18 July 2017

Reservoir pressure

The average pressure within the reservoir at any given time. Determination of this value is best made by bottomhole pressure measurements with adequate shut-in time. If […]
25 July 2017

Reverse circulation

The course of drilling fluid downward through the annulus and upward through the drill stem, in contrast to normal circulation in which the course is downward […]
18 July 2017

Rig

The derrick or mast, drawworks, and attendant surface equipment of a drilling or workover unit.
18 July 2017

Rig breaking capacity (performance)

The capacity to hold the hook-load and retard the continuous movement of the hook load within reasonable specified limits compatible with specific requirements.