PETE 4045 - Quizzes Comp.
What is the hydraulic horsepower developed by a pump having a flow displacement of Fp = 6.03 gal/stroke, when running at80 spm and 5360 psi? (Volumetric Effic.= 100%) A) 1509 hp B) 1131 hp C) 1980 hp D) not enough data
A) 1509 hp
A typical land rig crew includes: A) A rig superintendent or tool pusher, driller, assistant driller, derrick man, rotary helpers. B) Company representative, mechanic, electrician. C) Both of the above D) None of the above
A) A rig superintendent or tool pusher, driller, assistant driller, derrick man, rotary helpers.
The Hoisting system consists of the substructure, the --- or ---, the draw works, the ---, and the ---. A) Derrick or mast; blocks; drilling line B) Traveling block or crown block; hook; swivel. C) Kelly or Top Drive; swivel ; hook D) All of the above
A) Derrick or Mast; Blocks; Drilling Line.
Which Application is Best for Using Gaseous Drilling Fluids? A) Pf = 0 (dry rocks) B) Pf > Pw (underbalanced drilling) C) Pf< Pw (overbalanced, conventional drilling) D) None of the above.
A) Pf = 0 (dry rocks)
What are the four major systems used on all rotary drilling rigs? A) Power system, hoisting system, rotating system, circulating system. B) Communicating system, drilling system, safety system, transportation. C) Drilling system, maintenance system, marine system, HSE system D) None of the above
A) Power system, hoisting system, rotating system, circulating system.
A leak-off test is performed after ........................., to determine .................. A) cementing the casing / fracture pressure B) drilling to the next casing depth/ fracture pressure C) cementing the casing/ pore pressure D) drilling to the next casing depth / pore pressure E) cementing the last casing / casing leaks
A) cementing the casing / fracture pressure
______________are specified for deeper, hotter and higher pressure well conditions. A) class G&H B) class B&C C) class D&E D) class A&F E) none of the above
A) class G&H
One of the following mud properties is responsible for suspending the drill cuttings. Which one is the correct answer? A) gel strength B) mud density C) yield strength D) mud viscosity E) pH of mud
A) gel strength
If water is trapped in the sediments, what supports the weight of the new sediments (grains and water = overburden), above these sediments? A) pore fluid B) contact between grains C) the effective vertical stress D) none of the above
A) pore fluid
In zonal isolation, ___________should be considered to insure good isolation. A) pressure and temperature changes during the well life B) well depth C) mud cake thickness D) casing size E) all of the above
A) pressure and temperature changes during the well life
Bentonite mixed with water produces cement slurry with ___________ greater than water? A) viscosity B) density C) salt concentration D) all of the above E) none of the above
A) viscosity
Is it possible to predict the pore pressure, fracture gradient and mud weight versus depth? A) yes B) no
A) yes
Determine the input power needed to deliver hydraulic horsepower of 950 hhp if thepump has an efficiency of 95%. (Answers are rounded to the nearest whole number). A) 990 hp B) 1000 hp C) 570 hp D) 633 hp E) 903 hp
B) 1000 hp
If the driller removes 10 stands of triples (7.0 bbl steel displaced from the well), what is the height of drilling fluid expected to fall, given the following capacities:Cwell = 0.0702 bbl/ftPipe Displacement = 0.00545 bbl/ft A) 200ft B) 108ft C) 75ft D) 90ft E) None of the above
B) 108ft
What will be the hydrostatic wellbore pressure at the surface casing shoe when finish drilling the intermediate hole section? A) 1674 psi B) 2366 psi C) 5389 psi D) 7615 psi
B) 2366 psi
What is the correct sequence of drilling fluid travel through components of the Circulating System? (1) drill string, (2) flowline, (3) annular space, (4) mud pumps, (5) top drive, (6) mud tanks, (7) stand pipe, (8) (9) shale shakers. A) 4-8-3-2-5-1-7-6-9 B) 6-4-7-5-1-8-3-2-9 C) 6-4-2-5-8-1-3-7-9 D) 6-2-4-5-1-7-3-8-9 E) none of the above
B) 6-4-7-5-1-8-3-2-9
Which of the following is not a component of a power system? A) Generator B) Substructure C) Prime Mover D) Mechanical or Electric Drive
B) Substructure
What is the primary purpose of the blocks and drilling line? A) To provide a means of moving equipment on the rig floor. B) To support the load of pipe in the derrick or mast as the pipe is lowered into or withdrawn from the hole. C) To support the substructure and derrick D) All of the above
B) To support the load of pipe in the derrick or mast as the pipe is lowered into or withdrawn from the hole.
