International Patent: RHEOLOGY MODIFIER, PREPARATION METHOD THEREFOR AND USE THEREOF, AND OIL-BASED DRILLING FLUID

GENEVA, July 9 -- CHINA NATIONAL PETROLEUM CORPORATION filed a patent application (CN2025/131597) for “RHEOLOGY MODIFIER, PREPARATION METHOD THEREFOR AND USE THEREOF, AND OIL-BASED DRILLING FLUID”. With publication no. WO/2026/144500, here are the other details related to the patent application:

Kind: Initial Publication with ISR [A1]

IPC: C08G 69/44

Notably, the patent application was submitted under the International Patent Classification (IPC) system, which is managed by the World Intellectual Property Organization (WIPO).

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