IWCF Principles.& Procedures Test Paper (Questions)Doc

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PRINCIPLES & PROCEDURES TEST PAPER TO OBTAIN PERCENTAGEMARKS SCORED ÷ MAX. POSSIBLE SCORE x 100

Surface Supervisors Surface Drillers

- Max. possible score = 193 - Max. possible score = 182

Surface Supervisors Surface Drillers

- Max. possible score = 203 - Max. possible score = 192

Max .Score

PRINCIPLES & PROCEDURES TEST PAPER

x100 =

%

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17)

If losses occur, how far theoretically could the fluid level drop before the well is under balanced? The overbalance is 240psi. The mud weight is 12.4ppg. feet

18)

19)

20)

2 Points

There are a number of early signs that may indicate that formation pressure is increasing. List below four of these indicators. (1) (2) (3) (4)

4 Points

Equivalent Circulating Density is a down hole pressure that can be affected by which of the following factors? (a) Hole depth (b Mud weight (c) Size of drill pipe (d) Size of hole (e) All of the above will affect the E.C.D. (f) B is the only factor that will affect the E.C.D.

3 Points

If the mud being displaced when tripping in is considerably less than the trip sheet schedule. Then: (a) An influx is beginning to migrate. (b) Losses are occurring. (c) The well is flowing. (d) Shut the well in and assess the recorded pressures

3 Points


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21)

22)

23)

Kicks that occur whilst drilling from high permeable formations will usually be detected, by: (Select 2 answers) (a) A change in the rate of penetration (b) A reduction in rotary torque (c) An increase in pit level (d) A significant increase in pump pressure

4 Points

In order to minimize well-control problems while tripping it would be good practice to: (Select 2 answers) (a) Ensure all B.O.P. components have been tested at least once a week (b) Use a mud weight that exerts at least 200 to 400psi overbalance. (c) Ensure the hole is kept full of mud while tripping (d) Monitor the mud returns (Volume) while tripping in (e) Ensure the hole takes the correct amount of mud while, tripping out.

4 Points

A deviated well has a M.D. of 14500ft (T.V.D. 9000 ft) The well is shut in on a kick that occurred whilst drilling. The stabilized shut-in pressures are SIDPP = 468psi SICP = 530psi What mud weight increase will be required to balance formation pressure? Answer =

24)

ppg

Which of the following would be recommended when" connection gas" is noted?( Select 2) (a) W Increase the mud weight. (b) Increase the mud viscosity. (c) Control the Rate of Penetration. (d) Increase weight on bit.


3 Points

4 Points

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25)

FOR SUPERVISORS ONLY Refer to the Data sheet. If the 12.4ppg mud gives an overbalance of 240psi. When tripping out, what is the maximum volume that could be swabbed in below the bit before losing the overbalance? Assume the influx gradient is.0.12psi/ft. barrels

26)

What mud weight would be required to balance a formation pressure of 7987psi at 12000 feet? ppg

27)

3 Points

3 Points

Kicks are normally circulated out of a well with a slow pump speed. List below four reasons for. This. (1) (2) (3) (4) 3 Points

28)

How often in a shift should Slow Circulating Rates be taken? List four example. (1) (2) (3) (4) 4 Points

29)

Background gas is an indication that: (a) The well is under balanced and should be shut-in (b) The formations being drilled contain gas (c) The mud weight should be increased to prevent further problems 3 Points


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30)

While recording slow circulation rate pressures the gauges used would be: (a) The drill pipe gauge on the drilling console (b) The drill pipe gauge on the choke panel (c) The drill pipe gauge on the standpipe manifold (d) The gauge on the choke manifold 3 Points

31)

Kil1 speed will be selected based on which of the following (a) The collapse pressure of the casing (b) The total mud volume of the well bore (c) The capacity of th~1P9~r'6:oyJde2gasser (d) The capacity of the vacuum de-gasser 3 Points

32)

Kill mud weight is determined by: (a) (SIDPP x TVD ÷ 052) + Mud wt in use (b) (SIDPP ÷ TVD ÷ 052) + Mud wt in use (c) (SIDPP ÷ MD ÷ 052) + Mud wt in use 2 Points

33)

The maximum allowable annular surface pressure (MAASP): (a) Is the pressure that if exceeded on the drill pipe gauge while the influx is still in the open hole section will induce losses to the formations. (b)

Is the pressure that must not be exceeded on the choke gauge at any time during the kill operation.

