摘要
随着节点在地震勘探中的广泛应用,其质控问题越发突出。节点在“盲采”模式下缺乏实时数据传输能力,无法对单炮数据质量进行实时监控和有效分析,导致地震采集数据合成分析滞后,影响数据质控时效性和勘探决策响应。因此,在有线监控排列与节点相结合的单炮采集模式基础上,针对监控排列地震数据特点,提出了节点“盲采”配套单炮资料实时质控技术。首先,基于球面扩散原理计算单炮能量,实现对单炮能量的准确分析;其次,采用基于干扰道数的环境噪声分析技术,通过计算干扰道占比评估环境噪声;最后,配套开发了实时监控软件,实现单炮激发能量和噪声的实时监控。在四川盆地NCB全节点三维地震采集项目中的应用结果表明,监控排列能量与完整炮能量高度相关,干扰道比例吻合率较高,显著提高了地震勘探效率和资料质量,为节点盲采地震资料实时质控提供了一个有效方法,且在节点5G数据实时传输的商业应用中具有重要价值。
With the widespread application of node instruments in seismic exploration,their quality control(QC)problems become increasingly prominent,and their“blind acquisition”mode lacks real-time data trans-mission capability,making it impossible to monitor and effectively analyze the quality of single-shot data in real time.This results in delays in the synthetic analysis of seismic acquisition data and affects the timeliness of data QC and exploration decision-making responses.Therefore,based on the single-shot acquisition mode combin-ing wired monitoring arrays and node instruments,this paper develops a real-time QC technology for single-shot data acquisition in node instrument“blind acquisition”for the characteristics of seismic data from monitor-ing arrays.Firstly,the single-shot energy is calculated based on the spherical spreading principle to achieve an accurate analysis of single-shot energy.Secondly,an environmental noise analysis technique based on the num-ber of disturbed channels is employed,with the proportion of disturbed channels calculated to assess environ-mental noise.Finally,supporting real-time monitoring software is developed to enable real-time monitoring of single-shot excitation energy and noise.This technology is applied to the full-node 3D seismic acquisition pro-ject in the NCB area of the Sichuan Basin.The results show a high correlation between the energy of the moni-toring array and the full-shot energy,as well as high consistency in the proportion of disturbed channels.This significantly improves seismic exploration efficiency and data quality,provides an effective method for real-time QC of blind acquisition seismic data,and holds significance in the commercial application of 5G real-time data transmission of nodes.
作者
罗文
王勤耕
李明翼
张孟
孙健
何岳明
LUO Wen;WANG Qingeng;LI Mingyi;ZHANG Meng;SUN Jian;HE Yueming(Southwest Geophysical Branch,BGP Inc.,CNPC,Chengdu,Sichuan 610213,China;Exploration Unit of Southwest Oil and Gas Field Branch,PetroChina,Chengdu,Sichuan 610041,China)
出处
《石油地球物理勘探》
北大核心
2025年第4期870-878,共9页
Oil Geophysical Prospecting
关键词
节点
盲采
单炮资料
实时监控
激发能量
外界干扰
node instrument
blind acquisition
single-shot data
real-time monitoring
excitation energy
exter-nal interference
