摘要
根据区域地质、地震、测井及岩心分析资料,对位于准噶尔盆地东部山前斜坡区的滴水泉油田滴12井区八道湾组J1b1段的沉积微相进行研究。结果表明:该区J1b1段为冲积扇沉积,划分为扇根、扇中、扇缘3种亚相,可进一步划分为8种微相。岩性与岩相的垂向变化反映目的层是侏罗系最早期的低位域沉积,具有在石炭系背景上填平补齐的特点。J1b1段沉积环境从扇根、扇中往上过渡为扇缘,表明该时期为水进背景下的退积型冲积扇沉积。滴水泉油田八道湾组的冲积扇沉积微相识别,对在准噶尔盆地东部寻找与扇体有关的油气藏具有借鉴意义。
The studied results of regional geology,seismic,logging and core analysis data in the J1b1 sedimentary microfacies of the Badaowan formation in the Di-12 wellblock of Dishuiquan oilfield located in slope area of eastern Junggar basin show that the J1b1 is alluvial fan deposit,which could be further divided into 3 sub-facies of the top fan,middle fan,edge fan and 8 microfacies.The vertical variation of lithology and lithofaceies reflect that the target zone with the backfill characteristic on the Carboniferous is the earliest low-stand system tract of the Jurassic in this study area.The sedimentary environment of the J1b1 is transited from the top,middle fans up to the edge fan,showing such a period is in retrograding alluvial fan deposit under transgression environment.The identification of alluvial fan sedimentation microfacies of the Badaowan formation in Dishuiquan oilfield has a reference to prospecting the reservoirs related with the fans in eastern Junggar basin.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2011年第5期489-491,共3页
Xinjiang Petroleum Geology
关键词
准噶尔盆地
滴水泉油田
八道湾组
退积型冲积扇
沉积微相
Junggar basin
Dishuiquan oilfield
Badaowan formation
retrograding alluvial fan
sedimentary microfacies
