Well Control: Activity 7

1) Mud weight increase required to kill a kick should be based upon: 

a. shut-in drill pipe pressure. 
b. shut-in casing pressure. 
c. original mud weight plus slow circulation rate pressure losses. 
d. shut-in casing pressure minus shut-in drill pipe pressure. 

2) The correct gauge to use for calculating the kill weight mud is: 

a. the gauge on the choke and kill manifold. 
b. the drill pipe pressure gauge on the driller’s console 
c. the casing gauge on the driller’s console 
d. the drill pipe pressure gauge on the remote auto choke panel. 
e. the casing pressure gauge on the remote auto choke panel.

3) A flowing well is closed in. Which pressure gauge reading is used to determine formation pressure? 

a. BOP manifold pressure gauge. 
b. Choke console drill pipe pressure gauge. 
c. Driller's console drill pipe pressure gauge. 
d. Choke console casing pressure gauge.

4) Shut-in casing pressure is used to calculate: 

a. Kill weight mud. 
b. Influx gradient and type when influx volume and well geometry are known. 
c. Maximum Allowable Annular Surface Pressure. 
d. Initial circulating pressure.

5) On a surface stack, what would happen if when bringing the pumps up to kill speed the casing pressure was allowed to fall below shut-in casing pressure?

a. Formation would most probably break down.
b. More influx would be let into the well bore.
c. It would have no effect on anything.

6) Why is a 20 barrel kick in a small annulus more significant than a 20 barrel kick in a large annulus?

a. The kill weight mud cannot be calculated as easily.
b. It results in higher annulus pressures.
c. The kicks are usually gas.
d. The pipe usually gets stuck.

7) A kicking well has been shut-in. The drill pipe pressure is '0' because there is a non-return valve (float) in the string. To establish the SIDPP, what action should be taken?

a. Pump very slowly into the drill pipe with the well shut in. When the pumping pressure stabilizes the float has opened. This pumping pressure is the SIDPP.
b. Bring the pump up to kill rate holding the casing pressure constant by opening the choke. The pressure shown when the pump is at kill rate is the SIDPP.
c. Pump at kill rate into the drill string with the well shut in. When Casing pressure starts to raise, read the pump pressure. This is the SIDPP.
d. Shearing the pipe and reading the SIDPP directly of the casing gauge.

8) The slow circulating rate pressure (SCRP) is being determined by bringing the pump rate up to a pre-determined 30 spm by holding the shut-in casing pressure constant. The well is shut-in with 220 psi shut-in drill pipe pressure. At 30 spm the drill pipe circulating pressure is 1060 psi. Calculate the slow circulating rate pressure.

a. 700 psi           b. 770 psi            c. 800 psi            d. 840 psi

9) To find the initial circulating pressure on a surface BOP stack when the slow pump rate circulating pressure is not known and a kick has been taken:

a. Circulate at desired strokes per minute to circulate out the kick, but hold 200 psi back pressure on drill pipe side with choke.
b. Add 400 psi to casing pressure and bring pump up to kill rate while using the choke to keep the casing pressure +400 constant.
c. Bring pump strokes up to kill rate while keeping casing pressure constant by manipulating the choke. After the hydraulic delay, the pressure shown on the drill pipe pressure gauge is the Initial Circulating Pressure.
d. Add 1,000 psi to shut in drill pipe pressure and circulate out the kick.

10) If, while waiting for kill mud to be mixed, both drill pipe and annulus pressures started to raise, what type of influx does this indicate?

a. Fresh water
b. Salt water
c. Oil
d. Gas

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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