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Book Chapter

Hierarchy of Deep-Water Architectural Elements With Reference to Seismic Resolution: Implications for Reservoir Prediction and Modeling

By
B. E. Prather
B. E. Prather
Shell International E&P P.O. Box 60 2280 AB Rijswijk The Netherlands
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F. B. Keller
F. B. Keller
Shell International E&P, Inc. P.O. Box 576 Houston, Texas 77001
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M. A. Chapin
M. A. Chapin
Shell International E&P, Inc. P.O. Box 576 Houston, Texas 77001
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Published:
December 01, 2000

Abstract

Seismic acquisition and processing imposes a spatial filter on the resolution of subsurface stratigraphy. In deep water settings, we recognize four orders of seismic and several orders of sub-seismic stratigraphy. Individual deep water sandstone bodies are usually resolvable on conventional 6-60 Hz seismic data as an amalgam of seismic loops or wavelets (fourth-order seismic). Upon closer inspection, units within many of these sandstone bodies display an internal architecture resulting from depositional topography and various small-scale erosional processes. Internal (first- and second-order sub-seismic) reservoir architecture is locally seen on seismic data as changes in waveform morphology and develops from episodes of starvation, bypass, and/or erosion. These processes produce surfaces that may pass from the tops to the bases of reservoir units. The surfaces influence bed-length and connectivity, especially where draped by mudstone. Classical depositional models usually focus on external reservoir architecture, thereby failing to fully explain reservoir compartmentalization as a control on hydrocarbon recovery.

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Contents

GCSSEPM

Deep-Water Reservoirs of the World

Paul Weimer
Paul Weimer
Houston, Texas
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SEPM Society for Sedimentary Geology
Volume
20
ISBN electronic:
978-0-9836097-0-4
Publication date:
December 01, 2000

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