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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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