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GEO 2012
- Conference date: 04 Mar 2012 - 07 Mar 2012
- Location: Manama, Bahrain
- Published: 04 March 2012
41 - 60 of 345 results
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Future-Seismic. How Tomorrow’s Geophysicists Can Be Restricted by Today’s Hardware
Authors Robert G. Heath and John GilesThe field of geophysics has never been more dynamic. New ideas are emerging more regularly than ever before in such areas as simultaneous source acquisition, ultra-large channel counts and passive/permanent monitoring.
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Petrophysical Evaluation of Low Resistivity Pay Zones in Clastic and Carbonate Reservoirs
Authors Yousef M. Al-Shobaili and Murat ZeybekA petrophysical integration methodology has been developed to evaluate low resistivity pay zones in both thin carbonates and laminated sand-shale sequences. This technique utilizes information from porosity and resistivity logs with additional data from formation pressure and downhole fluid sampling analysis.
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Improving Lithology Characterization in a Multi-Mineral Environment
Authors Izu Ariwodo and Pablo SaldungarayReservoir productivity is often influenced by the various lithologies present in the drilled wells. This is because lithology plays a major part in determining the rocks physical and chemical properties such as permeability, porosity, capillarity, rock strength, reactivity, precipitation, etc. A good knowledge of the reservoir rock lithology is vital in defining an efficient, effective and economic development strategy for the reservoir.
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Microbial Dolomite of the Coastal Sabkha of Abu Dhabi as a Modern Analogue of the Triassic Dolomite Reservoirs of the Northern Parts of the Arabian Plate
More LessMicrobial dolomites have been fully documented in lagoonal and sabkha sediments from different parts of the world. Detailed textural characterization, using SEM coupled with Energy Dispersive X-ray (EDX), of three deep cores (down to six meters) and fifty surface samples from the intertidal and supratidal zones of the coastal sabkha of Abu Dhabi indicate that dolomite constitutes up to 50% of the bulk sediments.
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Petrophysical Modeling for Evaluating Moldic Porosity in Carbonate Reservoirs
Authors Marvin Rourke, Wael Soleiman, Jerome Truax and John QuireinPredicting reservoir quality and productivity from petrophysical log measurements in carbonates is a well known challenge. Heterogeneous carbonate pore systems often defy petrophysical correlations such as porosity-perm which are routinely used in silici-clastic environments.
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Theory and Approach for Mapping Hydrodynamic Traps and a Middle East Example
Authors Yunlai Yang and Khalid A. MahmoudProvided hydraulic heads in the ground water surrounding a hydrocarbon accumulation are the same, the only force acting on the hydrocarbon body is buoyancy, which is vertical. This force results in the horizontal contact between oil and water. If hydraulic heads are different, the hydrocarbon body is also subjected to a lateral hydraulic force.
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Reservoir Sweet Spots in the Arabian Petroleum Basin; Types and Controls
More LessReservoir sweet spots are areas with better permeability relative to their surroundings. They represent a major challenge in exploration and development. This abstract describes the types of reservoir sweet spots in the Arabian basin and the most common factors controlling their development. Three types of reservoir sweet spots are identified in the Arabian basin; tectonic, sedimentologic and diagenetic.
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Complex Successions of Rock Categories in Clastic Reservoirs: Extreme Geological Heterogeneity
More LessModeling complex spatial patterns of rock-bodies in the subsurface is critical to achieve realistic evaluations of hydrocarbon production scenarios in flow simulation models. Three or more spatial locations of the same rock type might belong to a single curvilinear rock-body in the subsurface (e.g., meandering or braided channels with highly permeable sandstones).
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Meeting Exploration Challenges with High Performance Computing Applications
More LessSuccessful and safe hydrocarbon drilling operations require creation of a detailed and accurate estimate of the earth’s physical properties before the well location is planned. Creating such a reservoir model typically involves the interpretation of seismic data to predict macro- and micro-scale rock properties and to guide the interpolation of reservoir properties between existing well locations.
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Reservoir Rock Characteristics of Biyadh Formation in the East Shabowah Oilfields, Western Central Masila Basin, Yemen
Authors Mohammed H. Hakimi, Mohamed R. Shalaby and Wan H. AbdullahBiyadh Formation, the late Early Cretaceous in age, is a clastic rock containing substantial amounts of proven oil and located in the western central Masila Basin. The lithofacies of this formation reflects braided river channels, shoreface and shallow-marine settings.
