超高效混叠地震采集实时质控技术

可控震源超高效混叠地震采集在数据量、记录特征、作业方式等方面均较以往其它高效采集技术存在较大差异,这给野外实时质控技术带来了巨大挑战。为此,研发了一套适应于超高效混叠地震采集作业方式的实时质控技术。通过搭建光纤网络环境,分析连续记录的数据特征,搭建基于用户数据报协议(UDP)的局域网,并分析问题排列出现的时空位置与炮点的对应关系,实现了数据文件的高效传输,连续记录的数据质控,排列状态与质控信息传输以及问题炮信息的实时反馈。融合以上方法形成了超高效混叠地震采集实时质控技术,该实时质控技术在实际应用中能够快速、准确地监测出数万道有线检波器采集的排列和数据质量问题,以及受此影响的不合格炮点,弥补了以往技术不能适应超高效混叠地震采集作业方式的不足,满足了现场对质控精度和效率的要求,达到了及时提醒野外整改排列和补炮的目的,提高了野外施工质量和效率,节约了勘探成本。

Real-time quality control for ultra efficient blended seismic acquisition

The vibroseis ultra efficient blended seismic acquisition differs from the traditional vibroseis seismic acquisition significantly in terms of data size,data characteristics,and operation style.This poses a challenge in terms of real-time quality control.Therefore,a real-time quality control technique suitable for the ultra efficient blended seismic acquisition was developed.This technique consists of deploying a fiber network to analyze the characteristics of the data obtained through continuous seismic recording.A local area network based on the User Datagram Protocol is set up to analyze the relationship between time and locations of spread and shot points.This technique offers highly efficient data transmission,quality control of the continuous record,transmission of the spread status and quality control information,and real-time feedback of bad-shot information.It can quickly and accurately identify quality issues in spreads and data collected through tens of thousands of channels,as well as the bad shots affected by these issues.The proposed real-time quality control technique meets the requirements of ultra efficient blended seismic acquisition,achieves timely response in checking bad spreads and reshooting at bad-shot locations,improves the quality and efficiency of the field operations,and ultimately reduces the exploration cost.