| 鄂尔多斯盆地东缘桑峨区煤层气分压合采可行性分析 |
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| 引用本文： | 熊 涛,孙国忠,池 斌,等.鄂尔多斯盆地东缘桑峨区煤层气分压合采可行性分析[J].中国煤炭地质,2013(12):52-54. |
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| 作者姓名： | 熊 涛 孙国忠 池 斌 等 |
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| 作者单位： | 中煤地质工程总公司北京大地特勘分公司,北京100161 |
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| 摘 要： | 在煤层层数较多的地区进行煤层气开采时，如果实施分层压裂、合层排采的技术，可以有效的降低煤层气的勘探开发成本，还可以提高单井产气量。研究分析此项技术的使用条件可以有效的提高多煤层合采的成功率。桑峨区内煤层层多，煤层结构较简单，厚度变化较小，是煤层气开发的较有利区块，在对直井产气特征研究的基础上，系统分析了主要煤层储层压力、压力梯度、临界解吸压力、储层渗透率、上下围岩特征等因素对合采的影响，认为研究区三套主力煤层基本符合分压合采的要求，可以考虑采用合层排采的方法来降低煤层气开采成本。
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| 关 键 词： | 煤层气 分层压裂 合层排采 影响因素 桑峨区 鄂尔多斯盆地东缘 |
Feasibility Study of Separate Layer Fracturing and Multi-layer Drainage for CBM in Sange Area,Eastern Margin of Ordos Basin |
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| Xiong Tao,Sun Guozhong,Chi Bin,Sun Pengjie.Feasibility Study of Separate Layer Fracturing and Multi-layer Drainage for CBM in Sange Area,Eastern Margin of Ordos Basin[J].Coal Geology of China,2013(12):52-54. |
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| Authors: | Xiong Tao Sun Guozhong Chi Bin Sun Pengjie |
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| Institution: | (Beijing Dadi Special Exploration Branch, China Coal Geological Engineering Corporation,Beijing 100161) |
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| Abstract: | During the CBM reservoir exploitation in an area with multiple coal seams, if applying separate layer fracturing and multi- layer drainage technology, the cost of CBM exploration and exploitation can be reduced effectively, in addition, it can increase single- well gas production rate. Research and analysis on the using condition of such technology may improve the success rate of coal seam multi-layer drainage. There are many coal seams with simple structures and small variation of thickness in the Sange area, thus a favor- able block to CBM exploitation. Based on vertical well gas production characteristic study, the paper systemically analyzed the influenc- ing factors of main coal reservoir pressure, pressure gradient, critical desorption pressure, reservoir permeability and over.lying, underly- ing surrounding rock features in this area to multi-layer drainage. The analysis indicates that the three sets of main coal seams in the study area basically meet the requirement of separate layer fracturing and multi-layer drainage; meanwhile, it can reduce CBM exploi- tation c, ost. |
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| Keywords: | CBM separate layer fracturing multi-layer drainage influencing factors Sange area eastern margin of Ordos Basin |
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