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PGCE 2012
- Conference date: 23 Apr 2012 - 24 Apr 2012
- Location: Kuala Lumpur, Malaysia
- Published: 23 April 2012
41 - 60 of 96 results
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Hydrocarbon Source Rock Characteristics of The Gondwana Coals from Barapukuria Basin, Bangladesh
Authors M. Farhaduzzaman and University of MalayaBarapukuria coal deposit, one of the five important coal basins of Bangladesh (Figure 1), was discovered at Dinajpur district in 1985 by Geological Survey of Bangladesh (GSB). On the basis of borehole information and seismic survey, the study reveals that the stratigraphy of Barapukuria basin includes four different formations namely Basement Complex, Gondwana Group, Dupi Tila Formation and Barind Clay (Madhupur Clay) Formation and corresponding ages of the formations are Archaean, Permian, Tertiary and Quaternary respectively (Wardell Armstrong, 1991; Islam & Islam, 2005, Islam & Hossain, 2006; Islam & Kamruzzaman, 2006; Farhaduzzman et al., 2011).
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Source Potential and Hydrocarbon Maturity Modeling of the Onshore Masila Basin, Eastern Yemen
Authors M. Hakimi, W. H. Abdullah and M. R. ShalabyThe Masila Basin is one of the most hydrocarbon-prolific sedimentary basins in the Republic of Yemen and is located in the Hadramaut region in East Central Yemen (Fig. 1). The hydrocarbons produced from Masila Basin are predominantly oil with minor amounts of natural gas. This basin formed as a rift during the Late Jurassic-Early Cretaceous due to the Gondwana breakup. This paper will present subsidence histories, maturation window, hydrocarbon generation and expulsion analysis.
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Geological Controls on Well Productivity and Reservoir Performance in Select North American Shale Gas Plays
Authors P. A. L. Winder, R. Herbert, G. Schmidt, M. Lawford and B. FarajNorth American shales typically exhibit geological variability on a macro and micro scale that results in marked variability in well performance. In the era of unconventional development, technology is driving well performance, but geology still underpins the potential for commercial development.
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Application of Dual Well Micro-Seismic Monitoring in Hydraulic Fracturing Stimulation in a Tight Oil Reservoir
Authors T. K. Lim, Y. Li and X. G. YangThe tight sand oil reservoir found in the Urdos basin is known for its very low porosity and permeability. Almost every well has been stimulated using hydraulic fracturing techniques. The average production for a vertical well is approximately 4-5 ton per day. Among such a large number of fracture jobs, enhanced production after stimulation does not always meet expectations.
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Applications of 3D Micro-CT Images and 2D BSEM-EDS for Petrophysical Reservoir Characterization
Authors L. Riepe and PETRONAS Carigali Sdn BhdThe paper provides an overview on the application of 3D imaging and Pore Network Modeling (PNM) technology to establish a direct relationship between rock micro-structure parameters from 3D via micro-tomographic images, and the simulation of petrophysical properties of reservoir rocks.
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Integrated Interpretation of an Iron-Rich Sediment, Jansz-Io Field, Northwest Shelf, Australia
Authors G. R. Heavysege and A. MillsThis study is focussed on the investigation of clastic reservoirs in the Malay, Sarawak and Sabah Basins, which are mainly shaly and silty sandstone zones, that were not obvious and not classified as “net pay” from previous conventional formation evaluation techniques.
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An Integrated Petrophysical Analysis of Low Resistivity Low Contrast (LRLC) Pays in Clastic Reservoirs in Se Asia
Authors L. Riepe, M. N. Zain and N. S. ZainudinJansz-Io Field is part of the Greater Gorgon Liquefied Natural Gas (LNG) Project on the Northwest Shelf of Australia. The reservoir consists of sub-tidal marine sandstones that will be developed in a present day deep water setting. The majority of the reservoir is highly bioturbated shaly sandstones with significant amounts of Potassium Feldspar and Glauconite. The reservoir is capped with a medium to coarse grained sandstone with abundant iron-rich ooid grains and iron-rich cements including siderite, hematite, limonite, and an amorphous green clay mineral identified as Berthierene, a form of Chamosite.
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Lithology Discrimination Through Elastic Inversion
Authors D. Ghosh and Universiti Teknologi PETRONASSince the advemt of Bright spot DHI bright spot technology in the early 80's, prospect evelauation and reservoir development using amplitudes, or some form of this attribute, is an accepted norm in the oil en gas , and PETRONAS is nog excepition.
