柴达木盆地北缘地区第三系碎屑岩储层沉积相特征  

CHARACTERISTICS OF TERTIARY RESERVOIR SEDIMENTARY FACIES IN THE NORTH PART OF QAIDAM BASIN

作　　者：王鹏[1] 赵澄林[1] 

机构地区：[1]石油大学地球科学系,北京102200

出　　处：《石油大学学报（自然科学版）》2001年第1期12-15,共4页Journal of the University of Petroleum,China(Edition of Natural Science)

基　　金：中国石油天然气集团公司"九五"重点科技攻关项目!(970 2 0 8-0 3 -0 2 )

摘　　要：柴达木盆地北缘地区是青海油田三大产油气区之一。该区第三系碎屑岩储层主要分布于下干柴沟组(E3)到下油砂山组 (N12 )地层中 ,前人认为此地层主要以河流相和泛滥平原相为主。对该地区的地面、井下岩性和岩相进一步研究表明 ,自下干柴沟组至下油砂山组的储集砂体主要为滨—浅湖滩坝亚相和湖泊三角洲相。The north part of the Qaidam basin is one of the three oil\|bearing units in Qinghai oilfield. The Tertiary reservoirs are mainly distributed in the strata from low\|Gancaigou formation to low\|Youshashan formation. The former research on Tertiary sedimentary facies determined that fluvial and flood plain are the main facies. A comprehensive study on petrology, structures, facies models, facies associations and sedimentary systems in this paper shows that the main facies in Tertiary are shore\|lake and shallow\|lake subfacies, and lake delta facies from low\|Gancaigou formation to low\|Youshashan formation. This new conclusion is very important in theory and economics during the course of calculating the geological reserve of Tertiary.

关 键 词：柴达木盆地 第三系 滨-浅湖滩坝亚相 湖泊三角洲相 碎屑岩储层 沉积相 特征 油气勘探 

分 类 号：P618.130.8[天文地球—矿床学] TE12[天文地球—地质学]