基于测井信息的韩城地区煤体结构的分布规律
|
摘要
韩城地区煤层受多期构造破坏,煤体结构复杂,煤层气井出粉较为严重,目前对区内煤体结构分布规律研究尚且不足,制约了区内煤层气产能提高。通过对韩城地区测井资料与钻井取芯样品进行对比分析,总结出了不同煤体结构的深侧向电阻率测井、双井径测井及自然伽马测井曲线组合特征,并利用测井曲线组合特征识别煤体结构及分层定厚,进一步通过对研究区24口煤层气井测井资料的分析,揭示3号、5号和11号煤层煤体结构平面分布规律及其与区域构造的关系。研究表明:①I类煤(块煤)扩径轻微,电阻率偏高;II类煤(块粉煤)扩径严重且差异扩径现象明显,电阻率偏低;III类煤(粉煤)扩径严重且部分出现轻微差异扩径现象,电阻率偏低。②边缘浅部隆起构造带、龙亭构造带、东泽村构造带和龙骨岭构造带控制了区内3号、5号和11号煤层煤体结构分布,II类煤和III类煤基本沿着构造带走向展布,同一构造带对不同煤层的破坏程度不同。
The coal structure of Hancheng Mine is very complicated underwent multi-phase structure destruction and the coal powder production of coalbed methane wells is relatively high.The research of coal structure distribution in the study area is not enough at present,which restricts the gas production increasing.Based on the comparative analysis of well logging data and core samples in Hancheng Mine,the combined characteristics of resistivity logs,caliper logs and natural gamma logs of different coal structure were summarized and the coal structure and thickness of stratifications in different coal structure were identified.According to the analysis of 24 wells' logging data in the study area,the distributions of coal structure of Nos.3,5 and 11 coal seam were discovered and the relationships between coal structure distribution and structure belt were discussed.The results show:① The diameter extension of Class I(lump coal) is minor and its resistivity is high;the diameter extension of Class II(lump-powder coal) is serious and anisotropic and its resistivity is relative low;the diameter extension of Class III(powder coal) is serious and slightly anisotropic and its resistivity is relative low;② The distributions of coal structure at Nos.3,5 and 11 coal seam are controlled by Margin structure belt,Longting structure belt,Dongzecun structure belt and Longguling structure belt.Class II and Class III coal structures spread along the structure belt and the influences of the same structure belt to different coal seams are different.
The coal structure of Hancheng Mine is very complicated underwent multi-phase structure destruction and the coal powder production of coalbed methane wells is relatively high.The research of coal structure distribution in the study area is not enough at present,which restricts the gas production increasing.Based on the comparative analysis of well logging data and core samples in Hancheng Mine,the combined characteristics of resistivity logs,caliper logs and natural gamma logs of different coal structure were summarized and the coal structure and thickness of stratifications in different coal structure were identified.According to the analysis of 24 wells' logging data in the study area,the distributions of coal structure of Nos.3,5 and 11 coal seam were discovered and the relationships between coal structure distribution and structure belt were discussed.The results show:① The diameter extension of Class I(lump coal) is minor and its resistivity is high;the diameter extension of Class II(lump-powder coal) is serious and anisotropic and its resistivity is relative low;the diameter extension of Class III(powder coal) is serious and slightly anisotropic and its resistivity is relative low;② The distributions of coal structure at Nos.3,5 and 11 coal seam are controlled by Margin structure belt,Longting structure belt,Dongzecun structure belt and Longguling structure belt.Class II and Class III coal structures spread along the structure belt and the influences of the same structure belt to different coal seams are different.
引文
[1]李松,汤达祯,许浩,等.不同煤体结构煤储层物性差异分析[A].2011年煤层气学术研讨会——中国煤层气技术进展[C].北京:地质出版社,2011:123-129.
[2]龙王寅,朱文伟,徐静,等.利用测井曲线判识煤体结构探讨[J].中国煤田地质,1999,11(3):64-69.Long Wangyin,Zhu Wenwei,Xu Jing,et al.The judgment on coal structure using well logs[J].Coal Geology of China,1999,11(3):64-69.
[3]王定武.利用模拟测井曲线判识构造煤研究[J].中国煤田地质,1997,9(4):70-73.Wang Dingwu.Identifying tectonic coal using simulated logging curve[J].Coal Geology of China,1997,9(4):70-73.
[4]严家平,王定武.利用测井曲线判别煤的破坏类型及意义[J].东北煤炭技术,1999(3):50-53.Yan Jiaping,Wang Dingwu.Identifying the destruction type and significance of coal using well logs[J].Coal Technology of Northeast China,1999(3):50-53.
