Abstract
The article describes the completion of drilling a well, lowering and cementing the production line, as well as after digging the cement plug in the casing (the height of the rise of the cement behind the belt if it is determined that there is a cement plug in the casing when determining with an electric thermometer)used to hang safety belts during wellhead equipment information on casing heads, their types and the study of the sealing element. Keywords: casing head, casing hanger, hermetic knots, casing spool, rubber sealant, metal sealant.
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