摘要
利用川西新场地区常规测井、能谱测井、电成像测井及野外露头资料,对沉积环境、沉积构造、古水流方向进行了系统研究。认为须二段沉积环境为弱水动力条件下的还原环境;系统地利用电成像测井技术识别出了槽状交错层理、楔状交错层理、递变层理、冲刷面、变形层理等沉积构造;而且在交错层理识别的基础上,深化了古水流方向认识,认为须二段古水流方向具有由北向南的趋势,反映了物源来自北部。
The sedimentary environment and structure,and paleocurrent direction in Xinchang area,western Sichuan Basin,are studied based on some data from conventional logging,spectrum logging,electric imaging logging and outcrop observation.It is considered that(1) the sedimentary environment of Xujiahe 2 Member is reduction one under weak hydrodynamic condition;(2) its sedimentary structures including trough-and wedge-shape cross bedding,graded bedding,surface of scour and distorted bedding can be identified by electric imaging logging;and(3) its paleocurrent direction,which is further recognized on the basis of the identification of cross bedding,is a trend from north to south,showing source from the north.
出处
《天然气勘探与开发》
2012年第4期28-33,8-9,共6页
Natural Gas Exploration and Development
关键词
电成像测井
测井相
沉积构造
须家河组
川西地区
electric imaging logging,logging facies,sedimentary structure,Xujiahe Formation,western Sichuan Basin
