高丰度煤层气富集区地球物理定量识别技术研究与应用
|
摘要
为提高高丰度煤层气富集区的评判精度,优化评判方式,增强评价体系的客观规律性和可移植性,本文从煤层气赋存地质条件出发对影响煤层气富集区的成藏机理进行研究,确定以含气量、煤层厚度、裂隙密度、上覆地层压力作为高丰度煤层气富集区评判的4个层次因素(评判指标).选择具有代表性和典型性的沁水盆地寺河矿区某块段为研究区,以该区三维地震数据体为基础,提取出作为高丰度煤层气富集区评判的4个指标.利用改进的层次分析法计算出各指标的权重,采用加权平均模型建立了高丰度煤层气富集区模糊综合评判体系.研究区实地调查的煤层气井的日产气量表明:评判结果与实际情况吻合较好.分析认为:将改进的层次分析法应用在高丰度煤层气富集区的地球物理识别中能定量展示高丰度煤层气富集区的精确位置和量值大小,预测结果可靠,具有良好的适用性和移植性.
In order to improve the precision of assessment in high abundance of coalbed methane-rich region,optimize the evaluation mode and perfect the portability and objective laws of evaluation system, this paper studied the accumulation mechanism of coalbed methane-rich region through the geological conditions of coalbed methane deposit,and selected gas content,coal seam thickness,fracture density,and overburden pressure as 4 level factors to evaluate high abundance of coalbed methane-rich region.Took a block of Sihe mine in Qinshui basin as representative and typical research area,the 4 factors were extracted from 3D seismic data volume in this area.Using the improved AHP weights to calculate each index weights,the weighted average model is adopted to establish a fuzzy comprehensive evaluation system in high abundance of coalbed methane-rich region.Tested by field investigation daily gas production of coalbed methane drilling,the results showed the evaluation results are in good agreement with the actual situation.In a word,applied the improved AHP in geophysics recognition in high abundance of coalbed methanerich region can quantitatively demonstrate the precise location and magnitude of the size of high abundance of coalbed methane-rich region,its evaluation is accurate and reliable,and has good applicability and portability.
In order to improve the precision of assessment in high abundance of coalbed methane-rich region,optimize the evaluation mode and perfect the portability and objective laws of evaluation system, this paper studied the accumulation mechanism of coalbed methane-rich region through the geological conditions of coalbed methane deposit,and selected gas content,coal seam thickness,fracture density,and overburden pressure as 4 level factors to evaluate high abundance of coalbed methane-rich region.Took a block of Sihe mine in Qinshui basin as representative and typical research area,the 4 factors were extracted from 3D seismic data volume in this area.Using the improved AHP weights to calculate each index weights,the weighted average model is adopted to establish a fuzzy comprehensive evaluation system in high abundance of coalbed methane-rich region.Tested by field investigation daily gas production of coalbed methane drilling,the results showed the evaluation results are in good agreement with the actual situation.In a word,applied the improved AHP in geophysics recognition in high abundance of coalbed methanerich region can quantitatively demonstrate the precise location and magnitude of the size of high abundance of coalbed methane-rich region,its evaluation is accurate and reliable,and has good applicability and portability.
引文
CHEN X P,HUO Q M,LIN J Det al.2013.The relation betweenCBM content and the elastic parameters of CBM reservoirs:Reasoning and initial probing[J].Chinese Journal Geophysics,56(8):2837-2848,doi:10.6038/cjg20130832.
DENG Z D,YE X,LONG F,et al.2013.Construction andinvestigation of groundwater remote sensing fuzzy assessmentindex[J].Chinese Journal Geophysics,56(11):3908-3916,doi:10.6038/cjg20131132.
DOU F K,KANG Y S,QIN S F,et al.2013.The coalbed methaneproduction potential method for optimization of wells locationselection[J].Journal of Coal Science and Engineering,19(2):210-218.
GUO D Y,FAN J Z,MA S Z,.et al.2007.Prediction method ofcoal and gas outburst by analytic hierarchy process and fuzzycomprehensive evaluation[J].Journal of University of Scienceand Technology Beijing,29(7):660-664,doi:10.3321/j.issn:1001-053X.2007.07.003.
LI C L,PENG C Y.2011.Research on the flow mechanism ofcoalbed methane[J].Lithologic Reservoirs,23(4):9-11+19,doi:10.3969/j.issn.1673-8926.2011.04.002.
