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Questionary Flashcards

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1
Q

Why is acceptable to close a valve in the discharge line of a centrifugal pump ?

  • Because it’s necessary to control the rate of the discharge of a C-pump
  • Because of the space between the impeller and the wear plates
  • Because it’s a positive displacement pump
A

•Because of the space between the impeller and the wear plates

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2
Q

Name de steps of a complete compressor cycle ?

  • Intake-compression-explosion-expansion
  • Intake-compression-unloading
  • compression-unloading-expansion
  • compression-explosion-unloading
  • None of the above
A

•Intake-compression-unloading

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3
Q

Which of the following are components of a neumatic system ?

  • Unloader
  • Compressor
  • Governor
  • Dryer
  • All of the above
A

•All of the above

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4
Q

What is pore pressure ?

  • The pressure exertedover the walls of the rock pores during a frac
  • The bottomhole flowing pressure
  • The presure exerted by the formation fluids on the wall of the rock pores
  • Hydrostatic mud pressure excerted over an specific point into the formation
  • None on these
A

•The presure exerted by the formation fluids on the wall of the rock pores

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5
Q

What are the applications of a low pressure, high volume air system on a dowell ?

  • Air cylinder
  • Bulk plant
  • Chain case lubrication pump
  • Air starters CPS361
  • Alemite lubrication pump
A

•Bulk plant

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6
Q

What is the main purpose of a triplex pump ?

  • To allow the movement of fluids under pressure
  • To convert electrical energy in mechanical energy
  • To convert mechanical energy in fluid energy
  • All of the above
A

•To convert mechanical energy in fluid energy

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7
Q

What is the function of the chain case ?

  • Lubricate the power end
  • Links the power end with the fluid end
  • Links the prime mover with the triplex pump
  • The mechanic in charge of truck movement
A

•Links the prime mover with the triplex pump

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8
Q

The triplex’s power end recommended oil is ?

  • SAE 20-50
  • SAE-50 WEIGHT
  • SAE-90 WEIGHT
  • SAE –30-70
A

•SAE-90 WEIGHT

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9
Q

The recommended oil to be used to lubricate the packing is ?

  • SAE-30 WEIGHT (40)
  • SAE-10 WEIGHT
  • SAE -20 WEIGHT
  • Hydraulic Oil
A

•SAE-30 WEIGHT (40)

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10
Q

Identify the main parts of a triplex pump ?

  • The fluid end, the chain case and the trasmision box
  • The power source, the trasmision box, and the power end
  • The power end, the fluid end, and the chain case
  • None of these
A

•The power end, the fluid end, and the chain case

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11
Q

Which statement is correct for the type of impeller?

  • Open impeller pump give high rate & high pressure ischarge
  • Close impeller pump give high pressure & low rate discharge
  • Close impeller pump give high rate & low pressure discharge
  • Open impeller pump give high pressure & low rate discharge
A

•Close impeller pump give high pressure & low rate discharge

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12
Q

What are the applications of a low pressure, high volume air system on a dowell unit ?

  • Air cylinder
  • Bulk plant
  • Chase case lubrication pump
  • Air starterts CPS361
  • Alemite lubrication pump
A

•Bulk plant

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13
Q

How can you detect if the C-pump is clockwise ( CW ) or clouter clockwise ( CCW ) rotation without open te case or dissasembly the motor ?

  • Observing the packing
  • Matching to a similar impeller stored in the warehouse
  • Observing the impeller the from the discharge side
  • Observing the impeller the from the top of the driving shaf
A

•Observing the impeller the from the top of the driving shaf

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14
Q

What is the working pressure and rate for the RA56 pump ?

  • 55 psi . 6.5 bpm
  • 45 psi , 12 bpm
  • 75 psi , 8.5 bpm
  • 55 psi, 20 bpm
  • 125 psi , 20 bpm
A

•55 psi, 20 bpm

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15
Q

What is the right meaning of the numbers in the RB 2 X 3 X 11 nomenclature ?

  • 2 in discharge, 3 in suction , 11 in shaft
  • 2 in discharge, 3 in suction , 11 in impeller
  • 2 in discharge, 3 in suction , 11 in volute
  • 2 in volute , 3 in discharge , 11 in casing
  • 2 in suction, 3 in discharge , 11 in volute
A

•2 in discharge, 3 in suction , 11 in impeller

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16
Q

Why should a discharge hose no be used a suction hose ?

  • due to safety reason podría ser, pero se acerca más la otra
  • due to high friction
  • because the hole will collapse
  • none of the above
A

•because the hole will collapse

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17
Q

What is the maximun recommended rate through a 4” discharge hose ( with water ) is 7bpm

  • 5-10 bpm
  • 12-14 bpm
  • 8-10 bpm
  • none of the above
A

•8-10 bpm

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18
Q

What is the maximum pressure of a FMC butterfly valve ?

