دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

the driving force in the reservoir, usually gas cap, dissolved gas, water drive, gravity, or compaction of sediments.

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: oil in place in the reservoir;unproduced oil. Compare stock tank oil.

n: the average pressure within the reservoir at any given time. Determination of this value is best made by bottomhole pressure measurements with adequate shut-in time. If a shut-in period long enough for the reservoir pressure to stabilize is impractical, then various techniques of analysis by pressure buildup or drawdown tests are available to determine static reservoir pressure.

the pore pressure in the reservoir, usually at current value unless otherwise specified.

n: a permeable rock that may contain oil or gas in appreciable quantity and through which petroleum may migrate.

a rock containing porosity, permeability, sufficient hydrocarbon accumulation and a sealing mechanism to form a reservoir from which commercial flows of hydrocarbons can be produced.

n: schlumberger wireline tool that uses a neutron induced GR spectroscopy to determine oil saturation in unkown or fresh formation water, borehole oil fraction and sigma.

n: computer model of a reservoir to predict reservoir behavior and to show production over time, allowing decisions about managing the reservoir to be made. The technique consists of digitizing data from appropriate geologic maps and engineering studies and entering them into a computer program, called the model. The model uses past and present values for each parameter of reservoir behavior.

n: the average temperature within the reservoir, measured during logging, drill stem testing, or bottomhole pressure testing using a bottomhole temperature recorder.