Word of the Week – Perforation


The process of punching holes through the steel casing liner in a well in order to inject fluid into or produce fluid out of the reservoir rock. Perforations are achieved through deployment of a perforation gun, which is a string of explosive charges.

Word of the Week – Well Logging

Well Logging

Methods used to survey and characterize the physical and geological characteristics along and near the wall of a well, including the temperature, pressure, fracture density, fracture orientation, porosity, rock type, casing integrity, and fluid chemistry.

Word of the Week – Spudding In

Spudding In

Denotes the start of the well. The term originated from cable tool drilling where spudding is the act of hoisting the drill pipe and letting it fall freely so that the drill bit strikes the bottom of the well bore with sufficient force to break the rock.