If we are tripping out of the hole and the mud volume needed to fill up the hole is less than calculated, this is a positive indicator of: A) a massive fluid loss in the well B) a kick in progress C) a broken drill string D) a probable leak in the drill string E) none of the above
B) a kick in progress
The secondary method (or action) to control a well, if the primary one fails is: A) pump a barite pill ( heavy pill) B) close the BOP C) start pumping a killing fluid D) consult the rig well control manual E) investigate the causes of the primary control failure
B) close the BOP
The pressure profile bounded by formation pressure and fracture pressure is called: A) operational range B) drilling margin / window C) overburden D) fracture gradient
B) drilling margin / window
During the planning of a well, is it irrelevant to identify drilling hazards such as lost circulation zones, depleted formation, base freshwater aquifer, stuck pipe zone. A) true B) false
B) false
It is always necessary to have an intermediate casing A) true B) false
B) false
The Drawworks of a drilling Rig is part of one of the following function: A) rotary B) hoisting C) pumping D) well control E) primary power
B) hoisting
When circulating, the ECD due to friction ____________ the pressure at the hole bottom in comparison to static condition (no circulation) A) decreases B) increases C) does not effect D) isolates
B) increases
The higher the gas kick gain volume, the higher the observed values of both SIDPP and SICP. A) yes B) no C) sometimes D) not enough data to answer
B) no
The __________ protects fresh-water tables from mud and hydrocarbons, supports BOP and supports the rest of casing strings. A) conductor pipe B) surface casing C) production casing D) liner hanger E) well head F) Christmas tree
B) surface casing
During well control operations, fluid returning from the well is taken through A) the kill line B) the choke line C) the booster line D) the return flow line E) none of the above
B) the choke line
The effect of water depth on the drilling window to drill down to the same depth: A) the shallower the water depth, the narrower the operational drilling window B) the deeper the water depth, the narrower the operational drilling window C) the water depth does not have any effect on operational drilling window
B) the deeper the water depth, the narrower the operational drilling window
If the pump pressure is shown as 3,000 psi and you know that total pressure losses through the bit is 1,950 psi, what is the total parasitic pressure loss in this rig system? A) 3000 psi B) 4950 psi C) 1050 psi D) 2100 psi E) need more information
C) 1050 psi
You are drilling at 100 ft/hr (ROP) and hole diameter is 12 1/4". What is the rate of adding formation to the fluid in inch3/min? A) 750 B) 196 C) 2357 D) 9428 E) none of the above
C) 2357
100,000 Lb (in air) of 5" drill string is in the hole, the travelling block weights 50,000 lbs and buoyancy factor is 0.85. How much can this rig pull on a stuck pipe? (use design factor = 2.0). A) 115klbs B) 155 klbs C) 240 klbs D) 105klbs E) None
C) 240 klbs
Range 2 drill pipe, the most commonly used length, is --- A) 18-22ft B) 18-45ft C) 27-30ft D) 38-45ft
C) 27-30ft
A 4 1⁄2 " API drill pipe is rated for 75 k-psi tensile strength (grade E). The drill pipe ID is 3.826. What is the maximum tension load of this pipe in lbf? A) 263 klbs B) 302 klbs C) 330 klbs D) 352 klbs E) 481 klbs
C) 330 klbs
Annulus is in static condition and full of10.0 ppg mud. Pressure at the surface is 1500 psi, what will be the hydrostatic pressure at 10,000 ft ? A) 7700 psi B) 5200 psi C) 6700 psi D) 9428 psi E) none of the above
C) 6700 psi
A large kick is taken and the well is shut-in with SICP= 600 psi; SIDPP = 400 psi and MW=13.55 ppg. Top of the kick is at 11,000 ft TVD. What is the formation pore pressure ? A) 7150 psi B) 8350 psi C) 8150 psi D) 7750 psi E) not enough information
C) 8150 psi
These equipments are part of the rotary drilling system of a rig. A) Mud pumps and top drive B) Travelling block and drawworks C) Drilling bits and drill string D) Tripping tank and rotary table E) diesel generator and drill string
C) Drilling bits and drill string
Which of the following conditions will result in the largest increase in hydraulic horsepower? A) Increasing fluid pressure and decreasing fluid volume rate B) Increasing fluid pressure and keeping fluid volume rate constant C) Increasing both fluid pressure and the fluid volume rate D) Decreasing both fluid pressure and fluid volume at a slow but constant rate. E) All above are correct.
