Glossary

Key seating

During the drilling of deviated wells drill pipe tends to lie on the bottom (low side) of the well bore. This produces wear at the low side of the well in the direction of drilling resulting in an elongate hole described as key seating. Locations for severe key seating are found where rapid changes in hole inclination (doglegs) occur.

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About the glossary
This listing is not exhaustive or definitive, do not expect Oxford English Dictionary standards; it is aimed at those who need to understand basic principles and those that read reports on dipmeters and borehole images requiring some technical help to get the most from such documents.

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Acknowledgements
This listing has been derived by Task Geoscientists. All external sources are fully acknowledged.