Pulse Generator Assembly Introduction. 1200 and 650 Systems. LWD 1

1. LWD 1

Pulse Generator Assembly
Introduction
1200 and 650 Systems
January 12, 2001
© 2001, Halliburton Energy Services, Inc.
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2. Pulse Generator Assembly Objectives

At the completion of this presentation you should be able to:
1. Describe the functions of the pulse generator assembly.
2. Name the parts required to build the pulse generator assembly.
3. Describe the main difference in the assembly of the 1200/650 systems
versus the Slimhole/Superslim systems.
January 12,
2001
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3. This is a Pulse Generator Assembly

January 12,
2001
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4. What does a Pulse Generator Assembly do?

• A mechanical assembly that
uses the drilling fluid flow
through the drillpipe to generate
both electrical and hydraulic
power and also to create
pressure changes, or pulses, in
that fluid.
January 12,
2001
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5. What makes a Pulse Generator Assembly

• The Pulser
• The Flowgear (the parts that are
installed on the pulser to build a
turbine, valve, and to resist
erosion)
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2001
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6. What makes a Pulse Generator Assembly

• The Pulser
– The central component of all four
systems
– The same pulser can be used on all four
systems
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2001
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7. The Pulser

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2001
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8. The Pulser

– Generates electrical and hydraulic
power
– Extends poppet into orifice to create a
positive pressure pulse
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2001
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9. The Pulse Generator Assembly

January 12,
2001
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10. The Flowgear

– Most of the flowgear comes in four
sizes, related to the flow rate, and is
used on one of the four systems.
• 1200 System
• 650 System
• Slimhole System
• Superslim System
– Some of the flowgear is common to two
or more systems
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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11. Pulse Generator Assembly

• The four systems can be divided
into two groups that have similar
assembly procedures
– 1200 and 650 Systems
– Slimhole and Superslim Systems
January 12,
2001
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12. Pulse Generator Assembly

• 1200 and 650 Systems
• Parts are fixed to the pulser on a
Stator Support Tube Assembly
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2001
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13. 1200 and 650 Systems

• The Impeller Assembly
Top Vane Impeller
Mid Vane Impeller
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2001
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14. 1200 and 650 Systems

• The Mid Vane Impeller Assembly
– Rotates due to mud flow
– Magnetically coupled to pulser’s main
shaft
– Vane angle related to flow rate
• 1200 System - 43°, 35°, 28° vane angles
• 650 System - 35°, 30°, 20° vane angles
– Two marine bearings
January 12,
2001
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15. 1200 and 650 Systems

Mid Vane Impeller
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2001
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16. 1200 and 650 Systems

Mid Vane Impeller
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2001
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17. 1200 and 650 Systems

• The Upper Bearing Sleeve
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2001
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18. 1200 and 650 Systems

• The Upper Bearing Sleeve
– Supports the impeller’s upper bearing
– Threaded onto the stator support tube
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2001
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19. 1200 and 650 Systems

• The Flow Diverter
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2001
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20. 1200 and 650 Systems

• The Flow Diverter
– Directs flow toward the impeller vanes
– Installed between the upper bearing
sleeve and the stator support tube
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2001
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21. 1200 and 650 Systems

• The Stator Support Tube
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2001
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22. 1200 and 650 Systems

• The Stator Support Tube
– Screwed onto the pulser poppet shaft
housing (3 screws)
– Supports following components
• Shrouded Stator (slide on)
• Hub (slide on)
• Nose Cap (threaded on)
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2001
© 2001, Halliburton Energy Services, Inc.
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23. 1200 and 650 Systems

• Stator Support Tube Assembly
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2001
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24. 1200 and 650 Systems

• Stator Support Tube Assembly
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2001
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25. 1200 and 650 Systems

Stator Support
Tube Assembly
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2001
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26. 1200 and 650 Systems

Stator Support
Tube Assembly
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2001
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27. 1200 and 650 Systems

• Stator Support Tube Screws
Button-head screws
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2001
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Flat-head screw
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28. 1200 and 650 Systems

