دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: A kind of invert emulsion mud that the chemical potential of drilling fluid is equal to the chemical potential of water in the drilled formation. The salinit in the water phase is usually equal to salinit in the shale water. It can prevent shale permeatin

n: A kind of anionic surface active agent. Used for the component part of emulsifier of invert emulsion mud and pipe lax.

n: a kind of negative ion surfactant ,mainly used as emulsifier of invert emulsion mud

invert emulsion mud.

An emulsion that has swapped the internal phase to the external phase.

n: also called water-in-oil emulsion mud,oil is continual external phase and water is dispersed phase.

n: a drilling fluid that contains up to 50% by volume of the weater,which is distributed as droplets in the continuous oil phase.emulsifying agents and other additives are also present.

n: an invert emulsion is a water-in-oil emulsion where fresh or salt water is the dispersed phase and diesel, crude or some other oil is the continuous phase and increase the viscosity and oil reduces the viscosity.

n: a drilling or workover fluid in which oil is the continuous phase and which contains from less than 2 percent and up to 5 percent water. This water is spread out, or dispersed, in the oil as small droplets. See invert emulsion mud. oil mud.

n: The emulsifier have assistant affect in the invert emulsion mud.