梅河盆地古近系扇三角洲沉积特征  

SEDIMENTARY CHRACTERISTICS OF THE PALEOGENE FAN DELTA IN MEIHE BASIN

作　　者：白悦悦 刘招君 王建鹏[3] 胡晓峰[1] 孙平昌 赵汉卿[1] 

机构地区：[1]吉林大学地球科学学院,吉林长春130061 [2]油页岩与共生矿产重点实验室,吉林长春130061 [3]中国石化胜利油田分公司西部新区研究中心,山东东营257045

出　　处：《大庆石油地质与开发》2014年第6期9-14,共6页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家自然科学基金项目(40972076);吉林省科技发展计划项目(20090167)资助

摘　　要：梅河盆地古近系扇三角洲分布范围广,沉积厚度大.在岩心观察、粒度及测井曲线分析的基础上,识别出扇三角洲相的扇三角洲平原、扇三角洲前缘及前扇三角洲等3种亚相,进一步划分为水上分流河道、水上分流河道间、河道间沼泽、水下分流河道、水下分流河道间、河口坝及席状砂等7种沉积微相.平原河道间沼泽为重要的聚煤场所,而在此盆地扇三角洲发育规模较小的稳定时期则是油页岩主沉积阶段.The Palaeogene fan delta in Meihe Basin is characterized by wide distribution and big sedimentary thickness. On the bases of the analyses on the core observation, grain size and well logs, three kinds of subfacies are recognized for the fan delta, fan delta plain, fan delta front and pro-fan delta. Furthermore, it can divided into the following seven sedimentary microfacieses： overwater distributary channel, overwater distributary interchannel, interchannel swamp, underwater distributary channel, underwater distributary interchannel, mouth bar and sheet sand. The interchannel swamp is an important place for coal accumulation, and the oil shale is mainly deposited in the stable period for the fan delta with the small-sized development.

关 键 词：梅河盆地 古近系 扇三角洲 沉积特征 粒度分析 沉积矿产 

分 类 号：TE121.3[石油与天然气工程—油气勘探]