海底烃类渗漏的地球物理识别

被引:10
作者
李双林
董贺平
肖菲
机构
[1] 青岛海洋地质研究所
关键词
海底烃类渗漏; 地球物理; 渗漏路径; 地球化学校验;
D O I
暂无
中图分类号
P744.4 [石油和天然气];
学科分类号
0824 ;
摘要
海底烃类渗漏在向上运移过程中会改变深部地层和海底表层沉积物的声学性质,在地震和浅地层剖面上会形成各种可能指示烃类渗漏的地球物理标志。渗漏烃到达海底后会改变海底表面形态,形成与海底烃类渗漏有关的表面特征,如麻坑构造、海底凸起、海底古河道、碳酸盐丘、硬地面、泥火山以及表面断层等。渗漏烃进入海水后在继续上升过程中会形成气泡、渗漏羽,到达海面后会形成表面油膜。利用侧扫声纳、多波束测深和浅地层剖面可以探测到与海底烃类渗漏有关的表面特征。合成孔径雷达能够识别因海底烃类渗漏形成的海水表面油膜。海底烃类渗漏的地球物理标志是间接的,必须通过地球化学校验才能确定渗漏的存在。
引用
收藏
页码:14 / 21
页数:8
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