Oilfield Glossary
Oilfield Glossary
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Tools

geosteer

1. vb. [Drilling]
To control the direction of a well based on the results of downhole geological logging measurements rather than three-dimensional targets in space, usually to keep a directional wellbore within a pay zone. In mature areas, geosteering may be used to keep a wellbore in a particular section of a reservoir to minimize gas or water breakthrough and maximize economic production from the well.