摘要
利用岩石成分和物性分析、测井、录井以及试油试采等资料,对大王庄油田沙三上亚段湖相混积岩岩性及有利储层识别进行探讨。研究表明,大王庄油田沙三上亚段湖相混积岩可划分为陆源碎屑岩、碳酸盐岩滩坝、碳酸盐质碎屑岩三大类;根据岩心物性分析可知碳酸盐岩滩坝物性好,为有利储层;陆源碎屑岩和碳酸盐质碎屑岩物性差,为不利储层。选取自然电位、自然伽马建立二元图版,结合两种敏感因素的定量岩性判断参数模型,实现了混积岩岩石类型的识别,当岩性综合判断参数大于60时可判断为高孔高渗的碳酸盐岩滩坝,准确率达95%以上。该方法对湖相混积岩岩性识别、寻找有利储层和提高剩余油挖潜效果具有一定指导意义。
The lithology and favorable reservoir identification of lacustrine mixed rocks in the small layer 2 of the upper part of the member 3 of Shahejie formation in Dawangzhuang Oilfield are discussed by using the data of rock composition and physical property analysis,logging,well logging and production test.The results indicate that the lacustrine mixed rocks there may be divided into Terrigenous clastic rock,carbonate rock shoal and carbonate clastic rocks.According to the core physical properties analysis,the carbonate rock shoal with good physical properties belongs to favorable reservoir,while Terrigenous clastic rock and carbonate clastic rock with poor physical properties are unfavorable reservoirs.By selecting the natural potential and natural gamma,the binary chart is established.Combined with the quantitative lithology identification parameter model of two sensitive factors,the rock type of the mixed rocks is realized.When the value is greater than 60,it can be identified as high porosity and high permeability carbonate rock shoal,and the accuracy of lithology identification is more than 95%.Therefore,the method has a good guidance for lithology identification of lacustrine mixed rocks,for favorable reservoirs identification and can improve the potential exploitation of remaining oil.
作者
李楚楚
洪秀娥
韩登林
门南方
赵苗苗
LI Chuchu;HONG Xiu’e;HAN Denglin;MEN Nanfang;ZHAO Miaomiao(School of Geosciences,Yangtze University,Wuhan,Hubei 430100,China)
出处
《石油地质与工程》
CAS
2023年第4期37-44,共8页
Petroleum Geology and Engineering
关键词
大王庄油田
陆源碎屑岩
碳酸盐岩滩坝
碳酸盐质碎屑岩
岩性识别
Terrigenous clastic rock
carbonate rock shoal
carbonate clastic rock
lithologic identification
Dawangzhuang Oilfield