  • 175 psi
  • 100 psi
  • 200 psi
  • 50 psi
  • none of above
A

•175 psi

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19
Q

What cause the “ water hammer effect “ ?

  • A hydraulic effect induced by the opening of a valve suction at low flow rate
  • A vibrating effect induced by the triplex pump
  • A sudden increase of pressure induced by the close of a suction valve at high rate*
  • The lose of discharge pressure induced by cavitation problem
  • None of the above
A

•A sudden increase of pressure induced by the close of a suction valve at high rate*

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20
Q

Which of the following statements are true in dowell convoy police ?

  • The convoy speed is determinated by the fastest vehicle
  • Each vehicle is assigned to a particular place in the convoy and must remain in the place
  • All vehicle assigned to a job should leave base when ready and meet each other in a pre-fixed reunion point to continue as convoy from there on
  • All of the above
A

•Each vehicle is assigned to a particular place in the convoy and must remain in the place

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21
Q

What are the responsibilies of SS or FE in charge of the job ?

  • Meet allclient’s objectives on location
  • Final check of job design
  • Logistic and mobilization of equipmet
  • Final check of the equipment and material required
  • All the above
A

•All the above

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22
Q

Which of the following function ( s ) is performed by the hydraulic fluid ?

  • Supply the power through flow under pressure
  • Lubricate system component
  • Remove heat ( through convection )
  • Transport contaminants through filtration system
  • All of the above
A

•All of the above

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23
Q

Which of the following are components in a hydraulic system ?

  • PSI Gauge
  • Hydraulic tank with filter
  • Hydraulic motor
  • Hydraulic pump
  • all of the above
A

•all of the above

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24
Q

Should the hydraulic reservoir be filled to the top, explain you answer ?

  • yes, so you always have enough
  • no, due to thermal expansion of oil the fluid would overflow the reservoir
  • yes, because you have to maintain full pressure
  • yes, because the gauge may not read correct level to tank
A

