| 随钻地震的钻头震源研究 |
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| 引用本文： | 韩继勇. 随钻地震的钻头震源研究[J]. 西安石油大学学报(自然科学版), 1998, 0(2) |
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| 作者姓名： | 韩继勇 |
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| 作者单位： | 西安石油学院石油工程系 |
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| 摘 要： | 对随钻地震技术中的钻头震源进行了理论研究，重点分析了钻头冲击井底岩石产生的张性波和体波．纵波主要沿着井轴传播；横波主要沿着垂直于井轴的平面传播．现场考察了各种波（包括次生波）在随钻地震剖面上的特征．这些由钻头产生的波具有不同的延迟时间，它是井口偏移距和钻头深度的函数，建立了时距曲线方程．研究这些波的类型可为随钻地震技术的野外井场施工提供一定的依据，对钻头产生波场解释是很有必要的．
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| 关 键 词： | 震源，地震波，钻井／［随钻地震］ |
A Study on Seismic Source of a Bit in Selsm While Drilling |
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| Han Jiyong. A Study on Seismic Source of a Bit in Selsm While Drilling[J]. Journal of Xian Shiyou University, 1998, 0(2) |
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| Authors: | Han Jiyong |
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| Abstract: | The seismic source of a bit in seism while drilling is studied in theory. When a bit impactsbottom hole,the extensional wave travehing along strllng string and the body wave radiating into formation are generated. Compressional wave travels mainly in the direction of borehole axis,and shear wave radiates mainly on the plane perpendicular to the axis. The characteristics of each event of seismic profile while drilling are analysed. It is found that the delay time of each wave is different ,which is a function of wellhcad offset distance and the well depth in which the bit is. The time distance curve is established. A knowledge of the wave modes is essential to well site construction and interpretation of wave field generated by the bit in seism while drilling. |
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| Keywords: | :seismic source seismic wave drilling/[seism while drilling] |
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