拖缆地震资料采集作业中罗经鸟的检测方法

Detection method of compass bird for streamer seismic data acquisition

在拖缆地震资料采集作业中,电缆在水下的深度主要是由罗经鸟调节控制,罗经鸟在使用过程中会因受到碰撞、挂网而造成损坏,或随着在水下使用时间的增加而降低了工作精度,从而影响到地震资料采集质量。因此,采集作业中对罗经鸟的检测是非常重要的一个环节。本文以I/O公司生产的罗经鸟为例,介绍了罗经鸟的结构和工作原理,提出了检测罗经鸟深度、翼角误差的方法,并针对罗经鸟在检测中遇到的问题提出了一些建议。

In the marine streamer seismic data acquisition, the depth of underwater cables is mainly controlled by the com- pass bird, which could be damaged in collision or hanging net. With the growth of underwater time the accuracy of compass bird would be affected, so the compass bird detecting is very important. According to the compass bird of I/O Company, this paper describes the structure and principle of compass bird, presents methods to detect depth and wing angle of compass bird. In addition the paper provides some suggestions for solving common problems for reference.