LI Z Q,XIAN X F,HUANG G.2012.High precision andquantitative prediction mechanics method of coalbed methaneenrichment area in geo-stress and geothermal field[J].Journalof China Coal Society,S2:395-400.
MENG Z P,LIU C L,JI Y M.2013.Geological conditions ofcoalbed methane and shale has exploitation and their comparisonanalysis[J].Journal of China Coal Society,38(5):728-736.
MENG Z P,HOU Q L.2013.Coupling model of stress-dependentpermeability in high-rank coal reservoir and its controlmechanism[J].Chinese Journal Geophysics,56(2):667-675,doi:10.6038/cjg20130231.
PENG S P,CHEN H J,YANG R Z,et al.2006.Factorsfacilitating or limiting the use of AVO for coal-bed methane[J].Geophysics,71(4):C49-C56,doi:10.1190/1.2217137.
QI X M,ZHANG S C.2012.Application of seismic multi-attributefusion method based on D-S evidence theory in prediction ofCBM-enriched area[J].Applied Geophysics,9(1):80-86.
SANG S X,Liu H J,LI G Z,et al.1997.Generation andenrichment of coalbed methane I:gas yield in effective stage andconcentration of coalbed methane[J].Coal Geology&Exploration,25(6):14-17.
SONG Y,LIU S B,JU Y W,et al.2013.Coupling between gascontent and permeability controlling enrichment zones of highabundance coal bed methane[J].ACTA PETROLEI SINICA,34(3):417-426,doi:10.7623/syxb201303001.
WANG T K,ZHAO B Y,FU X S,et al.A comprehensive study ofthe refined structural interpretation and reservoir prediction inthe Ordovician burial hill in the Nanpu Sag[J].Progress inGeophysics 2010,25(2):548-554,doi:10.3969/j.issn.1004-2903.2010.02.024.
WANG X B,CHEN J C,GUO Q S,et al.2013.Research of theCSAMT exploration mode and experiment for the coalbedmethane enrichment region in the north Qinshui basin[J].JChinese Journal of Geophysics,56(12):4310-4323,doi:10.6038/cjg20131233.
YAN Z F,JU Y W,TANG S H,et al.2013.Numerical simulationstudy of fracturing process in coalbed methane reservoirs insouthern Qinshui basin[J].Chinese Journal Geophysics,56(5):1734-1744,doi:10.6038/cjg20130531.
YANG T T,LV F L,WANG B,et al.2013.Geophysicalcharacteristics and genetic mechanism of the gas chimney indeepwater area of southern qiongdongnan basin[J].Progress inGeophysics 2013,28(5):2634-2641,doi:10.6038/pg20130544.
YU Z J,DONG D D,SONG W Q,et al.2012.Porosity predictionwith co-Kriging method controlled by sedimentary facies[J].Progress in Geophysics,(4):1581-1587doi:10.6038/j.issn.1004-2903.2012.04.035.
ZHANG T J,SU N,QIAO B M,et al.2010.Prediction of coal andgas outburst level based on improved AHP[J].Journal of XianUniversity of Science and Technology,30(5):536-542,doi:10.3969/j.issn.1672-9315.2010.05.006..
陈信平,霍全明,林建东,等.2013.煤层气储层含气量与其弹性参数之间的关系——思考与初探[J].地球物理学报,56(8):2837-2848,doi:10.6038/cjg20130832.
邓正栋,叶欣,龙凡,等.2013.地下水遥感模糊评估指数的构建与研究[J].地球物理学报,56(11):3908-3916,doi:10.6038/cjg20131132.
郭德勇,范金志,马世志,等.2007.煤与瓦斯突出预测层次分析-模糊综合评判方法[J].北京科技大学学报,29(7):660-664,doi:10.3321/j.issn:1001-053X.2007.07.003.
李传亮,彭朝阳.2011.煤层气的开采机理研究[J].岩性油气藏,23(9):9-11+19,doi:10.3969/j.issn.1673-8926.2011.04.002.
李志强,鲜学福,黄滚.2012.地应力地温场中煤层气富集区高精度定量预测的力学方法[J].煤炭学报,S2:395-400.
孟召平,刘翠丽,纪懿明.2013.煤层气/页岩气开发地质条件及其对比分析[J].煤炭学报,38(5):728-736.
孟召平,侯泉林.2013.高煤级煤储层渗透性与应力耦合模型及控制机理[J].地球物理学报,56(2):667-675,doi:10.6038/cjg20130231.
