海上多波多分量地震采集技术的应用――以莺歌海盆地为例

近年来,近海多波多分量(一般称为四分量)地震技术发展很快,相继取得了较成功的应用和令人满意的勘探效果。成功的一个主要原因是采集技术(OBC技术)已经基本成熟,能够在近海得到质量较高的地震数据。海上多波多分量地震采集就是在海底应用三分量速度检波器测量速度场的X分量、Y分量和Z分量,并用水听器测量应力场。海上多波多分量地震采集系统主要包括记录子系统、震源子系统、电缆子系统、声学子系统、综合导航子系统和质控子系统。多波采集作业方式以双船(震源船和记录船)、双边放炮作业为主,双船的控制主要由数据连接系统实现。

THE OFFSHORE MULTI-WAVES AND MULTI-COMPONENTS SEISMIC ACQUISITIONTECHNIQUE--A CASE STUDY OF YINGGEHAI BASIN

Offshore multi-waves and multi-components seismic technique is been made much progress.Succeeding apply was got and its exploration effect was good.The main one of reasons of succeeding was the acquisition technique (OBC) was basicly mature.The high quality seismic data was gotten on offshore.Usually,we use three components velocity detector to measure X-component,Y-component and Z-component of velocity field.We use the hydrophone tu measure stress field.The offshore multi-waves and multi-components seismic acquisition system include mainly receive subsystem,focus subsystem,cable subsystem,acoustics subsystem,navigation subsystem and quality control subsystem.The main acquisition manner is using two sailers and double-lines firring a gun to get seismic data.The data connecting system controls two sailers.