Group 1 - The core point of the article is that Shaanxi Yanchang Petroleum (Group) Co., Ltd. has obtained a patent for a method analyzing the dynamic and static connectivity of oil-water well sand bodies, with the patent granted on July 2023 [1] - Shaanxi Yanchang Petroleum was established in 1996 and is primarily engaged in oil and gas extraction, located in Yan'an City [1] - The company has a registered capital of 1 billion RMB and has invested in 100 enterprises, participated in 5000 bidding projects, and holds 1137 patents along with 373 trademark registrations [1]