دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a chemical additive that reduces the setting time of cement. See cement, cementing materials.

n: A downhole tool used in conjunction with a jar to store energy that is released suddenly when the jar operates.

n: 1. in general, a substance added in small amounts to a larger amount of another substance to change some characteristic of the latter. In the oil industry, additives are used in lubricating oil, fuel, drilling mud, and cement. 2. in cementing, a substance added to cement to change its characteristics to satisfy specific conditions in die well. A cement additive may work as an accelerator, retarder, dispersant, or other reactant.

n: The agent put into the drilling fluid in order to change some performances of the drilling fluid or slurry.

a compound incorporated into a gas, liquid, or solid system to alter the properties for a particular purpose.

n: a motor-driven paddle or blade used to mix the liquids and solids in drilling mud.

n: A mechanically driven impeller used to stir the drilling fluid to assist in the suspension of solids, blending of additives, and maintenance of uniform consistency.

n: An additive that adjusts acidity and alkalinity of the drilling fluid.

n: One of the component of grain amylum. It is organic fluid loss additive.

n: The additive which can change exchangeable negative ion which absorbed in the surface of the clay.

n: The additive which can change exchangeable negative ion which absorbed in the surface of the clay.

n: The paper applied asphalt. Used as the container of drilling fluid additive. The best advantage is dampproof and waterproof.

n pl: a large, widely distributed group of typically one-celled microorganisms. See anaerobic bacteria, sulfate reducing bacteria.

n: Refers to the microbe that makes drilling fluid decrease filtration rate and viscosity due to it can destroy amylum additive.