新疆典型矿区低煤阶煤层气成藏差异对比研究
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摘要
基于沙尔湖矿区和阜康白杨河矿区两个发育煤层火烧的典型低煤阶含气地区的地质背景和煤储层物性研究,结合两矿区火烧区水文地质条件的差异对比分析,阐明了新疆火烧区低煤阶煤层气成藏差异及主控因素。研究结果表明:两矿区煤层厚度大、构造样式简单、孔隙发育良好,但沙尔湖矿区由于地下水动力条件较弱,且为矿化度极高的原生水,不利于低煤阶煤层气的生成,且矿区东部煤层火烧使得气体发生逸散,导致矿区内含气量偏低;阜康白杨河矿区水源补给充足,在火烧区低洼处形成滞水层,一方面,滞水层为次生生物成因气的生成提供了有利条件,另一方面形成水力封堵利于煤层气的保存。火烧区滞留水对煤层气富集成藏具有指向作用,因此本次研究成果将为新疆低煤阶煤层气勘探提供理论参考。
On the basis of the study about geological setting and reservoir property,Shaerhu(SEH)mining area and Fukang Baiyanghe(BYH)mining area are defined as two typical coalbed methane(CBM)in low rank coal.Some coal seams are burned in this two mining areas.The difference of hydrogeological condition of two mining burning areas are compared and analyzed.The differences about accumulation and main controlling factors of low rank CBM in Xinjiang are clarified.The authors find that the coal seams in the two mining areas are large in thickness,simple in structure and well-developed in porosity.However,due to the weak dynamic conditions of groundwater and the high degree of mineralization of the primary water,the SEH mining area is not conducive to the generation of low-rank CBM,and the coal seam fire in the east of the mining area causes gas to escape,lead to the low volume of gas in the mining area.On the contrary,the water supply is adequate in BYH mining area,monimolimnion are formed in the low-lying area.On the one hand,the monimolimnion provides favorable conditions for the generation of secondary biogenic gas,on the other hand,it forming hydraulic seal to preserve the gas.The monimolimnion in the burning area can point to the enrichment area of CBM.Therefore,the research will provide theoretical references for the exploration of low rank CBM in Xinjiang.
On the basis of the study about geological setting and reservoir property,Shaerhu(SEH)mining area and Fukang Baiyanghe(BYH)mining area are defined as two typical coalbed methane(CBM)in low rank coal.Some coal seams are burned in this two mining areas.The difference of hydrogeological condition of two mining burning areas are compared and analyzed.The differences about accumulation and main controlling factors of low rank CBM in Xinjiang are clarified.The authors find that the coal seams in the two mining areas are large in thickness,simple in structure and well-developed in porosity.However,due to the weak dynamic conditions of groundwater and the high degree of mineralization of the primary water,the SEH mining area is not conducive to the generation of low-rank CBM,and the coal seam fire in the east of the mining area causes gas to escape,lead to the low volume of gas in the mining area.On the contrary,the water supply is adequate in BYH mining area,monimolimnion are formed in the low-lying area.On the one hand,the monimolimnion provides favorable conditions for the generation of secondary biogenic gas,on the other hand,it forming hydraulic seal to preserve the gas.The monimolimnion in the burning area can point to the enrichment area of CBM.Therefore,the research will provide theoretical references for the exploration of low rank CBM in Xinjiang.
引文
[1]梁剑明,韦乐乐.白杨河矿区煤层气藏划分及特征研究[J].中国煤层气,2016,13(6):38-40.LIANG Jianming,WEI Lele.Research on reservoir classification and characteristics of coalbed methane reservoir in Baiyanghe mining area[J].China Coalbed Methane,2016,13(6):38-40.
[2]刘洪林,李景明,王红岩,等.浅议我国低煤阶地区的煤层气勘探思路[J].煤炭学报,2006,31(1):50-53.LIU Honglin,LI Jingming, WANG Hongyan.et al.Disscussion on finding coalbed methane in low rank coal in China[J].Journal of China Coal Society,2006,31(1):50-53.
[3]李建武.吐哈盆地煤层气开发前景分析[J].煤田地质与勘探,2002,30(5):23-24.LI Jianwu.Analysis of coalbed gas development forecast in To-Ha coal basin[J].Coal Geology&Exploration,2002,30(5):23-24.
[4]李巧梅,王瑞英,胡军,等.吐哈盆地煤层气勘探前景[J].新疆石油地质,2003,24(2):172-175.LI Qiaomei,WANG Ruiying,HU Jun,et al.Prospect of coalbed gas exploration in Turpan-Hami basin[J].Xinjiang Petroleum Geology,2003,24(2):172-175.
