摘要
长期以来 ,进行有效储层的划分一直是一项十分重要而繁琐的工作。文章介绍了一种利用测井资料划分碳酸盐岩不同孔隙组合类型储层的方法 ,该法首先以地质资料为基础 ,综合测井、钻井、岩心分析、铸体薄片、图象分析鉴定等资料 ,对研究区内 14口典型井进行对比分析 ,将马五1储层划分为孔洞型、孔缝型、孔隙型和微孔型等四类。利用不同类别的孔隙组合在测井曲线上具有不同的特征 ,建立了四类储层的测井判识模型 ,将该判识模型在长庆气田奥陶系马五1储层 70口井中进行了应用 ,判识精度达到 90 %以上 ,表明该方法对低渗碳酸盐岩储层类型具有较高的判识能力 ,为其它相似气田勘探开发充分利用电性资料进行储层分类评价研究提供了一种经济、适用。
For a long time in the past,it was a very important and troublesome work to divide effective reservoirs.A method of dividing carbonate reservoirs with different pore structures by use of log data is introduced in the paper.Based on the geological data and in combination with the data on logging,drilling,core analysis,cast thin section and image analysis and appraisal,etc.,the O 1m 5 reservoir is divided into four types,as pore cavity type,pore fracture type,pore type and micropore type through contrasting and analyzing fourteen typical wells in this region.Because different types of pore structure are of various properties in log,four log identified models of the four types of reservoir were set up.Through applying these models to the seventy wells drilled in O 1m 5 reservoir in Changqing gas field,it is found that their identification accuracies may be up to more than 90%,which indicates that this method is of a relatively high identification capability for the low permeability carbonate reservoirs.Therefore an economic,suitable and reliable method is proposed in order to make full use of the log data to carry out reservoir classification,evaluation and research in the other similar gas field exploration and development.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2000年第3期44-46,共3页
Natural Gas Industry
关键词
碳酸盐岩
储集层
测井
分类
气田
下古生界
E'erduosi Basin,Carbonate rock,Reservoir,Well logging,Classification,Fuzzy mathematics,Early Ordovician Epoch
