Well Casing

Well Casing

Large diameter pipe that is assembled and inserted into newly drilled intervals of a well. The upper portions of a cased well are commonly cemented in place to provide a smooth internal bore, and prevent the inflow of water and/or collapse of the hole.

Geothermal Glossary

Word of the Week – Liquid-Dominated Reservoir

Word of the Week – Liquid-Dominated Reservoir

Liquid-Dominated Reservoir Typical of the large proportion of conventional geothermal resources in which wells are self-flowing or pumped depending on reservoir temperature. Self-flowing wells produce a mixture of steam and hot water from reservoirs that are close to...

Word of the Week – Lost Circulation

Word of the Week – Lost Circulation

Lost Circulation Refers to the loss or escape of drilling fluid into permeable zones made up of fractured or porous rock encountered during drilling.

Word of the Week – Mafic

Word of the Week – Mafic

Mafic A geological term referring to igneous rocks that are equivalent to basalt and diorite in composition.

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