摘要
鄂尔多斯盆地志丹地区长8储集层地质特征复杂,相对高电阻率水层、相对低电阻率油层与常规油水层共存,测井响应特征复杂多变。在油水层识别过程中,一般测井参数不能将其有效识别,造成有效油层"漏失"和水层的错误识别。针对以上情况,结合大量的测井数据、试油试产和取芯分析等资料,针对志丹地区主要含油层位长81,注重测井单项信息提取及参数的综合应用,采用单井径向电阻率对比法、曲线重叠图法和多井资料交会图综合分析法逐步识别各类流体,最终对油水层进行有效的识别,形成一套合理的流体识别方法。
The geological characteristics of Chang 8 reservoir in Zhidan area of Ordos Basin is complex where relatively high resistivity water layer, relatively low resistivity oil layer coexist with conventional oil-water layer, which causes logging response variable.They can not be identified effectively by logging parameters, resulting in 'missing' of effective reservoirs and misrecognition of water layers.In view of the above situation, combined with the large amount of data of logging, trial production, oil testing and coring analysis for the major oil layers of Chang 81 in Zhidan, focus is laid on individual logging information extraction and comprehensive application of the parameters. The single well radial resistivity contrast method, curves overlap diagram and multi-well data crossplot analysis are used to identify the various types of fluids gradually, and ultimately to identify oil and water layers effectively. A reasonable fluid identification method is formed.
出处
《国外测井技术》
2013年第1期18-20,3,共3页
World Well Logging Technology
基金
"十一五"国家科技支撑计划基金项目资助(2007BAB1701)
关键词
志丹
长81
低阻油
高阻水
油水识别
重叠图
交会图
Zhidan
Chang 81
low-resistivity reservoir
high-resistivity water zone
oil and water identification
overlap plot
cross-plot
