18 July 2017

Effective permeability

A measure of the ability of a single fluid to flow through a rock when another fluid is also present in the pore spaces. Compare absolute […]
18 July 2017

Effective porosity

The percentage of the bulk volume of a rock sample that is composed of interconnected pore spaces that allow the passage of fluid through the sample. […]
18 July 2017

Electric well log

A record of certain electrical characteristics (such as resistivity and conductivity) of formations traversed by the borehole. It is made to identify the formations, determine the […]
18 July 2017

Electrodynamic brake

A device mounted on the end of the drawworks shaft of a drilling rig. The electrodynamic brake (sometimes called a magnetic brake) serves as an auxiliary […]