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Estimating Porosity from Determinsitic Inversion
Authors M. Sams Sdn Bhd, T. J. Focht and J. TingIn quantitative reservoir characterisation we try to extract absolute information about reservoir rocks from the seismic data. One method is to invert the seismic data to elastic rock properties and then interpret these rock properties in terms of reservoir properties. There are a number of problems that hamper this process.
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The Evolving Role of Geophysics in Exploration. From Amplitudes to Geomechanics
Authors E. C. Andersen and D. GrayThe purpose of this paper is to review a few of the major milestones of geophysical innovations, as we see them. The aim is to provide insight into how geophysics has evolved and provide a glimpse into the direction of the technology and its application to improving exploration and production solutions.
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Xu and White Revisited
Authors M. Sams Sdn Bhd, T. J. Focht and N. Azuairi Che SidikIn this paper we show that a single aspect ratio applied to the total porosity of a sand-clay mixture can accurately model both P- and S-sonic data. We also show that the variation of this optimal aspect ratio can be predicted from the petrophysical properties of the rocks, whilst keeping the effective elastic properties of the minerals constant over large geological intervals. The use of one variable aspect ratio applied to the total porosity provides a much better fit to the data than using a single aspect ratio for each mineral.
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Foresee the Unforeseen: Modeling West Baram Delta Overpressure
Authors C. A. Ibrahim, L. Light, J. Mennie and C.K. NguPETRONAS Carigali and Shell Sarawak Berhad commenced a drilling campaign in SK307 in 2011 that constituted the first HPHT wells to be drilled with a 15K capacity rig in the West Baram Delta. Understanding regional overpressure behaviour will allow more accurate modelling of the pore pressure behaviour for future HPHT exploration opportunities and robust well planning.
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Systematic Evaluation of Play and Prospect Risk Using a New Play-Based Exploration Methodology
More LessPlay-based exploration offers a methodology to evaluate the various elements of petroleum systems in a regional context and then incorporate this knowledge into geologically based and objective evaluations of specific objects.
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Systematic Application & Play-based Exploration Methodology Using ArcGIS in Sabah Exploration Block SB309 & SB310
More LessThe present study aims to improve the understanding of the basin through application of a systematic analysis of all the petroleum risks in the play fairway mapping.
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Deepwater Reservoir Geometry and Characterisation: Analogue from the Semantan and West Crocker Formations
Authors H. H. Ismail, M. Madon, Z.A. Abu Bakar and M.S. LemanThis paper is aimed to highlight the deepwater sedimentary successions as potential analogue for deepwater reservoir geometry and characterisation. The understanding of sandbody geometry, heterogeneity and characterisation of deepwater reservoirs is important for better prediction of gas/chemical movement for EOR purposes especially in the Sabah Basin.
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Well Log Application in Source Rock Evaluation: Using Committee Machine with Intelligent Systems
Authors M. Verdiyar, F. Kamyabi, A. Nazarpour and M.K. Ghassem AlaskariSource rock evaluation consists of assessing the hydrocarbon generating potential of sediments by looking at the sediment's capacity for hydrocarbon generation, type of organic matter present and what hydrocarbons might be generated, and the sediment's thermal maturity and how it has influenced generation. From this, it is possible to begin answering questions about if, how much, what kind, and when hydrocarbon generation has occurred.
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Geochemical Evaluation of Oil Reservoirs in the World's Largest Gas Field from Persian Gulf, Iran
Authors P. Hassanzadeh, M. Khaleghi, A. Ahanjan, M. Kobraei and R. Bagheri TirtashiIn this article hydrocarbon potential of probable source rock formations for Oils is investigated in the South Pars field which is southern extension of the North field of Qatar Country.
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Common Liptinitic Constituents of Mukalla Coals in The Offshore Qamar Basin, Eastern Yemen: Implication for Hydrocarbon
Authors M. Hakimi and W.H. AbdullahThis presentation will identify and describe the type of common liptinitic constituents of the Mukala coals and their relation to hydrocarbon generation potential.
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Generating a New Approach for Continuous Reservoir Model Updating: Non-Gaussian Priors & Nonlinear Data Functions in EnKF
Authors S. Forghany, A.A. Asgari and T. BehrouzIn this study we present a sequential data assimilation procedure, based on a Bayesian framework, where the model parameters and the state variables are updated continuously in time.
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Diverse Origins of Carbonate Cements Revealed By Carbon and Oxygen Isotopic Analysis
Authors D. M. Ince and PETRONAS Carigali Sdn BhdTwo cores were recovered from Lower Miocene reservoir sections. The reservoirs are of shallow marine facies and show extensive bioturbation with distinctive forms such as Ophiomorpha present.
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