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- Volume 32, Issue 11, 2014
First Break - Volume 32, Issue 11, 2014
Volume 32, Issue 11, 2014
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Evaluation of a broadband marine source
Authors R. Telling, S. Denny, S. Grion and R.G. WilliamsRob Telling, Stuart Denny, Sergio Grion and R. Gareth Williams evaluate far-field signatures and compare processing results for a 2D test-line acquired with an experimental broadband source and a standard source.
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Improving acquisition efficiency by managing and modelling seismic interference
Authors R. Laurain, F. Ruiz-Lopez and S. EidsvigRenaud Laurain, Francisco Ruiz-Lopez and Seija Eidsvig present an SI QC workflow which reduces the seismic interference related downtime.
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Enhanced subsurface illumination from separated wavefield imaging
Authors S. Lu, D. Whitmore, A. Valenciano and N. CheminguiShaoping Lu, Dan Whitmore, Alejandro Valenciano and Nizar Chemingui present applications of separated wavefield imaging to a deepwater wide-azimuth survey in the Gulf of Mexico and to a narrow azimuth data set from offshore Malaysia.
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Attenuation of post-critical acoustic basement events for improved far offset reservoir imaging
By C.I. BullockC.I. Bullock discusses methods for managing critical/post-critical basement events and their potential pitfalls.
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The impact of CSEM on exploration decisions and seismic: two case studies from the Barents Sea
Authors S. Fanavoll, P.T. Gabrielsen and S. EllingsrudStein Fanavoll, Pål T. Gabrielsen and Svein Ellingsrud provide an update on CSEM activity in the Barents Sea and argue that CSEM data can support seismic and help the industry make better decisions at different stages of exploration.
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Benefits of integrated approaches for solving imaging challenges presented by complex geology: latest developments in marine wide- and full-azimuth surveys
Authors C. Judd, R. Siliqi, F. Mandroux, J. Firth and C.-O. TingConrad Judd, Risto Siliqi, Fabrice Mandroux, Jo Firth and Chu-Ong Ting present examples of wide-azimuth and full-azimuth acquisition technology in salt-dominated petroleum systems to ensure delivery of optimal data.
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An analysis of protocols for the calculation of tract participation
More LessSeveral different methods have been evaluated for calculating tract participation in diverse reservoir situations where a unitized field straddles a domestic or international licence boundary. There are three key elements. The first concerns the choice of a static or dynamic basis for tract participation or a hybrid method that falls somewhere between the two. The second involves the introduction of any conversion or weighting factors that are designed to take account of systematic differences in hydrocarbon type or reservoir quality across the field. The third relates to adopted practices for the volumetric calculations, specifically the equity-sensitive areas of scale considerations, fluid levels, net-to-gross ratio, and reservoir mapping. These key elements are analysed from the standpoint of securing a fair and equitable (re)determination of tract participation. Recommendations for a more technically substantive approach reinforce the pareto-efficiency of unitization, so that the cost of the exercise to each partner is a good deal smaller than the greater revenue that can be secured by that partner through the integrated development of a straddling field. However, every unitization and redetermination situation is different, and each case should be considered on its merits if maximum benefits are to be attained.
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Diffraction imaging of the Eagle Ford shale
Authors I. Sturzu, A.M. Popovici, M.A. Pelissier, J.M. Wolak and T.J. MoserDiffraction imaging is a novel technology that uses diffractions to image very small subsurface elements. Diffraction imaging may: (1) improve prospect characterization and pre-drill assessment of the local geology; (2) improve production and recovery efficiency; (3) reduce field development cost; and (4) decrease environmental impact. Field development may be accomplished with fewer wells to optimally produce the reservoir using high-resolution images of small-scale fractures in shale or carbonate intervals. Standard approaches to obtain high-resolution information, such as coherency analysis and structure-oriented filters, derive attributes from stacked, migrated images. Diffraction imaging, in comparison, acts on the pre-stack data, and has the potential to focus super-resolution structural information. Diffraction images can be used as a complement to the structural images produced by conventional reflection imaging techniques, by emphasizing small-scale structural elements that are difficult to interpret on a conventional depth image. An efficient way to obtain diffraction images is to first separate the migration events according to the value of the specularity angle, in a similar way to offset gathers, and subsequent post-stack processing. The high-resolution potential is demonstrated by the diffraction images from the Kenedy 3D survey over the Eagle Ford shale, which show much more detail than conventional depth migration or coherence.
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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)