Assignee
CHINA OILFIELD SERVICES LTD
CN·10 granted patents·5 pending applications·5 citations·filing 2014–2023
Top patents by PatentIndex Score
15 records- 0185US11905829B2Integrated logging instrument for coring and samplingCHINA OILFIELD SERVICES LTD·Filed 2020·Granted Feb 20, 2024·3 cites·20 claims
- 0275US12025159B2Hydraulic power system for downhole device and downhole deviceCHINA OILFIELD SERVICES LTD·Filed 2019·Granted Jul 2, 2024·2 cites·12 claims
- 0357US2025328117A1Compass Bird Control Method and ApparatusCHINA OILFIELD SERVICES LTD·Filed 2023·Application pending·0 cites
- 0454US11714026B2Vibration detection apparatus applied to nuclear magnetic resonance while drilling instrumentCHINA OILFIELD SERVICES LTD·Filed 2020·Granted Aug 1, 2023·0 cites·17 claims
- 0553US12235194B2Coring deviceCHINA OILFIELD SERVICES LTD·Filed 2021·Granted Feb 25, 2025·0 cites·17 claims
- 0653US12188919B2Method and system for measuring composition and property of formation fluidCHINA OILFIELD SERVICES LTD·Filed 2020·Granted Jan 7, 2025·0 cites·17 claims
- 0750US11927713B2Method, device and medium for acquiring logging parametersCHINA OILFIELD SERVICES LTD·Filed 2021·Granted Mar 12, 2024·0 cites·9 claims
- 0845US12359519B2Coring and sampling integrated sub and downhole instrumentCHINA OILFIELD SERVICES LTD·Filed 2021·Granted Jul 15, 2025·0 cites·19 claims
- 0944US11072981B2Sampling-by-pushing system and setting method thereofCHINA OILFIELD SERVICES LTD·Filed 2019·Granted Jul 27, 2021·0 cites·11 claims
- 1044US2023393296A1Adjacent well detection apparatus, method and systemCHINA OILFIELD SERVICES LTD·Filed 2021·Application pending·0 cites
- 1143US2025270880A1Push-the-Bit Rotary Steerable ApparatusCHINA OILFIELD SERVICES LTD·Filed 2023·Application pending·0 cites
- 1242US11624244B2Connecting structure for drill collar of logging while drilling instrument and drill collar sub male and female jointsCHINA OILFIELD SERVICES LTD·Filed 2019·Granted Apr 11, 2023·0 cites·13 claims
- 1339US11788405B2Downhole oil level detection deviceCHINA OILFIELD SERVICES LTD·Filed 2020·Granted Oct 17, 2023·0 cites·16 claims
- 1436US2015136400A1Oil Recovery Process with Composition-Adjustable Multi-Component Thermal Fluid (MCTF)CHINA OILFIELD SERVICES LTD·Filed 2014·Application pending·0 cites
- 1535US2024143651A1Logging Image Definition Recognition Method and Device, Medium, and Electronic EquipmentCHINA OILFIELD SERVICES LTD·Filed 2021·Application pending·0 cites
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →