青海探区震源无桩号施工中测量技术解决方案研讨

Discussion on the solution of measurement technology in the construction of vibroseis stakeless in Qinghai prospecting area

本文主要围绕震源无桩号施工中存在的测量技术问题展开论述。一是针对星站差分ITRF2008框架与青海探区使用成果不一致的问题,利用卫星定位数据处理系统GeoSNAP Base Control,通过GPS控制点换算,求取ITRF2008→BJ54的转换三参数,从而满足利用星站差分所需的转换参数,为无桩号震源施工提供了一套完整的解决方案;二是对COG成果的可靠性进行验证与分析,解析了COG成果文件与测量归档资料之间的差异,并按SY/T 51711《陆上石油物探测量规范》要求,对采集数据的水平精度和垂直精度进行统计分析,根据《地震勘探测量规范》(Q/SY BGP K1208-2019)对地震队的震源组、解释组、测量组分工与合作提出了具体建议。本文提出的措施与方法,为震源无桩号施工在青海探区的推广应用提供了详实的数据支撑。

In this paper, the measurement technology problems existing in the construction of vibroseis stakeless are discussed. Firstly, one is for star standing difference ITRF2008 framework does not agree with using the results of qinghai exploration area, using satellite positioning data processing system GeoSNAP Base Control(hereinafter referred to as the GBC), conversion by GPS Control points, calculate the ITRF2008-BJ54 conversion of the three parameters, so as to meet the using star standing transformation parameters needed for the difference, no pile, the source for the construction provides a complete set of solutions;2 it is to validate the reliability of the results of COG and analysis, parsing the COG outcome document and measuring the difference between the archive, and according to SY/T 5171 "continental petroleum geophysical measurement standard" requirement, to the level of accuracy and precision of vertical acquisition data statistical analysis, according to the code for seismic exploration survey(Q/SY BGP K1208-2019) the source group, the interpretation of seismic crew group, the measure group division of labor and cooperation between the concrete Suggestions are put forward.The measures and methods proposed in this paper provide detailed data support for the extension and application of seismic source pileless construction in exploration area of qinghai.