涠洲11区M1油田流沙港组三段储层沉积特征  

Sedimentary Characteristics of the Third Member of Liushagang Formation of M1 Oilfield in WZ11 Area

作　　者：孙天建[1] 于兴河[2] 李胜利[2] 李茂 王振军[4] 

机构地区：[1]中石油勘探开发研究院,北京100083 [2]中国地质大学(北京)能源学院,北京100083 [3]中海石油(中国)有限公司湛江分公司,广东湛江524057 [4]中石油吉林油田分公司勘探开发研究院,吉林松原138000

出　　处：《石油天然气学报》2014年第2期12-18,4,共7页Journal of Oil and Gas Technology

基　　金：国家自然科学基金项目(41072084)

摘　　要：针对涠洲11区M1油田流沙港组三段(El3)储层沉积特征差异大,沉积相类型及沉积成因不清的问题,结合岩心、录井和测井资料,对El3的岩性、沉积构造、粒度和测井曲线特征进行对比分析,识别出3种亚相5种微相。El3自下而上依次经历了水退、水进和水退的沉积演化过程,水退时期形成箱型厚层朵状砂体,水进早期形成砂泥互层枝状砂体,水进中后期与水退早期形成泥包砂为主的鸟足状薄互层砂体,水退中后期形成砂泥互层鸟足状砂体。There existed bigger difference in sedimentary characteristics and its microficies types and genesis of the third member of Liushagang Formation in M1Oilfield of WH11Area were not clarified.Based on the core and geologic logs and well logging data,the lithology and sedimentary structure,particle size and logging curve features of the third member of Liushagang Formation(El3)were contrasted and analyzed,3subfacies and 5 microfacies were identified.El3experienced the evolutional process of water subsidence,advance and water regression.The lobate shape deposited sand is created at the stage of water regression,branch-type sand in sand-mud interlayers is created at the early stage of water advance,the interbed of thin sand which is sand-in-mud bird-foot shape deposited at the middle stage of water advance and the early stage of water regression,the thin sand of bird-foot shape sand is created at the middle and later stages of the water regression.

关 键 词：涠洲 辫状河三角洲前缘 沉积特征 沉积演化 

分 类 号：P618.13[天文地球—矿床学]