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近年来,对沉积盆地泥岩孔隙流体超压成因和流体压力封存箱的研究取得了重要进展,认识到压实不平衡、区域构造挤压、水热增压作用、蒙皂石脱水作用、烃类生成、渗透作用和浮力是形成超压的主要因素,封存箱内超压流体的幕式突破与微裂隙或断裂密切相关。研究表明,断裂排烃可能是盆地厚层泥岩排烃的重要方式之一,对原生泥岩裂缝油气藏的形成具有重要意义。
In recent years, significant progress has been made in the study of the genesis of overpressure and fluid pressure in mudstone pores in sedimentary basins. It is recognized that there are many problems such as compaction imbalance, regional tectonic compression, hydrothermal pressurization, dehydration of smectite, Formation, infiltration and buoyancy are the main factors that cause overpressure. The breakthrough of overpressure fluid in the enclosure is closely related to the micro-cracks or fractures. The results show that it is one of the most important ways for hydrocarbon expulsion in the thick mudstone of the basin, which is of great significance to the formation of fractured oil and gas reservoirs in the primary mudstone.