| 一次中尺度波速测量结果 |
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| 引用本文： | 李兴才,喻武星,石汝斌,王鸣,杨若义.一次中尺度波速测量结果[J].地震学报,1986,8(3):334-337. |
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| 作者姓名： | 李兴才 喻武星 石汝斌 王鸣 杨若义 |
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| 作者单位： | 1. 国家地震局地球物理研究所
2. 吉林省油田管理局 |
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| 摘 要： | 1982年底在吉林油田的一组深约400m的井孔中作了一次中尺度声波测量,指出岩层P波的波速表现出明显的各向异性.根据现场地质情况,对岩心的观察及渗透性的各向异性指出,波速的各向异性主要是断层和具有优势取向的宏观裂纹引起的,而裂纹的取向与构造应力场是有关的.
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IN-SITU VELOCITY MEASUREMENTS |
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| Institution: | 1. Institute of Geophysics, State Seismological Bureau;
2. Jilin Provincial Oil Field |
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| Abstract: | In-situ velocity measurements which were carried out at a set of wells about 400 meters deep in the Jilin provincial oil field in 1982 indicate that anisotropy of P-wave velocity is distinct. Based on in-situ geological study in the field, analysis of rock samples and the anisotropy of permeability of cores, it is pointed out that the anisotro-py of P-wave velocity is mainly caused by faults and directional of cracks; and the orientation of cracks is correspondent with the stress state in the Song Liao basin. |
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