摘要
Goumeri油气田Sokor1段E1油层组油层电阻率与围岩电阻率的比值为2.0左右,属于低对比度油层,E2、E3、E4和E5油层组出现的水层一般具有高电阻率特征,常规测井方法识别油层和水层难度大。围绕这一问题,分别在分析Sokor1段地层测井、录井响应特征的基础上,针对特征突出的相关参数——全烃、深侧向电阻率和孔隙度,分别建立深侧向电阻率与全烃、孔隙度与全烃交会图板,并据此形成储集层测井、录井综合解释评价参照标准。应用过程中,以深侧向电阻率与全烃交会图板解释为基础,结合该参照标准进行解释,可有效实现该区储集层的解释评价。实例分析表明,应用该方法在提高储集层整体解释评价符合率的同时,既可有效判断低对比度油层,也可准确判断高电阻率水层。
The ratio of pay zone resistivity to host rock resistivity for E1 oil-bearing layer of Sokor1 member in Goumeri Oilfield is about 2.0,which is a low-contrast oil layer,the water layers in oil groups E2,E3,E4and E5 generally appear high resistivity characteristics,thus it is difficult for conventional well logging methods to identify oil and water layers.In view of this problem,based on the analysis for well logging and mud logging response characteristics of the strata in Sokor1 member respectively,intersection charts for deep lateral resistivity and total hydrocarbon,porosity and total hydrocarbon were established with the relevant and prominent parameters of total hydrocarbon,deep lateral resistivity and porosity,accordingly forming a comprehensive interpretation and evaluation reference standards for well logging and mud logging.During the application,on the basis of the interpretation from the intersection chart of deep lateral resistivity and total hydrocarbon in combination with reference standards,the reservoir interpretation and evaluation can be effectively achieved.The example showed that the method not only can effectively determine the low-contrast oil layers,but also accurately determine high-resistivity water layers,besides,it can improve the overall compliance rate of the reservoir interpretation and evaluation.
出处
《录井工程》
2013年第4期39-43,84,共5页
Mud Logging Engineering
关键词
气测录井
测井
特征
解释评价
方法
参照标准
gas logging,well logging,characteristic interpretation and evaluation,method,reference standard