C) Increasing both fluid pressure and the fluid volume rate
After circulating a kick of gas out of the well while keeping bottom hole pressure constant and above formation pressure, what we must observe as SIDPP and SICP? A) SIDPP > SICP B) SICP > SIDPP C) SIDPP = SICP D) SICP ~ 2 x SIDPP E) None of the above
C) SIDPP = SICP
A Top Drive is: A) A part of the conventional rotating system. B) A massive system of equipment that drives the rig. C) Used in place of rotary table to turn the drill string. D) none of the above
C) Used in place of rotary table to turn the drill string.
During well drilling operation, the first installation of the BOPs is .... A) when spudding in the well B) after setting a liner C) after setting the surface casing string D) none of the above
C) after setting the surface casing string
These equipment are part of the Rotary Drilling System of a rig: A) mud pumps and top drive B) traveling block and drawworks C) drilling bits and drill string D) tripping tank and rotary table E) diesel generator and drill string
C) drilling bits and drill string
The correct sequence for drilling a well is: A) cementing, drilling and casing B) casing, drilling and cementing C) drilling, casing and cementing D) none of the above
C) drilling, casing and cementing
Formations at different depths having the same porosity have also the same: A) overburden stress B) grain density C) effective vertical stress D) pore pressure E) none of the above
C) effective vertical stress
What is the name of the wellhead marine equipment indicated by the arrow shown below? A) flex joint B) casing hanger C) high pressure housing D) low pressure housing E) tubing hanger
C) high pressure housing
Which of the following is not one of the major cement objective? A) support wellborn from collapse B) provide zonal isolation C) reduce shallow gas kicks D) protect casing from corrosion E) none of the above
C) reduce shallow gas kicks
___________is the process of injecting cement into a confined zone behind the casing to stop casing leaks and flow channels from formations. A) sidetracking B) cementing liner strings C) squeeze cementing D) primary cementing E) none of the above
C) squeeze cementing
Identify the equipment from the following picture A) mud gas separator B) onshore BOP C) subsea BOP D) ROV E) RCD F) Choke Panel
C) subsea BOP
For Casing and Hole Sizing, the design starting point is _________. A) the conductor casing size B) the intermediate casing size C) the final casing size D) the available volume of cement slurry E) the load capacity of the hoisting equipment
C) the final casing size
The primary method (or action) to prevent a blow out is: A) drillers well trained B) to close the BOP C) to keep the correct density of fluid in the well D) to hire an excellent company man E) to have a successful leak off test
C) to keep the correct density of fluid in the well
The main governing factor for selecting the type of drilling fluid is. A) type of expected formation fluid B) type of mud pumps C) type of the formations D) formation pore pressure E) all of the above
C) type of the formations
What is the total tripping time to change the bit that is at 9,000 ft, if the rig can handle stands of 90 ft in 3.0 minutes ? A) 4 hrs B) 8 hrs C) 5 hrs D) 10 hrs E) 12 hrs
D) 10 hrs
For a casing cement job, a total of 1,169 ft3 of Class G cement slurry volume is required, with final slurry density equals to 15.9 ppg. The slurry yield is 1.14 ft3/sack of cement. How many sacks of cement are required to do the job? A) 976 sacks B) 1126 sacks C) 926 sacks D) 1026 sacks E) not enough data
D) 1026 sacks
Based on the schematic of a shut-in well shown below, we can assure that: A) Pressure at bottom of the well is constant. B) Casing pressure (Pc) at surface is greater than surface drill pipe pressure (Pdp) C) Kick volume entered the well (height Lk) is equal to excess volume G. D) All above are correct
D) All above are correct
Successful cement design depends mainly on: A) wellbore geometry B) well depth C) type of formation fluid D) all of the above E) none of the above
