储层“主因素定量”评价方法的应用——以东营凹陷下第三系碎屑岩为例  

APPLICATION OF MAJOR ELEMENT QUANTIFICATION METHOD IN RESERVOIR ASSESSMENT:TAKING THE PALEOGENE CLASTIC RESERVOIRS IN DONGYING SAG AS EXAMPLES

作　　者：张琴[1] 朱筱敏[1] 钟大康[1] 宋刚[1] 

机构地区：[1]中国石油大学

出　　处：《天然气工业》2006年第10期21-23,共3页Natural Gas Industry

基　　金：国家"十五"重点科技攻关项目"济阳坳陷下第三系沉积体系有效烃源岩分布与评价"(编号:2001BA605A-09)的部分研究成果

摘　　要：采用“主因素定量”评价方法,对东营凹陷下第三系碎屑岩储层质量进行了评价。选用孔、渗资料齐全和缺乏孔、渗资料两种相反情况下的样品,应用灰色关联分析法来确定各指标的权重系数,然后按照评价方法的步骤,分别得到各样品的储层质量综合评价因子“Q”和“Q1”。根据“Q”和“Q1”值的差别,将储层标准分别划分为5类。结果发现,按“Q”或“Q1”的大小进行的储层分类评价的结果与中国石油天然气集团公司的碎屑岩储层分类标准基本一致。把根据“Q”或“Q1”得到的评价结果与对应的试油结果进行了比较,发现其符合率较高,说明“主因素定量”储层评价方法用于碎屑岩储层精细评价具有可行性。The Paleogene clastic reservoirs in Dongying Sag are assessed by using the 'major element quantification method'. Two groups of rock samples are selected, with one having complete porosity and permeability data while the other being lack of these data. Gray relative analysis method is used to determine the weight coefficient of each index. Then, the comprehensive appraisal factors (Q and Q1) of reservoir quality of each sample are calculated respectively according to the steps of this assessment method. The reservoir criteria are classified into 5 types according to the difference between Q and Q1. The results of reservoir classification according to the values of Q or Q1 are basically in accordance with CNPC's classification criteria of clastic reservoirs. Comparison of the appraisal results obtained according to the values of Q or Q1 with the relevant formation testing results shows that the coincidence rate is relatively high, indicating this method is applicable to the detailed assessment of clastic reservoirs.

关 键 词：碎屑岩 储集层 主因素 定量评价 灰色关联分析 东营凹陷 早第三纪 

分 类 号：TE155[石油与天然气工程—油气勘探]