四川盆地丁山区块页岩气储层关键参数测井评价方法
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摘要
四川盆地丁山区块是一个页岩气千亿方级增储阵地,但与其他页岩气区块相比,丁山区块储层的测井曲线响应与储层参数相关性较低,且由于地层压力变化较大,易造成井眼崩落,其他区块适用的以密度曲线为主导的参数评价系统在该区块受到了挑战。对丁山区块重点井测井响应特征与岩心实验数据的关系开展了研究,寻求其相关性,结合经验统计法以及视骨架密度法对储层参数加以评价,建立了有机碳含量、孔隙度、矿物含量以及含水饱和度评价模型。结果表明,能谱铀含量曲线与储层参数相关性强,且并不受到井眼崩落的影响,经与岩心实验参数对比可知,以能谱铀含量曲线为主导建立的模型计算出来的参数结果相对误差控制在8%以内,精度较高,明显优于以密度曲线为主导的模型,满足储层评价的需要,符合储量计算的要求,也为丁山区块页岩气储层的勘探开发提供了支撑。
Dingshan block is another shale gas source of 100 billion square meters. However,compared with other shale gas blocks,the logging response of the reservoir in Dingshan block is less correlated with the reservoir parameters,and because the formation pressure changes greatly,it is easy to cause the wellbore to collapse,resulting in that the parameter evaluation system dominated by density curve applied in other bolcks is challenged in this block. This paper analyzed the relationship between log response characteristics and core experimental data of key wells in Dingshan block to determine their correlation,and established evaluation models of organic carbon content,porosity,minerals content and water saturation by combining the empirical statistics and apparent skeletal density method. Compared with core experimental parameters,the relative error of the parameters calculated by the model based on uranium content curve is less than 8%,with high precision. So the model is significantly better than the model dominated by density curve,it can meet the needs of actual reservoir evaluation and the calculation requirements of reserves,and also provide corresponding support for the exploration and development of shale gas reservoir in Dingshan block.
Dingshan block is another shale gas source of 100 billion square meters. However,compared with other shale gas blocks,the logging response of the reservoir in Dingshan block is less correlated with the reservoir parameters,and because the formation pressure changes greatly,it is easy to cause the wellbore to collapse,resulting in that the parameter evaluation system dominated by density curve applied in other bolcks is challenged in this block. This paper analyzed the relationship between log response characteristics and core experimental data of key wells in Dingshan block to determine their correlation,and established evaluation models of organic carbon content,porosity,minerals content and water saturation by combining the empirical statistics and apparent skeletal density method. Compared with core experimental parameters,the relative error of the parameters calculated by the model based on uranium content curve is less than 8%,with high precision. So the model is significantly better than the model dominated by density curve,it can meet the needs of actual reservoir evaluation and the calculation requirements of reserves,and also provide corresponding support for the exploration and development of shale gas reservoir in Dingshan block.
引文
[1]郭旭升.南方海相页岩气“二元富集”规律:四川盆地及周缘龙马溪组页岩气勘探实践认识.地质学报,2014,88(7):1209-1218.GUO X S.Rules of two-factor enrichment for marine shale gas in southern china:Understanding from the long maxi formation shale gas in Sichuan Basin and its surrounding area.Acta Geologica Sinica,2014,88(7):1209-1218.
[2]郭彤楼,张汉荣.四川盆地焦石坝页岩气田形成与富集高产模式.石油勘探与开发,2014,41(1):28-36.GUO T L,ZHANG H R.Formation and enrichment mode of Jiaoshiba shale gas field,Sichuan Basin.Petroleum Exploration and Development,2014,41(1):28-36.
[3]郭旭升,郭彤楼,魏志红,等.中国南方页岩气勘探评价的几点思考.中国工程科学,2012,14(6):101-105.GUO X S,GUO T L,WEI Z H,et al.Thoughts on shale gas exploration in southern China.Engineering Science,2012,14(6):101-105.
[4]王志刚.涪陵页岩气勘探开发重大突破与启示.石油与天然气地质,2015,36(1):1-6.WANG Z G.Breakthrough of Fuling shale gas exploration and development and its inspiration.Oil&Gas Geology,2015,36(1):1-6.
