different structures is different kind of temperature changes: for ones – smoothly and monotone, for other ones is very rapidly. It was defined that there is no dependence between reserves density and its geothermal features for SCB fields. Presented analyses were shown that cold water injection affected to field temperature with different way. So, is for high thermal conditions fields this kind of injection is not quite affected to field temperature conditions. There is a good reason to think that decreasing of reservoir temperature could be seriously complicate the development process even using enhanced oil recovery methods on the field.
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Beyond the Pereriv - Integrated Reservoir Characterisation of Balakhany Reservoirs in the ACG Field, South Caspian Basin
Oil production from the Azeri-Chirag-Gunashli (ACG) Field will reach 1 million bopd upon completion of ACG Phase 3, with the majority of production coming from the high net-to-gross Pereriv B and D reservoirs. Significant hydrocarbon resources remain in the lower net-to-gross and stratigraphically more complex Balakhany Reservoirs which overlie the Pereriv. Developing these resources requires a much more detailed understanding of the reservoir geology than has previously existed. An integrated approach to reservoir characterisation has led to new high resolution stratigraphic models being developed and used as the basis for 3D geological modelling and subsequent reservoir simulation modelling.
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Some Issues of Additional Exploration and Development of Oil and Gas-condensate Reservoirs at Guneshli Field
Authors R. Jafarov, A. Narimanov, A. Kasimov, R. Jafarov and A. NarimanovStratigraphic interval from Middle Pliocene to Quaternary, with thickness 4300 m, was drilled and studied in detail. Key oil-bearing horizon Productive Series (PS), with thickness 2800-3000 m was drilled in wells NN 1, 3, 5, 11, 15, 16, 18, 21, 23, 28. In terms of lithology this section is represented by rhythmic alternation of argillaceous and sandy-aleurite rocks. In terms of tectonics, it is brachyanticline (structural) reservoir of sublatitudinal strike, with longitudinal and transverse faults with the amplitude 20-350 m. Commercial oil accumulation was discovered here for the first time on the north-western pericline of the field (1979, well N 4, X horizon). Later, testing of prospecting-exploration wells demonstrated that the reservoir was multilayer: gas-condensate pools (V, VI horizons), oil pools (VIII, IX, X horizons, Pereriv Suite) were identified in the upper division of PS, oil-gas-condensate pools (NKP, PK) in the lower division of PS.
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Dynamic and Statistical Models of the Reserves Estimation
Authors B. Bagirov, A.M. Salmanov, S.A. Nazarova, A.M. Salmanov and S.A. NazarovaDevelopment of oil-gas field reserves is the continuous process including on various exploration and development stages. Thus, each stage is characterized by a various field investigations, so that is defined the method of calculation and is mirrored on reliability of it estimation. The essential mismatch between listed STOIP and actual reserves volumes was revealed in result of comparative analysis of number of exploitation objects during development. So if for some exploitation objects in accordance to official documentation its reserves is completed, but production is continued even, in other cases realization possibilities of some exploitation objects are quite doubtful. Traditional volumetric or other methods of reserves calculation give a point estimated average reserves in the form of one number which does not contain the information about its distribution by whole reservoir volume. Obviously, in such situation it is experienced to estimate reservoir characteristics and geological reserves with application of the new probable-statistical methods and represented not only its absolute volume, but also its probabilistic variations. This is exclusively important for estimation of economical risk of field development. In accordance to above mentioned re-estimation of recoverable reserves is very important issue for long term developed fields.
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Puls Methods of the Bottom-hole Formation Zone Treatment for the Purpose of the Stimulation
Authors A.A. Merkulov, A.F. Gimaev, D.V. Vasilevski, A.F. Gimaev and D.V. VasilevskiPuls methods of the bottom-hole formation zone treatment for the purpose of the stimulation This technology is safe for environment. Combustion-oxidizing compositions don`t ignite and don`t explode at normal conditions. It`s possible to get the wide range of pressure values. Combustion-oxidizing compositions include water, water-soluble oxidant and water-soluble combustible composition.
