Channeling
3 definitions

Channeling

When casing is being cemented in a borehole, the cement slurry can fail to rise uniformly between the casing and the borehole wall, leaving spaces, or channels, devoid of cement. Ideally, the cement should completely and uniformly surround the casing and form a strong bond to the borehole wall. See cement channeling.    

Channeling

Conservation · Irregular veins (channels) in photographic negatives formed by the separation of the emulsion from the base.

Channeling

Winds parallel to the main (longitudinal) axis of a mountain valley, resulting from the diversion of momentum from larger-scale winds above ridgetops into the valley.

Most commonly, direct transfer of momentum into the valley by mixing or by an impressed large-scale pressure gradient produces a flow along the valley axis that represents a component of the larger-scale flow, that is, in the same direction as the flow aloft. Occasionally, however, the perpendicular geostrophic wind relationship between the pressure gradient and the large-scale wind can lead to situations where the impressed pressure gradient produces a flow in the valley in the opposite direction to the along-valley component of the large-scale flow above the ridgetops.

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About this term

Channeling has been defined 3 different ways in documents like Oil and Gas Well Drilling and Servicing Glossary, A Glossary of Archival and Records Terminology, Glossary of Meteorological Terms.

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