滇东黔西多煤层地区煤层气“层次递阶”地质选区指标体系构建
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摘要
针对滇东黔西多煤层、高地应力和构造复杂等地质特点,在明确提出煤层气地质选区过程中的有利区、甜点区和甜点段概念的基础上,阐明了3者之间"层次递阶"的关系。有利区指从滇东黔西的众多次级向斜中优选有利向斜,甜点区指从有利向斜中优选煤层气开发"靶区",甜点段是在煤层气开发"靶区"内从垂向上优选组合层段。针对研究区次级向斜多,勘探程度差异大,许多参数无法统一的特点,在有利区优选指标体系中提出了煤层气地质资源量、地质资源丰度和可采资源量相结合的关键指标,煤层气地质资源量和地质资源丰度为一票否决指标;针对研究区构造复杂和高地应力的特点,在甜点区优选指标体系中提出了断层分维值、构造曲率及埋深相结合的关键指标,断层分维值为一票否决指标;针对研究区多煤层发育,易诱发层间干扰的特点,在甜点段优选指标体系中提出了煤体结构、临界解吸压力差和储层压力梯度差相结合的关键指标,煤体结构为一票否决指标;并在各个阶段均提出了相应的参考指标,最终构建了针对研究区特点具有区域特色的煤层气地质选区指标体系。
In terms of the geological characteristics of multiple coal seams,high crustal stress and complex tectonic in eastern Yunnan and western Guizhou,the concept of favorable area,dessert area and vertical dessert in the process of coalbed methane( CBM) geological selection was put forward,and the relationship of "Hierarchical progressive"between the three was clarified.The favorable area refers to the favorable syncline in a number of secondary syncline.The dessert area refers to the "target area"for the development of CBM from favorable syncline. The vertical dessert is a vertical optimization of the combination layer in the "target area"of CBM development.The key indexes of CBM geological resources,geological resources abundance and recoverable resources were put forward in the optimization index system of favorable area aimed at the characteristics of a large of secondary syncline,great difference in many parame-ters and exploration degree.The amount of CBM geological resources and the abundance of CBM geological resources are one vote veto.The key indexes of fault fractal dimension,tectonic curvature and buried depth were proposed in the optimization index system of the dessert area aimed at the characteristics of complex tectonic and high crustal stress in the study area.The fractal dimension value of the fault is one vote veto. The key indexes of coal structure,critical desorption pressure difference and reservoir pressure gradient difference were put forward in the optimization index system of the vertical dessert aimed at the characteristics of the development of multiple coal seams and the interlayer interference in the study area.The coal structure is one vote veto.In all stages,the corresponding reference indexes were put forward.Finally,the index system of CBM geological selection for the characteristics of the study area was constructed.
In terms of the geological characteristics of multiple coal seams,high crustal stress and complex tectonic in eastern Yunnan and western Guizhou,the concept of favorable area,dessert area and vertical dessert in the process of coalbed methane( CBM) geological selection was put forward,and the relationship of "Hierarchical progressive"between the three was clarified.The favorable area refers to the favorable syncline in a number of secondary syncline.The dessert area refers to the "target area"for the development of CBM from favorable syncline. The vertical dessert is a vertical optimization of the combination layer in the "target area"of CBM development.The key indexes of CBM geological resources,geological resources abundance and recoverable resources were put forward in the optimization index system of favorable area aimed at the characteristics of a large of secondary syncline,great difference in many parame-ters and exploration degree.The amount of CBM geological resources and the abundance of CBM geological resources are one vote veto.The key indexes of fault fractal dimension,tectonic curvature and buried depth were proposed in the optimization index system of the dessert area aimed at the characteristics of complex tectonic and high crustal stress in the study area.The fractal dimension value of the fault is one vote veto. The key indexes of coal structure,critical desorption pressure difference and reservoir pressure gradient difference were put forward in the optimization index system of the vertical dessert aimed at the characteristics of the development of multiple coal seams and the interlayer interference in the study area.The coal structure is one vote veto.In all stages,the corresponding reference indexes were put forward.Finally,the index system of CBM geological selection for the characteristics of the study area was constructed.
引文
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[13]张军建,韦重韬,陈玉华,等.多煤层区煤层气开发优选评价体系分析[J].煤炭科学技术,2017,45(9):13-17.ZHANG Junjian,WEI Chongtao,CHEN Yuhua,et al.Analysis on optimized evaluation system of coalbed methane development in multi seams area[J].Coal Science and Technology,2017,45(9):13-17.
