摘要
本文从盐源及形成环境两方面介绍了蒸发岩地层的成因,认为奈曼凹陷蒸发岩为陆相湖盆沉积,并剖析了奈曼凹陷蒸发岩地层的发育特征,在垂向上有明显的蒸发沉积序列,每一典型沉积旋回分为3层:旋回开始时为泥岩或薄层碳酸盐岩层;之上为膏质泥岩、泥膏岩、泥质膏盐岩、膏岩;最上部为膏盐岩及盐岩层。本文还总结了不同蒸发岩在测井资料上的响应特征,为准确的识别蒸发岩提供依据,最后详细的阐述了蒸发岩作为生油岩、盖层、油气运移载体及盐构造与油气藏的关系。
This paper introduces the formation causes of evaporite strata from the source and environment. It is thought that Naiman depression evaporites are terrestrial lacustrine deposition. The development characteristics of Naiman depression evaporite strata are analyzed which have obvious evaporite deposition sequence verticaly. Each typical sedimentary cycle is divided into three layers: at the bottom of the cycle is mudstone or thin carbonate bed; in the middle is gypsiferous mudstone, mud gypsum rock, shaly gypsum salt rock and gypsum rock; on the top is gypsum salt rock and salt rocks.The logging response characteristics of different evaporites are summarized in the paper. It provides the basis for accurate identification of evaporites. Finally evaporites are formulated as oil source rock, cap rock, carrier of oil and gas migration and relationship between salt tectonics and reservoirs.
出处
《国外测井技术》
2013年第2期53-56,52,共5页
World Well Logging Technology
关键词
蒸发岩
膏盐岩
油气藏
测井
evaporite
gypsum salt rock
hydrocarbon reservoir
well logging
