陆用压电单点检波器研发与应用

发布时间：2018-04-16 03:38

本文选题：陆用压电检波器 + 高精度地震　；参考：《地球物理学进展》2017年06期

【摘要】：目前地震勘探中广泛使用动圈式检波器组合接收地震数据,动圈检波器动态范围只有60 dB、灵敏度低、响应频率范围窄,不能同时检测深层低频地震信号和分辨率所需要的高频信号,使得24位地震仪器120 dB动态范围的指标不能真正发挥作用.检波器组合造成的叠加效应也会在一定程度上降低频率、模糊地震反射特征,已经不能满足当前高精度勘探开发的需求.研究团队经过多年技术攻关,先后攻克了压电陶瓷一致性与抗冲击能力差、低频响应差、电池长期供电等技术难关,自主研发了陆用压电单点检波器,具有频带宽、动态范围大、灵敏度高、兼容性好等优势,技术指标达到或接近了DSU、GAC等国外数字检波器的水平.在实验室测试及多个区块对比实验的基础上,实现了产品定型与工业化生产,在胜利油田东风港三维首次使用了陆用压电检波器进行地震生产,取得了良好的应用效果,对推动东部老油区单点高密度地震技术的进步具有积极的示范作用.
[Abstract]:At present, moving-coil geophone combination is widely used in seismic exploration to receive seismic data. The dynamic range of moving-coil geophone is only 60 dB, the sensitivity is low, and the response frequency range is narrow.The deep low frequency seismic signal and the high frequency signal needed for the resolution can not be detected simultaneously, which makes the index of the dynamic range of 120 dB of the 24 bit seismograph unable to play a real role.The superposition effect caused by geophone combination can also reduce the frequency to a certain extent. The fuzzy seismic reflection characteristics can not meet the needs of high precision exploration and development.After many years of technical research, the research team has overcome the technical difficulties such as poor consistency and impact resistance of piezoelectric ceramics, poor low frequency response, long-term battery power supply and so on.The dynamic range is large, the sensitivity is high, the compatibility is good, and the technical index is up to or close to the level of the foreign digital geophone such as DSU GAC.On the basis of laboratory test and comparison experiment of many blocks, the product is finalized and industrialized production is realized. The first time that land piezoelectric geophone is used for seismic production in Dongfeng Port, Shengli Oilfield, and good application effect has been obtained.It has positive demonstration effect on promoting the advance of single point high density seismic technology in the old oil area of eastern China.
【作者单位】：中国石化胜利油田分公司物探研究院;山东长安特易光电技术有限公司;中国石化地球物理公司胜利分公司;
【基金】：国家科技重大专项课题“地震与井筒精细勘探关键技术”(2016ZX05006-002)资助
【分类号】：P631.4

【相似文献】