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The AAPG/Datapages Combined Publications Database
Houston Geological Society Bulletin
Abstract
Abstract: Excavating an Oil Field Dinosaur-The Key to Dipmeter Quality Control
By
Terradip
Dipmeters are extremely valuable tools,
especially in the current environment of
high-tech seismic
exploration. They are
integral in resolving velocities in 3-D surveys,
essential in evaluating thin-bedded
lithologies, and useful in defining bed dips
in sub-salt or structurally complex plays.
But too often, an explorationist views the
tadpole plot itself as measured
data
. This
is an error. The tadpole plot is simply one
interpretation
of the original resistivity
data
. In many cases, fresh information
can be extracted from old dipmeters by
re-examining and reinterpreting the raw
resistivity
data
.
The correct correlation among different
resistivity curves is the heart of dipmeter
computation. Assuming that the dip tool
functioned correctly, the accuracy of the
tadpole plot is a direct result of the clarity
of these correlations. In this talk, examples
will be used to show how the 60-inch raw
resistivity data
can be used as a valuable
tool to assess the reliability of your old and
new dipmeter
data
-perhaps even answering
the age-old question, "What do I do if
the dipmeter doesn't fit the
seismic
?"
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