摘要
本文根据研究区常规测井、地层倾角测井及成像测井资料的测井相序列特征 ,分析了准噶尔盆地阜东斜坡区侏罗系沉积特征和沉积相类型。ANN(神经网络 )岩相处理结果表明 ,典型的三角洲沉积岩相序列自下而上依次为三角洲前缘远砂坝、河口砂坝、水下分流河道、分流间湾、三角洲平原分支河道及分支河道间沉积 ,将其结果与录井岩性序列对比 ,符合率非常高。这为研究区关键井的相序及沉积体系分析提供了连续的和较准确的岩相依据。通过古水流体系研究 ,可看出研究区侏罗系八道湾组—三工河组沉积时期的物源主要来自北部克拉美丽山以北地区 ,南部北三台地区以南存在次要物源。最后综合利用常规测井处理解释的岩性剖面、岩心刻度下处理出来的沉积学倾角解释成果 (沉积构造和古水流 )和ANN(神经网络 )岩相处理解释成果 。
The sedimentary characteristics and sedimentary facies have been analyzed and defined by using data of common well logging,dip logging and image logging. The treatment of ANN lithofacies shows that typical delta facies include distal bar,mouth bar,subaqueous distributary channel,interdistributary estuary in delta front,delta plain branch channel and inter branch channel in ascending order.The correlation between lithofacies and logging section shows almost no difference,which contribute to the analysis of facies sequences and sedimentary systems in the study region.The definition of palaeocurrent system shows that provenance is mainly located in the north of Kelameili Mountain, and there is secondary provenance in the south of Beisantai during the depositional period of Badaowan and Sangonghe Formations.Comprehensively applying the lithologic section interpreted by the common well logging data, the sedimentary structure and palaeocurrent interpreted by dip logging with the core correction, and ANN treatment results, the well logging models of sedimentary subfacies and mircofacies of the Jurassic in the key wells of East Fukang Slope are established.
出处
《古地理学报》
CAS
CSCD
2001年第3期41-47,共7页
Journal of Palaeogeography：Chinese Edition
关键词
准噶尔盆地
侏罗系
测井相
沉积相
Junggar Basin, East Fukang Slope, Jurassic, well logging facies, sedimentary facies
