Discrete component of which a number in series are used to piggy-back one or more supported pipes to a supporting pipe over a prescribed length.

Source: API RP 17L2, Recommended Practice for Flexible Pipe Ancillary Equipment, First Edition, March 2013. Global Standards



Fluid containing insoluble weighting materials that is used to separate drilling fluids and cementing slurries.

Source: API RP 10B-2, Recommended Practice for Testing Well Cements, First Edition, July 2005 (Reaffirmed: July 2010). Global Standards



Pressure-containing piece of equipment used to connect and provide separation between other pieces of equipment.

Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards


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