[5]张玉贵,樊孝敏,王世国.测井曲线在研究构造煤中的应用[J].焦作矿业学报,1995,14(1):76-78.Zhang Yugui,Fan Xiaomin,Wang Shiguo.Application of well logs in the study of tectonic coal[J].Journal of Jiaozuo Mining Institute,1995,14(1):76-78.
[6]严家平,王定武.利用煤田钻孔测井信息判识祁东煤矿构造煤的理论与实践[J].矿业安全与环保,2003,30(6):37-46.Yan Jiaping,Wang Dingwu.The theory and practice of identifying tectonic coal using well logging data in Qidong Mine[J].Journal of Mining Safety and Environmental Protection,2003,30(6):37-46.
[7]傅雪海,陆国桢,秦杰,等.用测井响应拟合煤层气含量和划分煤体结构[J].测井技术,1999,23(2):112-115.Fu Xuehai,Lu Guozhen,Qin Jie,et al.Fitting coalbed methane content and identifying coal structure with log response[J].Journal of Well Logging Technology,1999,23(2):112-115.
[8]汤友谊,孙四清,田高岭.测井曲线计算机识别构造软煤的研究[J].煤炭学报,2005,30(3):293-296.Tang Youyi,Sun Siqing,Tian Gaoling.Study of computer identifying on tectonic soft coal with well log[J].Journal of China Coal Society,2003,30(6):37-46.
[9]姚军朋,司马立强,张玉贵.构造煤地球物理测井定量判识研究[J].煤炭学报,2011,36(1):94-98.Yao Junpeng,Sima Liqiang,Zhang Yugui.Quantitative identification of deformed coals by geophysical logging[J].Journal of China Coal Society,2011,36(1):94-98.
[10]傅雪海,姜波,秦勇,等.用测井曲线划分煤体结构和预测煤储层的渗透率[J].测井技术,2003,27(2):140-143.Fu Xuehai,Jiang Bo,Qi Yong,et al.Identifying coal structure and forecast of coal reservoir permeability using well logs[J].Journal of Well Logging Technology,2003,27(2):140-143.
[11]陈健杰,江林华,张玉贵,等.不同煤体结构类型煤的导电性质研究[J].煤炭科学技术,2011,39(7):90-92.Chen Jianjie,Jiang Linhua,Zhang Yugui,et al.Study on coal conductive properties of different coal structure[J].Coal Science and Technology,2011,39(7):90-92.
[12]乔伟,倪小明,张小东.煤体结构组合与井径变化关系研究[J].河南理工大学学报,2010,29(2):162-166.Qiao Wei,Ni Xiaoming,Zhang Xiaodong.The relation between the coal structure combination and the changes in well diameter[J].Journal of Henan Polytechnic University,2010,29(2):162-166.
[13]倪小明,石书灿.不同煤体结构组合下井径扩径的钻进主控因素[J].西南石油大学学报,2011,33(6):135-139.Ni Xiaoming,Shi Shucan.Main controlling factors of caliper expanding during drilling in different coal structure combination[J].Journal of Southwest Petroleum University,2011,33(6):135139.
[14]王生全.论韩城矿区煤层气的构造控制[J].煤田地质与勘探,2002,30(1):21-25.Wang Shengquan.Geology structure control of CBM in Hancheng mining area[J].Coal Geology&Exploration,2002,30(1):2125.
[15]王纪平.韩城北区构造发育规律及对煤矿安全因素影响的研究[D].西安:西安科技大学,2011.
[16]王双明,王晓刚,范立民,等.韩城矿区煤层气地质条件及赋存规律[M].北京:地质出版社,2008.
[17]黄作华.测井资料数字处理方法[M].北京:煤炭工业出版社,1982.
[18]曹嘉猷,刘士安,高敏.测井资料综合解释[M].北京:石油工业出版社,2002.
[19]夏玉成.陕西渭北煤矿区地质与灾害防治[M].西安:西安地图出版社,1996.
[20]陈练武.桑树坪井田褶皱构造发育规律探讨[J].西北地质,1998,19(1):50-53.Chen Lianwu.The study of development regularity of fold structures in Sanshuping Mine[J].Southwestern Geology,1998,19(1):5053.
[2]龙王寅,朱文伟,徐静,等.利用测井曲线判识煤体结构探讨[J].中国煤田地质,1999,11(3):64-69.Long Wangyin,Zhu Wenwei,Xu Jing,et al.The judgment on coal structure using well logs[J].Coal Geology of China,1999,11(3):64-69.
