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Questionary Flashcards

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
Q

Name the purpose of a hydraulic reservoir?

  • store fluid
  • allow fluid to cool
  • reduce turbulent
  • allow entrapped air to escape
  • all of the above
A

•all of the above

26
Q

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
A

•None of the above en lugar de ignition es power

27
Q

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
A

•All of the above

28
Q

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
A

•The electrical signal generated by an overpressure in the triplex pump resets the throttle to idle speed and disengage the trasmission

29
Q

Which two of the following equipment do not remove the solid from the drilling fluid ?

  • degasser
  • desander
  • shale shaker
  • gas separator
  • desilter
A
  • degasser

* gas separator

30
Q

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
A

•Drill collar and drill pipe

31
Q

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
A

• None of the above (to add weight to the bit)

32
Q

What does BOP stand for ?

  • Bit over penetration
  • Barrel on pumping
  • Blow out preventer
  • None of the above
A

•Blow out preventer

33
Q

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
A

•Because it is a quality control measurement of the job

34
Q

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
A

•Measure the change in resonance frecuency of a vibrating tube when fluid is passed throught it

35
Q

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
A

•Calibrating it with water or with a fluid of known density

36
Q

What fluid is in the engine cooling system?

  • 10 weight oil
  • Clean water plus antifreeze
  • Hydraulic fluid
  • A mixture of oil and water
A

•Clean water plus antifreeze

37
Q

When is STEM1 performed ?

  • 6 months or 500 hr
  • Every 100 hr or three months
  • Monthly
  • Before and after every job
A

•Before and after every job

38
Q

What does STEM stand for ?

  • Stable equipment maintenance
  • Standard equipment maintenance
  • Stable equipment management
  • Standard equipment management
A

•Standard equipment maintenance

39
Q

How does emergency kill work ?

  • Cuts the electric power
  • Cuts the air to engine
  • Cuts the diesel to engine
  • Put the trasmission to neutral
A

•Cuts the air to engine

40
Q

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
A

•Check the previous STEM report

41
Q

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
A

•All of these

42
Q

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
A
  • Junction adquisition ( JAB )

* Remote Data Adquisition ( RDA )

43
Q

Name three parameters that NRD can measured ?

  • Density
  • RPM
  • Pressure
  • Flow rate
  • Temperature
  • Voltage
  • Volume
A
  • Density
  • Pressure
  • Flow rate
44
Q

What are the two types of sensor signal do we use?

  • Frequency
  • Direct response
  • Analog
  • Multi response
  • Logarithmic
A
  • Frequency

* Analog

45
Q

What are the three basic parameters we can measure in a basic cement job ?

  • Viscosity of slurry
  • Fluid density
  • Volume
  • Pressure
  • Flowrate
  • Temperature
A
  • Fluid density
  • Pressure
  • Flowrate
46
Q

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
A

•Rheology is the science of the deformation and flow matter

47
Q

Which of these is not a Newtonian fluid ?

  • Diesel
  • Honey
  • Water
  • Milk
A

•Honey

48
Q

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
A

•Pressurized filter press

49
Q

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
A

•To compensate up and down movements of semisumersible platforms due to sea conditions

50
Q

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
A

•All of the above

51
Q

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
A

•Sedimentary rock

52
Q

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

•A reservoir where the hydrocarbun are trapped and prevent from migrating

53
Q

Void space in a rock is referred to as?

  • Porosity
  • Permeability
  • Toughness
  • Young’s modules
A

•Porosity

54
Q

The ability of a fluid to flow throught a porous rock is referred to as ?

  • None of these
  • Porosity
  • Permiability
  • Young’s modules
A

•Permiability

55
Q

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
A

•2111.7 ft3

56
Q

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
A

•all of the above

57
Q

The pressure exerted by a column of fluid is call ?

  • Hydrostatic pressure
  • Applied pressure
  • Differential pressure
  • None of the above
A

•Hydrostatic pressure

58
Q

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
A

•On the third transfer

59
Q

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
A

•4 times

60
Q

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
A

•All of the above

Daniel (15 decks)

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