基于MapGIS的大佛寺井田煤层气资源有利区预测
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摘要
大佛寺井田位于彬长矿区的南部,根据勘查钻孔显示煤层含气量低,但煤层厚度较大,煤层气资源量丰富,具有很高的开采利用价值。为了弄清该井田煤层气储藏特征,合理指导有效开采,以大佛寺井田4煤为例,通过对各地质因素与参数井含气量进行相关度分析,确定了影响4煤含气量的几个主控因素,然后依据模糊综合评价的思想建立评判体系,最后在MapGIS平台下实现数据的处理与叠加分析,完成对大佛寺井田4号煤层煤层气资源有利区的预测。研究结果表明:影响大佛寺井田4号煤层含气量的主控因素为:煤层厚度、埋深、变质程度及上下部延安组泥岩厚度,煤层气储藏最有利区、有利区、较有利区、不利区和最不利区分别占井田面积的8%、30%、40%、17%和5%。
Dafosi Minefield is located in the southern part of Binchang Mines. According to the exploration drilling,the gas content of the coal seam is low,however,the coal seam is thicker with rich CBM resources,which has high mining and utilization value. In order to clarify the storage characteristics of CBM reservoir in minefield and reasonable guidance for effective mining,taking the No.4 coal seam of Dafosi Minefield as an example,by analyzing the correlation between the local quality factors and the gas content of parameter wells,the gas content affecting the No. 4 coal seam is determined. Then based on the idea of fuzzy comprehensive evaluation of the evaluation system was established. Finally,data processing and overlay analysis are achieved under the MapGIS platform and the prediction of the favorable coalbed methane resources in the No.4 coal seam of Dafosi Minefield is completed. The research results show that the main controlling factors affecting the gas content of No.4 coal seam in Dafosi Minefield are: coal seam thickness,buried depth,degenerative degree and thickness of mudstone in upper and lower Yan'an Formation. The most favorable areas,favorable areas,more favorable areas,unfavorable areas and the most unfavorable areas for coalbed methane storage accounted for 8%,30%,40%,17%,and 5% of the minefield,respectively.
Dafosi Minefield is located in the southern part of Binchang Mines. According to the exploration drilling,the gas content of the coal seam is low,however,the coal seam is thicker with rich CBM resources,which has high mining and utilization value. In order to clarify the storage characteristics of CBM reservoir in minefield and reasonable guidance for effective mining,taking the No.4 coal seam of Dafosi Minefield as an example,by analyzing the correlation between the local quality factors and the gas content of parameter wells,the gas content affecting the No. 4 coal seam is determined. Then based on the idea of fuzzy comprehensive evaluation of the evaluation system was established. Finally,data processing and overlay analysis are achieved under the MapGIS platform and the prediction of the favorable coalbed methane resources in the No.4 coal seam of Dafosi Minefield is completed. The research results show that the main controlling factors affecting the gas content of No.4 coal seam in Dafosi Minefield are: coal seam thickness,buried depth,degenerative degree and thickness of mudstone in upper and lower Yan'an Formation. The most favorable areas,favorable areas,more favorable areas,unfavorable areas and the most unfavorable areas for coalbed methane storage accounted for 8%,30%,40%,17%,and 5% of the minefield,respectively.
引文
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[20]姚艳斌.基于GIS的华北煤层气资源综合评价[D].北京:中国地质大学(北京),2005.
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[22]张金山,孟国胜,孙家驹.MapGIS在矿产资源评价中的应用[J].工矿自动化,2012,(2):59-63.ZHANG Jinshan,MENG Guosheng,SUN Jiaju.Application of MapGIS in mineral resources evaluation[J].Industry and Mine Automation,2012,(2):59-63.
[2]ZADEH L A.Fuzzy set[J].Information and Control,1965,8(3):338-353.
[3]张晓平.模糊综合评判理论与应用研究进展[J].山东建筑工程学院学报,2003,18(4):90-94.ZHANG Xiaoping.Advance in fuzzy comprehensive evaluation methods theory and application[J].Journal of Shandong University of Architeccture and Engineering,2003,18(4):90-94.
[4]ROBERT C,MILIC I,JOSEPH R,et al.Coalbed methane resources of the Appalachian Basin,Eastern USA[J].International Journal of Coal Geology,2010,82(34):160-170
[5]张卫东,孟庆春.煤层气勘探开发技术进展与展望[J].中国煤层气,2009,6(5):11-13ZHANG Weidong,MENG Qingchun.Progress and prospect of coalbed methane exploration and development technology[J].China Coalbed Methane,2009,6(5):11-13.
