车排子地区东北部火山岩岩性-测井相特征及识别

Identification and Characteristics of Lithology-Logging Facies for Volcanic Rock in the Northeast of Chepaizi Area

基于岩心观察、薄片鉴定、常规测井及成像测井等资料,以车排子地区东北部石炭系发育的6种优势岩性为研究对象,通过对不同岩性的测井响应参数特征、测井曲线特征及成像图形特征的分析和探讨,明确了研究区6种优势火山岩的岩性-测井相特征.在此基础上,综合考虑火山岩成分、结构及识别的方便程度,利用成像测井法、多参数交会图法及Fisher判别法,建立了一套适用于该地区火山岩岩性测井识别的图版和标准,并将最终识别结果与岩心鉴定结果进行对比验证,准确率达到85%以上.

Based on core observation,thin-section examination,conventional and imaging logging data,the six kind of advantage lithology in carboniferous of Chepaizi area are used as examples and the characteristics of volcanic lithology-logging facies has been established by analyzing the well logging parameter,curve characteristics and imaging logging on the structure and tectonic features of different lithology. Then taking comprehensive consideration of volcanic composition,structure and the convenience of identification,the plates and criterion are established by using imaging logging,some multi-parameter crossplots and fisher discriminant analysis for logging recognition,and the identification result shows that the coincidence rate of recognition to the named data from cores wafer reaches 85%.