Bottomhole Pressure Test is a test that is done to determine the reservoir pressure of a wellbore. The results can be acquired at a certain level or at a specific depth of the producing zone. There are two main categories of the test, i. When the test is measured during the flowing well, it is known as Flowing Bottomhole Pressure Test whereas if the well is shut for a specific period of time then the test done, it is said to be a Shut-in Bottomhole Pressure Test. The Bottomhole Pressure can be determined by various methods.
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Bottom Hole Pressure Concept | Drilling Course
Well control is the technique used in oil and gas operations such as drilling , well workover and well completion for maintaining the hydrostatic pressure and formation pressure to prevent the influx of formation fluids into the wellbore. This technique involves the estimation of formation fluid pressures, the strength of the subsurface formations and the use of casing and mud density to offset those pressures in a predictable fashion. The aim of oil operations is to complete all tasks in a safe and efficient manner without detrimental environmental effects. This aim can only be achieved if well control is maintained at all times. The understanding of pressure and pressure relationships are important in preventing blowouts by experienced personnel who are able to detect when the well is kicking and take proper and prompt actions. The fluid is any substance that flows; e.
Bottomhole pressure bomb Definition
This online calculator can solve hydrostatic pressure problems by finding unknown values in the hydrostatic equation. The equation is as follows: It states that the pressure difference between two elevations in a fluid is the product of elevation change, gravity, and density. The calculator can solve this equation.
The pressure , usually measured in pounds per square inch psi , at the bottom of the hole. For circulating wellbores, the BHP increases by the amount of fluid friction in the annulus. The BHP gradient should exceed the formation pressure gradient to avoid an influx of formation fluid into the wellbore. On the other hand, if BHP including the added fluid friction pressure of a flowing fluid is too high, a weak formation may fracture and cause a loss of wellbore fluids.