【摘要】 为适应勘探市场对技术的要求,控制野外施工质量,为现场处理提供更为科学、客观的判断标准,减少人为因素,公平、公正、客观地评价采集资料的品质,提高效率,降低成本,有必要开发功能完善的地震资料定量分析质量控制系统。通过该系统的开发和应用,对采集的地震记录进行科学的定量分析,用科学的方法、量化的数据和可见的图表为野外资料的采集提供新的质量控制手段。本系统依据SY／T5330-1995((陆上二维地震勘探资料采集技术规范》的要求,对爆炸信号、井口信号、不正常道、环境噪音、炮点位置、初至时间、早炮、晚炮、感应、磁带丢码、能量、信噪比、分辨率等地震勘探中可能发生的各种事件进行分析,并进行原始记录质量评价。统计出一级品、二级品、废品率,最后生成野外评价班报。利用该系统对川东北地区通南巴区块的地震资料进行了试评价,取得了比较满意的效果。更多还原

【Abstract】 It is necessary to develop a solid control system for quantitative analysis of seismic data, to meet the demands on field data quality from exploration market, provide objective and scientific criteria for on-site processing, reduce the influence of artificial factors, and increase efficiency as well as decrease cost The system was developed according to China standard SY/ T5330-1995, The Technical Standards for 2-D Land Seismic Data Acquisition. We use quantitative data and charts obtained by scientific methods as new quality control tools for field data evaluation. The system is able to perform analysis of all possible factors in seismic acquisition, such as pit head signals, abnormal traces, ambient noises, shotpoint location, first-arrival time, advanced shots, delayed shots, sensory, discorded codes on magnetic tape, energy, signal-to-noise ratio, and resolution. It performs statistics in terms of first-class, secondary class, and waste rate, etc, and generates a report about the quality of the field data. Satisfactory results have been achieved by applying the system to quality evaluation of seismic data from Tongnanba survey area of eastern Sichuan Province.更多还原