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

Source: United States Patent and Trademark Office (USPTO). Credit: China National Offshore Oil Corp

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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GlobalData’s Company Filings Analytics uses machine learning to uncover key insights and track sentiment across millions of regulatory filings and other corporate disclosures for thousands of companies representing the world’s largest industries. This analysis is combined with crucial details on strategic and investment priorities, innovation strategies, and CXO insights to provide comprehensive company profiles.