China National Offshore Oil has been granted a patent for a hydraulic power system designed for downhole devices. The system features dual hydraulic pumps, a switching control module, and a first execution module, enabling adjustable working pressures and movement speeds through interconnected oil paths. GlobalData’s report on China National Offshore Oil gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on China National Offshore Oil, AI assisted CAD was a key innovation area identified from patents. China National Offshore Oil's grant share as of June 2024 was 66%. Grant share is based on the ratio of number of grants to total number of patents.
Hydraulic power system for downhole devices
The granted patent US12025159B2 describes a hydraulic power system specifically designed for downhole devices. The system comprises a first motor connected to two hydraulic pumps—one with a smaller displacement than the other. The first hydraulic pump drives a first main oil path, while the second hydraulic pump drives a second main oil path. A switching control module is integrated to manage the working pressure and movement speed of the first execution module, which is linked to the first main oil path. The system is engineered to allow for pressure adjustments between the two main oil paths, ensuring operational efficiency and safety. Notably, the maximum working pressure of the first hydraulic pump exceeds that of the second, and the switching control module includes two control units that facilitate the flow of oil between the paths based on their respective pressures.
Additionally, the hydraulic power system incorporates safety features such as safety relief valves and a pressure control module to maintain optimal working conditions. The first execution module consists of a hydraulic cylinder controlled by a dedicated module, which regulates the movement of the piston rod based on the pressure from the first main oil path. The design also allows for the integration of a second execution module and a third hydraulic pump, enhancing the system's versatility. Both motors in the system are DC brushless and powered by independent DC supplies, ensuring reliable operation. This innovative hydraulic power system is intended for use in downhole applications, providing a robust solution for hydraulic actuation in challenging environments.
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GlobalData’s Patent Analytics tracks patent filings and grants from official offices around the world. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