(c)

Is the pressure that if exceeded on the choke gauge :while the influx is still in the open hole section will induce losses to me formations

(d)

Is defined as the pressure difference between the total applied pressure on the formations below the casing shoe and the collapse pressure of the casing..


3 Points

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34)

Refer to the Data sheet. If a Leak Off Test was carried out when using a 10.3ppg mud, and the applied, surface pressure that leak-off occurred at was 1580psi. (a) What is the Formation breakdown pressure at the Shoe? psi (b)

(c)

35)

3 Points

What is the Maximum Mud Weight that can be used without incurring losses? psi

3 Points

psi

3 Points

What is the MAASP with the current mud?

Referring to the question above, if the current mud weight was increased throughout the system. Would MAASP: (a) Increase (b) Decrease (c) MAASP never changes. 2 Points

36)

MAASP should be recalculated: (a) Each shift. (b) Every 500 feet drilled. (c) Every Mud weight change. (d) When in a transition zone. (e) All of the above. 3 Points

37)

MAASP, (the value calculated) is only relevant. In the open hole section. (Assume the influx is gas) TRUE or FALSE


2 Points

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38)

Which of the following practices are recommended for significant Drilling Breaks? (a) Shut-in and record pressures. (b) Stop drilling, pull back to the shoe and flow-check. (c) Increase pump speed and reduce weight on bit. (d) Stop drilling and flow-check. 2 Points

39)

If the well started to flow \while tripping out of the hole, the recommended practice would be to…… (a) Run back to bottom and condition mud. (b) Pump a heavy slug of mud to balance the U-tube effect. (c) Shut-In and Observe. 2 Points

40)

Assume that 9 5/8' Casing is being run. If the last 10 joints are not filled with mud, and if the non-return valves at the shoe/collar failed, what would the reduction in Bottom Hole pressure be? Length of 1 joint of casing = .47feet Capacity of Casing = 0.0744bbls/ft Casing! Annular capacity = 0.0622bbls/ft Mud weight = 12.4ppg (a) 250psi (b) 148psi (c) 270psi 3 Points

41)

FOR SUPERVISORS ONLY: Refer to the Data sheet. If two barrels of gas is swabbed in at the bottom of the hole and it goes unnoticed, what would it’s expanded volume be when the top of the gas is circulated to the casing shoe? Assume formation pressure at 12000' is 7288psi. barrel


3 Points

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42)

Connection Gas or an Increase in connection gas levels indicate: (a) That formation pressures are increasing. (b) That formation pressures are reducing. (c) That bottom hole pressure is increasing 2 Points

43)

On a Surface installation while drilling, if the well flows, indicate the sequence of events in order of priority in the boxes below, from the choice of statements (a) to (g). (a) With the remote choke open. Pull up and space-out drill string (b) With the remote choke closed, pull up and space-out drill string (c) Close the choke (d) Close the preventer (e) Open the HCR valve (f) Close the manual HCR (g) Stop the Pumps 1 2 3 4 5 A Soft Shut -In A Hard Shut -In

44)

5 Points

Which of the following factors will affect the shut-in drill pipe pressure when a vertical well is shut-in with the pit near bottom? (a) The annular capacity around the collars or pipe. (b) The Volume of the Kick fluid. (c) The type of Kick fluid. (d) The formation pressure (e) All of the Above 2 Points


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45)

Which of the following factors will affect the shut-in Casing pressure' when a well is shut-in with the bit near bottom?' (a) The annular capacity around the collars and pipe. (b) The volume of the Kick fluid. (c) The type of Kick fluid. (d) The formation pressure. (e) All. of the above. 3 Points

46)

With the well shut-in, pressures must be observed and recorded. The gauges that should be used are those on: (a) The driller's console. (b) The choke manifold. (c) 'The Choke panel. (d) The BOP panel. 2 Points

