潜江凹陷潜三段-潜四上亚段沉积相研究  

Study on Sedimentary Facies of the Upper Members in Eq_3-Eq_4 of Qianjiang Depression

作　　者：刘宇琦[1] 李建明[1] 刘云生[2] 张广英[2] 

机构地区：[1]长江大学地球科学学院油气资源与勘探技术教育部重点实验室,湖北荆州434023 [2]江汉油田分公司勘探开发研究院,湖北潜江830013

出　　处：《石油天然气学报》2009年第1期171-173,共3页Journal of Oil and Gas Technology

摘　　要：根据古地形、岩心观察、测井曲线等特征,认为潜江组发育三角洲、淡-半咸水湖、盐湖等沉积体系。潜江凹陷碎屑物来源比较单一,主要来自于西部及北部,以西部荆门物源为主,汉水、乐乡关及永隆河物源次之,总体具有北部单向远物源、西强东弱、继承性供给的特点。研究区总体上,自北西向南东方向,由三角洲沉积体系变为淡-半咸水滨浅湖沉积体系,再变为盐湖沉积体系。潜江凹陷砂体主要呈北西方向展布是岩性油藏发育的有利区带。The features of ancient landform,core observation,logging curve showed that different types of sedimentary systems were developed in Qianjiang Formation of Qianjiang Depression,such as delta,freshwater-brackish lake,saline etc.The sources of depression clastic materials were unitary,and most of them came from the west and north.The provenance was mainly from Jingmen in the west,and then from Han River,Lexiangguan and Yonglong River.There is a distal single directional sedimentary source in the north of Qianjiang Depression,it is strong in the west and weak in the east,the sedimentary is characterized by inheritance supply.From northwest to southeast,the studied area becomes fresh-semi salt shore lake sedimentary system from deltaic deposition,then changes to salt lack sedimentary system.The sand body of Qianjiang Depression that distributes northwest,is beneficial for lithologic deposit development.

关 键 词：潜江凹陷 潜江组 沉积微相 岩性油藏 

分 类 号：P618.13[天文地球—矿床学]