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- Volume 16, Issue 12, 1998
First Break - Volume 16, Issue 12, 1998
Volume 16, Issue 12, 1998
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Oil companies take sides as global warming becomes the hot topic
A four page briefing on how international oil companies are reacting to the hot topic of global warming. It is an issue that they could do without as they struggle to survive the low oil price environment, and it reveals big differences in approach on each side of the Atlantic.
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Discussion/ reply
Authors J. Ashbridge and J. HesthammerEvaluation of the timedip, correlation and coherence maps for structural interpretation of seismic data (Hesthammer, FB 15:5, May 1998)
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Sampling 2D seismic data in order to evaluate their linear radon transform
By V. BardanUsing a new point-of-view on how to sample 2D seismic data, Bardan establishes the sampling limitations necessary in order to evaluate the linear radon transform.
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Relationships between porosity and effective stress in shales
By N. R. GoultyIn order to predict overpressures by basin modelling, it is essential to understand the process of mechanical compaction and its effect on the porosities and permeabilities of sedimentary rocks. Two fundamental issues for modelling overpressure history are the functional relationships between porosity and effective stress, and between permeability and porosity. This article is concerned with the first of these relationships in shales, since they comprise the majority of rocks in sedimentary basins and their low permeabilities restrict the rate at which excess fluid pressure can be dissipated. My key point is that porosity reduction during mechanical compaction of a sediment depends on the mean effective stress, not the vertical effective stress. This must be recognized if we wish to understand the origin of overpressures observed in sedimentary basins.
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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)