基于G3iHD的动态滑扫高效采集质控研究及应用

Quality Control Research and Application in High Productivity Acquisition with Dynamic Slip Sweep Based on G3iHD

G3iHD仪器作为目前业界主流的有线地震采集系统之一,已经成功地应用到了中东地区的某动态滑扫高效采集项目,并获得了油公司的认可。在项目实施过程中,如何在高效采集过程中进行有效的质量控制,成为了一大难题。为了确保采集过程中地震数据的正确性,结合G3iHD仪器的特性,从处于生产一线的震源端,到仪器端,再到后方的质控部门(QC,Quality Control),通过对震源的极性和震源的各种属性值、仪器的排列参数和主机采集参数、震源的T-D规则、地震数据的转储和地震数据相关属性等多个方面的分析,进行多角度、全流程的质量控制。在该套质控流程下,项目人员能够在野外生产中较好地鉴别出废炮,及时地发现排列和参数错误,确保野外不出现质量事故,同时也能够保证QC在拷贝上交最终的地震数据时不会出现丢炮和错炮的现象,确保数据完整性,在一定程度上提高了野外生产效率,极大地助力了项目生产。

As one of the industry’s leading wireline seismic acquisition systems,the G3iHD instrument has been successfully applied to a dynamic slip sweep high-efficiency acquisition project in the Middle East.With both data quality and production efficiency echoing the expectations,it has been recognized by the main oil companies.In the process of high channel count high productivity seismic acquisition,how to effectively and efficiently perform quality control of the huge data has become a big challenge.In order to ensure the accuracy of seismic data in the acquisition process,the technicians combine the characteristics of G3iHD instrument and dynamic slip sweep and study a set of QC processes,covering from working vibrators in the field to the recording instrument on site,and then to the quality control department(QC)in base camp.The quality control is carried out by analyzing the polarity and various attribute values of vibrators,the line spread parameters and the acquisition parameters in recording instrument,the T-D rule of dynamic slip sweep,seismic data transferring and the related attribute of seismic data,etc.Under this set of quality control process,technicians can better identify the invalid shots in the field production,ensure the integrity of the huge seismic data when copying and transferring the final seismic data,and ensure the quality of the seismic data acquired to be error free.Meanwhile,through the QC method,the bad shots can be QC in real time on site and the errors of line spread and parameters can be monitored in time in the field,thus,the QC process study also brings great benefits to the productivity and efficiency of field operation.