دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

v: 1. to collect a mass of sticky consolidated material, usually drill cuttings, on drill pipe, drill collars, bits, and so forth. A bit with such material attached to it is called a balled-up bit. Balling up is frequently the result of inadequate pump pressure or insufficient drilling fluid. 2. in reference to an anchor, to fail to hold on a soft bottom, pulling out, instead, with a large ball of mud attached.

n: The phenomenon that drill bit or drill tool is surrounded by cutting and viscous mud in drilling progress.

the time after mixing of the cement slurry before the cement becomes so viscous that it cannot be pumped.

n: the device used to remove unwanted gas from a liquid, especially from drilling fluid.

n: A device that removes entrained gas from a drilling fluid, especially the very small bubbles that do not float readily in viscous drilling fluid.

any device that helps remove gas from circulated fluid.

n: in fluid dynamics, the state of a fluid in motion is determined by the type of fluid (e.g., Newtonian, plastic, pseudoplastic, dilatant);properties of the fluid such as viscosity and density;geometry of the system;the velocity. Thus, under a given set of conditions and fluid properties, the fluid flow can be described as plug flow, laminar (called also Newtonian, streamline, parallel, or viscous) flow, or turbulent flow.

n: the state of fluid dynamics of a fluid in motion is determined by the type of fluid (e.g, newtonian,plastic pseudoplastic, dilatant),the properties of the fluid such as viscosity and density, the geometry of the system and the velocity,thus under a given

n: resistance to movement created when two surfaces are in contact. When friction is present, movement between the surfaces produces heat.

the resistance to a object’s passage through a fluid (or a fluid’s passage past a stationary object). Affected by viscous resistance, density, wall contact (vessel radii).

adj: see clabbered.

n: oil-field jargon usually referring to any fluid with high gel strength and/or highly viscous properities. Often a state of severe flocculation.

n: any hydrophilic plant polysaccharides or their derivatives that. when dispersed in water. swell to produce a viscous dispersion or solution. Unlike resins, they are soluble in water and insoluble in alcohol.

polymer gellants.

n: a kind of rheological parameter instrument mad by HBC corporation,able to measure the visicosity of higher viscous fluid

n: a method of improved recovery in which heat is generated within the reservoir by injecting air and burning a portion of the oil in place. The heat of initial combustion cracks the crude hydrocarbons, vaporises the lighter hydrocarbons, and deposits the heavier hydrocarbons as coke. As the fire moves from the injection well in the direction of producing wells, it bums the deposited coke, releases hot combustion gases, and converts connate water into steam. The vaporised hydrocarbons and the steam move ahead of the combustion zone, condensing into liquids as they cool and moving oil by miscible displacement and hot waterflooding. Combustion gases provide additional gas drive. Heat lowers the viscosity of the oil, causing it to flow more freely. This method is used to recover heavy, viscous oil. Also called fire flooding.