[5]胡东风,张汉荣,倪楷,等.四川盆地东南缘海相页岩气保存条件及其主控因素.天然气工业,2014,34(6):17-23.HU D F,ZHANG H R,NI K,et al.Main controlling factors for gas preservation conditions of marine shales in southeastern margins of the Sichuan Basin.Natural Gas Industry,2014,34(6):17-23.
[6]郭旭升.涪陵页岩气田焦石坝区块富集机理与勘探技术.北京:科学出版社,2014:28-36.GUO X S.Enrichment mechanism and exploration technology of Jiaoshiba area in Fining shale gas field.Beijing:Science Press,2014:28-36.
[7]沈瑞,胡志明,郭和坤,等.四川盆地长宁龙马溪组页岩赋存空间及含气规律.岩性油气藏,2018,30(5):11-17.SHEN R,HU Z M,GUO H K,et al.Storage space and gas content law of Longmaxi shale in Changning area,Sichuan Basin.Lithologic Reservoirs,2018,30(5):11-17.
[8]魏祥峰,赵正宝,王庆波,等.川东南綦江丁山地区上奥陶统五峰组-下志留统龙马溪组页岩气地质条件综合评价.地质评论,2017,63(1):153-164.WEI X F,ZHAO Z B,WANG Q B,et al.Comprehensive evaluation on geological conditions of the shale gas in Upper Ordovician Wufeng Formation-Lower Silurian Longmaxi Formation in Dingshan area,Qijiang,southeastern Sichuan.Geological Review,2017,63(1):153-164.
[9]曹涛涛,邓模,刘虎,等.可溶有机质对泥页岩储集物性的影响.岩性油气藏,2018,30(3):43-51.CAO T T,DENG M,LIU H,et al.Influences of soluble organic matter on reservoir properties of shale.Lithologic Reservoirs,2018,30(3):43-51.
[10]车世琦.测井资料用于页岩岩相划分及识别:以涪陵气田五峰组-龙马溪组为例.岩性油气藏,2018,30(1):121-132.CHE S Q.Shale lithofacies identification and classification by using logging data:a case of Wufeng-Longmaxi Formation in Fuling Gas Field,Sichuan Basin.Lithologic Reservoirs,2018,30(1):121-132.
[11]PAEESY Q R,CREANEY S.A practical model for organic richness from porosity and resistivity logs.AAPG Bulletin,1990,74(12):1777-1794.
[12]王建国,李忠刚,朱智,等.基于测井方法的页岩有机碳含量计算.大庆石油地质与开发,2015,34(3):170-174.WANG J G,LI Z G,ZHU Z,et al.Calculation of the shale TOC extents based on the well logging methods.Petroleum Geology&Oilfield Development in Daqing,2015,34(3):170-174.
[13]宋磊,宁正福,丁冠阳.基于三种常规测井方法的有机碳含量评价.科学技术与工程,2017,17(29):260-265.SONG L,NING Z F,DING G Y.Evaluation of organic carbon content based on three kinds of conventional logging method.Science Technology and Engineering,2017,17(29):260-265.
[14]胡曦,王兴志,李宜真,等.利用测井信息计算页岩有机质丰度:以川南长宁地区龙马溪组为例.岩性油气藏,2016,28(5):107-112.HU X,WANG X Z,LI Y Z,et al.Using log data to calculate the organic matter abundance in shale:a case study from Longmaxi Formation in Changning area,southern Sichuan Basin.Lithologic Reservoirs,2016,28(5):107-112.
[15]熊镭,张超谟,张冲,等.A地区页岩气储层总有机碳含量测井评价方法研究.岩性油气藏,2014,26(3):74-78.XIONG L,ZHANG C M,ZHANG C,et al.Research on logging evaluation method of TOC content of shale gas reservoir in A area.Lithologic Reservoirs,2014,26(3):74-78.
[16]钟光海,谢冰,周肖.页岩气测井评价方法研究:以四川盆地蜀南地区为例.岩性油气藏,2015,27(4):96-102.ZHONG G H,XIE B,ZHOU X.Well logging evaluation methods of shale gas reservoir:a case study from Shu nan area,Sichuan Basin.Lithologic Reservoirs,2015,27(4):96-102.
