深部煤层气储层测井解释技术及应用
|
摘要
由于深部煤层取心资料和室内测试数据少,难以准确识别煤层煤体结构、显微组分、含气量与渗透率等关键参数,不利于煤层气有利开发区预测。为此,利用数理统计方法,将测井资料与实验室测试数据、现场注入压降试井数据对比分析,建立了研究区煤层参数测井解释模型,并应用该模型进一步对煤层进行综合评价。结果表明,煤岩工业组分、煤层含气量和渗透率测井模型计算结果误差分别为0~13.8%,1.9%~16.5%和4.2%~28.6%,证实模型可靠,具有较好的应用前景。根据测井解释模型分别计算研究区煤层厚度、渗透率、含气量及煤体结构等地质参数,根据这些参数将煤层分成Ⅰ类、Ⅱ类和Ⅲ类,其中Ⅰ类煤层理论产气量大于1 000 m~3/d,为高产气区;Ⅱ类煤层理论产气量大于500~1 000 m~3/d,为中等产气区;Ⅲ类煤层理论产气量小于500 m~3/d,为低产气区。
Since the coring data and indoor test data of deep coal seam are few,it is difficult to identify the key parameters of coal seam structure,maceral,gas content and permeability,which is not conducive to the prediction of favorable coalbed methane development zones. To solve this problem,the logging data were compared with the laboratory test data and the injection pressure drop testing data using the mathematical statistics method to compare. The log interpretation model of coal reservoir parameters was established and applied to further coal seam evaluation in the study area. The results show that the errors resulted from the logging model computation of components of coal industry,coalbed methane content and permeability logging are 0~13.8%,1.9%~16.5% and 4.2%~28.6%,respectively. The model is effective and reliable and has a good application prospect. The geological parameters of coal seam thickness,permeability,gas content and coal seam structure in the study area were calculated. On this basis,the coal seam was divided into class Ⅰ,Ⅱ and Ⅲ. The theoretical gas production is higher than 1 000 m~3/d in the class I which is a high yield gas area;the theoretical gas production is between 500 and 1000 m~3/d in the class Ⅱ which is a medium gas producing area;and the theoretical gas production is less than 500 m~3/d in the class Ⅲ which is a low production area.
Since the coring data and indoor test data of deep coal seam are few,it is difficult to identify the key parameters of coal seam structure,maceral,gas content and permeability,which is not conducive to the prediction of favorable coalbed methane development zones. To solve this problem,the logging data were compared with the laboratory test data and the injection pressure drop testing data using the mathematical statistics method to compare. The log interpretation model of coal reservoir parameters was established and applied to further coal seam evaluation in the study area. The results show that the errors resulted from the logging model computation of components of coal industry,coalbed methane content and permeability logging are 0~13.8%,1.9%~16.5% and 4.2%~28.6%,respectively. The model is effective and reliable and has a good application prospect. The geological parameters of coal seam thickness,permeability,gas content and coal seam structure in the study area were calculated. On this basis,the coal seam was divided into class Ⅰ,Ⅱ and Ⅲ. The theoretical gas production is higher than 1 000 m~3/d in the class I which is a high yield gas area;the theoretical gas production is between 500 and 1000 m~3/d in the class Ⅱ which is a medium gas producing area;and the theoretical gas production is less than 500 m~3/d in the class Ⅲ which is a low production area.
引文
[1]徐祖新,姜文亚,刘海涛.常规与非常规油气关系研究现状与发展趋势[J].油气地质与采收率,2016,23(3):14-19.XU Zuxin,JIANG Wenya,LIU Haitao.Research status and development tendency of the relationship between conventional and unconventional oil and gas[J].Petroleum Geology and Recovery Efficiency,2016,23(3):14-19.
[2]陈刚,秦勇,李五忠,等.鄂尔多斯盆地东部深层煤层气成藏地质条件分析[J].高校地质学报,2012,18(3):465-473.CHEN Gang,QIN Yong,LI Wuzhong,et al.Analysis of geological conditions of deep coalbed methane reservoiring in the eastern Ordos Basin[J].Geological Journal of China Universities,2012,18(3):465-473.
[3]郭伟.延川南煤层气田基本特征与成藏关键因素[J].石油实验地质,2015,37(3):341-346.GUO Wei.Basic characteristics and key factors of gas accumulation in Yanchuannan coalbed gas field[J].Petroleum Geology&Experiment,2015,37(3):341-346.
