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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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