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- Volume 28, Issue 10, 2010
First Break - Volume 28, Issue 10, 2010
Volume 28, Issue 10, 2010
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News Feature: Protecting marine seismic exploration from piracy risk: lessons from a western Indian Ocean survey
Authors N. Millar, K. Carroll, A. Camerer and T. EllisNeil Millar, Kim Carroll, Anne Camerer and Tudor Ellis outline the risk management strategies, planning methodology, and operational practices used to combat piracy for a real marine seismic survey in the western Indian Ocean in an area with a known piracy risk.
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Rock physics driven inversion: the importance of workflow
By M. KemperMichel Kemper proposes a reservoir characterization workflow that spans modelling, processing, and quantitative interpretation within a rock physics driven framework (not a mere attribute algorithm) and provides a practical guide with some pitfalls to avoid.
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Applying the phase congruency algorithm to seismic data slices: a carbonate case study
Authors B. Russell, D. Hampson and J. LogeBrian Russell, Dan Hampson and John Loge show how discontinuities on seismic data slices can be identified using a phase congruency approach, an application more commonly associated with identification of features on photographic images and image processing for robot vision. The discussion concludes with two seismic examples − a karst collapse study from the Boonsville field in Texas and a fractured carbonate reservoir from Alberta – where the algorithm is applied to compare the phase congruency results with other seismic techniques such as coherency and curvature.
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New modelling technology delivers consistency
Authors J.-R. Mallet, S. Jayr and P. NeriJean-Laurent Mallet, Stanislas Jayr and Philip Neri of Paradigm consider the problem that a unique mathematical representation of the subsurface cannot cater for all the disciplines of geoscience and engineering. The authors believe that the newly introduced uvt-transform is a major step forward in that it supports multiple representations while linking them through a rigorous process
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Seismically driven characterization of vuggy porosity and fractures in a carbonate field, Sirte Basin, Libya
Authors M. Hammad, A. Shahlol, S. Hajaj, A. Aoues, H. El Werfali, F. BuArgoub and A. KirkhamMahdi Hammad, Abdulhamed Shahlol, Sobhi Hajaj, Amares Aoues, Ahmed Ouenes, Hamed El Werfali, Fawzi BuArgoub and Anthony Kirkham describe a workflow that fully utilizes pre-stack seismic attributes to derive reliable geologic and fracture models for a carbonate field in the Sirte Basin, Libya, validated by blind well testing and actual wells drilled after the study.
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Seismic analysis workflow for reservoir characterization in the vicinity of salt
Authors C.J. Ferguson, A. Avu and G.S. PatonColin J. Ferguson, Anthony Avu, Nick Schofield and Gaynor S. Paton describe a five step post stack seismic analysis workflow to aid the interpretation of reflectivity data around and under salt layers.
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Experimental mechanical compaction to measure the influence of pore pressure on compressional wave velocity in unconsolidated sands
Authors M. Fawad, Mondol N.H., J. Jahren and K. BjørlykkeThis study describes uniaxial mechanical compaction tests performed on two naturally occurring unconsolidated sands with different mineralogy, quartz-rich and quartz-poor, in order to investigate the effect of pore pressure on the P-wave velocity. The compaction experiments simulated burial of sands with increasing vertical stress and pore pressure, and also simulated the effect of overpressure. For both sands the P-wave velocity increased and porosities decreased with increasing pore pressure when the applied vertical stress was increased at the same rate as the pore pressure. These effects may result from grain rearrangement, with decreasing radial effective stress offsetting the contraction of sand grains caused by pore pressure increase. The P-wave effective stress coefficient np was computed using a simple procedure. A decrease in np of the quartz-poor sand above 10 MPa vertical effective stress was observed. This decrease is attributed to compaction, mainly due to grain crushing. The experimental results show that pore pressure can have significant effects on P-wave velocity and np, both directly and indirectly, depending upon the stress loading paths and mineralogy.
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Using high-density OBC seismic data to optimize the Andrew satellites development
Authors L. Padmos, D. Davies, M. Davies and J. McGarrityThe processed data from conventional towed-streamer seismic surveys over the Andrew satellite fields in the Central North Sea are of poor quality because of anomalously fast sand-filled channels in the Eocene overburden. The channels attenuate the primary energy and produce strong multiples. A step change in data quality has been achieved by acquiring a wide-azimuth seismic survey using ocean bottom cables and a high shot density. The new data have much higher signal-to-noise ratio and better resolution. The imaging under the Eocene channels is greatly improved in the processed results of the new survey. Furthermore, the acquisition and processing were completed in time to meet the tight development schedule for the 2008 Kinnoull discovery.
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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)