[14]王肖.滇东老厂矿区煤层气地质特征及甜点区段优选[D].徐州:中国矿业大学,2017:1-84.WANG Xiao.Geological characteristic of coalbed methane and optimization of sweet spots in laochang mining area of eastern Yunnan Province[D].Xuzhou:China University of Mining and Technology,2017:1-84.
[15]秦勇,傅雪海,韦重韬,等.煤层气成藏动力条件及其控藏效应[M].北京:科学出版社,2012:257-278.
[16]王安民,曹代勇,魏迎春.煤层气选区评价方法探讨——以准噶尔盆地南缘为例[J].煤炭学报,2017,42(4):950-958.WANG Anmin,CAO Daiyong,WEI Yingchun.Discussion on methods for selected areas evaluation of coalbed methane:A case study of southern Junggar basin[J].Journal of China Coal Society,2017,42(4):950-958.
[17]高弟,秦勇,易同生.论贵州煤层气地质特点与勘探开发战略[J].中国煤炭地质,2009,21(3):20-23.GAO Di,QIN Yong,YI Tongsheng.Geological condition,exploration and exploitation strategy of coal-bed methane resources in Guizhou,China[J].Coal Geology of China,2009,21(3):20-23.
[18]李建林,崔延华,王心义,等.基于分形的平煤七矿断层构造研究[J].河南理工大学学报(自然科学版),2016,35(4):493-496,519.LI Jianlin,CUI Yanhua,WANG Xinyi,et al.Study on the fault structure of No.7 coal mine of Pingdingshan based on fractal theory[J].Journal of Henan Polytechnic University(Natural Science),2016,35(4):493-496,519.
[19]陈金刚.构造曲率对煤储层渗透率的控制关系[J].西部探矿工程,2010,22(6):149-150.CHEN Jingang.Control relation of structural curvature to coal reservoir permeability[J].West-China Exploration Engineering,2010,22(6):149-150.
[20]陈金刚,张景飞.构造对高煤级煤储层渗透率的系统控制效应——以沁水盆地为例[J].天然气地球科学,2007,18(1):134-136.CHEN Jingang,ZHANG Jinfei.Systematic control effect of structures on permeability of high coal rank reservoirs[J].Natural Gas Geoscience,2007,18(1):134-136.
[21]林然,倪小明,王延斌.山西沁水盆地樊庄区块煤层气高产区预测[J].高校地质学报,2012,18(3):558-562.LIN Ran,NI Xiaoming,WANG Yanbin.Prediction of high CBM production area in the Fanzhuang block of the Qinshui basin,Shanxi Province[J].Geological Journal of China Universities,2012,18(3):558-562.
[22]沈哲,傅雪海,王可新,等.常村煤矿煤与瓦斯突出区域预测[J].煤炭科学技术,2010,38(1):38-41,84.SHEN Zhe,FU Xuehai,WANG Kexin,et al.Prediction of coal and gas outburst area in Changcun mine[J].Coal Science and Technology,2010,38(1):38-41,84.
[23]徐宏杰,桑树勋,易同生,等.黔西地区煤层埋深与地应力对其渗透性控制机制[J].地球科学-中国地质大学学报,2014,39(11):1507-1516.XU Hongjie,SANG Shuxun,YI Tongsheng,et al.Control mecganism of buried deptg and in-situ stress for coal reservoir permeability in western Guizhou[J].Earth Science-Journal of China University of Geosciences,2014,39(11):1507-1516.
[24]姜玮.多煤层区煤层气单井压裂/排采模式研究—以织纳煤田为例[D].徐州:中国矿业大学,2015:1-204.JIANG Wei.Study on the CBM single well’s fracturing/drainage model of multi-coalbeds area in Zhina coal field[D].Xuzhou:China University of Mining and Technology,2015:1-204.
[25]秦勇,申建,沈玉林.叠置含气系统共采兼容性——煤系“三气”及深部煤层气开采中的共性地质问题[J].煤炭学报,2016,41(1):14-23.QIN Yong,SHEN Jian,SHEN Yulin.Joint mining compatibility of superposed gas-bearing systems:A general geological problem for extraction of three natural gases and deep CBM in coal series[J].Journal of China Coal Society,2016,41(1):14-23.
[26]吴胜和,曾溅辉,林双运,等.层间干扰与油气差异充注[J].石油实验地质,2003,25(3):285-289.WU Shenghe,CENG Jianhui,LIN Shuangyun,et al.Interlayer interference and differential injection of hydrocarbon into a trap[J].Petroleum Geology&Experiment,2003,25(3):285-289.