47)

With the well shut-in, drill-pipe and casing pressures took approximately 4 minutes to stabilize. Would the formation that was depleting be described as: (a) A good Permeable formation (b) A poor permeable formation. (c) An impermeable formation. 2 Points

48)

Initial Circulating Pressure is the term used to describe: (a) The choke pressure when the pump has reached Kill rate. (b) The dril1 pipe pressure when the pump has reached kill rate. (c) The drill pipe pressure when kill mud is at the Bit. 2 Points


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49)

If the well is shut-in with a float in the string, shut-in drill pipe pressure can be determined by: (a) Bringing the pump up to kill rate while maintaining drill pipe pressure. (b) Pumping slowly into the drill pipe until the drill pipe pressure stabilizes 2 Points

50)

Assume that the well is shut-in and the stabilized shut-in pressures are 500psi the Drill pipe (SIDPP) and 700psi on the casing (SICP). What Kill Mud is required to balance these pressures? ppg


2 Points

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51)

If the Influx volume is 11 barrels and assuming it is around the drill collars when the well is shut-in. Is the influx: (a) Gas (b) Oil (c) Water 3 Points

52)

If after 35 minutes from shutting, the well in, the stabilized pressures in question 50 both increased by 225psi .How far has the bottom of the influx migrated? Ft.

53)

FOR SUPERVISORS ONLY How much mud would have to be bled off from the annulus to bring drill pipe pressure back to 500psi? bbls

54)

2 Points

2 Points

With drill pipe pressure at 500psi what ICP and FCP if the kill rate is 30SPM? (a) ICP 2 Points (b)

FCP 2 Points

55)

Use your pre-filled kick sheets to answer the following questions: (a) How many strokes are required to pump from surface to bit? Strokes (b)

How many strokes are required to pump from the bit to the casing shoe? Strokes

(c)

2 Points

2 Points

How long will it take to pump from the bit to surface? Hrs/min


2 Points

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(d)

What is the volume of mud from the casing shoe to surface? bbls

(e)

(f)

56)

What is the psi/stroke reduction from ICP to FCP? Psi/stk

2 Points

psi

3 Points

What is the MAASP with kill mud at surface?

The kill operation is restarted by holding a constant casing pressure as the pump is brought up to 30 SPM. 1000 strokes of kill mud has been pumped. What is the minimum pressure that should be seen on the drill pipe gauge at this stage? psi

57)

3 Points

FOLLOWING QUESTIONS 57 - 62 ARE FOR SUPERVISORS ONLY If the pump speed was increased from 30 to 35spm, what is the minimum pressure that should be seen on the drill pipe gauge when 1005 strokes of kill mud have been displaced? psi

58)

2 Points

3 Points

Assume the pump rate has been brought back to 30 SPM. The pressure on the drill-pipe gauge reads 600 psi. 2100 strokes of kill mud have been displaced. Should the choke operator: (a) Open the choke a little. (b) Close the choke a little. (c) Leave it as it is 2 Points


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59)

Final Circulating Pressure is being held constant on the drill-pipe gauge. The pump is running at 30 SPM. 2500 strokes of kill mud have been pumped. A small Pit-gain has been noted at the mud pits. What is happening to the pressure at the top of the influx? (a) It should be increasing. (b) It should be decreasing. (c) It should be staying roughly the same. 2 Points

60)

After pumping 3500 strokes a leak occurs on the discharge side of the pump. The pump speed has been kept constant at 30 SPM. The choke has not been adjusted. Will bottom hole pressure be: (a) Increasing (b) Decreasing (c) Unaffected. 4 Points

61)

Referring to the question above, if instead of shutting the well in and repairing the pump, the pump speed was increased to bring drill pipe pressure back up to final circulating pressure, would bottom hole pressure be: (a) Constantly reducing. (b) Staying roughly the same. (c) Constantly increasing. 4 Points

62)

With Kill mud at surface, what is the MAASP. psi


3 Points

IWCF Principles.& Procedures Test Paper (Questions)Doc

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