**ANSWERS**

1. What is the MAASP prior to the kick?

with

CSG.TVD : the casing set total vertical depth

FG : formation pressure gradient

MG : Mud pressure gradient

2. What is the mud weight required for killing the well?

with

FP : Formation Pressure

HP : Hydrostatic Pressure of Drilling fluids

SIDPP: Shut in Drill pipe Pressure

MG: Mud weight gradient required to control the well

3. What is the kill rate pressure if pressure stabilize at Pst = 1000 psi at the start of the well kill operation.

with

ICP : Initial circulating pressure

KRP : Kill rate pressure

4. What is the correct value of pressure of choke Pch at the start of the well kill operation

5. What is final circulating pressure?

with

KWM: Kill mud weight

OMW: Original mud weight

6. What is the BHP prior to and after the kick?

6. What is the BHP prior to and after the kick?

7. How many strokes will take the kill mud to reach the bit? How many strokes bit to shoe? Why do we want to know this value?

Mud Pump Out Put

String Volume

Strokes to the bit

Bit to Shoe volume

a ). Volume between Drill collars and open hole

b). Volume between Drill pipe and open hole

**Once the TOP influx
is inside the shoe the MAASP figure is not more valid!**

8. Calculate the influx volume.

With

MG : Mud gradient

GG : Gas gradient

Annular drill collar capacity = 0.0323 bbl/ft

9. Calculate the maximum kill circulation rate based on a mixing capacity of 450lbs/min.

We calculate the amount of barite required for each barrel of mud to weight it from the original mud weight to the kill mud weight.

10. How much barite is required?

11. How much increase in volume would this addition of barite give.

12. Calculate the MAASP after killing the well.

With

FG : Fracture pressure gradient

MG : the new mud weight gradient

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