[17]ZHU L Q,ZHANG C,GUO C,et al.Calculating the total porosity of shale reservoirs by combining conventional logging and elemental logging to eliminate the effects of gas saturation.Petrophysics,2018,59(2):162-184.
[18]徐壮,石万忠,翟刚毅,等.涪陵地区页岩总孔隙度测井预测.石油学报,2017,38(5):533-543.XU Z,SHI W Z,ZHAI G Y,et al.Well logging prediction for porosity of shale in Fuling area.Acta Petrolei Sinica,2017,38(5):533-543.
[19]黄小平,柴婧.阿尔奇公式在泥页岩地层含油饱和度计算中的应用:以沾化凹陷沙三段下亚段为例.油气地质与采收率,2014,21(4):58-61.HUANG X P,CHAI J.A practical discussion on oil saturation calculation using Archie formula in shale formation:Example from lower Sha 3 member of Zhanhua Sag.Petroleum Geology and Recovery Efficiency,2014,21(4):58-61.
[20]刘帅,冯明刚,严伟.非电法测井计算页岩储层含水饱和度方法研究:以涪陵页岩气田焦石坝区块为例.科学技术与工程,2017,17(27):127-132.LIU S,FENG M G,YAN W.The non-electrical logging calculation shale reservoir water saturation method research:a case on Jiaoshiba area of Fuling shale gas field.Science Technology and Engineering,2017,17(27):127-132.
[21]张晋言,李淑荣,王利滨,等.页岩气测井电性解析及含气性评价:以四川盆地涪陵地区龙马溪组一段-五峰组为例.天然气勘探与开发,2018,41(3):33-41.ZHANG J Y,LI S R,WANG L B,et al.Electrical-logging analysis and evaluation on gas-bearing property of shale gas:an example from Longmaxi 1 Member-Wufeng Formation,Fuling area,Sichuan Basin.Natural Gas Exploration and Development,2018,41(3):33-41.
[22]付杰.两种页岩气含气饱和度计算的方法.科技经济导刊,2016,2(32):56-57.FU J.Method for calculating gas saturation of two shale gas.Science and Technology Economic Guide,2016,2(32):56-57.
[23]田云英,夏宏泉.基于多矿物模型分析的最优化测井解释.西南石油学院学报,2006,28(4):8-11.TIAN Y Y,XIA H Q.The optimal logging explanation base on multi-minerals model analysis.Journal of Southwest Petroleum Institute,2006,28(4):8-11.
[24]龚小平,唐洪明,赵峰,等.四川盆地龙马溪组页岩储层孔隙结构的定量表征.岩性油气藏,2016,28(3):48-56.GONG X P,TANG H M,ZHAO F,et al.Quantitative characterization of pore structure in shale reservoir of Longmaxi Formation in Sichuan Basin.Lithologic Reservoirs,2016,28(3):48-56.
[25]李可,王兴志,张馨艺,等.四川盆地东部下志留统龙马溪组页岩储层特征及影响因素.岩性油气藏,2016,28(5):52-58.LI K,WANG X Z,ZHANG X Y,et al.Shale reservoir characteristics and influencing factors of the Lower Silurian Longmaxi Formation in the eastern Sichuan Basin.Lithologic Reservoirs,2016,28(5):52-58.
[26]张晋言,李淑荣,王利滨,等.低阻页岩气层含气饱和度计算新方法.天然气工业,2017,37(4):34-41.ZHANG J Y,LI S R,WANG L B,et al.A new method for calculating gas saturation of low-resistivity shale gas reservoirs.Natural Gas Industry,2017,37(4):34-41.
[27]魏志红,魏祥峰.页岩不同类型孔隙的含气性差异:以四川盆地焦石坝地区五峰组-龙马溪组为例.天然气工业,2014,34(6):37-41.WEI Z H,WEI X F.Comparison of gas-bearing property between different pore types of shale:a case from the Upper Ordovician Wufeng and Longmaxi Fms in the Jiaoshiba area,Sichuan Basin.Natural Gas Industry,2014,34(6):37-41.