[5]黄军斌.吐哈盆地沙尔湖洼陷低煤阶煤层气藏特征及储量参数研究[D].北京:中国地质大学(北京),2011.
[6]王建涛.阜康矿区煤层气开发区块划分与潜力评价[D].焦作:河南理工大学,2016.
[7]孙平,王勃,孙粉锦,等.中国低煤阶煤层气成藏模式研究[J].石油学报,2009,30(5):648-653.SUN Ping,WANG Bo,SUN Fenjin,et al.Research on reservoir patterns of low-rank coal-bed methane in China[J].Acta Petrolei Sinica,2009,30(5):648-653.
[8]王世新.新疆吐哈盆地南缘构造演化地质特征及聚-成煤规律[D].长春:吉林大学,2013.
[9]叶欣.中国西北低煤阶煤层气成藏地质特征研究[D].成都:成都理工大学,2007.
[10]张大伟.阜康矿区煤储层孔隙裂隙特征研究[D].焦作:河南理工大学,2014.
[11]孙红明.阜康矿区煤储层水溶气含量模拟与水文地质控气研究[D].徐州:中国矿业大学,2015.
[12]刘洪林,王红岩,张建博.中国煤层气资源潜力及其勘探方向[J].石油勘探与开发,2001,28(1):9-11.LIU Honglin,WANG Hongyan,ZHANG Jianbo.Coal bed methane resource and its exploration direction in China[J].Petroleum Exploration and Development,2001,28(1):9-11.
[13]张向鹏.地震勘探在沙尔湖洼陷巨厚煤层中的应用研究[J].科技资讯,2014(4):117-120.ZHANG Xiangpeng.Application of seismic exploration in the great thick coal seam in the Shaerhu depression[J].Science&Technology Information,2014(4):117-120.
[14]张洲,王生维,陈文文,等.新疆阜康白杨河矿区煤层水特征及开发建议[J].煤炭技术,2016,35(2):118-120.ZHANG Zhou,WANG Shengwei,CHEN Wenwen,et al.Coalbed water characteristics and exploitation suggestion in Fukang Baiyanghe mining area in Xinjiang[J].Coal Technology,2016,35(2):118-120.
[15]刘洪林,李景明,王红岩,等.水动力对煤层气成藏的差异性研究[J].天然气工业,2006,26(3):35-37.LIU Honglin,LI Jingming,WANG Hongyan,et al.Different effects of hydrodynamic conditions on coal bed gas accumulation[J].Natural Gas Industry,2006,26(3):35-37.
[16]高鉴东.新疆阜康矿区煤储层吸附气与游离气含量模拟[D].徐州:中国矿业大学,2015.
[17]李月云.准噶尔盆地南缘煤层气成藏模式与资源评价[D].焦作:河南理工大学,2016.
[18]陶明信,王万春,李中平,等.煤层中次生生物气的形成途径与母质综合研究[J].科学通报,2014,59(11):970-978.TAO Mingxin,WANG Wanchun,LI Zhongping,et al.Comprehensive study on genetic pathways and parent materials of secondary biogenic gas in coalbeds[J].Chinese Science Bulletin,2014,59(11):970-978.
[19]王博洋,秦勇,申建,等.我国低煤阶煤煤层气地质研究综述[J].煤炭科学技术,2017,45(1):170-179.WANG Boyang,QIN Yong,SHEN Jian,et al.Summarization of geological study on low rank coalbed methane in China[J].Coal Science and Technology,2017,45(1):170-179.
[20]李勇,曹代勇,魏迎春,等.准噶尔盆地南缘中低煤阶煤层气富集成藏规律[J].石油学报,2016,37(12):1472-1482.LI Yong,CAO Daiyong,WEI Yingchun,et al.Middle to low rank coalbed methane accumulation and reservoiring in the southern margin of Junggar basin[J].Acta Petrolei Sinica,2016,37(12):1472-1482.
[21]李本亮,王明明,冉启贵,等.地层水含盐度对生物气运聚成藏的作用[J].天然气工业,2003,23(5):16-20.LI Benliang,WANG Mingming,RAN Qigui,et al.Effect of the salinity of formation water on biogas migration,accumulation and reservoir formation[J]. Natural Gas Industry,2003,23(5):16-20.
[2]刘洪林,李景明,王红岩,等.浅议我国低煤阶地区的煤层气勘探思路[J].煤炭学报,2006,31(1):50-53.LIU Honglin,LI Jingming, WANG Hongyan.et al.Disscussion on finding coalbed methane in low rank coal in China[J].Journal of China Coal Society,2006,31(1):50-53.
[3]李建武.吐哈盆地煤层气开发前景分析[J].煤田地质与勘探,2002,30(5):23-24.LI Jianwu.Analysis of coalbed gas development forecast in To-Ha coal basin[J].Coal Geology&Exploration,2002,30(5):23-24.
