白音查干凹陷中、新生代热史研究  

Mesozoic and Cenozoic Thermal History of the Baiyinchagan Sag,Erlian Basin,Northern China

作　　者：高霞[1,2] 左银辉[3] 常俊合[2] 李新军[2] 

机构地区：[1]四川省宇环气象电子工程科技有限公司,成都610041 [2]中国石化中原油田分公司勘探开发科学研究院,河南濮阳457001 [3]成都理工大学能源学院,成都610059

出　　处：《重庆科技学院学报（自然科学版）》2016年第3期1-4,共4页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：国家自然科学基金项目"查干凹陷构造-热演化研究"(41402219)

摘　　要：白音查干凹陷位于内蒙古二连盆地西缘,是二连盆地的重要生油凹陷之一。利用35口井144个镜质体反射率数据恢复了该地区的中、新生代热史。结果显示中、新生代热史具有＂一升一降＂的特征。该凹陷地温梯度从早白垩世阿尔善组沉积早期的40.0~42.1℃km,逐渐上升至赛罕塔拉组沉积末期的49.9~56.4℃km,自晚白垩世二连达布苏组开始逐渐下降,目前为32.0~35.4℃km。The Baiyinchagan sag is located in the west of Erlian basin in Inner Mongolia of China,which is an important hydrocarbon generation sag. In the paper,the Mesozoic and Cenozoic thermal history was reconstructed based on 144 vitrinite reflectance data from 35 wells. The results show that the Mesozoic and Cenozoic thermal history exhibits a general trend of ＂one increase and one decrease＂. The geothermal gradient of Baiyinchagan sag increased from 40. 0 ~ 42. 1 ℃ km during the early Cretaceous Aershan formation depositional period to 49. 9 ~56. 4 ℃ km at the end of Saihantala formation depositional period. Then the geothermal gradient began to decrease from the late Cretaceous Erliandabusu formation depositional period to the present with geothermal gradient values of32. 0 ~ 35. 4 ℃ km.

关 键 词：白音查干凹陷 热史 中、新生代 地温梯度 盆地模拟 

分 类 号：P618[天文地球—矿床学]