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对库车坳陷克拉苏构造带膏盐岩特征研究后指出,古近系膏盐岩对该区油气成藏具有重要影响:一是区域分布的巨厚膏盐岩为盐下圈闭提供了优质盖层;二是膏盐岩密度小、热导率高、隔热性差、塑性流动性强,能够有效释放侧向挤压应力等特性,有利于深层储集层保持较好物性,使盐下超深层圈闭成为现实勘探目标;三是膏盐层塑性流动性避免了构造挤压对盐下构造圈闭的破坏作用,大型圈闭得以保存,膏盐层聚集区与大型构造圈闭互为依存。精细研究刻画该区膏盐层空间展布、岩石物理特征对于扩大该区油气勘探成果具有重要意义。
After studying the characteristics of gypsum salt rock in the Kelassu structural belt in the Kuqa Depression, it is pointed out that the Paleogene gypsum salt rock has an important influence on oil and gas accumulation in this area. The first is that the gigantic gypsum salt rock with regional distribution provides salt trap High quality cover; second, the gypsum salt rock has the characteristics of small density, high thermal conductivity, poor thermal insulation, strong plastic fluidity and can effectively release lateral compressive stress, which is favorable for the deep reservoirs to maintain good physical properties and salt Under the ultra-deep traps as a realistic exploration target; Third, the plastic fluidity of the gypsum salt layer avoids the damaging effect of tectonic extrusion on the sub-salt structural traps, and the large traps can be preserved. For dependence. The detailed study depicts the spatial distribution of gypsum salt in this area and the petrophysical characteristics are of great significance for expanding the oil and gas exploration results in this area.