دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a well in a process vessel or line used as a thermometer or thermocouple holder.

n: The additive that can make the viscosity and shearing force of drill fluid increasing.

n: the amount of time required for cement to reach an APIestablished degree of consistency, or thickness. Thickening time begins when the slurry is mixed. thief n: a device that is lowered into a tank to take an oil sample at any depth. The sample will subsequently be used to deter- mine the quality and S&W content of the oil in the tank. v: to obtain a sample of oil from a tank using a thief.

n: The ultimate time that viscosity of cement slurry coming to 10Pa.s


the time that a cement slurry will remain pumpable at temperature and pressure.

v: to add a substance such as water or a chemical to drilling mud to reduce its viscosity.

n: A thinning agent used to reduce viscosity or prevent flocculation;incorrectly called a dispersant. Most deflocculants are low-molecular weight anionic polymers that neutralize positive charges on clay edges. Examples include polyphosphates, lignosulfon

materials that change the relationship between solids and viscosity of a fluid to lower the gel strength, yield point, yield strength or viscosity as it affected by solids.

n: a special chemical or combination of chemicals that, when added to a drilling mud, reduces its viscosity.

n: A thinning agent used to reduce viscosity or prevent flocculation;incorrectly called a dispersant. Most deflocculants are low-molecular weight anionic polymers that neutralize positive charges on clay edges. Examples include polyphosphates, lignosulfon

fluid property of being a semi-solid gel at rest and liquid when pumped. Thixotropic fluids decrease in viscosity with time at shear.