[28]胡博文,李斌,鲁东升,等.页岩气储层特征及含气性主控因素:以湘西北保靖地区龙马溪组为例.岩性油气藏,2017,29(3):83-91.HU B W,LI B,LU D S,et al.Characteristics and main controlling factors of shale gas reservoirs:a case from Longmaxi Formation in Baojing area,NW Hunan province.Lithologic Reservoirs,2017,29(3):83-91.
[29]朱汉卿,贾爱林,位云生,等.基于氩气吸附的页岩纳米级孔隙结构特征.岩性油气藏,2018,30(2):77-84.ZHU H Q,JIA A L,WEI Y S,et al.Nano pore structure characteristics of shale based on Ar adsorption.Lithologic Reservoirs,2018,30(2):77-84.
[30]余川,周洵,方光建,等.地层温压条件下页岩吸附性能变化特征:以渝东北地区龙马溪组为例.岩性油气藏,2018,30(6):10-17.YU C,ZHOU X,FANG G J,et al.Absorptivity of shale under the formation temperature and pressure:a case of Longmaxi Formation in northeastern Chongqing.Lithologic Reservoirs,2018,30(6):10-17.
[31]陈居凯,朱炎铭,崔兆帮,等.川南龙马溪组页岩孔隙结构综合表征及其分形特征.岩性油气藏,2018,30(1):55-62.CHEN J K,ZHU Y M,CUI Z B,et al.Pore structure and fractal characteristics of Longmaxi shale in southern Sichuan Basin.Lithologic Reservoirs,2018,30(1):55-62.
[2]郭彤楼,张汉荣.四川盆地焦石坝页岩气田形成与富集高产模式.石油勘探与开发,2014,41(1):28-36.GUO T L,ZHANG H R.Formation and enrichment mode of Jiaoshiba shale gas field,Sichuan Basin.Petroleum Exploration and Development,2014,41(1):28-36.
[3]郭旭升,郭彤楼,魏志红,等.中国南方页岩气勘探评价的几点思考.中国工程科学,2012,14(6):101-105.GUO X S,GUO T L,WEI Z H,et al.Thoughts on shale gas exploration in southern China.Engineering Science,2012,14(6):101-105.
[4]王志刚.涪陵页岩气勘探开发重大突破与启示.石油与天然气地质,2015,36(1):1-6.WANG Z G.Breakthrough of Fuling shale gas exploration and development and its inspiration.Oil&Gas Geology,2015,36(1):1-6.
[5]胡东风,张汉荣,倪楷,等.四川盆地东南缘海相页岩气保存条件及其主控因素.天然气工业,2014,34(6):17-23.HU D F,ZHANG H R,NI K,et al.Main controlling factors for gas preservation conditions of marine shales in southeastern margins of the Sichuan Basin.Natural Gas Industry,2014,34(6):17-23.
[6]郭旭升.涪陵页岩气田焦石坝区块富集机理与勘探技术.北京:科学出版社,2014:28-36.GUO X S.Enrichment mechanism and exploration technology of Jiaoshiba area in Fining shale gas field.Beijing:Science Press,2014:28-36.
[7]沈瑞,胡志明,郭和坤,等.四川盆地长宁龙马溪组页岩赋存空间及含气规律.岩性油气藏,2018,30(5):11-17.SHEN R,HU Z M,GUO H K,et al.Storage space and gas content law of Longmaxi shale in Changning area,Sichuan Basin.Lithologic Reservoirs,2018,30(5):11-17.
[8]魏祥峰,赵正宝,王庆波,等.川东南綦江丁山地区上奥陶统五峰组-下志留统龙马溪组页岩气地质条件综合评价.地质评论,2017,63(1):153-164.WEI X F,ZHAO Z B,WANG Q B,et al.Comprehensive evaluation on geological conditions of the shale gas in Upper Ordovician Wufeng Formation-Lower Silurian Longmaxi Formation in Dingshan area,Qijiang,southeastern Sichuan.Geological Review,2017,63(1):153-164.
