适用于陆上石油勘探的地震检波器

发布时间：2018-12-14 14:07

【摘要】：陆上石油勘探中采用过多种基于不同工作原理的检波器(如动圈式模拟检波器、MEMS数字检波器、涡流检波器、电化学检波器及光纤检波器等),而实际地震数据采集中多年来一直是动圈式模拟检波器(如SM-4、20DX等)占据主导地位。通过分析地震采集阶段信号、噪声的特性以及地震检波器的性能指标及其与地球物理特征之间的关系,提出了检波器类型对比试验的设计原则、采集阶段初步评估地震资料的方法。认为在当前去噪能力下(即通过后续压噪手段、仍难以将机械属性的环境噪声、原生噪声及次生噪声衰减到与电噪声属性的本底噪声相当的水平),对于垂直分量而言,以20DX为代表的动圈式检波器仍是数据合格、费用合理、施工方便的高效率检波器;同时指出了某些新型检波器存在的不足及今后陆用检波器的发展方向。
[Abstract]:Many geophone based on different working principle have been used in onshore petroleum exploration (such as moving-coil analog geophone, MEMS digital geophone, eddy current detector, electrochemical geophone and optical fiber detector, etc.), The actual seismic data acquisition has been dominated by the moving-coil analog geophone (such as SM-4,20DX, etc.) for many years. By analyzing the characteristics of signal, noise, geophone performance and geophysical characteristics in seismic acquisition stage, the design principle of geophone type contrast test is put forward. The method of preliminary evaluation of seismic data in acquisition stage. It is considered that for vertical components, it is still difficult to attenuate the environmental noise, primary noise and secondary noise of mechanical attributes to a level comparable to the background noise of electrical noise attributes under the prior denoising capability (that is, by means of subsequent noise reduction). The movable coil geophone represented by 20DX is still a high efficient geophone with qualified data reasonable cost and convenient construction. At the same time, the shortcomings of some new geophone and the development direction of land geophone in the future are pointed out.
【作者单位】：中国石化石油工程地球物理公司胜利分公司;
【分类号】：P631.436

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