9 Patents
- US123595192025Coring and Sampling Integrated Sub and Downhole Instrument
CHINA OILFIELD SERVICES LIMITED
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- US121889192025Method and System for Measuring Composition and Property of Formation Fluid
CHINA NATIONAL OFFSHORE OIL CORPORATION
0 cites - US120251592024Hydraulic Power System for Downhole Device and Downhole Device
China National Offshore Oil Corporation
0 cites - US120128162024Core Detection Device of Coring Instrument and Spacer Insertion Device
China Oilfield Services Limited
0 cites - US119058292024Integrated Logging Instrument for Coring and Sampling
China National Offshore Oil Corporation
0 cites - 0 cites
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- US116242442023Connecting Structure for Drill Collar of Logging While Drilling Instrument and Drill Collar Sub Male and Female Joints
CHINA OILFIELD SERVICES, LIMITED
0 cites