[4]杨显成,蒋有录,杨昕睿,等.煤层气含量的主控因素——以卡拉哈里盆地XX区块为例[J].油气地质与采收率,2018,25(1):1-5.YANG Xiancheng,JIANG Youlu,YANG Xinrui,et al.Study on main controlling factors of the coalbed methane content:A case study of Block XX in Kgalahari Basin[J].Petroleum Geology and Recovery Efficiency,2018,25(1):1-5.
[5]刘之的,赵靖舟,时保宏,等.煤层气储层“三品质”测井定量评价方法研究——以鄂尔多斯盆地东缘韩城矿区为例[J].天然气地球科学,2015,26(5):966-978.LIU Zhidi,ZHAO Jingzhou,SHI Baohong,et al.Study on the method of quantitative evaluation for“three qualities”of CBM reservoir using logging data:A case study from the Hancheng mine at the eastern edge of the Ordos Basin[J].Natural Gas Geoscience,2015,26(5):966-978.
[6]刘之的,杨秀春,张继坤,等.鄂东气田煤层含气量测井预测[J].地质科技情报,2014,33(1):95-99.LIU Zhidi,YANG Xiuchun,ZHANG Jikun,et al.Logging predicting for coalbed gas content in Eastern Block of Ordos Basin[J].Geological Science and Technology Information,2014,33(1):95-99.
[7]邵先杰,孙玉波,孙景民,等.煤岩参数测井解释方法——以韩城矿区为例[J].石油勘探与开发,2013,40(5):559-565.SHAO Xianjie,SUN Yubo,SUN Jingmin,et al.Logging interpretation of coal petrologic parameters:A case study of Hancheng mining area[J].Petroleum Exploration and Development,2013,40(5):559-565.
[8]李朋朋,张小东,杨延辉,等.不同变形程度煤的吸附时间及其影响因素[J].油气地质与采收率,2017,24(4):43-48.LI Pengpeng,ZHANG Xiaodong,YANG Yanhui,et al.Adsorption time of coals with different degrees of deformation and their influencing factors[J].Petroleum Geology and Recovery Efficiency,2017,24(4):43-48.
[9]伊伟,熊先钺,卓莹,等.韩城矿区煤储层特征及煤层气资源潜力[J].中国石油勘探,2017,22(6):78-86.YI Wei,XIONG Xianyue,ZHUO Ying,et al.Coal reservoirs and CBM potentials in Hancheng mining area[J].China Petroleum Exploration,2017,22(6):78-86.
[10]陶传奇,王延斌,倪小明,等.基于测井参数的煤体结构预测模型及空间展布规律[J].煤炭科学技术,2017,45(2):173-177,196.TAO Chuanqi,WANG Yanbin,NI Xiaoming,et al.Prediction model of coal-body structure and spatial distribution law based on logging parameters[J].Coal Science and Technology,2017,45(2):173-177,196.
[11]张超,黄华州,徐德林,等.基于测井曲线的煤体结构判识[J].煤炭科学技术,2017,45(9):47-51.ZHANG Chao,HUANG Huazhou,XU Delin,et al.Coal structure identified based on logging curve[J].Coal Science and Technology,2017,45(9):47-51.
[12]金泽亮,薛海飞,高海滨,等.煤层气储层测井评价技术及应用[J].煤田地质与勘探,2013,41(2):42-45.JIN Zeliang,XUE Haifei,GAO Haibin,et al.Technology for evaluation of CBM reservoir logging and its application[J].Coal Geology&Exploration,2013,41(2):42-45.
[13]赵毅,毛志强,孙伟,等.煤层气储层非常规测井资料评价方法研究[J].测井技术,2011,35(5):441-446.ZHAO Yi,MAO Zhiqiang,SUN Wei,et al.Evaluation method for unconventional log data of CBM reservoir[J].Well Logging Technology,2011,35(5):441-446.
[14]黄兆辉,邹长春,杨玉卿,等.沁水盆地南部TS地区煤层气储层测井评价方法[J].现代地质,2012,26(6):1 275-1 281.HUANG Zhaohui,ZOU Changchun,YANG Yuqing,et al.Coalbed methane reservoir evaluation from wireline logs in TS District,southern Qinshui Basin[J].Geoscience,2012,26(6):1 275-1 281.
