China National Offshore Oil has filed a patent for a coring and sampling integrated sub, featuring a base body with probe, coring, and hydraulic modules. The hydraulic module provides power for movement and core-pushing. The invention aims to enhance downhole sampling efficiency. 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 January 2024 was 64%. Grant share is based on the ratio of number of grants to total number of patents.
Integrated sub for coring and sampling in oil drilling
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A newly filed patent (Publication Number: US20240026747A1) describes a coring and sampling integrated sub designed for downhole applications. The sub consists of an integrally formed base body with a probe module, a coring module, and a hydraulic module mounted on it. The hydraulic module provides telescopic power for the probe module and power for movement, turn-over, and core-pushing of the coring module. The base body includes a probe segment between the hydraulic module and the coring module, with a core-pushing drilling assembly connecting the hydraulic module to the coring module. The probe module features a probe and a drive structure with two hydraulic drive assemblies for precise control.
Furthermore, the coring module includes a coring device and a core storage barrel, with a core-pushing drilling assembly comprising a drilling rod and a core-pushing rod for coring operations. The design ensures efficient coring and sampling processes in downhole environments. The patent also covers a downhole instrument incorporating this integrated sub, highlighting its potential applications in various industries requiring precise coring and sampling operations. The innovative design of the coring and sampling integrated sub offers a comprehensive solution for downhole operations, enhancing efficiency and accuracy in core sampling processes.
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