桑树勋,刘焕杰,李贵中,等.1997.煤层气生成与煤层气富集I:有效阶段生气量与煤层气富集[J].煤田地质与勘探,25(6):14-17.
宋岩,柳少波,琚宜文,等.2013.含气量和渗透率耦合作用对高丰度煤层气富集区的控制[J].石油学报,34(3):417-426,doi:10.7623/syxb201303001.
王童奎,赵宝银,付兴深,等.2010.南堡凹陷奥陶系潜山精细构造解释和储层预测综合研究[J].地球物理学进展,25(2):548-554,doi:10.3969/j.issn.1004-2903.2010.02.024.
王绪本,陈进超,郭全仕,等.2013.沁水盆地北部煤层气富集区CSAMT勘探试验研究[J].地球物理学报,56(12):4310-4323,doi:10.6038/cjg20131233.
颜志丰,琚宜文,唐书恒,等.2013.沁水盆地南部煤层气储层压裂过程数值模拟研究[J].地球物理学报,56(5):1734-1744,doi:10.6038/cjg20130531.
杨涛涛,吕福亮,王彬,等.2013.琼东南盆地南部深水区气烟囱地球物理特征及成因分析[J].地球物理学进展,28(5):2634-2641,doi:10.6038/pg20130544.
于正军,董冬冬,宋维琪,等.2012.相带控制下协克里金方法孔隙度预测[J].地球物理学进展,(4):1581-1587,doi:10.6038/j.issn.1004-2903.2012.04.035.
张天军,苏琳,乔宝明,等.2010.改进的层次分析法在煤与瓦斯突出危险等级预测中的应用[J].西安科技大学学报,30(5):536-542,doi:10.3969/j.issn.1672-9315.2010.05.006.
DENG Z D,YE X,LONG F,et al.2013.Construction andinvestigation of groundwater remote sensing fuzzy assessmentindex[J].Chinese Journal Geophysics,56(11):3908-3916,doi:10.6038/cjg20131132.
DOU F K,KANG Y S,QIN S F,et al.2013.The coalbed methaneproduction potential method for optimization of wells locationselection[J].Journal of Coal Science and Engineering,19(2):210-218.
GUO D Y,FAN J Z,MA S Z,.et al.2007.Prediction method ofcoal and gas outburst by analytic hierarchy process and fuzzycomprehensive evaluation[J].Journal of University of Scienceand Technology Beijing,29(7):660-664,doi:10.3321/j.issn:1001-053X.2007.07.003.
LI C L,PENG C Y.2011.Research on the flow mechanism ofcoalbed methane[J].Lithologic Reservoirs,23(4):9-11+19,doi:10.3969/j.issn.1673-8926.2011.04.002.
LI Z Q,XIAN X F,HUANG G.2012.High precision andquantitative prediction mechanics method of coalbed methaneenrichment area in geo-stress and geothermal field[J].Journalof China Coal Society,S2:395-400.
MENG Z P,LIU C L,JI Y M.2013.Geological conditions ofcoalbed methane and shale has exploitation and their comparisonanalysis[J].Journal of China Coal Society,38(5):728-736.
MENG Z P,HOU Q L.2013.Coupling model of stress-dependentpermeability in high-rank coal reservoir and its controlmechanism[J].Chinese Journal Geophysics,56(2):667-675,doi:10.6038/cjg20130231.
PENG S P,CHEN H J,YANG R Z,et al.2006.Factorsfacilitating or limiting the use of AVO for coal-bed methane[J].Geophysics,71(4):C49-C56,doi:10.1190/1.2217137.
QI X M,ZHANG S C.2012.Application of seismic multi-attributefusion method based on D-S evidence theory in prediction ofCBM-enriched area[J].Applied Geophysics,9(1):80-86.
SANG S X,Liu H J,LI G Z,et al.1997.Generation andenrichment of coalbed methane I:gas yield in effective stage andconcentration of coalbed methane[J].Coal Geology&Exploration,25(6):14-17.
SONG Y,LIU S B,JU Y W,et al.2013.Coupling between gascontent and permeability controlling enrichment zones of highabundance coal bed methane[J].ACTA PETROLEI SINICA,34(3):417-426,doi:10.7623/syxb201303001.
WANG T K,ZHAO B Y,FU X S,et al.A comprehensive study ofthe refined structural interpretation and reservoir prediction inthe Ordovician burial hill in the Nanpu Sag[J].Progress inGeophysics 2010,25(2):548-554,doi:10.3969/j.issn.1004-2903.2010.02.024.
