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通过对中国西北挤压型沉积金地主要油气富集区的地层流体压力与油气运聚关系的探讨，划分了油气运聚的5类流体压力模式：①紧邻泥岩压力封隔层的砂岩顶部出现流体超高压带，之下为正常压力（Ⅰ型）；②泥岩压力封隔层之下的砂岩内部出现流体超高压带（Ⅱ型）；③泥岩压力封隔层之下的砂岩仍为正常流体压力（Ⅲ型）；④不存在泥岩压力封隔层，地层流体压力正常（Ⅳ型）；⑤技致密岩石围限的高压异常流体砂体（Ⅴ型）。对塔里木盆地轮南、塔中地区和准噶尔盆地莫索湾地区及吐哈盆地、酒东盆地的重点油气富集区实例进行分析，提出泥岩压力科隔层的存在不仅是砂泥岩层系中油气富集的重要条件，也是储集层中形成高压流体异常带的主要影响因素。在中国西北挤压型盆地研究超压泥岩封隔层并预测其分布，能有效地指导油气勘探。
Based on the discussion of the relationship between formation fluid pressure and hydrocarbon migration and accumulation in the major oil and gas-rich areas in northwest China’s extruded gold deposits, five types of fluid pressure modes of hydrocarbon migration and accumulation are divided: ① fluid appears at the top of the sandstone near the pressure seal layer of mudstone (Type I); (2) fluid UHP zones (Type II) occur within the sandstone under the mudstone pressure packeting; (3) sandstones under the mudstone pressure packeting are still normal fluid pressure (Type Ⅲ); ④ There is no mudstone pressure packer and the fluid pressure in the formation is normal (type Ⅳ); ⑤ High pressure anomalous fluid sand body (type V) with tight rock limits. Based on the analysis of the key hydrocarbon enrichment areas in Lunnan, Tazhong area, Mosuowan area in the Junggar basin, Turpan-Hami basin and Jiudian basin, it is proposed that the existence of the mudstone interbeds is not only the reservoir of sandstone and mudstone The important conditions for enrichment are also the main factors that cause the formation of abnormal zones of high-pressure fluid in the reservoir. Studying overpressured mudstone packings in the extruded basins of northwestern China and predicting their distribution can effectively guide oil and gas exploration.