[9]曹涛涛,邓模,刘虎,等.可溶有机质对泥页岩储集物性的影响.岩性油气藏,2018,30(3):43-51.CAO T T,DENG M,LIU H,et al.Influences of soluble organic matter on reservoir properties of shale.Lithologic Reservoirs,2018,30(3):43-51.
[10]车世琦.测井资料用于页岩岩相划分及识别:以涪陵气田五峰组-龙马溪组为例.岩性油气藏,2018,30(1):121-132.CHE S Q.Shale lithofacies identification and classification by using logging data:a case of Wufeng-Longmaxi Formation in Fuling Gas Field,Sichuan Basin.Lithologic Reservoirs,2018,30(1):121-132.
[11]PAEESY Q R,CREANEY S.A practical model for organic richness from porosity and resistivity logs.AAPG Bulletin,1990,74(12):1777-1794.
[12]王建国,李忠刚,朱智,等.基于测井方法的页岩有机碳含量计算.大庆石油地质与开发,2015,34(3):170-174.WANG J G,LI Z G,ZHU Z,et al.Calculation of the shale TOC extents based on the well logging methods.Petroleum Geology&Oilfield Development in Daqing,2015,34(3):170-174.
[13]宋磊,宁正福,丁冠阳.基于三种常规测井方法的有机碳含量评价.科学技术与工程,2017,17(29):260-265.SONG L,NING Z F,DING G Y.Evaluation of organic carbon content based on three kinds of conventional logging method.Science Technology and Engineering,2017,17(29):260-265.
[14]胡曦,王兴志,李宜真,等.利用测井信息计算页岩有机质丰度:以川南长宁地区龙马溪组为例.岩性油气藏,2016,28(5):107-112.HU X,WANG X Z,LI Y Z,et al.Using log data to calculate the organic matter abundance in shale:a case study from Longmaxi Formation in Changning area,southern Sichuan Basin.Lithologic Reservoirs,2016,28(5):107-112.
[15]熊镭,张超谟,张冲,等.A地区页岩气储层总有机碳含量测井评价方法研究.岩性油气藏,2014,26(3):74-78.XIONG L,ZHANG C M,ZHANG C,et al.Research on logging evaluation method of TOC content of shale gas reservoir in A area.Lithologic Reservoirs,2014,26(3):74-78.
[16]钟光海,谢冰,周肖.页岩气测井评价方法研究:以四川盆地蜀南地区为例.岩性油气藏,2015,27(4):96-102.ZHONG G H,XIE B,ZHOU X.Well logging evaluation methods of shale gas reservoir:a case study from Shu nan area,Sichuan Basin.Lithologic Reservoirs,2015,27(4):96-102.
[17]ZHU L Q,ZHANG C,GUO C,et al.Calculating the total porosity of shale reservoirs by combining conventional logging and elemental logging to eliminate the effects of gas saturation.Petrophysics,2018,59(2):162-184.
[18]徐壮,石万忠,翟刚毅,等.涪陵地区页岩总孔隙度测井预测.石油学报,2017,38(5):533-543.XU Z,SHI W Z,ZHAI G Y,et al.Well logging prediction for porosity of shale in Fuling area.Acta Petrolei Sinica,2017,38(5):533-543.
[19]黄小平,柴婧.阿尔奇公式在泥页岩地层含油饱和度计算中的应用:以沾化凹陷沙三段下亚段为例.油气地质与采收率,2014,21(4):58-61.HUANG X P,CHAI J.A practical discussion on oil saturation calculation using Archie formula in shale formation:Example from lower Sha 3 member of Zhanhua Sag.Petroleum Geology and Recovery Efficiency,2014,21(4):58-61.
[20]刘帅,冯明刚,严伟.非电法测井计算页岩储层含水饱和度方法研究:以涪陵页岩气田焦石坝区块为例.科学技术与工程,2017,17(27):127-132.LIU S,FENG M G,YAN W.The non-electrical logging calculation shale reservoir water saturation method research:a case on Jiaoshiba area of Fuling shale gas field.Science Technology and Engineering,2017,17(27):127-132.
