成都理工大学学报（自然科学版）Issue(4)：444-451,8.DOI:10.3969/j.issn.1671-9727.2014.04.06
长岭断陷A地区登娄库组辫状河沉积的地震相精细识别与沉积微相
Fine seismic facies recognition and sedimentary microfacies in braided river of Denglouku Formation in Area A, Changling fault depression,Songliao Basin,China
摘要
Abstract
Area A in the Changling fault depression of Songliao Basin is at the stage of exploration. For lack of drilling data,the fine seismic facies recognition is accepted in the study of sedimentary microfacies.By analyzing palaeogeomorphology and sedimentary signs,the authors ascertain that the Lower Cretaceous Denglouku Formation in Area A accords with the braided river sedimentary facies. Through the well-to-seismic calibration and forward modeling,5 kinds of typical seismic facies of braided river are recognized,that is,the intense erosion type,light erosion type,lens type,abnormal amplitude type and small mound-like type.Taking the scale prediction of the sedimentary system as the premise,the seismic facies can be converted to the sedimentary microfacies.The results show that the braided river sedimentary facies in Area A can be subdivided into several kinds of microfacies, including channel,channel bar,margin of channel and floodplain.The braided river sedimentary system migrates quickly,thus forming narrow channels and small bars.Compared with the previous sedimentary facies accomplished by using drilling data only,the sedimentary microfacies based on fine seismic facies recognition perform higher precision.关键词
登娄库组/辫状河/地震相/沉积微相Key words
Denglouku Formation/braided river/seismic facies/sedimentary microfacies分类
天文与地球科学引用本文复制引用
肖大坤,林承焰,张宪国..长岭断陷A地区登娄库组辫状河沉积的地震相精细识别与沉积微相[J].成都理工大学学报（自然科学版）,2014,(4):444-451,8.基金项目
国家自然科学基金资助项目 （）