D) all of the above
What are the components of a typical blowout preventer stack? A) Annular preventer B) at least one pipe ram C) a blind ram or blind shear ram D) all of the above
D) all of the above
Which of the following is/are the major objectives of cementing a well? A) protect casing from corrosion B) protect surface water aquifers from contamination C) eliminate shallow gas kicks D) all of the above E) none of the above
D) all of the above
The predicted fracture gradient can be determined using the following test: A) bump test B) leakage test C) positive test D) leak-off test E) negative test
D) leak-off test
Most kicks occur due to drilling team failing in: A) properly install and test the BOP B) pumping a heavy pill before tripping the drill string C) keeping the well filled up with drilling fluid D) making sure that the well has been filled up with the correct volume while tripping E) all above are incorrect
D) making sure that the well has been filled up with the correct volume while tripping
Even for very high circulation pressures, the resulting pressure at shale shakers is practically zero. Which part of the pressure loss in the system is acting on the well bottom? A) pressure loss at surface lines B) pressure loss in the drill string C) pressure loss through the bit D) pressure loss in the annulus E) all of the above
D) pressure loss in the annulus
Out of the three main characteristics of a well plan, which one takes the highest priority? A) quality of materials & equipment B) cost effectiveness C) usability D) safety E) none of the above
D) safety
What marine equipment is shown by the picture below? A) riser B) diverter C) flex joint D) slip joint/ telescopic joint E) none of the above
D) slip joint/ telescopic joint
To abandon the well, cement should be set A) by squeeze into annulus between well and casing if quality is not good B) at more than one depth inside the casing as cement plugs C) inside the casing from bottom to the top of the well D) inside the casing and below the float E) A&B
E) A&B
Mark the correct sentence: A) In normally compacted, normally pressured sediments, porosity decreases with depth due to compaction. B) In abnormally pressured sediments the porosity is greater than in normally pressured sediments at the same depth. C) Compaction effect is one of the four major causes of abnormal formation pressures. D) A pore pressure interpretation based on porosity is accurate for abnormal pressure caused by compact effects. E) All above are correct.
E) All above are correct.
The Well Control System permits: A) Circulating the well under pressure to remove the formation fluids and increase the mud density. B) Detecting the kick. C) Closing the well at surface. D) Moving the drill string under pressure. E) All above are correct.
E) All above are correct.
If the driller reports to you a sudden drop in pump pressure of ~ 500 psi, without having changed anything else, what could have happened in your opinion? Pressure drop across the 3 nozzles of the bit is 1580 psi. A) it is clear indication of a kick B) a leak in the drill string C) cuttings charging the annular D) the bit lost a nozzle E) B&D are correct F) none of the above are correct
E) B&D are correct
Which variables must be considered to calculate the hydrostatic pressure at the bottom of a well? A) Depth and trajectory of the well. B) Volume and fluid density. C) Annular pressure loss and fluid density. D) Well depth and fluid viscosity. E) Drill string length and fluid density.
E) Drill string length and fluid density.
What other drilling operations take time? A) coring B) reaming C) slip and cut D) testing E) all of the above
E) all of the above
Pressure losses in the annulus are affected by all of these parameters, except: A) size of the drill string B) circulation rate C) size of the hole D) mud weight E) size of the bit nozzles
E) size of the bit nozzles
During drilling and/or circulating operations, the pit gain or increase in mud flow out are the most positive indicators that a kick has been taken or is in progress. A) true B) false
true
