Reservoir pressure:

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.

Terms Related to Reservoir pressure

• Bottomhole pressure test

  A test that measures the reservoir pressure of the well, obtained at a specific depth or at the midpoint of the producing zone. A flowing ...

• Reservoir drive mechanism

  The process in which reservoir fluids are caused to flow out of the reservoir rock and into a wellbore by natural energy. Gas drives depend ...

• Differential pressure

  The difference between two fluid pressures; for example, the difference between the pressure in a reservoir and in a wellbore drilled in the reservoir, or ...

• Initial shut-in period

  The comparatively short shut-in period following the initial flow period of a drillstem test. This period is followed immediately by much longer flow and shut-in ...

• Pressure, volume, and temperature (pvt) analysis

  An examination of reservoir fluid in a laboratory under various pressures, volumes, and temperatures to determine the characteristics and behavior of the fluid.

• Flood

  1. To drive oil from a reservoir into a well by injecting water under pressure into the reservoir formation. See waterflooding. 2. To drown out ...

• Reservoir

  A porous and permeable underground formation containing an individual and separate natural accumulation of producible hydrocarbons (oil and/or gas) which is confined by impermeable rock ...