The texture exhibited by loam, silt loam, silt, and sandy clay loam soils.

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A device used to provide a short space of free wireline travel before solidly connecting to the BHA in a string.

A regular pressure test on an injection well to assure the integrity of the isolation seal.

A strainer type filter that is specifically for removal of larger particles in a liquid stream.

A group of statistics, most commonly mean, median, and mode but also geometric and harmonic mean, which represent typical values of the data.

"Logging While Drilling" is one form of "measurement while drilling" - to differentiate it from mud logging, wireline logging, etc. See Logging While Drilling.

For data, the statistic obtained by summing N data points then dividing by N. Also, called average, arithmetic average, expected value.

Content of PetroWiki is intended for personal use only and to supplement, not replace, engineering judgment. SPE disclaims any and all liability for your use of such content.