Bottom hole pressure

Whenever the fluid level in the hole decreases, the hydrostatic pressure that it exerts also decreases and if the decrease in hydrostatic pressure falls below the formation pore pressure, the well may flow. In most cases, fluids create hydrostatic pressure in both the pipe and annulus. Reservoir fluid does not effect bottom hole pressure when in balance condition but in case of well control situation, if the reservoir fluid is gas, it well effect bottom hole and surface pressure. In such wells, the fill-up volume always exceeds the calculated or theoretical volume of the pipe removed from the well. This gap of fluid movement below the string generates a suction force leading to a bottom hole pressure decrease and allowing the formation fluids to flow into the well. During circulation, the bottom hole pressure equals to the sum of hydrostatic pressure and frictions generated through the circulating system. The aim of oil operations is to complete all tasks in a safe and efficient manner without detrimental environmental effects.

Bottomhole pressure bomb: A pressure-fight container bomb used to record the pressure in a well at a point opposite the producing formation. See bottomhole pressure bomb. Please Wait The increase in bottomhole pressure expressed as an increase in pressure that occurs only when mud is being circulated. A thick-walled container, usually steel, used to hold devices that determine and record pressure or temperature in a wellbore. A bottomhole pressure test that measures pressure after the well has been shut in for a specified period of time.

Related Articles. Bottomhole Pressure Test. A device set in tubing, particular collars, to facilities the landing of pressure bombs recorders. See bottomhole pressure bomb. Latest Articles.