[6]孔锐,张哨楠.煤层气储层评价方法的选择[J].地质通报,2012,31(4):586-593.KONG Ri,ZHANG Shaonan.The selection of evaluation methods for coalbed methane(CBM)reservoirs[J].Geological Bulletin of China,2012,31(4):586-593.
[7]刘大锰,姚艳斌,蔡益栋,等.煤层气储层地质与动态评价研究进展[J].煤炭科学技术,2010,38(11):9-16LIU Dameng,YAO Yanbin,CAI Yidong,et al.Study progress on geological and dynamic evaluation of coal bed methane reservoir[J].Coal Science and Technology,2010,38(11):9-16.
[8]黄兴龙.赵官煤田煤层气赋存特征及其控制因素研究[J].煤炭科学技术,2018,46(4):196-201.HUANG Xinglong.Study on occurrence characteristics and controlling factors of coalbed methane in Zhaoguan Coalfield[J].Coal Science and Technology,2018,46(4):196-201.
[9]段新光,栾芳芳.基于模糊综合评判的新疆水资源承载力评价[J].中国人口·资源与环境,2014,24(3):119-122DUAN Xinguang,LUAN Fangfang.Evaluation of water resources carrying capacity in Xinjiang based on fuzzy comprehensive Model[J].China Population:Nat Sci Ed,2014,24(3):119-122.
[10]杜灵通,吕新彪.GIS在矿产资源评价中的应用[J].地质找矿论丛,2003,18(4):275-278.DU Lingtong,LYU Xinbiao.Applications of GIS to mineral resources assessment[J].Contributions to Geology and Mineral Resources Research,2003,18(4):275-278.
[11]曹瑞琅,贺少辉,郭炎伟,等.地质强度指标的模糊综合评判法[J].岩石力学与工程学报,2013,32(2):3100-3108.CAO Ruilang,HE Shaohui,GUO Yanwei,et al.Fuzzy synthetical evaluation method on the system of geological strength index[J].Chinese Journal of Rock Mechanics and Engineering,2013,32(2):3100-3108.
[12]陈龙,徐建民,张河,等.大佛寺区块煤层气勘探开发现状及建议[J].中国煤层气,2017,14(6):33-37CHEN Long,XU Jianmin,ZHANG He,et al.Status and suggestion on CBM exploration and development in Dafosi Block[J].China Coalbed Methane,2017,14(6):33-37.
[13]张进军,昝军才.大佛寺煤矿煤层瓦斯含量及影响因素[C]//西安:陕西省煤炭学会学术年会论文集,2012:53-57.
[14]朱书阶.影响煤层气含量的地质因素分析与定量预测[J].中国煤炭,2011,37(4):45-48.Zhu Shujie.Analysis and quantitative calculation of geological factors affecting coalbed methane content[J].China Coal,2011,37(4):45-48
[15]杨欣超,桑树勋,方良才,等.灰色关联分析在煤层气储层评价中的应用[J].西安科技大学学报,2010,30(2):202-206.YANG Xinchao,SANG Shuxun,FAGN Liangcai,et al.Application of grey relational analysis to evaluation of coalbed methane reservoirs[J].Journal of Xian University of Science and Technology,2010,30(2):202-206.
[16]陈练武.模糊综合评判在韩城矿区煤层气评价中的应用[J].西安地质学院学报,1997,19(1):52-56.CHEN Lianwu.Application of fuzzy comprehensive evaluation to assessment of coal layer gas in Hancheng Mineral District[J].Journal of Xian College of Geology,1997,19(1):52-56.
[17]吴丽萍.模糊综合评价方法及其应用研究[D].太原:太原理工大学,2006.
[18]许雪燕.模糊综合评价模型的研究及应用[D].成都:西南石油大学,2011.
[19]赵璐.基于信息扩散和模糊综合评价方法的矿产资源开发环境风险评价研究[D].成都:成都理工大学,2011.
[20]姚艳斌.基于GIS的华北煤层气资源综合评价[D].北京:中国地质大学(北京),2005.
[21]徐翠玲,钱壮志,梁婷.GIS在矿产资源评价中的应用[J].西安文理学院学报:自然科学版,2008,20(1):29-30.XU Cuiling,QIAN Zhuangzhi,LIANG Ting.Applications of GISinto mineral resources assessment[J].Journal of Xi'an University of Arts&Science:Nat Sci Ed,2008,20(1):29-30.
[22]张金山,孟国胜,孙家驹.MapGIS在矿产资源评价中的应用[J].工矿自动化,2012,(2):59-63.ZHANG Jinshan,MENG Guosheng,SUN Jiaju.Application of MapGIS in mineral resources evaluation[J].Industry and Mine Automation,2012,(2):59-63.
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