Glossary

Accelerometer

A device whose output is a function of its acceleration. Dipmeter and imaging tools are run with a package of three mutually perpendicular accelerometers, in the x, y (horizontal) and z (vertical) axes of the tool. These record tool movement and are used to position the tools, in conjunction with 3-axis magnetometers. The accelerometer data can be used to correct irregular tool movements.

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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.

We have attempted to make the descriptions and explanations generic, giving the glossary a wide application and appeal, with minimal, if any, commercial bias. If you spot any mistakes, omissions or any problems with the explanations, please do not hesitate to contact us, and we will try to accommodate your comments.

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