Exerise 3 Killing Operation Calculations
Whilst drilling the 8 1/2" hole section of a well the mud pit level indicators indicate that the well is flowing. When the well is made safe the following information is collected :
drillpipe pressure = 100 psi
casing pressure = 110 psi
pit gain = 10 bbls
Using this and the information provided in attachment 1 carry out the necessary calculations to determine:
a. the formation pressure and kill mudweight
b. the type of influx
c. the time to kill the well
d. the time to the end of stage 1, 2, and 3 of the killing operation
e. the pump pressure during stages 2, 3, and 4 of the operation
In addition to the above, complete the "kill sheet" in Figure 10 and confirm that the results from the above correspond to the results calculated above.