| 延川南地区煤储层特征及煤层和井区优选评价 |
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| 引用本文： | 高和群,丁安徐,韦重韬,龚月,陈雨,韦巍.延川南地区煤储层特征及煤层和井区优选评价[J].中国煤炭地质,2012(10):14-17,25. |
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| 作者姓名： | 高和群 丁安徐 韦重韬 龚月 陈雨 韦巍 |
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| 作者单位： | [1]中国石油化工股份有限公司华东分公司石油勘探开发研究院,江苏扬州225100 [2]中国矿业大学资源与地球科学学院,江苏徐州221116 |
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| 摘 要： | 以延川南地区煤层气井的实验测试数据为基础,采用地质类比法对煤层的含气性及其他储层物性特征进行了对比分析,然后利用最大值标准化法和灰色关联系数法得出单煤层和井区的综合评价分数,并据此对井区进行了综合评价。结果表明,区内甲烷浓度高、含气量大、孔隙性能好、煤层厚度大,但含气饱和度和渗透率低,需要对储层做进一步的压裂改造;通过灰色关联分析,认为各因素的相关关联序为含气量〉含气饱和度〉渗透率〉储层压力〉煤厚〉埋深〉孔隙度〉甲烷浓度,2号煤的开发条件优于10号煤,各井区中以y-3、y-16及y-6井的综合评价值较高,是下一步井网布局和煤层气开发的首选井区。
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| 关 键 词： | 延川南 含气性 储层物性 最大值标准化 灰色关联分析 |
Coal Reservoir Characteristics and Optimization Evaluating of Coal Seams, Well Sites in Yanchuan South Area |
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| Institution: | Gao Hequn, Ding Anxu, Wei Chongtao, Gong Yueand Chen Yu(1.Petroleum Exploration and Exploitation Research Institute, East China Company, China Petroleum ＆ Chemical Corporation, Yangzhou, Jiangsu 225100; 2. School of Resource and Geoscience, CUMT, Xuzhou, Jiangsu 221116) |
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| Abstract: | Based on experimental test data of CBM wells in the Yanchuan South area, using geological analogy method carried out contrastive analysis for coal seam methane-beating property and other reservoir physical properties. After that using maximum normalization method and grey correlation coefficient method gotten out comprehensive evaluation scores of single coal seam and well site, on these grounds carried out well site comprehensive evaluation. The result has demonstrated that the well site has high methane concentration, large methane content, good pore properties, and thick coal seams, but low methane saturation and permeability, thus need to further fracturing for the reservoir. Through grey correlation analysis, considered that the correlation sequence of factors is methane content →methane saturation →permeability →reservoir pressure →coal thickness →buried depth →porosity →methane concentration. The exploitation conditions of No.2 coal seam are superior to that of No.10 coal seam, the comprehensive evaluation values of Y-3, Y-16 and Y-6 wells in well sites are rather high, thus the preferred well sites for next well pattern layout and CBM exploitation. |
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| Keywords: | Yanchuan South methane-bearing property reservoir physical property maximum normalization grey correlation analysis |
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