Well Control: Activity 4

1) Pick five (5) situations, from the following list, under which you would consider taking a new SCRP.

a. Every shift.
b. Mud weight changes.
c. Mud property changes.
d. Before and after a leak-off test.
e. After each connection when drilling with top drives.
f. When long sections of hole are drilled rapidly.
g. After recharging pulsation dampeners on mud pump discharge line
h. When returning to drilling after a kick.

2) The following slow rate circulation pressures (SCRP) were recorded. Which one does not seem to be correct?

a. 30 spm = 100 psi
b. 40 spm = 180 psi
c. 50 spm = 400 psi

3) After a round trip at 8,960 ft. with 10.9 ppg mud we kick the pump in and start to circulate. An increase in flow was noticed and the well was shut in with 0 psi on the drillpipe and 300 psi on the casing. What kill mud is required? (There is no float in the drill string).

a. No way of knowing.
b. 11.5 ppg
c. 10.9 ppg
d. 12.0 ppg

4) What was most probable in causing the influx or well kick in the last question?

a. Abnormal pressure was encountered.
b. The mud weight was not high enough to contain formation pressure.
c. It was swabbed in or the hole was not properly filled while pulling out.
d. It is impossible to tell.

5) In which of the following cases would you be most likely to swab in a kick?

a. When the bit is pulled up into the casing.
b. When the first few stands are being pulled off bottom.
c. About halfway up the hole.

6) Which three of the following practices are likely to increase the chance of swabbing?

a. Pulling pipe slowly.
b. Maintaining high mud viscosity.
c. Pulling through tight spots with pump off.
d. Pulling through tight spots with pump on.
e. Pulling pipe quickly.
f. Pumping out of the hole.

7) Which one of the following causes of well kicks is totally avoidable and due to a lack of alertness by the driller?

a. Lost circulation
b. Gas cut mud
c. Not keeping hole full
d. Abnormal pressure

8) In which of the following circumstances would a kick be most likely to occur through failure to fill the hole?

a. When the first few stands are pulled off bottom.
b. When pulling the drill collars.
c. When the drill collars enter the casing.

9) While pulling out of the hole it is noticed that mud required to fill the hole is less than calculated. What action must be taken?

a. Flow check, if negative displace a 100 ft. heavy slug into annulus and continue to pull out of hole.
b. Flow check, if negative run back to bottom and monitor returns.
c. Flow check, if negative continue to pull out of the hole.
d. Shut the well in and circulate hole clean.

10) Which of the following is the first reliable indication that you have taken a kick?

a. Increase in torque.
b. Gas cut mud.
c. Decrease in pump pressure.
d. Increase in flow rate.

11) Which of the following is the first reliable indication that an influx has entered the wellbore?

a. Gas cut mud
b. A drilling break
c. A decrease in pump pressure
d. Gain in pit volume
e. Change in nature of cuttings

NB: We are very thankful to the well control community. We will be very happy to receive your comments or objections for sharing this content. Facebook page Drilling Course , E-mail: drilling.course@gmail.com

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