دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

the rate at which pressure builds up after a flow period. It is related to permeability, fluid viscosity, pressure differential, hole volume, zone thickness and time.

n: a logarithmic plot of bottornhole buildup pressure versus time. Pressure buildup plots are useful in analyzing formation test data for values used in calculating reservoir permeability, formation damage, radius or investigation during the formation test, reservoir depletion, and permeability barriers and other flow irregularities near the wellbore.

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: an interval during which a well is shut in to allow pressure buildup while pressure behavior is being measured during a formation test.