柿庄南区块煤层气储层有利区综合评价研究
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摘要
为克服煤层气有利区评价参数缺失不全、主控参数权重难确定等问题,通过灰色关联方法优选煤层气有利区评价主控因素,借助判断矩阵量化评价权重,为煤层气有利区快速评价提供客观可靠的快速评价方法。充分利用参数井和生产井的钻井数据、压裂数据及生产数据等动静态参数对柿庄南区块主力煤储层特征进行精细评价,构建多层次模糊数学评价模型,预测了有利储层的分布,划分出三级开发地质单元。研究结果表明:区块煤储层以Ⅰ类和Ⅱ类储层为主,Ⅰ类储层主要集中在中部地区,沿NNE向呈条带状分布,Ⅲ类储层则分布于北部和南部地区,其他地区为Ⅱ类区。此外,通过生产动态进行结果验证,评价结果与产气效果具有很好的吻合性;划分出23个三级开发地质单元,认为C-I1、C-I2、C-I3和C-I4为煤层气提产有利区。
In order to overcome the problems such as lack of evaluation parameters of the favorable area of coalbed methane and difficulty in determining the weight of the main control parameters,the main control factors of the coalbed methane favorable area are evaluated by the grey correlation method,and the weights are quantitatively evaluated by the judgment matrix to provide objective analysis for the rapid evaluation of the favorable area of coalbed methane.On this basis,making full use of the dynamic and static parameters such as drilling data,fracturing data and production data of the parametric wells and production wells to finely evaluate the characteristics of the main coal seams in the south block of Shizhuang Area,and a multi-level mathematics evaluation model was constructed to predict the distribution of favorable reservoirs.The block was divided into three levels of development geological units.The results show that the block coal reservoirs are dominated by Class I and Class Ⅱ reservoirs.The Class Ⅰ reservoirs are mainly located in the central part,distributed along the NNE direction,and the Class Ⅲ reservoirs are distributed in the north and south.The remaining areas are Class Ⅱ reservoirs.In addition,according to the production dynamics,the results of the evaluation are in good agreement with the gas production; 23 third-level development geological units are divided,and C-I1,C-I2,C-I3 and C-I4 are considered as favorable areas for gas extraction yields.
In order to overcome the problems such as lack of evaluation parameters of the favorable area of coalbed methane and difficulty in determining the weight of the main control parameters,the main control factors of the coalbed methane favorable area are evaluated by the grey correlation method,and the weights are quantitatively evaluated by the judgment matrix to provide objective analysis for the rapid evaluation of the favorable area of coalbed methane.On this basis,making full use of the dynamic and static parameters such as drilling data,fracturing data and production data of the parametric wells and production wells to finely evaluate the characteristics of the main coal seams in the south block of Shizhuang Area,and a multi-level mathematics evaluation model was constructed to predict the distribution of favorable reservoirs.The block was divided into three levels of development geological units.The results show that the block coal reservoirs are dominated by Class I and Class Ⅱ reservoirs.The Class Ⅰ reservoirs are mainly located in the central part,distributed along the NNE direction,and the Class Ⅲ reservoirs are distributed in the north and south.The remaining areas are Class Ⅱ reservoirs.In addition,according to the production dynamics,the results of the evaluation are in good agreement with the gas production; 23 third-level development geological units are divided,and C-I1,C-I2,C-I3 and C-I4 are considered as favorable areas for gas extraction yields.
引文
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[11]孟召平,刘姗姗,王保玉,等.晋城矿区煤体结构及其测井响应特征研究[J].煤炭科学技术,2015,43(2):58-63.MENG Zhaoping,LIU Shanshan,WANG Baoyu,et al. Study on feature of coal body struction and logging response in Jincheng Mining Area[J]. Coal Science and Technology,2015,43(2):58-63.
[12]陈信平,霍全明,林建东,等.煤层气储层含气量与其弹性参数之间的关系[J].地球物理学报,2013,56(8):2838-2848.CHEN Xinping,HUO Quanming,LIN Jiandong,et al. The Relation between CBM content and the elastic parameters of CBM reservoirs[J]. Chinese Journal of Geophysice,2013,56(8):2838-2848.
