煤系烃源岩有机碳含量测井响应特征与定量预测模型
|
摘要
煤系地层富含有机岩石,导致测井响应特征复杂。以实测TOC含量数据为基础,分析了煤系烃源岩中煤岩、炭质泥岩和泥岩有机碳含量的测井响应特征,发现电阻率、声波时差、自然伽马、密度和中子孔隙度等测井参数与有机碳含量相关性较高,并基于此建立了针对不同岩性煤系烃源岩有机碳含量计算模型,即多元回归模型和Δlog R模型。结合研究层段,分别建立了一元、二元、五元线性回归模型及重叠法模型,进行TOC含量计算并做了误差分析。结果表明:五元回归模型的计算误差最小,但在没有实测TOC含量数据层段计算误差较大;重叠法计算误差最大,但其整个层段的TOC含量预测值更符合岩性特征。煤系地层有机碳预测研究旨在为后续煤系烃源岩综合评价提供参考。
Coal-bearing strata are rich in organic rocks,which can result in complex logging response. Based on the determined TOC data,the logging response characteristics of organic carbon content in coal,carbonaceous mudstone and mudstone were analyzed. It was found that the organic carbon content and parameters of the electrical resistivity log,acoustic log,natural gamma log,density log and neutron porosity log were well correlated. According to previous analysis,multiple regression and Δlog R models for calculating the organic carbon content of source rocks with different lithologies in coal measures were obtained. Combined with the study formation,single factor model,binary regression model,five variables regression model and the overlapping model were respectively established. Moreover,the models mentioned above were used for calculating the TOC content and the error analysis were conducted. Results show that the calculation error of five variables regression model is the smallest,but is larger at the intervals where there are no measured TOC data; the calculation error of overlapping method is the largest,while the predicted TOC content value is more consistent with the lithological characteristics over the whole interval. The study of organic carbon content prediction in coal measures aims to provide a reference for the comprehensive evaluation of the geochemical parameter in coal-bearing source rock,which also has some referential value for related application research in the future.
Coal-bearing strata are rich in organic rocks,which can result in complex logging response. Based on the determined TOC data,the logging response characteristics of organic carbon content in coal,carbonaceous mudstone and mudstone were analyzed. It was found that the organic carbon content and parameters of the electrical resistivity log,acoustic log,natural gamma log,density log and neutron porosity log were well correlated. According to previous analysis,multiple regression and Δlog R models for calculating the organic carbon content of source rocks with different lithologies in coal measures were obtained. Combined with the study formation,single factor model,binary regression model,five variables regression model and the overlapping model were respectively established. Moreover,the models mentioned above were used for calculating the TOC content and the error analysis were conducted. Results show that the calculation error of five variables regression model is the smallest,but is larger at the intervals where there are no measured TOC data; the calculation error of overlapping method is the largest,while the predicted TOC content value is more consistent with the lithological characteristics over the whole interval. The study of organic carbon content prediction in coal measures aims to provide a reference for the comprehensive evaluation of the geochemical parameter in coal-bearing source rock,which also has some referential value for related application research in the future.
引文
[1]于翔涛.测井技术在烃源岩评价中的应用[J].长江大学学报:自然科学版,理工卷,2009,6(2):198-200.Yu Xiangtao.Application of well logging technology to source rocks evaluation[J].Journal of Yangtze University(Natural Science Edition),2009,6(2):198-200.
[2]朱光有,金强,张林晔.用测井信息获取烃源岩的地球化学参数研究[J].测井技术,2003,27(2):104-109.Zhu Guangyou,Jin Qiang,Zhang Linye.Using log information to analyse the geochemical characteristics of source rocks in Jiyang depression[J].Well logging Technology,2003,27(2):104-109.
[3]黄文辉,敖卫华,肖秀玲,等.鄂尔多斯盆地侏罗纪含煤岩系生烃潜力评价[J].煤炭学报,2011,36(3):461-467.Huang Wenhui,Ao Weihua,Xiao Xiuling,et al.The assessment of the capacity for producing hadrocarbon in the Jurrasic coal and associate rocks in Ordos Basin[J].Journal of China Coal Society,2011,36(3):461-467.
[4]邓虎成,周文,张娟,等.塔中地区奥陶系烃源岩测井定量识别及评价[J].物探化探计算术,2010,32(4):380-385,337.Deng Hucheng,Zhou Wen,Zhang Juan,et al.The quantitative identifying and evaluation about Ordovician source rocks with logging in the middle Tazhong area of Tarim basin[J].Computing Technique for Geophysial and Geochemical Exploration,2010,32(4):380-385,337.
[5]张功成.源热共控论[J].石油学报,2012,33(5):723-738.Zhang Gongcheng.Co-control of source and heat[J].Acta Petrolei Sinica,2012,33(5):723-738.
