石油实验地质2017，Vol.39Issue(3)：318-326,9.DOI:10.11781/sysydz201703318
塔里木盆地西南部白垩系-古近系沉积特征与储盖组合
Reservoir-cap rock assemblage and sedimentary characteristics of Cretaceous-Paleogene in southwestern Tarim Basin
摘要
Abstract
The sedimentary studies of Mesozoic-Cenozoic in the southwestern Tarim Basin indicated that the Early Cretaceous inherited the sedimentary features of the Jurassic, mainly dominated by continental deposits.As the Tethys ocean expanded from the Late Cretaceous to Oligocene, sea water flooded several times to Kashi, Yecheng and Hetian from west to east, forming the West Tarim Bay.Marine facies sedimentation developed from the Upper Cretaceous to the Eocene Wulagen Formation in the southwestern Tarim influenced by large scale transgressions when global sea level rose.After that, continental sedimentation took the leading position from the Eocene to the Oligocene Bashibulake Formation due to global sea level decrease.Sea level changed frequently from the Cretaceous to the Paleogene in the southwestern Tarim, resulting in the preservation of carbonate, gypsum salt and mud rocks of littoral and neritic lagoon facies.There are two sets of reservoir and cap rock assemblages, the one is carbonate rocks in the Upper Cretaceous Yigeziya Formation and gypsum salt rocks in the Paleogene Aertashi Formation, the other is carbonate rocks in the Paleogene Kalataer Formation and dark mudstones in the uplying Wulagen Formation.These two assemblages are important for oil and gas exploration in the southwestern Tarim Basin.关键词
储盖组合/沉积特征/白垩系/古近系/塔里木盆地Key words
reservoir and cap rock assemblage/sedimentary characteristics/Cretaceous/Paleogene/Tarim Basin分类
能源科技引用本文复制引用
岳勇,徐勤琪,傅恒,席党鹏..塔里木盆地西南部白垩系-古近系沉积特征与储盖组合[J].石油实验地质,2017,39(3):318-326,9.基金项目
国家科技重大专项"大型油气田及煤层气开发"(2011ZX05002-003)资助. （2011ZX05002-003）
