Drilling Test

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Author:
Anonymous
ID:
39419
Filename:
Drilling Test
Updated:
2010-10-03 23:38:03
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Drilling
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Description:
Test 1
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  1. Bottom line in drilling?
    To drill a useable hole
  2. Name the six facets of a petroleum company
    • Reservoir
    • Production
    • Land/Legal
    • Geology/Geophysics
    • Drilling
    • Completion/Workover
  3. What is the interest of the well operator?
    Owns the (majority) of the rights of production
  4. Who is the well operators representative (on location)?
    • Operators Representative
    • a.k.a. Company Man
  5. What is the Drilling Contractors interest in the well?
    Separate company paid to drill well
  6. What is a tool pusher?
    The Drilling Contractors on site representative.
  7. On location: Who operates the drilling equipment close to the rig floor?
    The Driller
  8. On location: Who maneuvers drill pipe into position?
    The Derrickman
  9. On location: Who operates the tongs and assembles pipe?
    The Roughneck a.k.a. Floor Hand
  10. What are drilling personnel shifts called?
    Tours (pronounced Towers)
  11. Name some support Personnel.
    • Motorman
    • Rig Mechanic
    • Rig Electrician
    • Crane Operator
  12. Name some service company services.
    • Drilling Fluids
    • Cements
    • Formation Evaluation
    • Fishing
    • Rentals
    • BOP's
    • Bits
    • Well Monitoring
  13. What are two constituents of Drilling Mud?
    • Barite
    • Bentonite
  14. What are the two types of drilling rigs?
    • Rotary drive
    • Cable tool
  15. What are some types of land based rotary drive rigs?
    • Jacknife
    • Coiled Tubing
    • Portable Mast
  16. What are two main types of marine rotary drive rigs?
    • Floating
    • Bottom Support
  17. What are some types of floating marine rigs?
    • Semi-submersible
    • Drillship
  18. What are two main types of bottom support marine rotary drive rigs?
    • Jackup
    • Barge
    • Platform
  19. What are two types of Marine Platform Rigs?
    • Self-Contained
    • Tendered
  20. What are the main differences between cable tool and rotary drive rigs?
    • Rotary uses fluids and is a continuous process
    • Cable tool is a percussive batch process and is a dry process
  21. Steps of Drilling a Well
    • Determine Location
    • Prepare Site
    • MIRU
    • Spud (start drilling)
    • Surface hole-case-cement
    • DO - leak off test
    • Intermediate hole-case-cement
    • Evaluation while logging
    • Reach TD
    • LD Drill Pipe
    • Production Casing-cement
    • RDMO Drilling Rig
    • MIRU Completion Unit-comp.-stim.-run tbg
  22. Wildcat Well
    no known drilling or geological data
  23. What kind of well has geological data but no drilling data?
    Exploratory Well
  24. Step-Out Well has what kind of data?
    Some geological and drilling data.
  25. Infill Well
    Drilled in productive areas of field. Readily accessible data
  26. Re-Entry Well
    Reasonably well known data into existing well bore to deepen or re-direct.
  27. Kick
    Uncontrolled flow into a wellbore
  28. Blowout
    Uncontrolled flow out of the wellbore
  29. Normally pressured Fresh and Saltwater Zones
    • 8.34 ppg (fresh water gradient)
    • 10 ppg (saturated NaCl water)
  30. Under-Pressured (Subnormal)
    less than 8.33 ppg
  31. Over pressured (abnormal)
    greater than 10 ppg
  32. Soft Shut‐in Procedure
    • • Sound alarms, notify appropriate people
    • • Stop drilling, pick up off bottom
    • • Clear the kelly or tool joint above the rotary table
    • • Shut off mud pump
    • • Check for flow
    • • If flowing
    • – Open choke line valves and choke
    • – Close annular preventer
    • – Close choke
    • • Record data after pseudo‐steady state
  33. Hard Shut‐in Procedure
    • • Sound alarms, notify appropriate people
    • • Stop drilling, pick up off bottom
    • • Clear the kelly or tool joint above the rotary table
    • • Shut off mud pump
    • • Check for flow
    • • If flowing
    • – Close annular preventer (choke and valves should
    • already be closed)
    • – Open choke valves but not the choke
    • • Record data after pseudo‐steady state
  34. Three Types of Contract Rig Cost
    • Daywork
    • Footage
    • Turnkey
  35. Daywork
    • Risk on operator, but operator has control
    • Daily Cost
  36. Footage
    • On contractor while drilling, otherwise on operator
    • Cost per foot
  37. Turnkey
    • Cost per well
    • all risk and control on operator
  38. Rate Costs:
    • Wellsite costs
    • Drilling costs
    • Casing Costs
    • Logging Costs
  39. Skin
    Formation damage factor caused by drillers. Main completion issue
  40. Flowrate is inversely proportional to:
    • Viscosity
    • Recovery Factor
    • Skin Factor
  41. Flowrate is proportional to:
    • Permeability
    • Height
    • Pressure
  42. Determine most important effects in Flowrate in decreasing order
    • Permeability
    • Skin
    • Height
    • Viscosity
    • Pressure
    • Recovery Factor
  43. Main Completion Types
    • Openhole
    • Perforated Casing
    • Single Selective
    • Multiple Selective
    • Dual String
    • Gravel Pack
    • Monobore
  44. Gravel Packing Choices
    • Open Hole Gravel Pack
    • Cased Hole Gravel Pack(Prepacked)
    • Cased-Hole (Perforation Packed)
  45. Pressure Derivation
    • F=ma
    • F=V'rho'g=Ah'rho'g
    • p=F/A=A'rho'gh/A
    • P='rho'gh
  46. Unit conversion from psi to ppg
    19.25
  47. Equivalent Circulating Density
    EDC = Mud Weight + [(Phyd-Ppump)*19.25] / Depth
  48. What is main component added to weigh up mud and what is its density?
    Barite - 4.20 g/cc
  49. What is main component of Drilling Mud 'gel'
    Bentonite - 2.49 g/cc
  50. Plastic Viscosity Equation
    'theta 600' - 'theta 300'
  51. Apparent Viscosity Equation
    'theta 600' / 2
  52. Yield Point Equation
    'theta 300' - Plastic Viscosity
  53. Mud Density Adjustment Equation (2 steps)
    • Vf = Vi[('rho_add' - 'rho_i') / ('rho_add' - 'rho_f')]
    • Mass_added = (Vf - Vi) * 'rho_add'
  54. Conversion from g/cc to lb/bbl
    1g/350mL = 1lb/bbl (*1/42gal/bbl = lb/gal)
  55. Kill Mud Weight Equation
    (SIDPP*19.25)/depth + Orig. Mud Weight = Kill Mud Weight
  56. Five things on a rig named after animals
    • Possum Belly - collection underneath shakers, where you get gas readings
    • Rat Hole - Where you store kelly while tripping
    • Mouse Hole - Where you store next joint of pipe
    • Monkey Boards - Where Derrickman stands
    • Cat Walk - Where you P.U. and L.D. jts of tbg/d.p.

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