[6]许晓宏,黄海平,卢松年.测井资料与烃源岩有机碳含量的定量关系研究[J].江汉石油学院学报,1998,20(3):8-12.Xu Xiaohong,Huang Haiping,Lu Songnian.A quantitative relationship between well logging information and organic carbon content[J].Journal of Jianghan Petroleum Institute,1998,20(3):8-12.
[7]王杰,张晓宝,陈践发.苏里格庙气田煤系烃源岩生烃特征评价[J].煤田地质与勘探,2005,33(2):26-29.Wang Jie,Zhang Xiaobao,Chen Jianfa.Evaluation of the hydrocarbon-generating characteristic for coal-bearing hydrocarbon source rocks of Suligemiao gas field[J].Coal Geology and Exploration,2005,33(2):26-29.
[8]宋占东,查明,张小莉,等.烃源岩有机碳测井定量评价及在高邮凹陷永安地区的应用[J].西安石油大学学报(自然科学版),2009,24(2):18-20,5.Song Zhandong,Cha Ming,Zhang Xiaoli,et al.A method for the quantitative evaluation of the organic carbon content of the hydrocarbon source rock from well logging information and its application in Yongan Oilfield in Gaoyou Sag[J].Journal of Xi’an Shiyou University(Natural Science Edition),2009,24(2):18-20,5.
[9]张志伟,张海龙.测井评价烃源岩的方法及其应用效果[J].石油勘探与开发,2000,27(3):84-87.Zhang Zhiwei,Zhang Hailong.A method of source rock evaluation by well-logging and its application result[J].Petroleum Exploration and Development,2000,27(3):84-87.
[10]王方雄,侯英姿,夏季.烃源岩测井评价新进展[J].测井技术,2002,26(2):89-93.Wang Fangxiong,Hou Yingzi,Xia Ji.New advances in hydrocarbon source rocks evaluation[J].Well Logging Technology,2002,26(2):89-93.
[11]陈建平,赵长毅,何忠华.煤系有机质生烃潜力评价标准探讨[J].石油勘探与开发,1997,24(1):1-5,91.Chen Jianping,Zhao Changyi,He Zhonghua.The discussion of evoluation criteria for hydrocarbon-generating potential of organic matter in the coal measures[J].Petroleum Exploration and Development,1997,24(1):1-5,91.
[12]Meyer B L,Nederlof M H.Identification of source rocks on wire line logs by density/resistivity and sonic transit time/resistivity crossplots[J].AAPG,1984,68(2):121-129.
[13]王贵文,朱振宇,朱广宇.烃源岩测井识别与评价方法研究[J].石油勘探与开发,2002,29(4):50-52.Wang Guiwen,Zhu Zhenyu,Zhu Guangyu.Longging identification and evaluation of Cambrian-Ordovician source rocks in syneclise of Tarim Basin[J].Petroleum Exploration and Development,2002,29(4):50-52.
[14]Schmoker J W.Determination of organic-matter content of Appalachian Devonian shales from gamma ray logs[J].AAPG Bulletin,1981,65:1285-1298.
[15]Schmoker J W,Heater T C.Organic carbon in Bakken formation,united states portion of Williston Basin[J].AAPG Bulletin,1983,67:3165-3174.
[16]Schmoker J W.Sandstone porosity as function of thermal maturity[J].Geology,1988,16:1007-1010.
[17]Mohammad Reza Kamalia,Ahad Allah Mirshady.Total organic carbon content determined from well logs usingΔlog R and Neuro Fuzzy techniques[J].Journal of Petroleum Science and Engineering,2004,45:141-148.
[18]Amiri Bakhtiar H,Telmadarreie A,Shaye M.Estimating total organic carbon content and source rock evaluation,applyingΔlog R and neural network methods:Ahwaz and Marun Oilfields,SW of Iran[J].Petroleum Science and Technology,2011,29:1691-1704.
[19]Passey Q R,Creaney S,Kulla J B,et al.A practical model for organic richness from porosity and resistivity logs[J].AAPG,1990,74(12):1777-1794.
[20]徐思煌,朱义清.烃源岩有机碳含量的测井响应特征与定量预测模型——以珠江口盆地文昌组烃源岩为例[J].石油实验地质,2010,32(3):290-295,300.Xu Sihuang,Zhu Yiqing.Well logs response and prediction model of organic carbon content in source rocks:A case study from the source rock of Wenchang Formation the Pearl Mouth Basin[J].Petroleum Geology&Experiment,2010,32(3):290-295,300.
