A directional well is an oil industry term for an

oil well An oil well is a drillhole boring in Earth that is designed to bring petroleum oil hydrocarbons to the surface. Usually some natural gas is released as associated petroleum gas along with the oil. A well that is designed to produce only gas ma ...

with a

borehole A borehole is a narrow shaft bored in the ground, either vertically or horizontally. A borehole may be constructed for many different purposes, including the extraction of water ( drilled water well and tube well), other liquids (such as petro ...

that deviates from a vertically straight line. This is normally done with the intention of hitting several target sands, for instance.

References

External links

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Directional well
', ''Oilfield Glossary'',

Schlumberger Schlumberger Limited (), doing business as SLB, is an oilfield services company. Schlumberger has four principal executive offices located in Paris, Houston, London, and The Hague. Schlumberger is the world's largest offshore drilling comp ...

Petroleum engineering Oilfield terminology Drilling technology {{Petroleum-stub