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Downhole jack assembly sensor
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Patent number 8,499,857
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Issue date Aug 6, 2013
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Schlumberger Technology Corporation
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David R. Hall
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E21 - EARTH DRILLING MINING
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Flow guide actuation
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Patent number 8,408,336
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Issue date Apr 2, 2013
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Schlumberger Technology Corporation
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David R. Hall
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E21 - EARTH DRILLING MINING
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Drill bit transducer device
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Patent number 8,316,964
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Issue date Nov 27, 2012
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Schlumberger Technology Corporation
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David R. Hall
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E21 - EARTH DRILLING MINING
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Flow guide actuation
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Patent number 8,267,196
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Issue date Sep 18, 2012
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Schlumberger Technology Corporation
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David R. Hall
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E21 - EARTH DRILLING MINING
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Downhole sample rate system
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Patent number 8,061,443
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Issue date Nov 22, 2011
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Schlumberger Technology Corporation
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David R. Hall
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E21 - EARTH DRILLING MINING
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Resistivity receiver spacing
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Patent number 7,994,791
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Issue date Aug 9, 2011
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Schlumberger Technology Corporation
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David R. Hall
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G01 - MEASURING TESTING
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Downhole drive shaft connection
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Patent number 7,900,720
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Issue date Mar 8, 2011
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Schlumberger Technology Corporation
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David R. Hall
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E21 - EARTH DRILLING MINING
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Downhole nuclear tool
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Patent number 7,897,914
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Issue date Mar 1, 2011
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Schlumberger Technology Corporation
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David R. Hall
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G01 - MEASURING TESTING
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Segmented tubular body
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Patent number 7,897,915
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Issue date Mar 1, 2011
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Schlumberger Technology Corporation
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David R. Hall
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G01 - MEASURING TESTING
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Induction resistivity cover
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Patent number 7,888,940
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Issue date Feb 15, 2011
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Schlumberger Technology Corporation
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David R. Hall
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G01 - MEASURING TESTING
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Downhole jack assembly sensor
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Patent number 7,721,826
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Issue date May 25, 2010
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Schlumberger Technology Corporation
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David R. Hall
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E21 - EARTH DRILLING MINING
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Downhole cover
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Patent number 7,692,140
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Issue date Apr 6, 2010
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David R. Hall
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G01 - MEASURING TESTING
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