库车坳陷膏盐形成机理及其对油气生成的催化效应

The Formation Mechanism of Gypsiferous Salt and Its Catalytic Effect on Hydrocarbon Generation in Kuqa Depression

孙宁富 郭凤霞

SUN Ningfu GUO Fengxia

山东科技大学地球科学与工程学院, 山东青岛 266590

College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China

库车坳陷膏盐形成是蒸发成因和深部卤水成因共同作用的结果。不仅膏盐的存在有助于有机质的富集和保存及后期的演化,而且膏盐形成过程对储集层及运移通道的发育也具有良好的改造作用。通过分析膏盐的化学组成及形成过程,明确了油气与膏盐的伴生关系,对于分析含盐地区油气催化与成藏具有重要意义。

The formation of gypsiferous salt is the outcome of evaporation and deep brine in Kuqa depression.The existence of gypsiferous salt can help the enrichment,preservation and final evolution of organism.In addition,the formation process of gypsiferous salt can modify greatly the development of reservoir and migration pathway.Through analysis of the chemical composition and the formation process of gypsiferous salt,the associate relationship between hydrocarbon and gypsiferous salt has been made clear,which is significant to analyze the catalytic effect on hydrocarbon and reservoir forming in gypsiferous salt area.

https://doi.org/10.3969/j.issn.1008-2336.2015.01.058