Patents/Assignees

CNPC Engineering Technology R&D Company Limited

10 patents in portfolio

US12612856utility2026
Lost Circulation Detection Device
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US12497331utility2025
High-strength Portland Cement Slurry for Ultra-high Temperature Cementing, Preparation Method Therefor and Application Thereof
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US12448885utility2025
Mud Pressure Wave Signal Modulation Apparatus and Method
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US12391861utility2025
Cement Slurry System, Preparation Method Therefor and Use Thereof
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US12146095utility2024
Ph-responsive Nano-gel Plugging Material, and Preparation Method Therefor and Use Thereof
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US11959375utility2024
Method for Evaluating Downhole Working Condition of a PDC Bit
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US11926787utility2024
Well Cementing Method for Improving Well Cementing Quality by Controlling Hydration Heat of Cement Slurry
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US11787990utility2023
Bionic and Dual-phobic High-performance Water-based Drilling Fluid
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US11686190utility2023
4D Quantitative and Intelligent Diagnosis Method and System for Spatio-temporal Evolution of Oil-gas Reservoir Damage Types and Extent
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US11618844utility2023
High Temperature Resistant Portland Cement Slurry and Production Method Thereof
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