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Abstract
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Chapter from: SG
42: Applications of 3-D Seismic Data to Exploration and Production
Edited by:
Paul Weimer and Thomas L. David Author:
J. Douglas Uffen
Published 1996 as
part of Studies in Geology 42
Copyright © 1996 The American Association of Petroleum
Geologists. All Rights Reserved. |
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*Editorial Note: Page numbers in this digital version
(HTML and PDF) do not correspond to those of the hardcopy.
Otherwise, the two are the same.
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CHAPTER 19
Chapter 19: Swan
Hills Unit #1: Adding Value with Seismic Data Through Reservoir Delineation
and Characterization J. Douglas Uffen*
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Uffen, J. D.,
Swan Hills Unit #1: Adding value with seismic data through reservoir delineation
and characterization, in P. Weimer and T. L. Davis, eds., AAPG
Studies in Geology No. 42 and SEG Geophysical Developments Series
No. 5, AAPG/SEG, Tulsa, p. 179-188. |
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ABSTRACT
An intensive geological
study by the operator of the production Unit suggested that clean, unswept
reef edge oil could exist in the reservoir. 3-D seismic data were acquired
to delineate the reef edge to mitigate drilling risk associated with tapping
into these potential reserves. Environmental concerns resulted in modifications
to the original program design. Data quality exceeded expectations. Lithologic
model-based seismic inversion was conducted to enhance confidence in the
location of the reef edge and to investigate whether porosity predictions
were possible. Log balancing, pattern recognition event picking, and isovelocity
mapping of the reef and platform section were technological innovations
required to address this mandate. Reef edge predictions and porosity predictions
appeared trustworthy with resolution limits stretched to 1/6th of a wavelength.
The seismic program proved to add value by mitigating drilling risk for
two horizontal wells and one vertical well. The drilling results reaffirmed
predictions, and unit production increased. |
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