دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the ratio of the volume of liquid produced to the volume of residue gas produced;usually expressed in barrels per million cubic feet.

n: water that condenses out the air inside a fuel tank. When the temperature drops, water vapour in the air that lies above the fuel in a tank condenses into liquid water. This water tends to fall to the bottom of the tank where it can be drained. It is good practice to keep the tank full of fuel to minimise the amount of air out of which condensate water can drop.

n: the process by which vapours are converted into liquids, chiefly accomplished by cooling the vapours, lowering the pressure on the vapours, or both. Condensation is often the cause of the presence of water in fuels.

n: 1. a form of heat exchanger in which the heat in vapours is transferred to a flow of cooling water or air, causing the vapours to form a liquid.2. a capacitor.

n: 1. the ability to transmit or convey (as heat or electricity). 2. an electricallogging measurement obtained from an induction survey, in which eddy currents produced by an alternating magnetic field induce in a receiver coil a voltage proportionate to the ability of the formation to conduct electricity. See induction log.

n: Measure of the quantity of electricity transferred across unit area per unit potential per unit time. It is the reciprocal of resistivity. Electrolytes may be added to a fluid to alter its conductivity.

n: shaking or vibrating of the cones of a bit that occurs when the bit bearings are worn.

n: The cone shakes in the bearing because of bearing wearing and big interspace. It is harmful for drilling.

n: the second producer in a new field, following the discovery well.

n: A kind of appraisal well.

or delineation well;a secondary well, after a field discovery well, drilled to help determine field extent, volume or potential rate.

n: a sedimentary rock composed of pebbles of various sizes held together by a cementing material such as clay. Conglomerates are similar to sandstone but are composed mostly of grains more than 2 millimetres (0.08 inch) in diameter. Most conglomerates are found in discontinuous, thin, isolated layers;they are not very abundant. In common usage, the term conglomerate" is restricted to coarse sedimentary rock with rounded grains;conglomerates made up of sharp, angular fragments are called breccia.

poorly sorted collection of sediments, generally formed in a very high energy environment. Similar to sandstones but have much larger grains (pebbles grade 4 to 64 mm). The space between the grains may be partly or completely filled with sand grains.

n: the encroachment of reservoir water or gas into the oil column and well because of production. The water or gas tends to rise near the well bore and assume a conical shape.

the movement of a water upwards or gas downwards towards a decrease in pressure caused by producing hydrocarbons in a zone with no vertical permeability boundaries.