中国地质2018，Vol.45Issue(2)：286-303,18.DOI:10.12029/gc20180206
二连盆地白音查干凹陷下白垩统阿尔善组—都红木组层序地层
Sequence stratigraphy of the Lower Cretaceous Aershan—Duhongmu Formation in Baiyinchagan Sag, Erlian Basin
摘要
Abstract
Sequence stratigraphy is a key technology for exploration of stratigraphic-lithological reservoirs.For the purpose of pushing forward the stratigraphic-lithological reservoirs exploration of Baiyinchagan Sag in Erlian Basin,on the basis of previous researches,and through delicate stratigraphical correlation of over 200 wells,detailed core description of 759.42 meters from 33 wells,and analysis of regional tectonic-sedimentary evolution,the authors recognized the sequence stratigraphic characteristics of the main target for petroleum exploration in Baiyinchagan Sag (i.e.,the Lower Cretaceous Aershan-Duhongmu Formation) and redefined the sequence boundary properties according to various kinds of data such as tectonic geology,paleontology,petrology,logging and seismic reflection.The results show that the Lower Cretaceous Aershan-Duhongmu Formation of Baiyinchagan Sag can be divided into two super long-term sequences and five long-term sequences.The two super long-term sequences correspond to the Aershan-Tenggeer Formation and the Duhongmu Formation.The five long-term sequences correspond to the 1st member of Aershan Formation,the 2nd member of Aershan Formation,Tenggeer Formation,the 1st member of Duhongmu Formation and the 2nd to the 3rd member of Duhongmu Formation.Meanwhile,this paper indicates that the long-term sequence bottom boundary of Tenggeer Formation in Baiyinchagan Sag is a conformity surface,which can not form the favorable pathways for oil-gas migration.In another word,even if there are good trap conditions in bottom boundary of Tenggeer Formation of Baiyinchagan Sag,for example Xi40-Xi43 wellblock,there is no hydrocarbon accumulation due to lacking the favorable pathways of oil-gas migration and the associated insufficient hydrocarbon supply.关键词
二连盆地/白音查干凹陷/下白垩统/阿尔善组/腾格尔组/都红木组/层序地层Key words
Erlian Basin/Baiyinchagan Sag/Lower Cretaceous/Aershan Formation/Tenggeer Formation/Duhongmu Formation/sequence stratigraphy分类
天文与地球科学引用本文复制引用
高红灿,郑荣才,肖斌,刘云,栾艳春,刘虹利..二连盆地白音查干凹陷下白垩统阿尔善组—都红木组层序地层[J].中国地质,2018,45(2):286-303,18.基金项目
重庆市科委前沿与应用基础研究(一般)项目(cstc2014jcyjA90022)、重庆科技学院科研基金(CK2016B14)联合资助.Supported by Research Project of Frontier and Application Fundamental Science of the Chongqing Science & Technology Commission (No.cstc2014jcyjA90022) and Research Fund of Chongqing University of Science & Technology (No.CK2016B14) （一般）
