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- Volume 28, Issue 6, 2010
First Break - Volume 28, Issue 6, 2010
Volume 28, Issue 6, 2010
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Bigger is better when it comes to capital markets and oil company liquidity
More LessRuud Weijermars explains how the impact of worldwide recession has created an unequal playing field among oil companies seeking project finance.
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Why frequency decomposition is just like colour photography
Geophysical consultant Dick Dalley argues that the seismic interpretation community could learn a lot about frequency decomposition from parallels with colour photography first explored in the nineteenth century.
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Towards the optical seismic era in reservoir monitoring
By M. EriksrudMorten Eriksrud, Optoplan, outlines the advantages of fibre optic technology for life of field seismic monitoring of producing reservoirs compared with electrical-based cable and sensor systems being used in existing operations.
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The future is open for business: open source tools for the geoscientist
By M. HallMatt Hall, ConocoPhillips Canada, provides this primer on open source software and encourages geoscientists to explore further.
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Weighing the role of cableless and cable-based systems in the future of land seismic acquisition
By B. HeathWith the phasing in of cableless systems, Bob Heath, veteran of the land seismic acquisition industry, provides a practical guide to the changing technology and its implications.
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Seismic feasibility tests in the Williston Basin to improve reservoir characterization
Authors G. El-Kaseeh, N. Banik, A. Koesoemadinata, M. Egan and A. SalamaIn this case study George El-Kaseeh, Niranjan Banik, Adam Koesoemadinata, Mark Egan and Antoun Salama, WesternGeco, demonstrate the benefits of a point receiver land acquisition system and dedicated processing to achieve improved resolution in a complex shale reservoir setting.
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Future-proof seismic: high-density full-azimuth
Authors S.R. Seeni, S. Robinson, M. Denis, P. Sauzedde and R. TaylorSalva R. Seeni, Scott Robinson, Michel Denis, Patrick Sauzedde and Roger Taylor detail the extensive preparation and operational challenges involved in the carrying out of an intensive seismic programme in the Dukhan field, Qatar requiring high-density, full-azimuth 3D data coverage plus the simultaneous acquisition of a number of 3D VSPs.
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Mapping shallow geology and gas hydrate with marine CSEM surveys
Authors K. Weitemeyer and S. ConstableKaren Weitemeyer and Steven Constable of the Scripps Institution of Oceanography have developed new marine CSEM technology to map gas hydrates and other geological features in the shallow seafloor section, and show examples from recent surveys in the Gulf of Mexico.
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3D geological model for a gas-saturated reservoir based on simultaneous deterministic partial stack inversion.
Authors I. Yakovlev, Y. Stein, A. Barkov, K. Filippova and S. FedotovI. Yakovlev, Y. Stein and A. Barkov (Gazprom VNIIGAZ) with K. Filippova and S. Fedotov (Fugro-Jason) provide a method for modelling a gas-saturated reservoir when acoustic impedance and simple seismic attributes alone fail to provide the solution.
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Multi-azimuth processing and its applications to wide-azimuth OBC seismic data offshore Abu Dhabi
Authors T. Ishiyama, H. Ikawa, D. Painter and K. BelaidWide-azimuth ocean bottom cable (OBC) seismic data have several advantages for imaging, such as high fold, long offsets, and a wide range of source-receiver azimuths. However, conventional wide-azimuth processing has some drawbacks because the full range of advantages is not exploited. In conventional wide-azimuth processing, azimuthal variations are usually ignored, whereas multi-azimuth processing treats each source-receiver azimuth individually. We performed a pilot multi-azimuth processing trial on wide-azimuth OBC seismic data offshore Abu Dhabi, United Arab Emirates to evaluate its benefits compared to conventional wide-azimuth processing, and discuss its applications for fault imaging and fracture characterization. We show that: (a) multi-azimuth processing achieves significantly higher signal-to-noise ratio, and effectively corrects the distortions in the subsurface image resulting from azimuthal variations; (b) mono-azimuth processing enhances imaging of existing subtle faults; and (c) azimuthal variations extracted from mono-azimuth processed data provide indications about fracture orientation, relative fracture intensity, and their spatial distributions. The results should encourage us to apply multi-azimuth processing to wide-azimuth OBC seismic data to improve focusing quality, image subtle faults, and gain insights into fracture characteristics.
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Borehole image logs for turbidite facies identification: core calibration and outcrop analogues
Authors J.B. Joubert and V. MaïtanIn exploration, appraisal, and development of hydrocarbon fields, the understanding of the sedimentary model requires increasingly sophisticated techniques and analysis to interpret the geometry, facies, and petrophysical properties of the reservoirs. The objective is to understand the reservoir flow properties for making optimum decisions during field development. For this purpose, the use of high resolution image logs provided by service companies has become essential in sedimentary interpretation. When they are correctly calibrated against known facies, image logs can replace coring operations, which are time-consuming, expensive, and limited in the depth interval sampled. Recent examples of application have proved highly successful for exploration wells. Now mature fields can be reinterpreted in the light of the new understanding gained, enabling development plans to be revised with enhanced recovery methods. As a result of the success of this approach, image-based facies interpretation is now included in the standard procedure for evaluation of data from exploration, appraisal, and development wells.
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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)