• Stator Support Tube Screws
– Holds stator support tube in-place
– Install flat-head screw first
• Locates stator support tube in correct
position
• Aligns the remaining two screw holes
– Install two button-head screws
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2001
© 2001, Halliburton Energy Services, Inc.
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29. 1200 and 650 Systems

Flat-head screw
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2001
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30. 1200 and 650 Systems

Flat-head screw
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2001
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Button-head screws
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2001
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34. 1200 and 650 Systems

Button-head screws
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2001
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35. 1200 and 650 Systems

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2001
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2001
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37. 1200 and 650 Systems

• The Shrouded Stator
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2001
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38. 1200 and 650 Systems

• The Shrouded Stator
– Slides over key on stator support tube
– Angled vanes deflect fluid flow
– Different vane exit angles dependent
on flow rate
– Shroud centralizes assembly in
flowtube
– Shroud limits erosion in flowtube
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2001
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39. 1200 and 650 Systems

Shrouded Stator
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2001
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40. 1200 and 650 Systems

Shrouded Stator
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2001
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41. 1200 and 650 Systems

• The Hub
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2001
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42. 1200 and 650 Systems

• The Hub
– Slides over key on stator support tube
– Provides a location to place a back-up
wrench when tightening some parts
– Acts as spacer between shrouded
stator and nose cap
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2001
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43. 1200 and 650 Systems

Hub
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2001
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44. 1200 and 650 Systems

Hub
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2001
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45. 1200 and 650 Systems

• The Nose Cap
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2001
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46. 1200 and 650 Systems

• The Nose Cap
– Threads onto stator support tube
– Locks shrouded stator and hub onto
stator support tube
– Acts as transition from poppet outer
diameter to hub outer diameter
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2001
© 2001, Halliburton Energy Services, Inc.
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47. 1200 and 650 Systems

Nose Cap
January 12,
2001
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48. 1200 and 650 Systems

Nose Cap
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2001
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49. 1200 and 650 Systems

• The Poppet
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2001
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50. 1200 and 650 Systems

• The Poppet
– Threads onto poppet shaft
– Causes fluid flow restriction when
extended into the orifice
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2001
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51. 1200 and 650 Systems

Poppet
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2001
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52. 1200 and 650 Systems

Poppet
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2001
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53. 1200 and 650 Systems

Flow Ring Key
January 12,
2001
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54. 1200 and 650 Systems

• The Flow Ring Key
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2001
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55. 1200 and 650 Systems

• The Flow Ring Key
– Prevents pulser from rotating
– Maintains highside alignment
– Installed into notch in pulser bulkhead
January 12,
2001
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56. 1200 and 650 Systems

Flow Ring Key
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2001
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57. 1200 and 650 Systems

Flow Ring Key
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2001
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58. 1200 and 650 Systems

• The Flow Ring/Straightener
January 12,
2001
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59. 1200 and 650 Systems

• The Flow Ring/Straightener
– Slides over key on pulser
– Vanes change rotational fluid flow from
impeller to linear
– Outer ring centralizes assembly in
flowtube
– Groove on outer ring locks onto key in
wear sleeve retainer
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2001
© 2001, Halliburton Energy Services, Inc.
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60. 1200 and 650 Systems

Flow Ring/
Straightener
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2001
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61. 1200 and 650 Systems

Flow Ring/
Straightener
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2001
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62. 1200 and 650 Systems

• The Snap Ring
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2001
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63. 1200 and 650 Systems

• The Snap Ring
– Holds flow ring straightener in place
during assembly
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2001
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64. 1200 and 650 Systems

Snap Ring
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2001
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65. 1200 and 650 Systems

Snap Ring
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2001
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66. 1200 and 650 Systems

• The Spacer Sleeve
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2001
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67. 1200 and 650 Systems

• The Spacer Sleeve
– Provides transition from large outer
diameter on pulser to 1.75 inch outer
diameter of pressure case below pulser
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2001
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68. 1200 and 650 Systems

Spacer Sleeve
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2001
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69. 1200 and 650 Systems

Spacer Sleeve
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2001
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70. 1200 and 650 Systems

• Pulse Generator Assembly
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2001
© 2001, Halliburton Energy Services, Inc.
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