[2]李辛子,王运海,姜昭琛,等.深部煤层气勘探开发进展与研究[J].煤炭学报,2016,41(1):24-31.LI Xinzi,WANG Yunhai,JIANG Zhaochen,et al.Progress and study on exploration and production for deep coalbed methane[J].Journal of China Coal Society,2016,41(1):24-31.
[3]CHENG Yuanping,WANG Liang,LIU Hongyong,et al.Definition,theory,methods,and applications of the safe and efficient simultaneous extraction of coal and gas[J].International Journal of Coal Science&Technology,2015,2(1):52-65.
[4]叶建平,陆小霞.我国煤层气产业发展现状和技术进展[J].煤炭科学技术,2016,44(1):24-28,46.YE Jianping,LU Xiaoxia.Development status and technical progress of China coalbed methane industry[J].Coal Science and Technology,2016,44(1):24-28,46.
[5]李五忠,孙斌,孙钦平,等.以煤系天然气开发促进中国煤层气发展的对策分析[J].煤炭学报,2016,41(1):67-71.LI Wuzhong,SUN Bin,SUN Qinping,et al.Analysis on coalbed methane development based on coal measure gas in China and its countermeasure[J].Journal of China Coal Society,2016,41(1):67-71.
[6]郭乐乐,汤达祯,许浩,等.黔西滇东地区不同煤阶煤储层物性特征分析[J].煤炭科学技术,2014,42(8):99-103.GUO Lele,TANG Dazhen,XU Hao,et al.Analysis on physical property features of different coal rank coal reservoirs in western Guizhou and eastern Yunnan area[J].Coal Science and Technology,2014,42(8):99-103.
[7]顾成亮.滇东-黔西地区煤层气地质特征及远景评价[J].新疆石油地质,2002,23(2):106-110.GU Chengliang.Geological characteristics and prospect evaluation on coal-seam gas in east Yunnan and west Guizhou areas[J].Xinjiang Petroleum Geology,2002,23(2):106-110.
[8]沈玉林,秦勇,郭英海,等.黔西上二叠统含煤层气系统特征及其沉积控制[J].高校地质学报,2012,18(3):427-432.SHEN Yulin,QIN Yong,GUO Yinghai,et al.The upper permian coalbed methane bearing system and its sedimentary control in western Guizhou,China[J].Geological Journal of China Universities,2012,18(3):427-432.
[9]秦勇,熊孟辉,易同生,等.论多层叠置独立含煤层气系统——以贵州织金-纳雍煤田水公河向斜为例[J].地质论评,2008,54(1):65-70.QIN Yong,XIONG Menghui,YI Tongsheng,et al.On unattached multiple superposed coalbed-methane system:In a case of the Shuigonghe syncline,Zhijin-Nayong coalfield,Guizhou[J].Geological Review,2008,54(1):65-70.
[10]罗金辉,杨永国,秦勇,等.基于组合权重的煤层气有利区块模糊优选[J].煤炭学报,2012,37(2):242-246.LUO Jinhui,YANG Yongguo,QIN Yong,et al.Fuzzy optimization for CBM favorable targets based on combined weights[J].Journal of China Coal Society,2012,37(2):242-246.
[11]张春朋,吴财芳,李腾,等.主成分分析法在煤层气选区评价中的应用[J].煤炭科学技术,2016,44(8):137-142.ZHANG Chunpeng,WU Caifang,LI Teng,et al.Principal component analysis method applied to evaluation on coalbed methane block selection[J].Coal Science and Technology,2016,44(8):137-142.
[12]姜玮,吴财芳.织纳煤田煤储层弹性能及其对有利选区的控制作用[J].煤炭学报,2011,36(10):1674-1678.JIANG Wei,WU Caifang.Flexibility energy of coal-bed gas reservoir in Zhina coalfield and their control function on the favorable areas[J].Journal of China Coal Society,2011,36(10):1674-1678.
[13]张军建,韦重韬,陈玉华,等.多煤层区煤层气开发优选评价体系分析[J].煤炭科学技术,2017,45(9):13-17.ZHANG Junjian,WEI Chongtao,CHEN Yuhua,et al.Analysis on optimized evaluation system of coalbed methane development in multi seams area[J].Coal Science and Technology,2017,45(9):13-17.
