几种双船地震施工方法  

Several kinds of operation methods for undershooting mode in marine exploration

作　　者：李艳青[1] 

机构地区：[1]中海油田服务股份有限公司物探事业部,天津塘沽300451

出　　处：《物探装备》2014年第5期298-301,共4页Equipment for Geophysical Prospecting

摘　　要：随着科学技术的发展,海洋油气勘探目的层由浅部向深部发展。工业化生产要求采用的拖缆长度越来越长,但是受到外部环境的影响,如海流和障碍物的影响,长缆不易在海上施工。如果采用双船作业,就可以通过调节船距来控制拖缆的最大偏移距,从而实现长缆作业。其次,随着勘探需求的增加,宽方位和广角反射勘探成为解决某些特定地质问题的手段。本文旨在对几种应用比较成熟的双船作业关键技术进行分析。With the development of science and technology, the target layer of marine oil and gas exploration changed from shallow to deep operation, therefore required the longer and longer streamer lengths, but the external environment, such as flow and obstacle, will influence the long streamer working. The undershooting mode can used to adjust the boat distance then to control the maximum offset of longs streamer, in addition, a wide range and wide angle reflection exploration can be used to solve some specific geological problem means. This paper introduced the appli- cation of several kinds of advanced and sophisticated technologies of undershooting streamer.

关 键 词：拖缆地震 双船作业 CLO 宽方位角 广角反射 

分 类 号：P631.46[天文地球—地质矿产勘探]