# Well Control Formulas Part 6

This part of well control formulas will demonstrate you more about some equations frequently used in snubbing operation. In Well Control Formulas Part 5, I show just only some snubbing formulas and this part will show the rest of them.

I wish you would enjoy reading my blog post.

Buoyed Weight of Open Ended Tubulars (Wb),lb

For this formula, you just use the buoyancy factor and multiply it with weight of pipe in the air.

Buoyed Weight of Closed Ended Tubulars without fluid in the pipe (Wb),lb

This formula below is different from the 1st formula because it is used for the closed ended pipe. Weight in the air will be subtracted with buoyancy weight of pipe ran in hole.

Note: 24.5 is conversion factor to make the unit in gallon.

Buoyed Weight of Closed Ended Tubulars after filling the pipe (Wb),lb -> in this case, there is different fluid weight in pipe and annular

The Balance Point for closed ended and unfilled pipe is the point where the weight of pipe in the fluid equates to force created by wellhead pressure.

Note:

OR

This is the second case for balance point calculation. The Balance Point for closed ended  pipe and the pipe is filled with fluid.

Maximum Down Force on Jacks

Effective Area of Snubbing Jacks, square inch

Hydraulic Pressure to Snub, psi

### Related Post

Pressure Profile of Drillpipe and Casing Pressure ... This topic will cover about pressure profile both drill pipe and casing pressure while kill a well with wait and weight method.   Drill Pip...
The Deepwater Horizon Got Explosion and Fire ̵... I just saw NEWS from the TV showing The Deepwater Horizon Got Explosion and Fire - 12 People Missing. Read news below. I wish they will find those peo...
Deepwater Horizon Investigation Reports Deepwater Horizon is one of the worst well control incidents in oil and gas industry and this situation results in losing of life and damaging environ...
Kick Tolerance Factor Calculation The following formula is the kick tolerance factor. Where; Casing shoe TVD in ft Well depth TVD in ft Maximum Allowable MW in ppg Cur...
Share the joy
•
•
•
•
•
•
•
•
•