In order to get the correct value of drill pipe pressure, you need to have the correct floating bumping procedure. In this section, I will show you how to bump the float correctly.
These following procedures will demonstrate you how to bump the float correctly in order to get SDPP.
The tangential method is the simplest calculation among other directional survey calculations.
The tangential method formulas are listed below;
Tangential Method Calculation formula
The Minimum Curvature Method smooths two straight-line segments of the Balanced Tangential Method by using the Ratio Factor (RF).
The formulas for the Minimum Curvature Method are listed below;
ß must be in radians
I have some directional calculations that I’ve shared with you. However, some of them are not shared yet so I will try to share all directional drilling formulas that may be helpful for you in the future.
Today, I would like to show you about Balanced Tangential Method Calculation. This calculation method treats half of the measured distance (MD/2) as being tangent to I1 and Az1 and the remainder of the measured distance (MD/2) as being tangent to I2 and Az2.
Drilling personnel need to fully understand about the lag time. Lag time is time delay from pressure adjustment made on a choke valve or a choke HCR to show up on the drill pipe pressure gauge.
Does it sound confuse? Let’s me explain more about it. When you adjust a choke position, you will not be able to see changes on the drill pipe gauge right away because drilling fluid is compressible so you need to be patient and wait a little bit until you see the changes on the drill pipe gauge.