[21]胡慧婷,卢双舫,刘超,等.测井资料计算烃源岩有机碳含量模型对比及分析[J].沉积学报,2003,29(6):1199-1205.Hu Huiting,Lu Shuangfang,Liu Chao,et al.Models for calculating organic carbon content from logging information:Comparison and analysis[J].Acta Sedimentologica Sinica,2003,29(6):1199-1205.
[22]徐银波,柳蓉,刘招君,等.梅河盆地古近纪梅河组有机质富集规律及沉积演化研究[J].煤炭学报,2013,38(11):2007-2016.Xu Yinbo,Liu Rong,Liu Zhaojun,et al.Deposition evolution and enrichment pattern of organic matter of the Meihe Formation in the Paleogene,Meihe Basin[J].Journal of China Coal Society,2013,38(11):2007-2016.
[23]何希鹏,张青.测井资料在江陵凹陷烃源岩评价中的应用[J].断块油气田,2010,17(5):637-641.He Xipeng,Zhang Qing.Application of logging data in evaluation of source rocks in Jiangling depression[J].Fault-Block Oil&Gas Field,2010,17(5):637-641.
[24]Zhang Yanzhong,Xiao Lin.Petrographic characteristics and depositional environment of No.6 coal from Xiaoyugou Mine,Jungar Coalfield,China[J].International Journal of Coal Science&Technology,2014,1(4):395-401.
[25]鲁静,邵龙义,杨敏芳,等.陆相盆地沼泽体系煤相演化、层序地层与古环境[J].煤炭学报,2014,39(12):2473-2481.Lu Jing,Shao Longyi,Yang Minfang,et al.Coal facies evolution,sequence stratigraphy and palaeoenvironment of swamp in terrestrial basin[J].Journal of China Coal Society,2014,39(12):2473-2481.
[2]朱光有,金强,张林晔.用测井信息获取烃源岩的地球化学参数研究[J].测井技术,2003,27(2):104-109.Zhu Guangyou,Jin Qiang,Zhang Linye.Using log information to analyse the geochemical characteristics of source rocks in Jiyang depression[J].Well logging Technology,2003,27(2):104-109.
[3]黄文辉,敖卫华,肖秀玲,等.鄂尔多斯盆地侏罗纪含煤岩系生烃潜力评价[J].煤炭学报,2011,36(3):461-467.Huang Wenhui,Ao Weihua,Xiao Xiuling,et al.The assessment of the capacity for producing hadrocarbon in the Jurrasic coal and associate rocks in Ordos Basin[J].Journal of China Coal Society,2011,36(3):461-467.
[4]邓虎成,周文,张娟,等.塔中地区奥陶系烃源岩测井定量识别及评价[J].物探化探计算术,2010,32(4):380-385,337.Deng Hucheng,Zhou Wen,Zhang Juan,et al.The quantitative identifying and evaluation about Ordovician source rocks with logging in the middle Tazhong area of Tarim basin[J].Computing Technique for Geophysial and Geochemical Exploration,2010,32(4):380-385,337.
[5]张功成.源热共控论[J].石油学报,2012,33(5):723-738.Zhang Gongcheng.Co-control of source and heat[J].Acta Petrolei Sinica,2012,33(5):723-738.
[6]许晓宏,黄海平,卢松年.测井资料与烃源岩有机碳含量的定量关系研究[J].江汉石油学院学报,1998,20(3):8-12.Xu Xiaohong,Huang Haiping,Lu Songnian.A quantitative relationship between well logging information and organic carbon content[J].Journal of Jianghan Petroleum Institute,1998,20(3):8-12.
[7]王杰,张晓宝,陈践发.苏里格庙气田煤系烃源岩生烃特征评价[J].煤田地质与勘探,2005,33(2):26-29.Wang Jie,Zhang Xiaobao,Chen Jianfa.Evaluation of the hydrocarbon-generating characteristic for coal-bearing hydrocarbon source rocks of Suligemiao gas field[J].Coal Geology and Exploration,2005,33(2):26-29.
[8]宋占东,查明,张小莉,等.烃源岩有机碳测井定量评价及在高邮凹陷永安地区的应用[J].西安石油大学学报(自然科学版),2009,24(2):18-20,5.Song Zhandong,Cha Ming,Zhang Xiaoli,et al.A method for the quantitative evaluation of the organic carbon content of the hydrocarbon source rock from well logging information and its application in Yongan Oilfield in Gaoyou Sag[J].Journal of Xi’an Shiyou University(Natural Science Edition),2009,24(2):18-20,5.
[9]张志伟,张海龙.测井评价烃源岩的方法及其应用效果[J].石油勘探与开发,2000,27(3):84-87.Zhang Zhiwei,Zhang Hailong.A method of source rock evaluation by well-logging and its application result[J].Petroleum Exploration and Development,2000,27(3):84-87.
