地震沉积学在浊积砂体识别中的应用  

Application of Seismic Sedimentology in Identification of Turbidite Sand Body

作　　者：朱超[1] 刘占国[1] 宫清顺[1] 黄革萍[1] 周刚[2] 

机构地区：[1]中油杭州地质研究院,浙江杭州310023 [2]中油青海油田分公司,甘肃敦煌736202

出　　处：《特种油气藏》2014年第4期58-62,153,共5页Special Oil & Gas Reservoirs

基　　金：中国石油天然气股份公司重大科技专项(二期)"柴达木盆地基础地质深化研究与战略选区"(2011E-0303)

摘　　要：针对湖相浊积砂体分布预测的难点,以柴达木盆地扎哈泉地区为例,在地震沉积学理论的指导下,运用分频成像、90°相位转换、地层切片及属性分析技术,对目的层段进行了分析研究。研究结果认为:受同沉积逆断层的控制,从上干柴沟早期开始,在昆北、阿拉尔及Ⅷ号逆断层的下盘发育两大浊积扇砂体,4支主水道,平面分布于扎哈泉—绿草滩、跃东、乌南—乌东及扎哈泉南,至上干柴沟中期砂体规模达到最大,平面最大延伸距离达25 km,最大叠合面达300km2,其中扎哈泉—绿草滩井区主水道最为发育,为主要的产油区。As for difficulties in predicting the distribution of lake facies turbidite sand body,the target intervals in Zhahaquan region of Caidam Basin have been studied with the theory of seismic sedimentology,using the frequency division imaging,90° phase transformation,formation slice and attribute analysis technologies. The results indicate that,under the control of synsedimentary abnormal fault,from the early stage of Upper Ganchaigou,two major turbidite fan sand bodies and 4 major water channels developed in Kunbei,Alaer and the lower side of VIII fault. Horizontally,they were distributed in Zhahaquan – Lvcaotan,Yuedong,Wunan –Wudong and southern Zhahaquan. Up to the middle state of Upper Ganchaigou,the sand body extended to the largest scale,and to25 km farthest,with the largest stacking area up to 300 km2. The Zhahaquan – Lvcaotan area features the best development of major channel,which is the major oil producing zone.

关 键 词：地震沉积学 浊积砂体 分频属性 地层切片 扎哈泉地区 

分 类 号：TE122[石油与天然气工程—油气勘探]