摘要
以带通滤波取得的磁异常为基础数据,采用三维磁化率物性反演,搞清了方正地区的磁化率在三维空间的变化特征,认为三维磁化率物性反演能够识别一定规模的火山岩,并具有一定的可靠性.利用带通滤波、三维物性反演成果及钻井资料预测的方正断陷火山岩分布规律表明：方正断陷火山岩主要由5个火山岩体（以气孔状、杏仁状玄武岩为主）组成,其中的大林子火山岩体因受断裂控制具有较好的油气勘探前景.
On the basis of the magnetic anomaly data obtained from the band-pass filtering, by means of the physi- cal property inversion of the 3D magnetic susceptibility, the 3D-space changed characteristics of the susceptibility in Fangzheng area are made clear, a certain scale of volcanic rocks can be recognized by the inversion and moreover the reliability is ensured in some degree. With the help of the band-pass filtering, inverted results of 3D physical properties and drilling data, the predicted laws of the volcanic distribution in Fangzheng Fault Depression show that in the depression, there are mainly five volcanic bodies （ taking vesicular, amygdaloidal basalts as the main forms） in the volcanic rocks, among them, due to the control of the faults, there is much better petroleum exploration prospects for Dalinzi volcanic body.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2014年第6期155-159,共5页
Petroleum Geology & Oilfield Development in Daqing
基金
国家重点基础研究发展计划“973”项目(2009CB219307)
关键词
方正断陷
磁异常
带通滤波
三维磁化率反演
火山岩
Fangzheng Fault Depression
magnetic anomaly
band-pass filtering
3D magnetic susceptibility inversion
volcanic rocks
