دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the distortion of the hull of an offshore drilling rig when the bow and the stem are lower than the middle, caused by wave action or unbalanced or heavy loads. Compare sagging.

n pl: the lines running from the bow of a mobile offshore drilling rig, especially the forward mooring lines.

a low to moderate strength centralizer formed by arched spring-like straps of metal.

n: in drilling operations, an insert that fits into the opening of a master bushing and accommodates the slips.

n: See insert.

a section of the wellhead or of a tool what allows slips to be inserted to hold pipe or equipment.

n: See bull-dog slip socket.

n: a knot used primarily in lifting heavy equipment with the catline, since it can be readily tied and untied regardless of the weight of the load on it.

n: kinking when lifting heavy object with cathead line.