[4]李巧梅,王瑞英,胡军,等.吐哈盆地煤层气勘探前景[J].新疆石油地质,2003,24(2):172-175.LI Qiaomei,WANG Ruiying,HU Jun,et al.Prospect of coalbed gas exploration in Turpan-Hami basin[J].Xinjiang Petroleum Geology,2003,24(2):172-175.
[5]黄军斌.吐哈盆地沙尔湖洼陷低煤阶煤层气藏特征及储量参数研究[D].北京:中国地质大学(北京),2011.
[6]王建涛.阜康矿区煤层气开发区块划分与潜力评价[D].焦作:河南理工大学,2016.
[7]孙平,王勃,孙粉锦,等.中国低煤阶煤层气成藏模式研究[J].石油学报,2009,30(5):648-653.SUN Ping,WANG Bo,SUN Fenjin,et al.Research on reservoir patterns of low-rank coal-bed methane in China[J].Acta Petrolei Sinica,2009,30(5):648-653.
[8]王世新.新疆吐哈盆地南缘构造演化地质特征及聚-成煤规律[D].长春:吉林大学,2013.
[9]叶欣.中国西北低煤阶煤层气成藏地质特征研究[D].成都:成都理工大学,2007.
[10]张大伟.阜康矿区煤储层孔隙裂隙特征研究[D].焦作:河南理工大学,2014.
[11]孙红明.阜康矿区煤储层水溶气含量模拟与水文地质控气研究[D].徐州:中国矿业大学,2015.
[12]刘洪林,王红岩,张建博.中国煤层气资源潜力及其勘探方向[J].石油勘探与开发,2001,28(1):9-11.LIU Honglin,WANG Hongyan,ZHANG Jianbo.Coal bed methane resource and its exploration direction in China[J].Petroleum Exploration and Development,2001,28(1):9-11.
[13]张向鹏.地震勘探在沙尔湖洼陷巨厚煤层中的应用研究[J].科技资讯,2014(4):117-120.ZHANG Xiangpeng.Application of seismic exploration in the great thick coal seam in the Shaerhu depression[J].Science&Technology Information,2014(4):117-120.
[14]张洲,王生维,陈文文,等.新疆阜康白杨河矿区煤层水特征及开发建议[J].煤炭技术,2016,35(2):118-120.ZHANG Zhou,WANG Shengwei,CHEN Wenwen,et al.Coalbed water characteristics and exploitation suggestion in Fukang Baiyanghe mining area in Xinjiang[J].Coal Technology,2016,35(2):118-120.
[15]刘洪林,李景明,王红岩,等.水动力对煤层气成藏的差异性研究[J].天然气工业,2006,26(3):35-37.LIU Honglin,LI Jingming,WANG Hongyan,et al.Different effects of hydrodynamic conditions on coal bed gas accumulation[J].Natural Gas Industry,2006,26(3):35-37.
[16]高鉴东.新疆阜康矿区煤储层吸附气与游离气含量模拟[D].徐州:中国矿业大学,2015.
[17]李月云.准噶尔盆地南缘煤层气成藏模式与资源评价[D].焦作:河南理工大学,2016.
[18]陶明信,王万春,李中平,等.煤层中次生生物气的形成途径与母质综合研究[J].科学通报,2014,59(11):970-978.TAO Mingxin,WANG Wanchun,LI Zhongping,et al.Comprehensive study on genetic pathways and parent materials of secondary biogenic gas in coalbeds[J].Chinese Science Bulletin,2014,59(11):970-978.
[19]王博洋,秦勇,申建,等.我国低煤阶煤煤层气地质研究综述[J].煤炭科学技术,2017,45(1):170-179.WANG Boyang,QIN Yong,SHEN Jian,et al.Summarization of geological study on low rank coalbed methane in China[J].Coal Science and Technology,2017,45(1):170-179.
[20]李勇,曹代勇,魏迎春,等.准噶尔盆地南缘中低煤阶煤层气富集成藏规律[J].石油学报,2016,37(12):1472-1482.LI Yong,CAO Daiyong,WEI Yingchun,et al.Middle to low rank coalbed methane accumulation and reservoiring in the southern margin of Junggar basin[J].Acta Petrolei Sinica,2016,37(12):1472-1482.
[21]李本亮,王明明,冉启贵,等.地层水含盐度对生物气运聚成藏的作用[J].天然气工业,2003,23(5):16-20.LI Benliang,WANG Mingming,RAN Qigui,et al.Effect of the salinity of formation water on biogas migration,accumulation and reservoir formation[J]. Natural Gas Industry,2003,23(5):16-20.