Drilling Industry Glossary

CaCl₂ weight calcium, total hardness cased hole casing casing centralizer casing coupling (collar) casing hanger casing point casing pressure casing shoe casing string casing wear cement cement additive cement bond cement bond survey cementing cementing pump chlorides chlorides whole mud choke choke line circulation sub coarse LCM coiled tubing collapse pressure completion completion fluid concentration conductivity conductor pipe contractor critical rate critical velocity crooked hole crossover sub crude oil cuttings

Cement

A powder consisting of alumina, silica, lime, and other substances that hardens when mixed with water. It is used extensively to bond casing to the walls of the wellbore.

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