Core Insights - The article discusses the advanced techniques employed by China National Petroleum Corporation (CNPC) in the Xinjiang oilfield, specifically the use of pressure-maintaining coring technology to analyze shale oil cores [1][3]. Group 1: Technology and Methodology - The pressure-maintaining coring technique is highlighted for its ability to effectively prevent the loss of light components in oil and gas, as well as changes in pore structure, thereby preserving the true fluid properties of the formation [1]. - This method provides a precise basis for studying the distribution of oil and water in reservoirs, evaluating reservoir characteristics, and developing extraction plans [1]. Group 2: Location and Significance - The Fengtan 101 well is located in the Ma Bei area of the Junggar Basin in Xinjiang, which is a key evaluation well due to its significant oil layer thickness and high production rates [3]. - The focus on pressure-maintaining coring at Fengtan 101 is a critical operation aimed at better understanding the characteristics of deep oil and gas reservoirs in the region [3].