Pulse Generator Assembly Introduction. Superslim and Slimhole. LWD 1

1. LWD 1

Pulse Generator Assembly
Introduction
Superslim and Slimhole
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
© 2001, Halliburton Energy Services, Inc.
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3. Superslim and Slimhole

• Superslim Pulse Generator
Assembly
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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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
© 2001, Halliburton Energy Services, Inc.
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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)
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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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
January 12,
2001
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7. The Pulser

January 12,
2001
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8. The Pulser

– Generates electrical and hydraulic
power
– Extends poppet into orifice to create a
positive pressure pulse
January 12,
2001
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9. 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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10. 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
© 2001, Halliburton Energy Services, Inc.
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11. Pulse Generator Assembly

• 1200 and 650 Systems
• Parts are fixed to the pulser on a
Stator Support Tube Assembly
• Superslim and Slimhole Systems
• Parts are fixed to the pulser with
a stator locator pin and split ring
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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12. Superslim System

January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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13. Superslim and Slimhole

• The Impeller Assembly
Superslim Impeller
Slimhole
Mid Vane Impeller
January 12,
2001
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14. Superslim and Slimhole

• The Impeller Assembly
– Rotates due to mud flow
– Magnetically coupled to pulser’s main
shaft.
– Vane angle related to flow rate
• Slimhole System - 35°, 30° vane angles
• Superslim System 45° vane angle
– Two marine bearings
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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15. Superslim System

Impeller
January 12,
2001
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16. Superslim System

Impeller
January 12,
2001
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17. Superslim System

• The Upper Bearing Sleeve
January 12,
2001
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18. Superslim System

• The Upper Bearing Sleeve
– Supports the impeller’s upper bearing
– Threaded onto the shrouded stator
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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19. Superslim and Slimhole

• The Shrouded Stator
January 12,
2001
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20. Superslim and Slimhole

• The Shrouded Stator
– Pinned to the pulser poppet shaft housing
– Angled vanes deflect fluid flow
– Different vane exit angles dependent on
flow rate
– Shroud centralizes assembly in flowtube
or flow sub
– Shroud limits erosion in flowtube or flow
sub
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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21. Superslim and Slimhole

• The Shrouded Stator Assembly
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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22. Superslim and Slimhole

• The Shrouded Stator Assembly
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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23. Slimhole System

• The Upper Bearing Sleeve
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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24. Slimhole System

• The Upper Bearing Sleeve
– Supports the impeller’s upper bearing
– Threaded onto the shrouded stator
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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25. Slimhole System

• The Flow Diverter
January 12,
2001
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26. Slimhole System

• The Flow Diverter
– Directs flow toward the impeller vanes
– Installed between the upper bearing
sleeve and the shrouded stator
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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27. Superslim System

Shrouded Stator
Assembly
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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28. Superslim System

Shrouded Stator
Assembly
January 12,
2001
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29. Superslim and Slimhole

• The Stator Locator Pin
January 12,
2001
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30. Superslim and Slimhole

• The Stator Locator Pin
– Fits in pin hole on the pulser poppet
shaft housing
– Prevents the shrouded stator from
rotating on the pulser
– Captured between shrouded stator and
shroud/nose cap (nose cap-Slimhole)
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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31. Superslim System

Stator Locator Pin
January 12,
2001
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32. Superslim System

Stator Locator Pin
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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33. Superslim and Slimhole

January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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34. Superslim and Slimhole

January 12,
2001
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35. Superslim and Slimhole

• The Split Retainer Ring
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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36. Superslim and Slimhole

• The Split Retainer Ring
– Fits in ring groove on the pulser poppet
shaft housing
– Fastens shrouded stator and
shroud/nose cap (nose cap-Slimhole)
on pulser to prevent vertical movement
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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37. Superslim System

Split Retainer Ring
January 12,
2001
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38. Superslim System

Split Retainer Ring
January 12,
2001
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39. Superslim and Slimhole

January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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40. Superslim and Slimhole

January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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41. Superslim and Slimhole

January 12,
2001
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42. Superslim System

• The Shroud/Nose Cap
January 12,
2001
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43. Superslim System

• The Shroud/Nose Cap (Superslim)
– Threads onto shrouded stator
– Captures split retainer ring and stator
locator pin
– Acts as transition from poppet outer
diameter to outer diameter over pulser
– Centralizes assembly in flow sub
– Acts as support for Superslim orifice
retainer
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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44. Slimhole System

•The Slimhole Nose Cap
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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45. Slimhole System

• The Slimhole Nose Cap
– Threads onto shrouded stator
– Traps stator locator pin and split ring to
lock shrouded stator assembly onto
pulser
– Acts as transition from poppet outer
diameter shrouded stator body outer
diameter
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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46. Superslim System

Shroud/Nose Cap
Assembly
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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47. Superslim System

Shroud/Nose Cap
Assembly
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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48. Superslim and Slimhole

• The N6 Poppet
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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49. Superslim and Slimhole

Use the N6 poppet
with a dovetail
orifice
N6 Poppet
LW15 Poppet
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
49

50. Superslim and Slimhole

• The Poppet
– Threads onto poppet shaft
– Cause fluid flow restriction when
extended into the orifice
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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51. Superslim System

Poppet
January 12,
2001
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52. Superslim System

Poppet
January 12,
2001
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53. Superslim System

January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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54. Superslim and Slimhole

• The Flow Ring Key
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
54

55. Superslim and Slimhole

• The Flow Ring Key
– Prevents pulser from rotating
– Maintains highside alignment
– Installed into notch in pulser bulkhead
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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56. Superslim System

Flow Ring Key
January 12,
2001
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57. Superslim System

Flow Ring Key
January 12,
2001
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58. Superslim System

• Superslim Flow Ring/Straightener
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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59. Superslim System

• The Flow Ring/Straightener
– Slides over key on pulser
– Vanes change rotational fluid flow from
impeller to linear
– Centralizes assembly in flow sub
– Keys to Superslim Collar for toolface
alignment
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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60. Slimhole System

•Slimhole Flow Ring/Straightener
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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61. Slimhole System

• The Flow Ring/Straightener
– Slides over key on pulser
– Vanes change rotational fluid flow from
impeller to linear
– Outer ring centralizes assembly in
flowtube
– Key on outer ring locks into groove in
Slimhole flow tube
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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62. Superslim System

Flow Ring/Straightener
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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63. Superslim System

Flow Ring/Straightener
January 12,
2001
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64. Slimhole System

• The Snap Ring
January 12,
2001
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65. Slimhole System

• The Snap Ring
– Holds flow ring straightener in place
during assembly
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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66. Superslim and Slimhole

• The Spacer Sleeve
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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67. Superslim and Slimhole

• The Spacer Sleeve
– Provides transition from large outer
diameter on pulser to 1.75 inch outer
diameter of pressure case below pulser
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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68. Superslim System

Spacer Sleeve
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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69. Superslim System

Spacer Sleeve
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
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70. Superslim and Slimhole

• Superslim Pulse Generator
Assembly
January 12,
2001
© 2001, Halliburton Energy Services, Inc.
70