[21]张晋言,李淑荣,王利滨,等.页岩气测井电性解析及含气性评价:以四川盆地涪陵地区龙马溪组一段-五峰组为例.天然气勘探与开发,2018,41(3):33-41.ZHANG J Y,LI S R,WANG L B,et al.Electrical-logging analysis and evaluation on gas-bearing property of shale gas:an example from Longmaxi 1 Member-Wufeng Formation,Fuling area,Sichuan Basin.Natural Gas Exploration and Development,2018,41(3):33-41.
[22]付杰.两种页岩气含气饱和度计算的方法.科技经济导刊,2016,2(32):56-57.FU J.Method for calculating gas saturation of two shale gas.Science and Technology Economic Guide,2016,2(32):56-57.
[23]田云英,夏宏泉.基于多矿物模型分析的最优化测井解释.西南石油学院学报,2006,28(4):8-11.TIAN Y Y,XIA H Q.The optimal logging explanation base on multi-minerals model analysis.Journal of Southwest Petroleum Institute,2006,28(4):8-11.
[24]龚小平,唐洪明,赵峰,等.四川盆地龙马溪组页岩储层孔隙结构的定量表征.岩性油气藏,2016,28(3):48-56.GONG X P,TANG H M,ZHAO F,et al.Quantitative characterization of pore structure in shale reservoir of Longmaxi Formation in Sichuan Basin.Lithologic Reservoirs,2016,28(3):48-56.
[25]李可,王兴志,张馨艺,等.四川盆地东部下志留统龙马溪组页岩储层特征及影响因素.岩性油气藏,2016,28(5):52-58.LI K,WANG X Z,ZHANG X Y,et al.Shale reservoir characteristics and influencing factors of the Lower Silurian Longmaxi Formation in the eastern Sichuan Basin.Lithologic Reservoirs,2016,28(5):52-58.
[26]张晋言,李淑荣,王利滨,等.低阻页岩气层含气饱和度计算新方法.天然气工业,2017,37(4):34-41.ZHANG J Y,LI S R,WANG L B,et al.A new method for calculating gas saturation of low-resistivity shale gas reservoirs.Natural Gas Industry,2017,37(4):34-41.
[27]魏志红,魏祥峰.页岩不同类型孔隙的含气性差异:以四川盆地焦石坝地区五峰组-龙马溪组为例.天然气工业,2014,34(6):37-41.WEI Z H,WEI X F.Comparison of gas-bearing property between different pore types of shale:a case from the Upper Ordovician Wufeng and Longmaxi Fms in the Jiaoshiba area,Sichuan Basin.Natural Gas Industry,2014,34(6):37-41.
[28]胡博文,李斌,鲁东升,等.页岩气储层特征及含气性主控因素:以湘西北保靖地区龙马溪组为例.岩性油气藏,2017,29(3):83-91.HU B W,LI B,LU D S,et al.Characteristics and main controlling factors of shale gas reservoirs:a case from Longmaxi Formation in Baojing area,NW Hunan province.Lithologic Reservoirs,2017,29(3):83-91.
[29]朱汉卿,贾爱林,位云生,等.基于氩气吸附的页岩纳米级孔隙结构特征.岩性油气藏,2018,30(2):77-84.ZHU H Q,JIA A L,WEI Y S,et al.Nano pore structure characteristics of shale based on Ar adsorption.Lithologic Reservoirs,2018,30(2):77-84.
[30]余川,周洵,方光建,等.地层温压条件下页岩吸附性能变化特征:以渝东北地区龙马溪组为例.岩性油气藏,2018,30(6):10-17.YU C,ZHOU X,FANG G J,et al.Absorptivity of shale under the formation temperature and pressure:a case of Longmaxi Formation in northeastern Chongqing.Lithologic Reservoirs,2018,30(6):10-17.
[31]陈居凯,朱炎铭,崔兆帮,等.川南龙马溪组页岩孔隙结构综合表征及其分形特征.岩性油气藏,2018,30(1):55-62.CHEN J K,ZHU Y M,CUI Z B,et al.Pore structure and fractal characteristics of Longmaxi shale in southern Sichuan Basin.Lithologic Reservoirs,2018,30(1):55-62.