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Extension of Effective Field Development Period by Means of Repeated Bringing into Development of Underlying Production
Authors T.V. Khismetov, E.M. Vinogradov, A.V. Tarasov, E.M. Vinogradov and A.V. TarasovEfficiency of comprehensive approach to organization and implementation of GTM may be estimated by changing of technological parameters of wells operation. Due to the high technological success of insulation of gas and water flow breaks from overlying beds during transfer to underlying strata (25 well-operations), over 240 thousands tons of oil were produced additionally in Saratov, Orenburg regions and Western Siberia in 2006-2007. Success of insulating works on top intervals of stratum with subsequent transfer to underlying facility depends to a large extent on the following factors: • Insulation intervals and perforation determination accuracy by means of NPM research results; • Selection of squeeze cementing technology; • Selection of backfill composition formula and amount of cement; • Selection of well-killing fluid; • Quality of perforating works.
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Promising Hydrocarbon Prospects in the Paleogene Formations of the Black Sea Northwestern Shelf, Ukraine
Authors I.V. Nedosekova, I.V. Karpenko, G.S. Starchenko, I.V. Karpenko and G.S. StarchenkoBy this day the portfolio of promising anticlines and faulted anticlines upon Paleogene level within the Karkinit sub-basin is practically exhausted. Nowadays, the most promising exploration trend for Paleogene sequence in the central part of the Karkinit sub-basin is swell-like uplifts complicated with structural noses and flexures. These structural forms are characterized by inherited development and control distribution of reservoirs and traps of lithological, stratigraphic, and structural-tectonic type of sealing.
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Atmogeochemical Aspect of Integrated Geological Research in Forecasting of Carbon Resources in Azov-Black Sea Region
Authors P.F. Gozhik, I.D. Bagriy, T.O. Znamenska, N.V. Maslun, S.D. Aks'om, I.D. Bagriy, T.O. Znamenska, N.V. Maslun and S.D. Aks'omDeveloping the ideas of predicting the mineral concentrations by means of unconventional methods, in this paper a set of integrated structural thermo-atmo-geochemical methods is suggested for the search of hydrocarbon deposits and the channels of degassing of mine fields. These integrated methods have been tested at a number of oil and gas deposits and applied for defining the potential zones in problem zones and channels of near-surface degassing of minefields. There was specified the geological section of Paleogene-Neogene sedimentary rocks revealed at Subbotin-403 at the Trans-Black Sea Shelf in the Black Sea. There was also proved the necessity of conducting the complex geological-geophysical research using cost-effective near-surface structural thermo-atmo-geochemical method.
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Fluid Flow and Sealing Properties Associated with an Active Faults – Kura Basin, Azerbaijan
More LessWith the advent of stereoscopic data such as as Landsat and SPOT imagery, these methods have been applied to satellite data and used to successfully obtain quantitative measurements over large areas. On this connection, these methods have assisted considerably in fault analysis considerations and detection hydrocarbon seeps in surface of the Kura basin which are considered main oil and gas bearing region in onshore Azerbaijan. The satellite imagery interpretation drew upon knowledge of structural geology and geomorphology and detected hydrocarbon seeps related to fault and mud volcano geomorphology. The main objectives are to determine the role of faults and mud volcanoes within the geologic structure of the study regions and to guide future oil exploration. Remote sensing to detect hydrocarbon seepage onshore allowed recognition of marginal and sub-marginal low-relief structural prospects and stratigraphic traps that is overlooked by reflection seismic surveys. Remote sensing data and images were integrated in hydrocarbon exploration programs with other exploration data such as seismic surveys, well logs, gravity surveys, and other geologic-geophysical investigations. Analysis of satellite data allowed to determine the geometry of the fault system and around them distributions of hydrocarbon seeps and to predict hydrocarbon potential of the Kura basin.
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Ecological Advantage of Solar Thermal and Wind Energy Application in Crude Oil Treatment Process in Oil Fields
By F. MammadovApplication of solar thermal and wind energy in crude oil treatment process was realized for solution of ecological problems, economizing fossil fuels and decreasing the accessory financial expensesin oil fields.
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Fluid Outflow from the Reservoir through Vents
By V.A. ZotovInvestigation of laws of fluid outflow from the reservoir through vents is a part of applied hydrodynamics studies, which is widely used in oil-field mechanics and ecology. Found dependences allow to control hydrodynamic processes of fluid outflow from the reservoir effectively and to project technologic elements of constructions with given properties.