[3]王定武.利用模拟测井曲线判识构造煤研究[J].中国煤田地质,1997,9(4):70-73.Wang Dingwu.Identifying tectonic coal using simulated logging curve[J].Coal Geology of China,1997,9(4):70-73.
[4]严家平,王定武.利用测井曲线判别煤的破坏类型及意义[J].东北煤炭技术,1999(3):50-53.Yan Jiaping,Wang Dingwu.Identifying the destruction type and significance of coal using well logs[J].Coal Technology of Northeast China,1999(3):50-53.
[5]张玉贵,樊孝敏,王世国.测井曲线在研究构造煤中的应用[J].焦作矿业学报,1995,14(1):76-78.Zhang Yugui,Fan Xiaomin,Wang Shiguo.Application of well logs in the study of tectonic coal[J].Journal of Jiaozuo Mining Institute,1995,14(1):76-78.
[6]严家平,王定武.利用煤田钻孔测井信息判识祁东煤矿构造煤的理论与实践[J].矿业安全与环保,2003,30(6):37-46.Yan Jiaping,Wang Dingwu.The theory and practice of identifying tectonic coal using well logging data in Qidong Mine[J].Journal of Mining Safety and Environmental Protection,2003,30(6):37-46.
[7]傅雪海,陆国桢,秦杰,等.用测井响应拟合煤层气含量和划分煤体结构[J].测井技术,1999,23(2):112-115.Fu Xuehai,Lu Guozhen,Qin Jie,et al.Fitting coalbed methane content and identifying coal structure with log response[J].Journal of Well Logging Technology,1999,23(2):112-115.
[8]汤友谊,孙四清,田高岭.测井曲线计算机识别构造软煤的研究[J].煤炭学报,2005,30(3):293-296.Tang Youyi,Sun Siqing,Tian Gaoling.Study of computer identifying on tectonic soft coal with well log[J].Journal of China Coal Society,2003,30(6):37-46.
[9]姚军朋,司马立强,张玉贵.构造煤地球物理测井定量判识研究[J].煤炭学报,2011,36(1):94-98.Yao Junpeng,Sima Liqiang,Zhang Yugui.Quantitative identification of deformed coals by geophysical logging[J].Journal of China Coal Society,2011,36(1):94-98.
[10]傅雪海,姜波,秦勇,等.用测井曲线划分煤体结构和预测煤储层的渗透率[J].测井技术,2003,27(2):140-143.Fu Xuehai,Jiang Bo,Qi Yong,et al.Identifying coal structure and forecast of coal reservoir permeability using well logs[J].Journal of Well Logging Technology,2003,27(2):140-143.
[11]陈健杰,江林华,张玉贵,等.不同煤体结构类型煤的导电性质研究[J].煤炭科学技术,2011,39(7):90-92.Chen Jianjie,Jiang Linhua,Zhang Yugui,et al.Study on coal conductive properties of different coal structure[J].Coal Science and Technology,2011,39(7):90-92.
[12]乔伟,倪小明,张小东.煤体结构组合与井径变化关系研究[J].河南理工大学学报,2010,29(2):162-166.Qiao Wei,Ni Xiaoming,Zhang Xiaodong.The relation between the coal structure combination and the changes in well diameter[J].Journal of Henan Polytechnic University,2010,29(2):162-166.
[13]倪小明,石书灿.不同煤体结构组合下井径扩径的钻进主控因素[J].西南石油大学学报,2011,33(6):135-139.Ni Xiaoming,Shi Shucan.Main controlling factors of caliper expanding during drilling in different coal structure combination[J].Journal of Southwest Petroleum University,2011,33(6):135139.
[14]王生全.论韩城矿区煤层气的构造控制[J].煤田地质与勘探,2002,30(1):21-25.Wang Shengquan.Geology structure control of CBM in Hancheng mining area[J].Coal Geology&Exploration,2002,30(1):2125.
[15]王纪平.韩城北区构造发育规律及对煤矿安全因素影响的研究[D].西安:西安科技大学,2011.
[16]王双明,王晓刚,范立民,等.韩城矿区煤层气地质条件及赋存规律[M].北京:地质出版社,2008.
[17]黄作华.测井资料数字处理方法[M].北京:煤炭工业出版社,1982.
[18]曹嘉猷,刘士安,高敏.测井资料综合解释[M].北京:石油工业出版社,2002.
[19]夏玉成.陕西渭北煤矿区地质与灾害防治[M].西安:西安地图出版社,1996.
[20]陈练武.桑树坪井田褶皱构造发育规律探讨[J].西北地质,1998,19(1):50-53.Chen Lianwu.The study of development regularity of fold structures in Sanshuping Mine[J].Southwestern Geology,1998,19(1):5053.