利用对应分析法校正火成岩岩性识别图版——以黄骅凹陷为例  

The Correction of Correspondence Analysis to the Lithologic Identification Plate of Igneous Rocks in Huanghua Depression

作　　者：王宏波[1,2] 姚军[2] 李双文[2] 倪长宽[2] 

机构地区：[1]成都理工大学,四川成都610059 [2]中国石油勘探开发研究院西北分院,甘肃兰州730020

出　　处：《天然气地球科学》2013年第4期719-724,共6页Natural Gas Geoscience

基　　金：中国石油天然气股份有限公司项目(编号:2008-030504)资助

摘　　要：黄骅凹陷火成岩岩性极其复杂多样,如何对该区火成岩岩性进行准确识别一直是个棘手的问题。为此,在岩心观察和薄片鉴定的基础上,建立了基于常规测井曲线的黄骅凹陷火成岩岩性识别图版。由于图版中岩性存在重叠以及可用测井曲线种类相对较少,影响了图版应用的准确性。因此为了更为准确地识别火成岩岩性,首先利用对应分析法分析了测井响应与火成岩岩性的关系,计算出各曲线对火成岩各岩性的敏感系数(以权值形式给出),然后确定各曲线对不同岩性的灵敏度,最后利用对应分析法权值对火成岩岩性识别图版进行了校正,并用实例进行了验证,校正效果较好。In Huanghua Depression igneous reservoir is widely developed both in the vertical and horizon di-tection. Its lithologies are very complex, so it＇s always difficult to identify the lithologies of igneous rocks for geologists. On the basis of core observation and thin slice analysis, log response of various igneous rocks was studied,and a lithologic identification plate of igneous rocks based on conventional well logs in Huang- hua Depression was established. In view of the limited types of available well logs and the overlapping re- gions in plates,in order to identify the lithologies of igneous rocks more accurately and effectively, the rela- tionship between log response and lithologies of igneous rocks by correspondence analysis was firstly ana- lyzed. The sensitivity coefficient of well logs for various igneous rocks （represented with the right value） was then calculated,and the sensitivity of well logs for various igneous rocks was established. Then the li- thologic identification plate of igneous rocks with the right value of correspondence analysis combined with the log response of various igneous rocks was corrected. After validation,the result of correction to lithol-ogic identification plate of igneous rocks by correspondence analysis obtained very good effect in Huanghua Depression.

关 键 词：火成岩 测井响应 岩性识别 对应分析 

分 类 号：TE122.222[石油与天然气工程—油气勘探]