江汉盆地盐下中-古生界物化探技术方法  

TECHNIQUES AND METHODS OF GEOPHYSICAL EXPLORATION TO MESOZOIC-PALEOZOIC UNDER SALT STRUCTURES IN JIANGHAN BASIN

作　　者：郑天发[1] 杨玉江[2] 

机构地区：[1]江汉石油管理局勘探开发研究院 [2]江汉石油管理局地球物理勘探处

出　　处：《海相油气地质》1996年第2期52-56,共5页Marine Origin Petroleum Geology

摘　　要：江汉盆地中-下古生界地震勘探最主要的矛盾在于盐下层地震反射信噪比极低。开展三种野外采集方法试验,即单线高次覆盖和非纵高次覆盖、宽线高次覆盖,资料品质有明显改善;改变处理流程,可以重新处理老资料;利用物化探嵛料进行圈闭综合评价。提出谢家湾构造深部存在油气且保存较好,石炭系亦有含油气可能。多种物化探资料的综合应用,是江汉盆地中-古生界油气勘探方法的发展方向。The major difficulty of seismic exploration to the Middle -Lower Paleozoic in the basin is that the signal/noise ratio of seismic reflection is very poor under salt structures. Three field acquisition methods have been taken in trial,i.e. the single line multiple coverage,broadside multiple cover- age and broad line multiple coverage.And the data quality has been improved distinctly.The old seismic data could be re-processed with an improved procedure,the trap evalua- tion could be done with the integrate utilization of geophysi- cal and geochemical data,and it is the direction developing the methods of exploration to the Middle-Lower Paleozoic in the basin.

关 键 词：江汉盆地 古生代 地震勘探 盐系 地层 盐矿床 

分 类 号：P619.211[天文地球—矿床学]