Слайд 2© 2001, Halliburton Energy Services, Inc.
March 7, 2001
Calculating and Using Sensor to
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Bit Distance
Слайд 3© 2001, Halliburton Energy Services, Inc.
March 7, 2001
Sensor Measure Point
Used to calculate
![© 2001, Halliburton Energy Services, Inc. March 7, 2001 Sensor Measure Point](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/1180258/slide-2.jpg)
sensor to bit distance
Surveys referenced to where measurements made, not to bit
Gamma referenced to where measurements made, not to bit
Слайд 4© 2001, Halliburton Energy Services, Inc.
March 7, 2001
Identify Sensor and Probe Type
Directional
![© 2001, Halliburton Energy Services, Inc. March 7, 2001 Identify Sensor and](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/1180258/slide-3.jpg)
Only
DEP, DEP2, PCD
Gamma
PCG
Слайд 5© 2001, Halliburton Energy Services, Inc.
March 7, 2001
Sensor Measure Point – DEP2
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Слайд 6© 2001, Halliburton Energy Services, Inc.
March 7, 2001
Sensor Measure Point - PCD
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Слайд 7© 2001, Halliburton Energy Services, Inc.
March 7, 2001
Sensor Measure Point - PCG
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Слайд 8© 2001, Halliburton Energy Services, Inc.
March 7, 2001
Bottom Ring to
Probe Bottom Distance
Measure
![© 2001, Halliburton Energy Services, Inc. March 7, 2001 Bottom Ring to](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/1180258/slide-7.jpg)
the distance from the Bottom Ring Assembly to the bottom of the probe.
(6.3’)
Слайд 9© 2001, Halliburton Energy Services, Inc.
March 7, 2001
Obtain BHA Tally
Bit 8 ½” 0.75’
Motor 6 ¾” 24.35’
Stabilizer 6
![© 2001, Halliburton Energy Services, Inc. March 7, 2001 Obtain BHA Tally](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/1180258/slide-8.jpg)
¾” 5.72’
NMDC 6 ¾” 29.87’
HOS 6 ¾” 6.21’
X-over sub 6 ¾” 2.37’
NMCD 6 ¾” 28.53’
Слайд 10© 2001, Halliburton Energy Services, Inc.
March 7, 2001
Obtain Bore Depth from Spacer
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Stack Calculations
54.25”
54.25”
Слайд 11© 2001, Halliburton Energy Services, Inc.
March 7, 2001
Calculations
Add lengths from bit to
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top of MWD mounting sub or collar
66.9’
Subtract HOS Bore Depth
62.38’
Subtract distance from bottom ring to bottom of probe
56.08’
Add sensor measure point (PCD)
56.94’