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Drilling

Of or relating to the penetration of the Earth's surface in order to extract petroleum oil.

Contributors in Drilling

Drilling

oil-water interface

Oil & gas; Drilling

The surface of contact between a water layer and an oil layer.

wellhead

Oil & gas; Drilling

The system of spools, valves and assorted adapters that provide pressure control of a production well.

interfacial tension

Oil & gas; Drilling

The surface free energy that exists between two immiscible liquid phases, such as oil and water. (Surface tension is the term for the energy barrier between a liquid and air. ) The energy barrier ...

shut-in pressure

Oil & gas; Drilling

The surface force per unit area exerted at the top of a wellbore when it is closed at either the Christmas tree or the BOP stack. The pressure may be from the formation or an external and intentional ...

driller

Oil & gas; Drilling

The supervisor of the rig crew. The driller is responsible for the efficient operation of the rigsite as well as the safety of the crew and typically has many years of rigsite experience. Most ...

yield stress

Oil & gas; Drilling

The stress that must be applied to a material to make it begin to flow (or to yield). Yield stress is a parameter in the Herschel-Bulkley rheological model.

derrick

Oil & gas; Drilling

The structure used to support the crown blocks and the drillstring of a drilling rig. Derricks are usually pyramidal in shape, and offer a good strength-to-weight ratio. If the derrick design does ...

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