塔里木盆地东北地区特殊地震相及其地质意义

Special seismic facies in the northeast Talimu basin and the geological meaning

特殊地震相是特定地质条件下的产物,一般发育在特定的区域构造位置和沉积体系中,具有反映沉积环境和指示沉积相的作用。塔里木盆地东北地区目前已初步查明有9种主要的特殊地震相类型,本文讨论了它们的地质影响因素、地震特征及油气勘探效果、它们的分布规律。可见,研究特殊地震相对寻找隐蔽圈闭油气藏有着重要的意义。

Special seismic facies results from particular geological conditions, and usually occurs in the particular location of areal structure zone or depositional system. Therefore, it reflects sedimentary environment and indicates sedimentary facies. It is known that there are probably nine major kinds of special seismic facies in the northeast Talimu basin. we analyse here the geological factors which cause these special seismic facies, the features and the distributions of different kinds of seismic facies, and the hydrocarbon exploration effect. It is obvious that the study of special seismic facies is of great importance to the discovery of subtle oil and gas traps.