Related Oil & Gas Terms

• Pressure gradient

  1. a scale of pressure differences in which there is a uniform variation of pressure from point to point. for example, the pressure gradient of a column of water is about 0.433 pounds per square inch per foot (9.794 kilopascals per meter) of vertical elevation. the normal pressure gradient in a formation is equivalent to...

• Hydrostatic pressure

  The force exerted by a body of fluid at rest. it increases directly with the density and the depth of the fluid and is expressed in pounds per square inch or kilopascals. the hydrostatic pressure of fresh water is 0.433 pounds per square inch per foot of depth (9.792 kilopascals per meter). in drilling, the...

• Abnormal pressure

  1. pressure exceeding or falling below the normal pressure to be expected at a given depth. normal pressure increases approximately 0.465 psi per foot of depth (10.5kpa per meter of depth). thus, normal pressure at 10,000 feet is 4,650 psi; abnormal pressure at this depth would be higher or lower than 4,650 psi. see pressure...

• Psi/ft

  Abbreviation: pounds per square inch per foot....

• Absolute pressure

  Total pressure measured from an absolute vacuum. it equals the sum of the gauge pressure and the atmospheric pressure corresponding to the barometer (expressed in pounds per square inch)....