18 July 2017

Zero-zero gel

A condition wherein the drilling fluid fails to form measurable gels during a quiescent time interval (usually 10 min).
18 July 2017

Zeta potential

The electrokinetic potential of a particle as determined by its electrophoretic mobility. This electric potential causes colloidal particles to repel each other and stay in suspension.
25 July 2017

Zinc chloride

ZnCl2 – A very soluble salt used to increase the density of water to points more than double that of water. Normally added to a system […]
25 July 2017

Zone

A section of the well’s formation.