[13]刘之的,杨秀春,陈彩红,等.鄂东气田煤层气储层测井综合评价方法研究[J].测井技术,2013,37(3):289-293.LIU Zhidi,YANG Xiuchun,CHEN Caihong,et al. Comprehensive log evaluation for coalbed methane reservoir in eastern block of Ordos Basin[J],Well Logging Technology,2013,37(3):289-293.
[14]王安民,曹代勇,魏迎春.煤层气选区评价方法探讨[J].煤炭学报,2017,42(4):950-958.WANG Anze,CAO Daiyong,WEI Yingchun. Discussion on methods for selected areas evaluation of coalbed methane:A case study of southern Junggar Basin[J]. Journal of China Coal Society,2017,42(4):950-958.
[15]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 Tcchnology,2011,35(5):441-446.
[16]傅雪海,秦勇,李贵中,等.沁水盆地中-南部煤储层渗透率主控因素分析[J].煤田地质与勘探,2001,29(3):16-19.FU Xuehai,QIN Yong,LI Guizhong,et al. An analysis on the principal control factor of coal reservoir permeability in Center and Southern Qinshui Basin[J]. Coal Geology and Exploration,2001,29(3):16-19.
[17]连承波,李汉林.地应力对煤储层渗透率影响的机理研究[J].煤田地质与勘探,2005,33(2):30-32.LIAN Chengbo,LI Hanlin.Mechanism research about effect of insitu stress on coalbed permeability[J].Coal Geology and Exploration,2005,33(2):30-32.
[18]连承波,钟建华,赵永军,等.基于试井资料分析的煤储层渗透率定量预测模型[J].辽宁工程技术大学学报:自然科学版,2008,27(4):481-484.LIAN Chengbo,ZHONG Jianhua,ZHAO Yongjun,et al.Prediction of coal reservoir permeability based on analysis of well test data[J]. Journal of Liaoning Technical University:National Science,2008,27(4):481-484.
[19]孟召平,蓝强,刘翠丽,等.鄂尔多斯盆地东南缘地应力、储层压力及其耦合关系[J].煤炭学报,2013,38(1):122-128.MENG Zhaoping,LAN Qiang,LIU Cuili,et al. In-situ and coal reservoir pressure in Southeast margin of Ordos basin and their coupling relation[J]. Journal of China Coal Society,2013,38(1):122-128.
[20]王哲,徐礼贵,付晶,等.鄂尔多斯盆地东缘BD区块煤层气富集沉积控制作用及有利区预测[J].天然气地球科学,2016,27(2):387-396.WANG Zhe,XU Ligui,FU Jing,et al.Sedimentary control of coalbed methane accumulation and prediction of favorable area in the Area BD,eastern margin of Ordos Basin[J]. Natural Gas Geoscience,2016,27(2):387-396.
[2]吕玉民,梁建设,柳迎红,等.基于测井信息的煤层气有利区多层次模糊综合评价模型-以寿阳区块为例[J].煤田地质与勘探,2016,44(12):56-61.LYU Yumin,LIANG Jianshe,LIU Yinghong,et al. Multi-level fuzzy comprehensive evaluation model for favorable coalbed methane development area based on logging information:a case of Shouyang Block[J]. Coal Geology&Exploration,2016,44(12):56-61.
[3]徐刚,杜文凤,冀超辉,等.基于证据理论的煤层气储层评价方法[J].煤田地质与勘探,2010,38(4):30-37.XU Gang,DU Wenfeng,JI Chaohui,et al. Evaluation method of coalbed methane reservoirs based on evidence theory[J],Coal Geology and Exploration,2010,38(4):30-37.
[4]许婷,伏海蛟,马英哲,等.准噶尔盆地东南缘煤层气勘探目标优选[J].特种油气藏,2017,24(2):18-23.XU Ting,FU Haijiao,MA Yingzhe,et al.Selection of CBM exploration targets in southeastern margin of Junggar Basin[J].Special Oil and Reservoirs,2017,24(2):18-23.
[5]孔锐,张哨楠.煤层气储层评价方法的选择[J].地质通报,2012,31(4):586-593.KONG Rui,ZHANG Shaonan. The selection of evaluation methods for coalbed methane reservoirs[J]. Geological Bulletin of China,2012,31(4):586-593.
[6]王明寿,汤达祯,魏永佩,等.沁水盆地北端煤层气储层特征及富集机制[J].石油实验地质,2006,28(5):440-444.WANG Mingshou,TANG Dazhen,WEI Yongpei,et al. Reservoir characteristics and enrichment mechanism of the coalbed gas in the north of Qinshui Basin[J]. Petroleum Geology&Experiment,2006,28(5):440-444.
