潜江凹陷潜三段与潜四段各微相粒度特征分析  

Micro-facies Grain-size Characteristic of Qian3 and Qian4 Segment in Qianjiang Depression

作　　者：詹冶萍[1] 杨香华[1] 潘知峰[2] 

机构地区：[1]中国地质大学,武汉430074 [2]中国地质大学,北京100086

出　　处：《重庆科技学院学报（自然科学版）》2009年第5期1-4,共4页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：中国石化江汉油田勘探开发研究院资助项目

摘　　要：潜三段与潜四段沉积时期，蚌湖洼陷足潜江凹陷的沉积、沉降中心。通过对研究区重点地区岩心进行观察并结合粒度分析．认为该沉积时期的沉积水动力特征为典型的牵引流沉积，主要的沉积相类型为三角洲前缘与前三角洲相。同时，通过分析粒度参数．发现各微相间粒度特征存在明显差异。Banghu sag is the depocenter in Qianjiang depression of Qianjiang formation. About the genetic relationships of sand from both north and south sides of Banghu sag, predecessors had put forward the views of salt lake density flow. By observing the drilling core, combined with grain size analysis, it is summarized that the cause of sand in Qianjiang depression is normal traction current deposition. The type of sedimentary facies is delta front and prodelta, but none sedimentary characteristic about density flow. By the analysis of grain size parameter and distribution we found that there are obvious differences in each micro-facies.

关 键 词：潜江凹陷 粒度 概率累积曲线 粒度参数 

分 类 号：TE121[石油与天然气工程—油气勘探]