[14]王肖.滇东老厂矿区煤层气地质特征及甜点区段优选[D].徐州:中国矿业大学,2017:1-84.WANG Xiao.Geological characteristic of coalbed methane and optimization of sweet spots in laochang mining area of eastern Yunnan Province[D].Xuzhou:China University of Mining and Technology,2017:1-84.
[15]秦勇,傅雪海,韦重韬,等.煤层气成藏动力条件及其控藏效应[M].北京:科学出版社,2012:257-278.
[16]王安民,曹代勇,魏迎春.煤层气选区评价方法探讨——以准噶尔盆地南缘为例[J].煤炭学报,2017,42(4):950-958.WANG Anmin,CAO Daiyong,WEI Yingchun.Discussion on methods for selected areas evaluation of coalbed methane:A case study of southern Junggar basin[J].Journal of China Coal Society,2017,42(4):950-958.
[17]高弟,秦勇,易同生.论贵州煤层气地质特点与勘探开发战略[J].中国煤炭地质,2009,21(3):20-23.GAO Di,QIN Yong,YI Tongsheng.Geological condition,exploration and exploitation strategy of coal-bed methane resources in Guizhou,China[J].Coal Geology of China,2009,21(3):20-23.
[18]李建林,崔延华,王心义,等.基于分形的平煤七矿断层构造研究[J].河南理工大学学报(自然科学版),2016,35(4):493-496,519.LI Jianlin,CUI Yanhua,WANG Xinyi,et al.Study on the fault structure of No.7 coal mine of Pingdingshan based on fractal theory[J].Journal of Henan Polytechnic University(Natural Science),2016,35(4):493-496,519.
[19]陈金刚.构造曲率对煤储层渗透率的控制关系[J].西部探矿工程,2010,22(6):149-150.CHEN Jingang.Control relation of structural curvature to coal reservoir permeability[J].West-China Exploration Engineering,2010,22(6):149-150.
[20]陈金刚,张景飞.构造对高煤级煤储层渗透率的系统控制效应——以沁水盆地为例[J].天然气地球科学,2007,18(1):134-136.CHEN Jingang,ZHANG Jinfei.Systematic control effect of structures on permeability of high coal rank reservoirs[J].Natural Gas Geoscience,2007,18(1):134-136.
[21]林然,倪小明,王延斌.山西沁水盆地樊庄区块煤层气高产区预测[J].高校地质学报,2012,18(3):558-562.LIN Ran,NI Xiaoming,WANG Yanbin.Prediction of high CBM production area in the Fanzhuang block of the Qinshui basin,Shanxi Province[J].Geological Journal of China Universities,2012,18(3):558-562.
[22]沈哲,傅雪海,王可新,等.常村煤矿煤与瓦斯突出区域预测[J].煤炭科学技术,2010,38(1):38-41,84.SHEN Zhe,FU Xuehai,WANG Kexin,et al.Prediction of coal and gas outburst area in Changcun mine[J].Coal Science and Technology,2010,38(1):38-41,84.
[23]徐宏杰,桑树勋,易同生,等.黔西地区煤层埋深与地应力对其渗透性控制机制[J].地球科学-中国地质大学学报,2014,39(11):1507-1516.XU Hongjie,SANG Shuxun,YI Tongsheng,et al.Control mecganism of buried deptg and in-situ stress for coal reservoir permeability in western Guizhou[J].Earth Science-Journal of China University of Geosciences,2014,39(11):1507-1516.
[24]姜玮.多煤层区煤层气单井压裂/排采模式研究—以织纳煤田为例[D].徐州:中国矿业大学,2015:1-204.JIANG Wei.Study on the CBM single well’s fracturing/drainage model of multi-coalbeds area in Zhina coal field[D].Xuzhou:China University of Mining and Technology,2015:1-204.
[25]秦勇,申建,沈玉林.叠置含气系统共采兼容性——煤系“三气”及深部煤层气开采中的共性地质问题[J].煤炭学报,2016,41(1):14-23.QIN Yong,SHEN Jian,SHEN Yulin.Joint mining compatibility of superposed gas-bearing systems:A general geological problem for extraction of three natural gases and deep CBM in coal series[J].Journal of China Coal Society,2016,41(1):14-23.
[26]吴胜和,曾溅辉,林双运,等.层间干扰与油气差异充注[J].石油实验地质,2003,25(3):285-289.WU Shenghe,CENG Jianhui,LIN Shuangyun,et al.Interlayer interference and differential injection of hydrocarbon into a trap[J].Petroleum Geology&Experiment,2003,25(3):285-289.