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- Volume 28, Issue 11, 2010
First Break - Volume 28, Issue 11, 2010
Volume 28, Issue 11, 2010
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The whys and wherefores of the SPI−PSY method for calculating the world hydrocarbon yet-to-find figures
Authors J.-J. Biteau, J.-C. Heidmann, G.C. de Janvry and B. ChevallierJean-Jacques Biteau, Jean-Claude Heidmann, Ghislain Choppin de Janvry and Bertrand Chevallier describe a system developed in Total to calculate remaining world reserves in the yet-to-find category.
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Correlating Permo-Carboniferous sandstones with biogenic silica microfossils: a new biostratigraphic tool for the E&P industry
J.F.L. Garming, H. Cremer, R.M.C.H. Verreusse, E. Guasti, R.P.J. Kirchholtes, T.B. van Hoof, T.H. Donders and O.A. Abbink present a new correlation tool, based on biogenic silica particles, that will aid in solving key stratigraphic questions in so-called ‘barren’ sediments. The tool is applied in the Permo-Carboniferous sandstones of the Southern North Sea Basin.
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Aruba: A re-evaluation of petroleum prospectivity following the recent discoveries in the Gulf of Venezuela
By A. HoldenFollowing the only offshore wells drilled back-to-back in 1989/1990, whose primary targets turned out to be non-reservoir, Alan Holden makes the case for a fresh look at an area that has seen no active exploration since 1990.
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Full crustal seismic imaging in northeast Greenland
Authors J.W. Granath, R.C. Whittaker, V. Singh, D.E. Bird and M.G. DinkelmanJames W. Granath, Richard C. Whittaker, Vijay Singh, Dale E. Bird and Menno G. Dinkelman describe new techniques used to acquire a 2D seismic acquisition programme northeast of Greenland, the results of which could lead to more optimistic assessments of the hydrocarbon potential of the area.
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Salt geology and hydrocarbon plays in the northeastern Gulf of Mexico
By A. ChowdhuryAbu Chowdhury, TGS, Houston, describes the Crimson Tide depth migrated survey project initiated to provide a better understanding of salt tectonics and the associated accumulation of hydrocarbons in the northeastern Gulf of Mexico.
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Modern analogues to heterogeneous Miocene carbonate reservoirs of the South China Sea
Authors B.J. Pierson, A. Chalabi and A.A. Asha’ariBernard J. Pierson, Aicha Chalabi and Ani Aiza Asha’ari argue that present day analogues may provide useful tools to represent and even quantify reservoir heterogeneity. Studies of recent carbonate platforms in the Celebes Sea, east of Sabah, illustrate both the complexity of lateral facies distribution on individual platforms and the variability from one platform to another.
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Potential field migration for rapid 3D imaging of entire gravity gradiometry surveys
Authors M.S. Zhdanov, X. Liu and G. WilsonThe geological interpretation of gravity gradiometry data is challenging. With the exception of the vertical gradient, maps of the different gravity gradients are often complicated and cannot be directly correlated with geological structure. 3D inversion has been the only practical tool for the quantitative interpretation of gravity gradiometry data. However, it is a complicated and time-consuming procedure that is very dependent on the initial model and constraints used. To overcome these difficulties for the initial stages of an interpretation workflow, we introduce the concept of potential field migration and demonstrate its application for rapid 3D imaging of entire gravity gradiometry surveys. This method is based on the direct integral transformation of the observed gravity gradients into a subsurface density distribution that can be used for interpretation, or as an initial model for subsequent 3D regularized inversion. We present a case study for the interpretation of gravity gradiometry data acquired in the Nordkapp Basin. We find agreement between the results obtained from potential field migration and those obtained from 3D regularized inversion, and show that the migration result are comparable to smooth inversion. For regional-size datasets, runtimes for migration are in the order of minutes compared to hours for inversion.
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3D OBC seismic survey parameters optimization offshore Abu Dhabi
Authors T. Ishiyama, D. Painter and K. BelaidThe flexibility of 3D ocean bottom cable (OBC) seismic survey design allows a variety of survey parameters and geometries to be chosen. From the infinite number of possible variations, we seek to optimize the trade-off between higher data quality and lower survey effort. To understand the relationship between data quality and survey effort, we acquired a pilot 3D OBC seismic survey with very high specifications, simulated several datasets by decimating the full data or reducing the survey effort, and then evaluated the quality of each dataset against the survey effort. We show that: (a) data quality is related to trace and offset vector tile (OVT) densities; (b) data quality is an asymptotic function of survey effort in general, eventually reaching a plateau with increasing survey effort; (c) a gradient of the fit curve at a certain survey effort can represent the quality efficiency, dQ/dE, where Q is data quality, and E is survey effort; and (d) the quality curve for a survey can be estimated using existing datasets in a field with the proposed equation for Q and dQ/dE.
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Volumes & issues
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Volume 42 (2024)
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Volume 41 (2023)
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Volume 40 (2022)
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Volume 39 (2021)
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Volume 38 (2020)
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Volume 37 (2019)
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Volume 36 (2018)
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Volume 35 (2017)
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Volume 34 (2016)
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Volume 33 (2015)
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Volume 32 (2014)
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Volume 31 (2013)
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Volume 30 (2012)
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Volume 29 (2011)
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Volume 28 (2010)
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Volume 27 (2009)
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Volume 26 (2008)
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Volume 25 (2007)
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Volume 24 (2006)
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Volume 23 (2005)
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Volume 22 (2004)
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Volume 21 (2003)
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Volume 20 (2002)
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Volume 19 (2001)
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Volume 18 (2000)
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Volume 17 (1999)
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Volume 16 (1998)
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Volume 15 (1997)
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Volume 14 (1996)
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Volume 13 (1995)
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Volume 12 (1994)
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Volume 11 (1993)
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Volume 10 (1992)
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Volume 9 (1991)
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Volume 8 (1990)
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Volume 7 (1989)
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Volume 6 (1988)
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Volume 5 (1987)
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Volume 4 (1986)
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Volume 3 (1985)
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Volume 2 (1984)
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Volume 1 (1983)