哈萨克斯坦南图尔盖盆地构造特征研究

Study on structural feature of south Turgay basin, Kazakhstan.

本文利用二维地震资料的地质解释对研究区断裂系统、构造特征及其演化和成因进行系统研究,认为该区构造带断裂以北东向为主,由东向西划分为3个构造带,即东部Sarylan地堑构造带、中部Ashchysai背斜构造带和西部Akshabulak构造带。该区构造主要经历J2—J3断陷、J3断拗转换和K—N拗陷三个大的构造演化历史时期。依据成藏条件分析该区构造带勘探潜力较大,其有效的储盖组合则以侏罗系Kumkol组砂岩储盖组合、中侏罗Karagansky组砂泥岩储盖组合为主。

Using geologic interpretation of 2D seismic data, the paper carried out systematic study on fault system, structural feature and evolution as well as genesis in area studied, considering that faults of structural belt mainly are NE, which is divided into three structural belts from east to west: East Sarylan Graben Structural Belt, Central Ashchysai Anticline Structural Belt and West Akshabulak Structural Belt. The area mainly experienced three large tectonic evolution history stages: J2-J3 fault depression, J3 fault depression transformation and K-N depression. Based on analysis of reservoir condition, there is large potential to exploration of structural belts in the region, and effective composition of reserve with cap mainly is Jurassic Kumkol Formation sandstone reserve-to-cap composition and Mid Jurassic Karagansky Formation sandstone reserve-to-cap composition.