石油物探2026，Vol.65Issue(1)：1-10,10.DOI:10.12431/issn.1000-1441.2025.0135
OBN采集地震数据二次定位关键方法及其应用效果评价
Key methods for OBN data secondary positioning and assessment of application results:A case study of WX area
摘要
Abstract
Ocean bottom node(OBN)acquisition is an important method in marine seismic exploration for obtaining high-quality data.Node relocation is a crucial quality control step in this process,as its accuracy directly affects imaging quality.Therefore,it is necessary to perform node relocation using OBN data to precisely determine actual node positions.To meet the requirements for high-efficiency high-precision positioning in mass OBN data acquisition,this paper analyzes two methods:least squares-based circle-circle intersection and grid scanning,using field data from WX area.We investigate their principles,accuracy,and efficiency,and implement a quantitative quality control evaluation of their results.Test results indicate a clear advantage in positioning accuracy for the grid scanning method over the circle-circle intersection method;the former achieves errors of less than 2.5 m,meeting operational requirement.The study identifies data type,circular radius,and the spatial uniformity of shot points as the main accuracy determinants for the grid scanning method.The case study of WX area suggests that a radius of 300 m is suitable for node relocation,and more even and symmetrical shot point distribution within the circular area leads to higher positioning accuracy.This study provides a solid foundation for high-quality data acquisition and imaging in Sinopec's marine OBN seismic exploration.关键词
OBN采集/节点二次定位/最小二乘圆-圆相交定位方法/网格扫描定位方法/定位误差/精度评价Key words
OBN acquisition/node secondary positioning/least-squares circle-circle/grid scanning method/positioning error/accuracy evaluation分类
能源科技引用本文复制引用
肖云飞,王昀,黄福强,黄鹏,毛锐强,严泽宇,王一雯..OBN采集地震数据二次定位关键方法及其应用效果评价[J].石油物探,2026,65(1):1-10,10.基金项目
中国石化科技部项目(P24148)资助.This research is financially supported by the Project of the Ministry of Science and Technology of Sinopec(Grant No.P24148). （P24148）
