دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a carbohydrate composed of many monosaccharides. Polysac- charides are used to adjust the viscosity of water slugs in chemical flooding operations.

n: a reservoir or group of reservoirs. The term is a misnomer in that hydrocarbons seldom exist in pools, but, rather, in the pores of rock. v: to combine small or irregular tracts into a unit large enough to meet state spacing regulations for drilling. pooling n: the combining of small or irregular tracts into a unit large enough to meet state spacing regulations for drilling. Compare unitization.

generally a petroleum containing reservoir or group of reservoirs.

n: a spring-loaded safety valve that opens automatically when pressure exceeds the limits for which the valve is set. It is used as a safety device on pressurized vessels and other equipment to prevent damage from excessive pressure. Also called a relief valve, safety valve, or safety relief valve.

n: the valve that automatic opens and blowdowns when the pressure exceeds beforehand adjusted pressure.

n: a device that controls the rate of flow of fluid in a line or opens or shuts off the flow of fluid completely. When open, the sealing surface of the valve is moved away from a seat;when closed, the sealing surface contacts the seat to shut off flow. The direction of movement of the valve is usually perpendicular to the seat. Poppet valves are used extensively as pneumatic (air) controls on drilling rigs and as intake and exhaust valves in most intemalcombustion engines.

a type of valve common on early subsurface safety valves, where higher than expected flow through an orifice can move a round ball onto a sealing surface and stops the flow.

n: an opening or space within a rock or mass of rocks, usually small and often filled with some fluid (water, oil, gas, or all three). Compare vug.

n: an opening within a rock;is often filled with formation fluids.

the opening within the rock. Interconnected porosity is linked together and results in permeability.

a range of the pore sizes plotted against frequency of that size. Mercury is injected at step-wise increasing pressures where large pore fill first, followed by smaller pores at successfully higher pressures. Volumes injected at different pressures indica

n: (PV) the total volume of pore space in a reservoir formation.

n: a device used to determine porosity of a formation by measuring a known volume of gas at a known pressure compressed into a core sample. The gas is measured at atmospheric pressure and at an elevated pressure. These measurements are used to calculate gain volume and pore vol- ume.

n: 1. the condition of being porous (such as a rock formation). 2. the ratio of the volume of empty space to the volume of solid rock in a formation, indicating how much fluid a rock can hold. See absolute porosity, effective porosity, pore.

n: a parameter used to measure the pore space within a rock(usually given as a percentage).

the percentage of the rock volume that is not rock grains and could be occupied by fluids. Pores may or may not be connected.

n: 1. (nautical) left side of vessel (determined by look.ing towaro the bow). 2. the opening in the side of a liner in a twostroke cycle engine.