•no, due to thermal expansion of oil the fluid would overflow the reservoir

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25
Name the purpose of a hydraulic reservoir? * store fluid * allow fluid to cool * reduce turbulent * allow entrapped air to escape * all of the above
•all of the above
26
Which of the following is an engine four stroke cycle ? * Intake – compress- intake- compress * Intake – compress- discharge – intake * Intake – compress- Ignition – exhaust, * None of the above
•None of the above en lugar de ignition es power
27
What is the main advantege (s ) of a diesel engine in comparison with gasoline engine ? * Durability * Low operating cost * Lower cantaminant emission * Global fuel compatibility * All of the above
•All of the above
28
How does the over –pressure shut down device function ? * The electrical signal generated by an overpressure in the triplex pump disengages the chain case * The electrical signal generated by an overpressure in the triplex pump resets the throttle to idle speed and disengage the trasmission * The electrical signal acts on an actuator which opens a high presure relief valve * The electrical signal switchs on a claxon which advice the operator to disengage the pump * none of the above
•The electrical signal generated by an overpressure in the triplex pump resets the throttle to idle speed and disengage the trasmission
29
Which two of the following equipment do not remove the solid from the drilling fluid ? * degasser * desander * shale shaker * gas separator * desilter
* degasser | * gas separator
30
Which of the following does not belong to the rotary system ? * Drill collar and drill pipe * Rotary table * Rotary hose, si pertenece, * Swivel * Kelly and kelly bushing
•Drill collar and drill pipe
31
What is the function of the drill collar in the drill string ? * To direct the bit * To add weight to the string * To prevent blow out * None of the above
• None of the above (to add weight to the bit)
32
What does BOP stand for ? * Bit over penetration * Barrel on pumping * Blow out preventer * None of the above
•Blow out preventer
33
Why is accurate density measurement important to the success of a cement job ? * Because we charge for it * Because it is a quality control measurement of the job * If we don not mix at the right density, the company man will not sign the invoice an the job is considered as a MOF * Because we can minimise the utilization of cement during the job by mixing the slurry at the right density
•Because it is a quality control measurement of the job
34
How does the Non Radio Active Densistometer (NRD)work in a measuring the density ? * Measure the change in resonance frecuency of a vibrating tube when fluid is passed throught it * Sense the resistance of change in flow direction when fluid flows throught a vibrating tube * Measured the twist of the tube inside the NRD * Monitors the voltage that is generated when a fluid flos throught the tube
•Measure the change in resonance frecuency of a vibrating tube when fluid is passed throught it
35
How do you check that mud balance is accurate ? * Sending it to manufacture for proper check up * Comparing its reading to an NRD one, because NRD is more reliable * Calibrating it with water or with a fluid of known density * By running an ultrasonic and dimensional test to make sure that the balance present its original spec
•Calibrating it with water or with a fluid of known density
36
What fluid is in the engine cooling system? * 10 weight oil * Clean water plus antifreeze * Hydraulic fluid * A mixture of oil and water
•Clean water plus antifreeze
37
When is STEM1 performed ? * 6 months or 500 hr * Every 100 hr or three months * Monthly * Before and after every job
•Before and after every job
38
What does STEM stand for ? * Stable equipment maintenance * Standard equipment maintenance * Stable equipment management * Standard equipment management
•Standard equipment maintenance
39
How does emergency kill work ? * Cuts the electric power * Cuts the air to engine * Cuts the diesel to engine * Put the trasmission to neutral
•Cuts the air to engine
40
Before doing to STEM 1 on a units it is important to ? * Check the previous STEM report * Check is the unit is green tagged * Check is the headlights are working * Ask the mechanic to do a full check
•Check the previous STEM report
41
A pre-trip inspections ensure …. ? * Safety inspection has been performed * Unit is safe to drive * Requirement are in compliance with the goverment regulation for a country * All of these
•All of these
42
# Choose two types of adquisition boxes are use in Dowell ‘s adquisition package ? * Junction adquisition ( JAB ) * Remote Data Adquisition ( RDA ) * Micro-motion chip box * UPS electrical stabilizer * None of the above
* Junction adquisition ( JAB ) | * Remote Data Adquisition ( RDA )
43
Name three parameters that NRD can measured ? * Density * RPM * Pressure * Flow rate * Temperature * Voltage * Volume
* Density * Pressure * Flow rate
44
What are the two types of sensor signal do we use? * Frequency * Direct response * Analog * Multi response * Logarithmic
* Frequency | * Analog
45
What are the three basic parameters we can measure in a basic cement job ? * Viscosity of slurry * Fluid density * Volume * Pressure * Flowrate * Temperature
* Fluid density * Pressure * Flowrate
46
What is the definiotn of rheology ? * Rheology is the science of the deformation and flow matter * Rheology is the science of the deformation and viscosity of the matter * Rheology is the science of the viscosity and flow of matter * None of these
•Rheology is the science of the deformation and flow matter
47
Which of these is not a Newtonian fluid ? * Diesel * Honey * Water * Milk
•Honey
48
Which of the following is not use to obtain rheological properties of the fluids to characterize them ? * Pressurized filter press * Coaxial Cylinder viscosimeter * Fann 35 * Fann 50 * Marhs funnel
•Pressurized filter press
49
What is the motion compensator used for ? * To compensate casing elongations due to change in temperature * To compensate lateral movements of a semisumersible platforms due to sea conditions * To compensate up and down movements of semisumersible platforms due to sea conditions * None of the above
•To compensate up and down movements of semisumersible platforms due to sea conditions
50
In the following list , which items are speciallized offshore equipment ? * Subsea BOP * Marine Riser * Motion compensator * EXPRESS cement head está medio raro, algunos títulos dicen que si, pero algunos diagramas dicen que tmb se utiliza en tierra * All of the above
•All of the above
51
What is the type of the rock that make up 70 % on the earth’s surface ? * Sedimentary rock * Igneous rock * Salt * Metamorphic rock * Calcareous rock
•Sedimentary rock
52
What is a petroleum trap ? * A type of formation where the oil can flow throught to another formation * A lagoon deep in the earth * A reservoir where the hydrocarbun are trapped and prevent from migrating * All of the above
•A reservoir where the hydrocarbun are trapped and prevent from migrating
53
Void space in a rock is referred to as? * Porosity * Permeability * Toughness * Young’s modules
•Porosity
54
The ability of a fluid to flow throught a porous rock is referred to as ? * None of these * Porosity * Permiability * Young’s modules
•Permiability
55
What is the volume required to displace 7” 23 lbs/ft casing to 9555 ft ? * 500.7 bbl * 2111.7 ft3 * 1500.8 ft3 * 405.6 bbl * None of the above
•2111.7 ft3
56
What do you have to take into consideration when calculating the hook load ? * weight of the pipe in air * buoyancy force * weight on packer * all of the above * none of the above
•all of the above
57
The pressure exerted by a column of fluid is call ? * Hydrostatic pressure * Applied pressure * Differential pressure * None of the above
•Hydrostatic pressure
58
When dry blending additives, when should a sample be collected ? * At any time , as a random sample * First transfer * At the end of the whole blend * On the third transfer
•On the third transfer
59
When blending additives in the bulk plant, how many transfer should the operator perform ? * At least 3 times * As many as possible * Maximun three time * 4 times
•4 times
60
Which of the following additional safety equipment should be use when operating or working in a bulk plant ? * Face shield , rubber gloves * Ear plugs, safety boots, safety glasses * Chemical goggles, dust mask * All of the above
•All of the above
Daniel
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