Bottom hole pressure
Bottom Hole Pressure, BHP | definition
The pressure, usually measured in pounds per square inch (psi), at the bottom of the hole. This pressure may be calculated in a static, fluid-filled wellbore with.
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Description:This is often evident when drilling fast because the effective density in the annulus is increased by cuttings. If the rig pump must be used and the pump cannot be easily controlled at low rates, then the leak-off technique must be modified. If pore fluid cannot move out of the way, fracturing and permanent deformation of the formation can occur. Normal circulation[ edit ] During circulation, the bottomhole pressure is equal to the hydrostatic pressure on the annular side plus the annular pressure loss APL.
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Date: 2018-07-27
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