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Books > Earth & environment > Earth sciences > Geology & the lithosphere > Geological surface processes (geomorphology)
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Sediment Compaction and Applications in Petroleum Geoscience (Paperback, 1st ed. 2020)
Loot Price: R2,447
Discovery Miles 24 470
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Sediment Compaction and Applications in Petroleum Geoscience (Paperback, 1st ed. 2020)
Series: Advances in Oil and Gas Exploration & Production
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This book discusses how sediments compact with depth and
applications of the compaction trends. Porosity reduction in
sediment conveniently indicates the degree of sediments compacted
after deposition. Published empirical curves- the compaction
curves- are depth-wise porosity variation through which change in
pore spaces from sediment surface to deeper depths e.g. up to 6 km
can be delineated. Porosity is derived from well logs. Compaction
curves, referred to as the Normal Porosity Profile of shales,
sandstones and shale bearing sandstones of different models are
reviewed along with the different mechanical and chemical
compaction processes. These compaction models reveals how porosity
reduces depth-wise and the probable reason for anomalous zones.
Deviation from these normal compaction trends may indicate abnormal
pressure scenarios: either over- or under pressure. We highlight
global examples of abnormal pressure scenarios along with the
different primary- and secondary mechanisms. Well logs and cores
being the direct measurements of porosity, well log is the only
cost-effective way to determine porosity of subsurface rocks.
Certain well logs can detect overpressure and the preference of one
log above the other helps reduce the uncertainty. Apart from
delineation of under-compacted zones by comparing the modeled- with
the actual compaction, porosity data can also estimate erosion.
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