WANG X B,CHEN J C,GUO Q S,et al.2013.Research of theCSAMT exploration mode and experiment for the coalbedmethane enrichment region in the north Qinshui basin[J].JChinese Journal of Geophysics,56(12):4310-4323,doi:10.6038/cjg20131233.
YAN Z F,JU Y W,TANG S H,et al.2013.Numerical simulationstudy of fracturing process in coalbed methane reservoirs insouthern Qinshui basin[J].Chinese Journal Geophysics,56(5):1734-1744,doi:10.6038/cjg20130531.
YANG T T,LV F L,WANG B,et al.2013.Geophysicalcharacteristics and genetic mechanism of the gas chimney indeepwater area of southern qiongdongnan basin[J].Progress inGeophysics 2013,28(5):2634-2641,doi:10.6038/pg20130544.
YU Z J,DONG D D,SONG W Q,et al.2012.Porosity predictionwith co-Kriging method controlled by sedimentary facies[J].Progress in Geophysics,(4):1581-1587doi:10.6038/j.issn.1004-2903.2012.04.035.
ZHANG T J,SU N,QIAO B M,et al.2010.Prediction of coal andgas outburst level based on improved AHP[J].Journal of XianUniversity of Science and Technology,30(5):536-542,doi:10.3969/j.issn.1672-9315.2010.05.006..
陈信平,霍全明,林建东,等.2013.煤层气储层含气量与其弹性参数之间的关系——思考与初探[J].地球物理学报,56(8):2837-2848,doi:10.6038/cjg20130832.
邓正栋,叶欣,龙凡,等.2013.地下水遥感模糊评估指数的构建与研究[J].地球物理学报,56(11):3908-3916,doi:10.6038/cjg20131132.
郭德勇,范金志,马世志,等.2007.煤与瓦斯突出预测层次分析-模糊综合评判方法[J].北京科技大学学报,29(7):660-664,doi:10.3321/j.issn:1001-053X.2007.07.003.
李传亮,彭朝阳.2011.煤层气的开采机理研究[J].岩性油气藏,23(9):9-11+19,doi:10.3969/j.issn.1673-8926.2011.04.002.
李志强,鲜学福,黄滚.2012.地应力地温场中煤层气富集区高精度定量预测的力学方法[J].煤炭学报,S2:395-400.
孟召平,刘翠丽,纪懿明.2013.煤层气/页岩气开发地质条件及其对比分析[J].煤炭学报,38(5):728-736.
孟召平,侯泉林.2013.高煤级煤储层渗透性与应力耦合模型及控制机理[J].地球物理学报,56(2):667-675,doi:10.6038/cjg20130231.
桑树勋,刘焕杰,李贵中,等.1997.煤层气生成与煤层气富集I:有效阶段生气量与煤层气富集[J].煤田地质与勘探,25(6):14-17.
宋岩,柳少波,琚宜文,等.2013.含气量和渗透率耦合作用对高丰度煤层气富集区的控制[J].石油学报,34(3):417-426,doi:10.7623/syxb201303001.
王童奎,赵宝银,付兴深,等.2010.南堡凹陷奥陶系潜山精细构造解释和储层预测综合研究[J].地球物理学进展,25(2):548-554,doi:10.3969/j.issn.1004-2903.2010.02.024.
王绪本,陈进超,郭全仕,等.2013.沁水盆地北部煤层气富集区CSAMT勘探试验研究[J].地球物理学报,56(12):4310-4323,doi:10.6038/cjg20131233.
颜志丰,琚宜文,唐书恒,等.2013.沁水盆地南部煤层气储层压裂过程数值模拟研究[J].地球物理学报,56(5):1734-1744,doi:10.6038/cjg20130531.
杨涛涛,吕福亮,王彬,等.2013.琼东南盆地南部深水区气烟囱地球物理特征及成因分析[J].地球物理学进展,28(5):2634-2641,doi:10.6038/pg20130544.
于正军,董冬冬,宋维琪,等.2012.相带控制下协克里金方法孔隙度预测[J].地球物理学进展,(4):1581-1587,doi:10.6038/j.issn.1004-2903.2012.04.035.
张天军,苏琳,乔宝明,等.2010.改进的层次分析法在煤与瓦斯突出危险等级预测中的应用[J].西安科技大学学报,30(5):536-542,doi:10.3969/j.issn.1672-9315.2010.05.006.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心