大庆地区的三维AVO分析研究  

3D AVO analysis in Daqing area.

作　　者：付雷[1] 刘财[1] 李勤学[2] 王建民[2] 刘振彪[2] 崔凤林[2] 孔祥波[2] 

机构地区：[1]吉林大学地球探测与信息技术学院 [2]大庆石油管理局地球物理勘探公司

出　　处：《石油地球物理勘探》2004年第6期697-700,710,共5页Oil Geophysical Prospecting

摘　　要：随着野外地震勘探采集方法的不断改进 ,野外采集的道数逐渐增多 ,炮检距、覆盖次数也随之增大 ,地震资料的信噪比明显提高 ,尤其是 AVO技术的日臻完善 ,有必要对大庆地区地震资料的 AVO特性进行重新认识 ,以便更好地进行岩性识别及油气异常检测。本次 AVO研究的区域选在宋站升 81井三维工区 ,通过对升 81井的 Inline1 4 2线进行 AVO处理分析 ,得到了明显的 AVO异常 ,并利用与升 81井相关的测井曲线进行了 AVO正演 ,结果证实升 81井确实存在 AVO异常。利用三维 AVO分析技术还发现了深层火山岩 ,初步确定了火山岩喷发的通道位置。The offsets and folds increased along with the constant improvement of seismic field acquisition methods and the gradual increase of field-acquired channels,and S/N ratio of seismic data has been greatly improved,especially along with the gradual improvement of AVO techniques,it is necessary to renew the knowledge of the AVO characters of seismic data in Daqing area in order to better identify the lithology and detect the oil/gas anomaly.The area of the AVO study is selected in 3D work area of Songzhan Sheng-81 well,the obvious AVO anomaly is obtained from the AVO processing and analysis for inline 142 of Sheng-81 well and AVO forward modeling is carried out by using logging trace associated with Sheng-81 well,the results proved that there exists AVO anomaly in Sheng-81 well.The deep volcanite is discovered by 3D AVO techniques and the channel position of volcanic eruption is preliminarily determined.

关 键 词：AVO 地震资料 火山岩 覆盖次数 炮检距 正演 地震勘探 油气 深层 岩性识别 

分 类 号：TE122[石油与天然气工程—油气勘探] P631[天文地球—地质矿产勘探]