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Oil-Generating Potential of Tertiary Coals and Rich-Organic Matter Sediments of the Nyalau Formation in Sarawak, Malaysia
Authors Mohammed H. Hakimi, Wan H.Abdullah and Mohamed R. ShalabyOrganic matter content, type and maturity as well as some petrographic characteristics of the Tertiary coals and richorganic matter sediments of the Nyalau Formation exposed in the Sarawak were evaluated, and their depositional environment was interpreted. Geochemical (Rock-Eval pyrolysis, extract analysis and biomarker distributions) and petrological are the main methods used in this study.
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Regional Distribution of Hydraulic Properties of the Palaeozoic Wajid Sandstone Group Southwestern Saudi Arabia
More LessIn the frame of aquifer studies in Saudi Arabia, we measured porosity and permeability of sandstones of the Palaeozoic Wajid Sandstone in order to get a data base for a regional groundwater model. The Wajid sandstone is subdivided into five formations, which differ in their dominant depositional environment.
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Surface Related Multiple Elimination Using High Performance Computing
Authors Raed A. Al-Shaikh, Sami Abulleif and Yi LuoProper elimination of surface related multiples is an important -and often necessary step - in processing marine seismic data.
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Seismic Modeling with One-Way Wave Equation
Authors Jianwu Jiao, Saleh M. Saleh and Eric VerschuurForward modeling is an important step in seismic data processing and velocity model building. Modeling techniques can be divided into two major categories: ray-based methods and wave equation methods. Ray-based methods such as Kirchhoff modeling are computationally more efficient than wave equation methods. Ray-based methods usually produce inaccurate models when the subsurface geology is complex.
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Using AHP and PROMETHEE Methods for Qualified Hydrocarbon Horizons Prioritization in One of Iranian Hydrocarbon Reservoir
Authors Behzad Mehrgini, Seyyed Ali Torabi and Hossein MemarianHydrocarbon Reservoir characterization and identification of high producible horizons, are main factors in reservoir management.
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Heterogeneous Gravity Data Combination for Geophysical Exploration Research — The Applications of the GOCE Satellite Data for Basin and Petroleum System Analysis in the Arabian Peninsula
Authors Rader Abdul Fattah, Sjef Meekes, Johannes Boumans, Michael Schmidt and Jorg EbbingThe GOCE satellite gravity mission was launched in 2009 to measures the gravity gradient with high accuracy and spatial resolution. GOCE data may improve the understanding and modeling of the Earth’s interior and its dynamic processes, contributing to gain new insights into the geodynamics and composition of the crust and the lithosphere.
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Khuff Reservoir in North Oman: A High Resolution Sequence Stratigraphic Approach
The Khuff Fm is one of the reservoirs with the highest economic significance in the Middle East region. It comprises mixed carbonate/evaporitic sequences of Late Permian-Early Triassic age deposited on a large and flat epeiric carbonate ramp. In North Oman the Khuff houses important hydrocarbon accumulation, and features a field-scale layer-cake geometry characterized by relatively thin reservoir geobodies, with internal property contrast.
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Determining Grain-Size Volumetric’s from Image Logs: A Method of Quantifying Reservoir Quality Variations
Authors Manfred Frass and Isabel C. ArbelaezIn sand-shale sequences, more sedimentological details could be measured and quantified with an image log, however, vertical resolution has historically been a major limitation in obtaining the data yielded from core analysis or cuttings. As defaults, sedimentological features like cross bedding, lateral accretion and erosion surfaces, and other elements could be identified to define depositional environments for various intervals along the image log. Porosity variations and permeability require additional data be acquired, such as nuclear magnetic resonance or triple-combo logs, but vertical resolution in these logs is limited.
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Resetting the Geological Framework of the Al Baraka Field, Komombo Concession, Upper Egypt
Authors Barry Wood, Ahmed Zakariya and Ahmed Abdel HadySouthern Egypt has attracted only sporadic interest since the 1990’s with success finally arriving in 2007 with the drilling of Al Baraka-1 by Dana Gas and the discovery of the Al Baraka Field. However, without a solid database, the geology of this remote basin of Egypt remained little known.
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Pilot Performance Screening and Design Using a Mechanistic Model
Authors Tawfic A. Obeida, Nidhal Al Alawi and Hani Al ShanPilot objectives usually predetermined before pilot field implementations. To study different pilot performance predictions, dynamic reservoir simulation is used as screening tool for pilot performance cases to meet pilot objectives. A Mechanistic model "box model" which is a limited size simulation model is used to compare different pilot configuration performances on equal bases and save CPUs and simulation time.
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