دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: 1. the closeness of the results of successive measurement of the same quantity carried out by the same method, by the same person with the same measuring instrument at the same location over a short period of time. 2. the ability of a meter and prover system to repeat its registered volume during a series of consecutive proving runs under constant operating conditions.

v: to increase or maintain reservoir pressure by injecting a pressurized fluid (such as air, gas, or water) to effect greater ultimate recovery.

n: 1. the closeness of the results of measurements of the same quantity where the individual measurements are made by different observers using different methods with different measuring instruments at different locations after a long period of time, or where only some of the factors listed are different. 2. the ability of a meter and prover system to reproduce results over a long period of time in service where the range of variation of pressure, temperature, flow rate, and physical properties of the metered liquid is negligibly small.

n: a subsurface, porous, permeable rock body in which oil and/or gas has accumulated. Most reservoir rocks are limestones, dolomites, sandstones, or a combination. The three basic types of hydrocarbon reservoirs are oil, gas, and condensate. An oil reservoir generally contains three fluids-gas, oil, and water-with oil the dominant product. In the typical oil reservoir, these fluids become vertically segregated because of their different densities. Gas, the lightest, occupies the upper part of the reservoir rocks;water, the lower part;and oil, the intermediate section. In addition to its occurrence as a cap or in solution, gas may accumulate independently of the oil;if so, the reservoir is called a gas reservoir. Associated with the gas, in most instances, are salt water and some oil. In a condensate reservoir, the hydrocarbons may exist as a gas, but, when brought to the surface, some of the heavier ones condense to a liquid.

n: a subsurface porous permeable formation in which oil or gas is present.

an independent hydrocarbon holding rock.

n pl: nonuniformities in the structure of properties of petroleum reservoirs, such as lenticular formation, pinch-outs, faults that cut across the reservoir, shale barriers, and variations in permeability.

n: the naturalform that a section of coiled tubing string will take if spooled from the reel and to rest without any residual bend results from the plastic deformation imparted as the string is spooled around the radius of the reel and guide arch.

n: 1. in improved recovery, oil remaining in a reservoir after an improved recovery method has been applied and displacement has occurred. 2. in petroleum refining, the combustible, viscous, or semiliquid bottoms product from crude oil distillation, used as adhesives, roofing compounds, asphalt, low-grade fuels, and sealants.

n: a semisolid or solid complex, amorphous mixture of organic compounds having no definite melting point or tendency to crystallize. Resins may be a component of compounded materials that can be added to drilling fluids to impart special properties to the fluid.

a cyclic material that, along with maltenes, helps keep asphaltenes tied up a micelles in suspension.

n: opposition to the flow of direct current caused by a particular material or device. Resistance is equal to the voltage drop across the circuit divided by the current through the circuit.