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Researches in the Field Purification of Oilcontaining Industrial Waste Waters
Authors F. Mamedova, K.F. Mossallam, N. Salimova, F. Sultanova, K.F. Mossallam, N. Salimova and F. SultanovaThe purpose of present researches was study of possibility application of ferments – Vegetable base for purification of industrial waste waters, containing phenols, aromatic compounds mineral admixtures and hydrocarbons of oil fractions. With this purpose, in laboratory conditions the researches by extraction of ferment (protein compound) from vegetation. Have been conducted. As a vegetation it was been declared sensible use of wide spread gourd of horse-radish with following extraction from it of ferment – peroxydaze. Further the dry substance (horse-radish) has been crushed on small parts, has with been diluted by water and has been mixed during 3 hours until getting suspension. Then by centrifuging the ferment-peroxydaze of horse-radish has been separated. Since duration of ferment activity makes no more than 30 days, its activity has been examined by photocalorimeter daily and depending on the dose has been established in conducted researches. Obtained ferment – peroxydaze of horse – radish has been used for removal the aromatic hydrocarbons from aqueous part of oil-slime, selected from Binagadi field. The obtained results testify, that a waste water from oil-slime after biochemical working with remove of aromatic hydrocarbons may be use in technical water supply.
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Power Intensity of Technological Equipment as a Factor of Development Deposits
By R.H. HasanovThe perspectiveness of drilling works on the shelf of Caspian Sea is shown. Possibility of lessening of power intensity of technological equipment is considered. The investigation are carried out and new model for estimation power intensity as index of production effectiveness of drilling works.
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Oil & Gas Production Main Technological Data Forecast
Authors T.Sh. Salavatov, A.A. Suleymanov, E.A. Panakhov, A.A. Suleymanov and E.A. PanakhovDeterministic models are the most widely used ones in modeling oil and gas production processes. However, their use can be limited due to their complexity and loss of integrity. Thus, management of oil fields development processes based on deterministic models is complicated and can lead to mismatched decisions. Use of dynamic models is suggested for representation of oil production processes. The approach has been illustrated and justified on an example of main technological indices of Forties field development. The results reflect that suggested approach represents oil production process accurately and reliably and thus, allows forecast main technological indices of oil production, considering transient processes in oil formation.
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About Method of Estimation of Initial Recoverable Oil Reserves
More LessFor onshore and offshore oil fields of Azerbaijan being at further stages of development the most satisfied results were determined by the method based on practice of determination design factors of some oil a gas deposits further development and determination of residual recoverable oil reserves of number of objects of Absheron peninsula Productive strata and offshore fields operated under depletion drive and water head rejime. Carrying out of these investigations has definite practical meaning for estimation of residual recoverable oil reserves, ORF closer definition and design of new oil deposits development.
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Water Saturation in Shaly Sands Calculations Using Dual Water (DW), Modified Simandoyx (SWMS) and Archie of Alyat – Deni
Authors T.M. Javadzadeh, V.V. Javadzadeh, A.G. Abuzarova, V.V. Javadzadeh and A.G. AbuzarovaCalculation of residual water saturation in VII horizon of Alyat - deniz field is carried out by Dual Water Model and by Archie formula. Similarity of values determined by different methods very well.
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Features of Gas Cap Oil
Analyses of obtained results and comparison of curves shows that expansion of gas cap promotes decrease of formation pressure drop rates. Besides, it has direct influence on residual oil reserves withdrawal and on oil recovery increase in central zone. If there was no breakthrough of free gas into development well in the process of well operation (through interlayer with good permeability), then oil recovery factor could be much more. Expansion of gas cap and breakthrough of free gas into well cause change in definite degree of oil and gas permeability phase, additional resistance occurrence and decrease of oil withdrawal. A large volume of gas cap causes growth of gas factor during development.
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Structural Tectonical Development Characteristics of Low Kura lowland
By M. YusifovIn the structural - tectonical plan formation of Low Kura lowland. It is possible to separate 3 stages. The first is Mezozoy and tectonical - structural plan created by formed soil complex in this stage. In this stage Kuryani lowland passed ocean stage of it is development and from this point is characterized relatively with slightly occurring of sediment accumulation process. But probably, the occurring of accretion in subduction zone available first in Tetis then in the north of Paratetis showed it is affection certainly for the formation of ocean sediment thickness. In the result of accretion the accumulated organic matter in the ocean sediment of this process is possible to say the reason for the accumulation in small site. From structural- tectonical aspect in the first stage the deep folds not and depth breakings were formed sharing and bordering to the blocks of the Kura lowland.
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