[10]王方雄,侯英姿,夏季.烃源岩测井评价新进展[J].测井技术,2002,26(2):89-93.Wang Fangxiong,Hou Yingzi,Xia Ji.New advances in hydrocarbon source rocks evaluation[J].Well Logging Technology,2002,26(2):89-93.
[11]陈建平,赵长毅,何忠华.煤系有机质生烃潜力评价标准探讨[J].石油勘探与开发,1997,24(1):1-5,91.Chen Jianping,Zhao Changyi,He Zhonghua.The discussion of evoluation criteria for hydrocarbon-generating potential of organic matter in the coal measures[J].Petroleum Exploration and Development,1997,24(1):1-5,91.
[12]Meyer B L,Nederlof M H.Identification of source rocks on wire line logs by density/resistivity and sonic transit time/resistivity crossplots[J].AAPG,1984,68(2):121-129.
[13]王贵文,朱振宇,朱广宇.烃源岩测井识别与评价方法研究[J].石油勘探与开发,2002,29(4):50-52.Wang Guiwen,Zhu Zhenyu,Zhu Guangyu.Longging identification and evaluation of Cambrian-Ordovician source rocks in syneclise of Tarim Basin[J].Petroleum Exploration and Development,2002,29(4):50-52.
[14]Schmoker J W.Determination of organic-matter content of Appalachian Devonian shales from gamma ray logs[J].AAPG Bulletin,1981,65:1285-1298.
[15]Schmoker J W,Heater T C.Organic carbon in Bakken formation,united states portion of Williston Basin[J].AAPG Bulletin,1983,67:3165-3174.
[16]Schmoker J W.Sandstone porosity as function of thermal maturity[J].Geology,1988,16:1007-1010.
[17]Mohammad Reza Kamalia,Ahad Allah Mirshady.Total organic carbon content determined from well logs usingΔlog R and Neuro Fuzzy techniques[J].Journal of Petroleum Science and Engineering,2004,45:141-148.
[18]Amiri Bakhtiar H,Telmadarreie A,Shaye M.Estimating total organic carbon content and source rock evaluation,applyingΔlog R and neural network methods:Ahwaz and Marun Oilfields,SW of Iran[J].Petroleum Science and Technology,2011,29:1691-1704.
[19]Passey Q R,Creaney S,Kulla J B,et al.A practical model for organic richness from porosity and resistivity logs[J].AAPG,1990,74(12):1777-1794.
[20]徐思煌,朱义清.烃源岩有机碳含量的测井响应特征与定量预测模型——以珠江口盆地文昌组烃源岩为例[J].石油实验地质,2010,32(3):290-295,300.Xu Sihuang,Zhu Yiqing.Well logs response and prediction model of organic carbon content in source rocks:A case study from the source rock of Wenchang Formation the Pearl Mouth Basin[J].Petroleum Geology&Experiment,2010,32(3):290-295,300.
[21]胡慧婷,卢双舫,刘超,等.测井资料计算烃源岩有机碳含量模型对比及分析[J].沉积学报,2003,29(6):1199-1205.Hu Huiting,Lu Shuangfang,Liu Chao,et al.Models for calculating organic carbon content from logging information:Comparison and analysis[J].Acta Sedimentologica Sinica,2003,29(6):1199-1205.
[22]徐银波,柳蓉,刘招君,等.梅河盆地古近纪梅河组有机质富集规律及沉积演化研究[J].煤炭学报,2013,38(11):2007-2016.Xu Yinbo,Liu Rong,Liu Zhaojun,et al.Deposition evolution and enrichment pattern of organic matter of the Meihe Formation in the Paleogene,Meihe Basin[J].Journal of China Coal Society,2013,38(11):2007-2016.
[23]何希鹏,张青.测井资料在江陵凹陷烃源岩评价中的应用[J].断块油气田,2010,17(5):637-641.He Xipeng,Zhang Qing.Application of logging data in evaluation of source rocks in Jiangling depression[J].Fault-Block Oil&Gas Field,2010,17(5):637-641.
[24]Zhang Yanzhong,Xiao Lin.Petrographic characteristics and depositional environment of No.6 coal from Xiaoyugou Mine,Jungar Coalfield,China[J].International Journal of Coal Science&Technology,2014,1(4):395-401.
[25]鲁静,邵龙义,杨敏芳,等.陆相盆地沼泽体系煤相演化、层序地层与古环境[J].煤炭学报,2014,39(12):2473-2481.Lu Jing,Shao Longyi,Yang Minfang,et al.Coal facies evolution,sequence stratigraphy and palaeoenvironment of swamp in terrestrial basin[J].Journal of China Coal Society,2014,39(12):2473-2481.