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Dual-pump formation fracturing
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Patent number 9,556,721
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Issue date Jan 31, 2017
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Schlumberger Technology Corporation
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In Chul Jang
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E21 - EARTH DRILLING MINING
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Single pump focused sampling
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Patent number 9,303,509
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Issue date Apr 5, 2016
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Schlumberger Technology Corporation
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Mark Milkovisch
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G01 - MEASURING TESTING
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Downhole piston pump and method of operation
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Patent number 8,613,317
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Issue date Dec 24, 2013
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Schlumberger Technology Corporation
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Stephane Briquet
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Hybrid pumping system for a downhole tool
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Patent number 8,393,874
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Issue date Mar 12, 2013
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Schlumberger Technology Corporation
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Alexander Zazovsky
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Active mud valve system
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Patent number 8,348,642
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Issue date Jan 8, 2013
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Schlumberger Technology Corporation
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Willam E. Brennan
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Single pump focused sampling
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Patent number 8,210,260
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Issue date Jul 3, 2012
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Schlumberger Technology Corporation
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Mark Milkovisch
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G01 - MEASURING TESTING
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