EQUIPMENT EXAM
1) What
is the main reason for using tubing nipples in a completion?
a. to
receive flow control devices.
b. to
reduce well flow.
c. for
depth control of wire-line.
2) From
which direction are down hole safety valves designed to prevent flow?
a. both
above and below.
b. below.
c. above.
3) Which type of closure mechanism
is fitted to tubing retrievable down hole safety valves?
TWO ANSWERS
a. plug
b. sleeve
c. gate.
d. poppet
e. ball
f. flapper
4) What is the primary advantage of
a wire-line retrievable down hole safety valve?
a. can
be retrieved and replaced.
b. can
be installed after running the tubing
c. can
be removed to allow through tubing intervention work.
d. simple
construction.
5) Which of the following statements
about the circulation devices used in a well kill are true?
TWO ANSWERS
a. check
that the pressure rating is adequate for the work to be performed.
b. check
that the tail pipe plug is in place before opening the sleeve.
c. check
the pressure are equalized before opening.
d. check
that the catcher is installed below the sliding sleeve.
e. check that the device is fully open.
6) How is a surface controlled wire-line
retrievable down hole safety valve run in the well in the open position?
a. with a prong on the lock mandrel running tool.
b. with
a locked-in hydraulic pressure.
c. with
an automatic ‘J’ device.
d. with
a lock-open sleeve.
7) If a side packet mandrel is not
in use, what type of valve is installed in the pocket as a positive closure to
flow from either direction?
a. A
circulation valve.
b. a gas
lift valve.
c. a
dummy valve.
d. a
gate valve.
e. a
chemical injection valve.
8) What
is the definition of a permanent packer?
- it can only
be retrieved by milling it out.
- It can be set and retrieved on
wire-line.
- It is fixed to the completion
tubing.
- It is fixed, and can only be
retrieved on the completion tubing.
- It can only retrieved with a
special pulling tool.
9) How
are lock mandrels locked into tubing nipples?
a. on a
NO-GO shoulders.
b. with
elastomeric packing in a polished nipple bore.
c. by
metal to metal seals.
d. with
mandrel locking dogs and matching nipple recesses.
e. with
slips.
f. with
expanding rubber elements in the nipple bore.
10) Why is a down hole safety valve installed?
a. to
prevent production in the accidental event of surface valves being opened.
b. to
shut the well in to allow maintenance to surface equipment.
c. to
shut the well in, in an emergency situation.
d. control
production flow rates.
e. to
shut the well in and stop production.
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?
- By hydraulic control from the
surface.
- It seals off the tubing within
the packer bore.
- In conjunction with the completion tubular it isolates the annulus
from the casing below
the packer and from the tubing bore.
- By being located into a tieback
receptacle.
13) How
do flow control devices seal within the nipple bore?
- With mandrel locking dogs and
matching nipple recesses.
- By metal to metal seals.
- With elastomeric packing in a
polished nipple bore.
- With slips
- With expanding rubber elements
in the nipple bore.
- 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?
- Pull the down hole safety valve
from the nipple.
- Connect the tubing and ‘A’
annulus on the surface.
- Unset the packer.
- 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.
21) Which type of down hole safety
valve has the largest inside diameter for the same completion tubing size?
a.
Ambient
b.
Wire-line
retrievable
c.
Pressure
differential
d.
Tubing retrievable
22) What
is the purpose of a side pocket mandrel?
- To provide a communication path between the tubing bore and the
casing annulus.
- To plug the tubing.
- To be a receptacle for wire-line
safety valve.
- To provide a profile for
landing flow control devices.
23) What
is the primary purpose of a sliding sleeve or sliding side door?
- To provide a communication path between the tubing bore and the
casing annulus.
- To close off the tubing bore.
- To close off the annulus.
24) What
is the primary purpose of a DHSV?
- To provide a communication path
between the tubing bore and the casing annulus.
- To close off the tubing bore.
- To close off the annulus.
25) A well equipped with a flapper
type subsurface safety valve with damaged control line:
- Can be killed by bull-heading and the valve
can be recovered.
- Need coiled tubing to open the
valve.
- Cannot be killed, the valve
needs to be milled.
26) If 20,000 feet of 1.5” coiled
tubing of 1.25” ID was used to acidize a well, the volume of displacement fluid
required to displace acid to CT shoe is:
- 45 bbl
- 30 bbl
- 20 bbl
27) What is the primary reason that
determines the setting depth of a down hole safety valve?
- Prevent accidental penetration
by drilling tools from an adjacent well.
- Prevent deliberate sabotage.
- Below any possible depth where damage could occur to the valve from
surface impact.
- Below catering depth in case of
potential blow out around the casing.
- As close as possible to the
packer to keep the well pressure as deep as possible
- As high as possible to reduce
the inventory of well fluids that may escape above the valve.
28) Which
one of the following statements about the Xmas tree is true?
- Any swab valve can be used to
cut the slick-line.
- Any kill wing valve can be used
to cut the slick-line.
- Some master valves can be used to cut the slick-line.
- Any flow wing valve can be used
to cut the slick-line.
29) What
are the generic types of packers available for completions?
TWO ANSWERS
- Retrievable
- Permanent
- Check valve
- Bridge plug
- Pump through
30) What
is the primary purpose of NO-GO shoulders?
- To take the load o differential
forces across the tools
- To lock mandrels into the
tubing nipples.
- In the bottom of the nipple to
prevent tools from falling out of the tubing.
- To locate lock mandrels to
their particular matching nipples.
31) Where
is the packer normally positioned in the completion string?
- Above, but close to, the top perforations.
- As close to the tubing hanger
as possible.
- Below the perforations.
- Half way between the
perforations and the tubing hanger.
32) What is the first action to take
to re-instate production in a well with a failed tubing retrievable down hole
safety valve?
- Lock the
valve mechanism open and install a wireline insert valve.
- Perform a work-over.
- Lock the valve mechanism open.
34) What are the normal safe
methods of establishing temporary communication between the tubing and annulus
for circulation purposes?
TWO ANSWERS
a. Install a
circulation valve inside a side pocket mandrel.
b. Open the Sliding sleeve door.
c. Use
a tubing punch to punch a hole in tubing.
35) Why is an annulus safety
valve installed?
a.
To
prevent
back flow from the gas filled annulus in a gas lift well.
b.
To close off flow into the annulus.
c.
In place of a tubing safety valve.
36) How does a
Surface Controlled Wireline Retrievable DHSV make hydraulic communication?
a.
Between
2 packing seal stacks, once the lock mandrel is set.
b.
Through an opening on the Sliding
Sleeve.
c.
Through a hydrostatic stab.
37) How does a failed subsurface controlled DHSV
close?
a.
Pressure
decrease in the tubing.
b.
Hydraulic pressure loss in control line.
c.
Malfunctioning communication seals.
