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The AAPG/Datapages Combined Publications Database
Houston Geological Society Bulletin
Abstract
Abstract: Using New Sequence Stratigraphy Concepts
and
3-D
Seismic Imaging to Evaluate Bend
Conglomerate Reservoirs


By
Bureau of Economic Geology, Austin, Texas
The Bureau of Economic Geology
has assembled a detailed geologic,
petrophysical, and engineering database
describing properties of Bend
Conglomerate reservoirs in a 30 sq. mi.
area of Boonsville field, Wise and Jack
Counties, Texas. These subsurface data
were later supplemented with a 26 sq.
mi 3-D
seismic survey that used several
novel techniques to achieve high-resolution
images of thin-bedded units.
This presentation will illustrate how
modem sequence stratigraphic concepts were applied to these older historical
well logs to describe detailed
stratigraphic relationships in the Bend
Conglomerate in a new and insightful
way. There is no published equivalent
of this type of sequence stratigraphic
analysis now being applied to the Bend
Conglomerate.
We will present the screening techniques
used to analyze the reservoir engineering
data to determine where
unpenetrated Bend Conglomerate reservoir
compartments might exist, and
these
engineering concepts will be integrated
with the sequence stratigraphy
results. The procedures used to
produce high-resolution 3-D
seismic
images of subtle Bend Conglomerate
reservoirs will then be discussed, together
with the borehole seismic techniques
that were used to calibrate the
thin-bed sequence stratigraphy to the
surface-recorded seismic data. To date,
two wells have been drilled on the basis
of these research concepts, and these
case histories will be presented.
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