[15]苗清,秦华明,刘江,等.裂缝识别测井技术开发与应用[J].大庆石油地质与开发,2016,35(6):138-143.MIAO Qing,QIN Huaming,LIU Jiang,et al.Development of fracture identifying well-logging technique and its application[J].Petroleum Geology&Oilfield Development in Daqing,2016,35(6):138-143.
[16]张杨,王振兰,范文同,等.基于裂缝精细评价和力学活动性分析的储层改造方案优选及其在博孜区块的应用[J].中国石油勘探,2017,22(6):47-58.ZHANG Yang,WANG Zhenlan,FAN Wentong,et al.Optimization of reservoir stimulation scheme based on fine fracture evaluation and mechanical activity analysis and its application in Bozi block[J].China Petroleum Exploration,2017,22(6):47-58.
[17]梁红艺,谢小国,罗兵,等.煤层含气量评价方法研究与应用[J].特种油气藏,2016,23(3):44-47.LIANG Hongyi,XIE Xiaoguo,LUO Bing,et al.Coalbed methane content evaluation and application[J].Special Oil&Gas Reservoirs,2016,23(3):44-47.
[18]张玲,魏绍蕾,黄学斌,等.基于综合权重法的页岩气储量评价方法探讨[J].石油实验地质,2017,39(5):694-699.ZHANG Ling,WEI Shaolei,HUANG Xuebin,et al.Shale gas reserve quality evaluation based on a comprehensive weighting method[J].Petroleum Geology&Experiment,2017,39(5):694-699.
[19]PENG Cheng,ZOU Changchun,ZHOU Tianning,et al.Factors affecting coalbed methane(CBM)well productivity in the Shizhuangnan block of southern Qinshui basin,North China:Investigation by geophysical log,experiment and production data[J].Fuel,2017,191:427-441.
[20]GAN Thomas,BALMAIN Brendan,SIGBATULLIN Artem.Formation evaluation log-off results comparing new generation Mining style logging tools to conventional oil and gas logging tools for application in coalbed methane(CBM)field development[J].Journal of Natural Gas Science&Engineering,2016,34:1 237-1 250.
[21]LIU Huihu,SANG Shuxun,WANG Geoff G X,et al.Block scale investigation on gas content of coalbed methane reservoirs in southern Qinshui basin with statistical model and visual map[J].Journal of Petroleum Science&Engineering,2014,114(2):1-14.
[22]刘成林,朱杰,车长波,等.新一轮全国煤层气资源评价方法与结果[J].天然气工业,2009,29(11):130-132.LIU Chenglin,ZHU Jie,CHE Changbo,et al.Methodologies and results of the latest assessment of coalbed methane resources in China[J].Nature Gas lndustry,2009,29(11):130-132.
[23]秦勇,申建,王宝文,等.深部煤层气成藏效应及其耦合关系[J].石油学报,2012,33(1):48-54.QIN Yong,SHEN Jian,WANG Baowen,et al.Accumulation effects and coupling relationship of deep coalbed methane[J].Acta Petrolei Sinica,2012,33(1):48-54.
[24]陈刚,胡宗全,苏坤,等.鄂东南延川南深煤层煤体结构与产气量关系分析[J].煤炭科学技术,2016,44(12):107-112.CHEN Gang,HU Zongquan,SU Kun,et al.Analysis on relationship between coal structure and gas production quantity in deep coal seam of Yanchuannan Area at Southeast Ordos[J].Coal Science and Technology,2016,44(12):107-112.
[25]熊先钺,边利恒,王伟,等.韩城区块煤储层间接压裂地质主控因素研究[J].煤炭科学技术,2017,45(6):189-195.XIONG Xianyue,BIAN Liheng,WANG Wei,et al.Research on main geological controlling factors of coal reservoir indirect fracturing in Hancheng Block[J].Coal Science and Technology,2017,45(6):189-195.
[2]陈刚,秦勇,李五忠,等.鄂尔多斯盆地东部深层煤层气成藏地质条件分析[J].高校地质学报,2012,18(3):465-473.CHEN Gang,QIN Yong,LI Wuzhong,et al.Analysis of geological conditions of deep coalbed methane reservoiring in the eastern Ordos Basin[J].Geological Journal of China Universities,2012,18(3):465-473.
