摘要
利用时频分析把测井数据从沉积成因上分段,解决Q型聚类待判目标的合理性问题,利用时频分析聚类判别法对松辽盆地合隆地区泉头组上部地层的沉积相类型进行了判别,认为泉三段—泉四段底部为网状河沉积体系,泉四段(除底部外)为曲流河沉积体系。本区的构造沉降、降雨量、地面坡降、古植物及钙结层的发育等是控制网状河和曲流河存在和演化的重要因素。
Based on timefrequency analysis, the well log was analysed depositionally in order to rationaly distinguish objects at the Qclustering analysis.Using timefrequency analysisCustering analysis, the sedimentary facies types of the upper part of the Quantou Formation in the Helong area of Songliao Basin were disfinguished.The result shows that member 3 Rbottom of Member 4 of the Quantou Formation is braided river depositional system and Member 4 of the Quantou Formation(besides its bottom) is meandering river deposition system,and that tectonic subsidence,rainfall,sloping,palaeovegetation and calcify beds are important factors to contral the existence and evolution of braided or meandering river.
出处
《吉林大学学报（地球科学版）》
EI
CAS
CSCD
北大核心
2003年第3期306-311,共6页
Journal of Jilin University：Earth Science Edition
基金
中国石油天然气总公司"九五"重点攻关项目资助(981707038)
