地层元素测井(ECS)中不相容元素特征对薄层火山地层对比的约束——以松辽盆地南部王府断陷火石岭组流纹质火山岩为例  

Constraint of incompatible elements in ECS to comparison of thin layer volcanostrata: a case study of rhyolitic volcanostrata of Huoshiling Formation in Wangfu fault depression,southern Songliao Basin,NE China

作　　者：李建华[1] 屈卫华[2] 赵然磊[1] 刘洪涛[2] 唐华风[1] 

机构地区：[1]吉林大学地球科学学院,长春130061 [2]吉林油田公司勘探开发研究院,吉林松原138000

出　　处：《世界地质》2016年第1期264-275,共12页World Geology

基　　金：国家"973"计划项目(2012CB822002);国家自然科学基金项目(41472304)联合资助

摘　　要：利用ECS(Elemental Capture Spectroscopy)测井资料中Gd和Ti交汇图进行火山地层对比。结果表明王府断陷流纹质火山地层可划分为5个地层单元;存在明显间断期的CS13和CS14井均揭示Ti元素变化特征是上覆层段(晚喷发期)含量高,并推测火山喷发顺序为期次1-期次2-期次3。火山活动从南到北叠置迁移变化,经历了弱(期次1)-强(期次2)-弱(期次3)的喷发序列。对比实测孔隙度、渗透率与喷发期次的关系,可知期次2储层物性最优,期次1次之,期次3储层物性较差,有利储层分布在期次2范围内。The cross-plot of Gd and Ti of ECS（ Elemental Capture Spectroscopy） well logging data is used to contrast the volcanic layers. The results show that the rhyolitic volcanic layer in Wangfu fault depression can be divided into 5 stratigraphic units. The CS13 and CS14 wells with obvious break-in periods reveal that the characteristics of Ti is high in later eruption stage,so the volcanic eruptive sequence is the stages： 1-2-3. The volcanic activity migrated from south to north,with the eruptive strength from weak（ eruptive stage1） to strong（ eruptive stage2） and then to weak（ eruptive stage3） in sequence. The reservoir quality in descending order is eruptive stage 2-1-3 according to the relationship between the porosity and permeability of logging and the eruptive stages,and thedistribution of favorable reservoir is in the eruptive stage 2.

关 键 词：松辽盆地 王府断陷 火石岭组 不相容元素 喷发期次 ECS测井 

分 类 号：P631.44[天文地球—地质矿产勘探] P631.32[天文地球—地质学]