地震分频成像技术在火山岩旋回识别中的应用  

Application of Frequency-Divided Imaging Technique to Identification of Volcanic Eruption Cycles

作　　者：朱超 黄革萍 宫清顺 吴义平[2] 蒋俊超[2] 

机构地区：[1]中国石油杭州地质研究院,杭州310023 [2]中国石油勘探开发研究院,北京100083

出　　处：《新疆石油地质》2013年第5期580-582,共3页Xinjiang Petroleum Geology

基　　金：中国石油"十一五"基础研究课题(P08045)

摘　　要：二连盆地赛汉塔拉凹陷侏罗系阿尔善组三段火山岩以喷溢相为主,厚度较薄,钻穿井较少。通过单井资料分析认为,该区阿尔善组存在4期火山喷发活动。针对火山岩体非均质性较强的特征,探索性地将地震分频成像技术引用到火山岩旋回识别中,通过改善地震资料分辨率,有效地预测出各期喷发旋回的规模及厚度,较好地指导了火山岩油气勘探。Volcanic rocks dominated by eruptive facies are developed in the third member of Aershan formation of Jurassic in Saihantala sag in Erlian basin, with thin thickness and few wells penetrating into the rocks. It is suggested from well data analysis that there exited four stages of volcanic eruptions in Aershan period. In view of the strong heterogeneity of such volcanic rock bodies, this paper presents the ex- ploratory application of frequency-divided imaging technique to the identification of volcanic eruption cycles. By improving resolution of the seismic data, the scale and thickness of each eruption cycle are effectively predicted, providing a powerful support for petroleum explo- ration of volcanic reservoirs in this area.

关 键 词：分频成像 技术 薄层预测 火山岩 喷发旋回 

分 类 号：P631.445.1[天文地球—地质矿产勘探]