Well Completion Quiz # 2

11) Which of the following down hole safety valves are surface controlled?

TWO ANSWERS

a.       Differential pressure valves.

b.      Flapper valve.

c.       Wire-line retrievable valves.

d.      Tubing retrievable valves.

e.       Automatic valve

f.       Ambient pressure valves.

g.      Ball valve.

12) How does a packer create the annulus/tubing seal?

1. By hydraulic control from the surface.
2. It seals off the tubing within the packer bore.
3. In conjunction with the completion tubular it isolates the annulus from the casing below the packer and from the tubing bore.
4. By being located into a tieback receptacle.

13) How do flow control devices seal within the nipple bore?

1. With mandrel locking dogs and matching nipple recesses.
2. By metal to metal seals.
3. With elastomeric packing in a polished nipple bore.
4. With slips
5. With expanding rubber elements in the nipple bore.
6. On no-go shoulders.

14) How would circulation be established if a sliding side door could not be opened for circulation purposes in a completion?

1. Pull the down hole safety valve from the nipple.
2. Connect the tubing and ‘A’ annulus on the surface.
3. Unset the packer.
4. Make a hole in the tubing with a tubing punch.

15) How are well fluids prevented from entering the annulus from the tubing , if a side pocket mandrel is used for gas lifting or chemical injection?

a. by differential pressure.

b. by check valves in the gas lift valves.

c. by venture effect across the port.

16) How are sub-surface controlled down hole safety valves operated?

TWO ANSWERS

a. by ambient pressure.

b. by differential pressure.

c. by hydraulic pressure.

d. by a fall in the temperature of the well bore fluid.

e. by a rise in the temperature of the well bore fluid.

17) Which of the following statements about Xmas tree valves are true?

TWO ANSWERS

a. after closing , a manual valve should be backed out a part of a turn.

b. it is necessary to close the valve as tightly as possible.

c. counting the turns while operating the valve can show if there is an obstruction at the valve.

d. all valves take 24 turns to open or close.

e. the indicator shows how many turns are still required to fully close the valve.

18) Where is a sliding sleeve normally positioned when used as a circulating device?

      a.   Immediately above the packer

      b.   Below the packer in a single zone completion.

      c.   between packers for individual zone production.

19) Which of the following statements about hangers are true?

TWO ANSWERS

a.       It allows communication from inside the completion to the completion annulus through control line ports.

b.      There is usually a place for a plug inside the hanger body.

c.       It supports the weight of the top of the completion.

d.      It supports the weight of the completion and top string of casing.

e.       It allows communication into the completion annulus through the control line.

20) What is the primary purpose of a packer in producing a well?

a.       To retain completion fluid in the annulus.

b.      To anchor the bottom of the tubing

c.       To support tubing weight

d.      To enable the completion annulus to be isolated.