| 井间地震层析成像技术在煤层气压裂监测的应用 |
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| 引用本文： | 袁志亮,孟小红.井间地震层析成像技术在煤层气压裂监测的应用[J].中国煤田地质,2007,19(2):70-71,74. |
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| 作者姓名： | 袁志亮 孟小红 |
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| 作者单位： | [1]中国地质大学,北京100083 [2]中国地质科学院地球物理地球化学堪查研究所,河北廊坊065000 |
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| 摘 要： | 大1-5井和大1-1井是沧县境内的两口煤层气井,为提高产能,增大气体解吸速率,对其进行了压裂施工.为测定压裂效果,使用DST-3井中声波探测系,对大1-1与大1-5两口煤层气井在压裂前后分别进行了地震层析成像测试,层析成像结果显示,压裂后煤层波速有明显下降,且在横向上变化均匀,表示压裂液扩散带基本连通,裂缝发育,压裂效果明显.为了验证层析成像的结果,将煤层气井的测井解释结果与层析成像结果做了对比,结果较吻合.
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| 关 键 词： | 井间地震 声波探测 层析成象 煤层气 压裂 |
| 文章编号： | 1004-9177（2007）04-0070-02 |
| 收稿时间： | 2007-03-28 |
| 修稿时间： | 2007-03-28 |
Application of Cross-borehole Seismic Tomography during CBM Fracturing Monitoring |
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| Yuan Zhiliang, Meng Xiaohong.Application of Cross-borehole Seismic Tomography during CBM Fracturing Monitoring[J].Coal Geology of China,2007,19(2):70-71,74. |
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| Authors: | Yuan Zhiliang Meng Xiaohong |
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| Institution: | 1. China University of Geosciences, Beijing 100083; 2. Geophysical and Geochemical Prospecting Institute, CAGS, Langfang, Hebei 065000 |
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| Abstract: | The DA1-5 and DA1-1 are two CBM wells located in Cangxian County have carried out fracturing for production capacity and gas desorption rate boosting. To take measure of fissuring effectiveness, the DST-3 borehole sonic detector system was used, carried out seismic tomographic testing before and after fracturing of the two CBM wells, the results demonstrated that the wave velocity in coal seam has declined evidently, and evenly changing transversally, showing the fracturing liquid diffusion zones are basically connected, fractures developed, thus the better fracturing effectiveness obtained. For effect justifying, contrasted coal seam well logging results with tomographic results, and they are tally with each other. |
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| Keywords: | cross-borehole seismic prospecting acoustic detection tomography coalbed methane(CBM) fracturing |
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