[3]郭伟.延川南煤层气田基本特征与成藏关键因素[J].石油实验地质,2015,37(3):341-346.GUO Wei.Basic characteristics and key factors of gas accumulation in Yanchuannan coalbed gas field[J].Petroleum Geology&Experiment,2015,37(3):341-346.
[4]杨显成,蒋有录,杨昕睿,等.煤层气含量的主控因素——以卡拉哈里盆地XX区块为例[J].油气地质与采收率,2018,25(1):1-5.YANG Xiancheng,JIANG Youlu,YANG Xinrui,et al.Study on main controlling factors of the coalbed methane content:A case study of Block XX in Kgalahari Basin[J].Petroleum Geology and Recovery Efficiency,2018,25(1):1-5.
[5]刘之的,赵靖舟,时保宏,等.煤层气储层“三品质”测井定量评价方法研究——以鄂尔多斯盆地东缘韩城矿区为例[J].天然气地球科学,2015,26(5):966-978.LIU Zhidi,ZHAO Jingzhou,SHI Baohong,et al.Study on the method of quantitative evaluation for“three qualities”of CBM reservoir using logging data:A case study from the Hancheng mine at the eastern edge of the Ordos Basin[J].Natural Gas Geoscience,2015,26(5):966-978.
[6]刘之的,杨秀春,张继坤,等.鄂东气田煤层含气量测井预测[J].地质科技情报,2014,33(1):95-99.LIU Zhidi,YANG Xiuchun,ZHANG Jikun,et al.Logging predicting for coalbed gas content in Eastern Block of Ordos Basin[J].Geological Science and Technology Information,2014,33(1):95-99.
[7]邵先杰,孙玉波,孙景民,等.煤岩参数测井解释方法——以韩城矿区为例[J].石油勘探与开发,2013,40(5):559-565.SHAO Xianjie,SUN Yubo,SUN Jingmin,et al.Logging interpretation of coal petrologic parameters:A case study of Hancheng mining area[J].Petroleum Exploration and Development,2013,40(5):559-565.
[8]李朋朋,张小东,杨延辉,等.不同变形程度煤的吸附时间及其影响因素[J].油气地质与采收率,2017,24(4):43-48.LI Pengpeng,ZHANG Xiaodong,YANG Yanhui,et al.Adsorption time of coals with different degrees of deformation and their influencing factors[J].Petroleum Geology and Recovery Efficiency,2017,24(4):43-48.
[9]伊伟,熊先钺,卓莹,等.韩城矿区煤储层特征及煤层气资源潜力[J].中国石油勘探,2017,22(6):78-86.YI Wei,XIONG Xianyue,ZHUO Ying,et al.Coal reservoirs and CBM potentials in Hancheng mining area[J].China Petroleum Exploration,2017,22(6):78-86.
[10]陶传奇,王延斌,倪小明,等.基于测井参数的煤体结构预测模型及空间展布规律[J].煤炭科学技术,2017,45(2):173-177,196.TAO Chuanqi,WANG Yanbin,NI Xiaoming,et al.Prediction model of coal-body structure and spatial distribution law based on logging parameters[J].Coal Science and Technology,2017,45(2):173-177,196.
[11]张超,黄华州,徐德林,等.基于测井曲线的煤体结构判识[J].煤炭科学技术,2017,45(9):47-51.ZHANG Chao,HUANG Huazhou,XU Delin,et al.Coal structure identified based on logging curve[J].Coal Science and Technology,2017,45(9):47-51.
[12]金泽亮,薛海飞,高海滨,等.煤层气储层测井评价技术及应用[J].煤田地质与勘探,2013,41(2):42-45.JIN Zeliang,XUE Haifei,GAO Haibin,et al.Technology for evaluation of CBM reservoir logging and its application[J].Coal Geology&Exploration,2013,41(2):42-45.
[13]赵毅,毛志强,孙伟,等.煤层气储层非常规测井资料评价方法研究[J].测井技术,2011,35(5):441-446.ZHAO Yi,MAO Zhiqiang,SUN Wei,et al.Evaluation method for unconventional log data of CBM reservoir[J].Well Logging Technology,2011,35(5):441-446.