[7]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):43-45.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):43-45.
[8]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[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.
[9]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.WANG Yin,ZHU Wenwei,XU Jing,et al.Discussion on coal structure identification by logging curves[J]. Coal Geology of China,1999,11(3):64-69.
[10]汤友谊,孙四清,郭纯,等.不同煤体结构类型煤分层视电阻率值的测试[J].煤炭科学技术,2005,33(3):70-73.TANG Youyi,SUN Siqing,GUO Chun,et al. Measurement of apparent resisitivity value for coal slices of different seam structures[J].Coal Science and Technology,2005,33(3):70-73.
[11]孟召平,刘姗姗,王保玉,等.晋城矿区煤体结构及其测井响应特征研究[J].煤炭科学技术,2015,43(2):58-63.MENG Zhaoping,LIU Shanshan,WANG Baoyu,et al. Study on feature of coal body struction and logging response in Jincheng Mining Area[J]. Coal Science and Technology,2015,43(2):58-63.
[12]陈信平,霍全明,林建东,等.煤层气储层含气量与其弹性参数之间的关系[J].地球物理学报,2013,56(8):2838-2848.CHEN Xinping,HUO Quanming,LIN Jiandong,et al. The Relation between CBM content and the elastic parameters of CBM reservoirs[J]. Chinese Journal of Geophysice,2013,56(8):2838-2848.
[13]刘之的,杨秀春,陈彩红,等.鄂东气田煤层气储层测井综合评价方法研究[J].测井技术,2013,37(3):289-293.LIU Zhidi,YANG Xiuchun,CHEN Caihong,et al. Comprehensive log evaluation for coalbed methane reservoir in eastern block of Ordos Basin[J],Well Logging Technology,2013,37(3):289-293.
[14]王安民,曹代勇,魏迎春.煤层气选区评价方法探讨[J].煤炭学报,2017,42(4):950-958.WANG Anze,CAO Daiyong,WEI Yingchun. Discussion on methods for selected areas evaluation of coalbed methane:A case study of southern Junggar Basin[J]. Journal of China Coal Society,2017,42(4):950-958.
[15]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 Tcchnology,2011,35(5):441-446.
[16]傅雪海,秦勇,李贵中,等.沁水盆地中-南部煤储层渗透率主控因素分析[J].煤田地质与勘探,2001,29(3):16-19.FU Xuehai,QIN Yong,LI Guizhong,et al. An analysis on the principal control factor of coal reservoir permeability in Center and Southern Qinshui Basin[J]. Coal Geology and Exploration,2001,29(3):16-19.
[17]连承波,李汉林.地应力对煤储层渗透率影响的机理研究[J].煤田地质与勘探,2005,33(2):30-32.LIAN Chengbo,LI Hanlin.Mechanism research about effect of insitu stress on coalbed permeability[J].Coal Geology and Exploration,2005,33(2):30-32.
[18]连承波,钟建华,赵永军,等.基于试井资料分析的煤储层渗透率定量预测模型[J].辽宁工程技术大学学报:自然科学版,2008,27(4):481-484.LIAN Chengbo,ZHONG Jianhua,ZHAO Yongjun,et al.Prediction of coal reservoir permeability based on analysis of well test data[J]. Journal of Liaoning Technical University:National Science,2008,27(4):481-484.
[19]孟召平,蓝强,刘翠丽,等.鄂尔多斯盆地东南缘地应力、储层压力及其耦合关系[J].煤炭学报,2013,38(1):122-128.MENG Zhaoping,LAN Qiang,LIU Cuili,et al. In-situ and coal reservoir pressure in Southeast margin of Ordos basin and their coupling relation[J]. Journal of China Coal Society,2013,38(1):122-128.
[20]王哲,徐礼贵,付晶,等.鄂尔多斯盆地东缘BD区块煤层气富集沉积控制作用及有利区预测[J].天然气地球科学,2016,27(2):387-396.WANG Zhe,XU Ligui,FU Jing,et al.Sedimentary control of coalbed methane accumulation and prediction of favorable area in the Area BD,eastern margin of Ordos Basin[J]. Natural Gas Geoscience,2016,27(2):387-396.
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