10 November 2021

Maximum Allowable Annulus Surface Pressure (MAASP)

Acceptable criteria for annulus pressure at the wellhead; also MAASP.
18 July 2017

Maximum anticipated surface pressure (MASP)

MASP is the calculated maximum internal pressure that the blow-out preventer (BOP) and related equipment will be subject to while conducting well operations. MASP establishes pressure […]
18 July 2017

Mechanical rig

A drilling rig in which the source of power is one or more internal-combustion engines and in which the power is distributed to rig components through […]
18 July 2017

Mechanized roughneck

A machine that integrates the function of a spinning wrench and a torque wrench to make up and break out drill pipe connections. These machines evolved […]