[14]黄兆辉,邹长春,杨玉卿,等.沁水盆地南部TS地区煤层气储层测井评价方法[J].现代地质,2012,26(6):1 275-1 281.HUANG Zhaohui,ZOU Changchun,YANG Yuqing,et al.Coalbed methane reservoir evaluation from wireline logs in TS District,southern Qinshui Basin[J].Geoscience,2012,26(6):1 275-1 281.
[15]苗清,秦华明,刘江,等.裂缝识别测井技术开发与应用[J].大庆石油地质与开发,2016,35(6):138-143.MIAO Qing,QIN Huaming,LIU Jiang,et al.Development of fracture identifying well-logging technique and its application[J].Petroleum Geology&Oilfield Development in Daqing,2016,35(6):138-143.
[16]张杨,王振兰,范文同,等.基于裂缝精细评价和力学活动性分析的储层改造方案优选及其在博孜区块的应用[J].中国石油勘探,2017,22(6):47-58.ZHANG Yang,WANG Zhenlan,FAN Wentong,et al.Optimization of reservoir stimulation scheme based on fine fracture evaluation and mechanical activity analysis and its application in Bozi block[J].China Petroleum Exploration,2017,22(6):47-58.
[17]梁红艺,谢小国,罗兵,等.煤层含气量评价方法研究与应用[J].特种油气藏,2016,23(3):44-47.LIANG Hongyi,XIE Xiaoguo,LUO Bing,et al.Coalbed methane content evaluation and application[J].Special Oil&Gas Reservoirs,2016,23(3):44-47.
[18]张玲,魏绍蕾,黄学斌,等.基于综合权重法的页岩气储量评价方法探讨[J].石油实验地质,2017,39(5):694-699.ZHANG Ling,WEI Shaolei,HUANG Xuebin,et al.Shale gas reserve quality evaluation based on a comprehensive weighting method[J].Petroleum Geology&Experiment,2017,39(5):694-699.
[19]PENG Cheng,ZOU Changchun,ZHOU Tianning,et al.Factors affecting coalbed methane(CBM)well productivity in the Shizhuangnan block of southern Qinshui basin,North China:Investigation by geophysical log,experiment and production data[J].Fuel,2017,191:427-441.
[20]GAN Thomas,BALMAIN Brendan,SIGBATULLIN Artem.Formation evaluation log-off results comparing new generation Mining style logging tools to conventional oil and gas logging tools for application in coalbed methane(CBM)field development[J].Journal of Natural Gas Science&Engineering,2016,34:1 237-1 250.
[21]LIU Huihu,SANG Shuxun,WANG Geoff G X,et al.Block scale investigation on gas content of coalbed methane reservoirs in southern Qinshui basin with statistical model and visual map[J].Journal of Petroleum Science&Engineering,2014,114(2):1-14.
[22]刘成林,朱杰,车长波,等.新一轮全国煤层气资源评价方法与结果[J].天然气工业,2009,29(11):130-132.LIU Chenglin,ZHU Jie,CHE Changbo,et al.Methodologies and results of the latest assessment of coalbed methane resources in China[J].Nature Gas lndustry,2009,29(11):130-132.
[23]秦勇,申建,王宝文,等.深部煤层气成藏效应及其耦合关系[J].石油学报,2012,33(1):48-54.QIN Yong,SHEN Jian,WANG Baowen,et al.Accumulation effects and coupling relationship of deep coalbed methane[J].Acta Petrolei Sinica,2012,33(1):48-54.
[24]陈刚,胡宗全,苏坤,等.鄂东南延川南深煤层煤体结构与产气量关系分析[J].煤炭科学技术,2016,44(12):107-112.CHEN Gang,HU Zongquan,SU Kun,et al.Analysis on relationship between coal structure and gas production quantity in deep coal seam of Yanchuannan Area at Southeast Ordos[J].Coal Science and Technology,2016,44(12):107-112.
[25]熊先钺,边利恒,王伟,等.韩城区块煤储层间接压裂地质主控因素研究[J].煤炭科学技术,2017,45(6):189-195.XIONG Xianyue,BIAN Liheng,WANG Wei,et al.Research on main geological controlling factors of coal reservoir indirect fracturing in Hancheng Block[J].Coal Science and Technology,2017,45(6):189-195.