| 煤层气测井探测技术的应用 |
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| 引用本文： | 潘建西,王水.煤层气测井探测技术的应用[J].陕西地质,2006,24(2):70-73. |
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| 作者姓名： | 潘建西 王水 |
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| 作者单位： | 陕西省地矿局物化探队,周至,710400 |
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| 摘 要： | 煤田中在煤层附近有煤层气砂岩储层、泥质砂岩储层的存在,声波、密度两种孔隙度测井是进行孔隙度探测的有效方法。但是,当煤层气砂岩储层、泥质砂岩储层含气饱和度较小时,其分辨能力较低,这时就可以利用三测向电阻率,通过阿尔奇公式来计算孔隙饱和度;或是统计计算区内煤层气储层下限值的方法,还可采用孔隙度挖补法,提高识别能力。
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| 关 键 词： | 煤层气 孔隙度探测 三测向电阻率 |
| 文章编号： | 1001-6996(2006)02-0070-04 |
| 收稿时间： | 2006-09-19 |
| 修稿时间： | 2006年9月19日 |
APPLICATION OF WELL LOGGING IN DRILLING COAL BED GAS |
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| PAN Jian-xi,WANG Shui.APPLICATION OF WELL LOGGING IN DRILLING COAL BED GAS[J].Geology of Shaanxi,2006,24(2):70-73. |
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| Authors: | PAN Jian-xi WANG Shui |
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| Institution: | Geophysical and Geochemical Exploration Team of the Shaanxi Bureau of Geology and Mineral Resources, Zhouzhi 710400 |
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| Abstract: | Porosity logging methods examining gas reservoirs of sandstone and argillaceous sandstone through acoustic wave and density are effectively used in coal beds.However,less gas-bearing saturation in the gas reservoirs could reduce the resolution capacity.The method of trilaterally electronic resistivity and calculation of porosity gas-bearing saturation by Archie's formula or statistical calculation of the lower limiting values of the coal-related gas reservoirs in the field,and/or porosity digging and filling method,can be used for improving the resolution capacity. |
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| Keywords: | coal bed gas porosity logging trilaterally electronic resistivity |
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