鄂尔多斯盆地南部长7暗色泥岩与黑色页岩生烃动力学特征对比分析
|
摘要
以往对鄂尔多斯盆地南部地区长7油层组(简称长7)中烃源岩生烃潜力的研究主要是采用静态地球化学指标进行的,目前尚无对生烃动态特征的系统评价,因而制约了对长7烃源岩生烃潜力和页岩油资源分布有利岩性的客观认识。为此,选取长7不同类型的烃源岩样品,通过开放和封闭热模拟实验,对比分析了不同类型烃源岩的动力学参数、生烃产物、产率特征及生烃演化规律。结果表明:(1)黑色页岩活化能分布范围比暗色泥岩更为集中,且主频活化能和频率因子均低于暗色泥岩,体现了快速生烃的特性;(2)在外推到地质条件下,黑色页岩主要生烃期对应的Ro值(0. 70%～0. 87%)低于暗色泥岩(1. 06%～1. 72%),且以生油为主;(3) Ro在0. 9%～1. 3%范围内,黑色页岩的总烃产率高于暗色泥岩,生油量高于暗色泥岩。结合研究区两类烃源岩的地球化学资料综合分析表明,黑色页岩是研究区页岩油资源形成与分布的有利烃源岩。
Previous studies on the hydrocarbon generation potential of Chang 7 hydrocarbon source rocks in the southern Ordos Basin were mainly focused on analyzing static geochemical parameters. No systematic evaluation of hydrocarbon generation potential has ever been carried out,which limited our understanding of the potential of Chang 7 hydrocarbon source rocks and the shale oil resource distribution. For this reason,rock samples were collected from two types of Chang 7 source rocks for thermal simulation experiments,and comparative analysis was performed on the hydrocarbon generation products,yield characteristics and hydrocarbon generation kinetics. We suggest that:( 1) Distribution of activation energy of black shale is more concentrated than that of dark shale,and the peak frequency of activation energy and frequency factor of black shale are lower than those of the dark shale. This indicates that the black shale has the characteristics of short-term rapid hydrocarbon generation.( 2) Under geological conditions,Rovalues of the black shale during the main hydrocarbon generation period( 0. 70% ～ 0. 87%) are lower than those of the dark shale( 1. 06% ～ 1. 72%).( 3) In a closed system,Rois in the range of 0. 9% ～ 1. 3%. The total hydrocarbon production rate and the amount of oil produced are both higher in the black shale than in the dark shale. Comprehensive analysis of geochemical data of the dark and black shales suggest that the former is more favorable source rock for shale oil resources in the study area.
Previous studies on the hydrocarbon generation potential of Chang 7 hydrocarbon source rocks in the southern Ordos Basin were mainly focused on analyzing static geochemical parameters. No systematic evaluation of hydrocarbon generation potential has ever been carried out,which limited our understanding of the potential of Chang 7 hydrocarbon source rocks and the shale oil resource distribution. For this reason,rock samples were collected from two types of Chang 7 source rocks for thermal simulation experiments,and comparative analysis was performed on the hydrocarbon generation products,yield characteristics and hydrocarbon generation kinetics. We suggest that:( 1) Distribution of activation energy of black shale is more concentrated than that of dark shale,and the peak frequency of activation energy and frequency factor of black shale are lower than those of the dark shale. This indicates that the black shale has the characteristics of short-term rapid hydrocarbon generation.( 2) Under geological conditions,Rovalues of the black shale during the main hydrocarbon generation period( 0. 70% ～ 0. 87%) are lower than those of the dark shale( 1. 06% ～ 1. 72%).( 3) In a closed system,Rois in the range of 0. 9% ～ 1. 3%. The total hydrocarbon production rate and the amount of oil produced are both higher in the black shale than in the dark shale. Comprehensive analysis of geochemical data of the dark and black shales suggest that the former is more favorable source rock for shale oil resources in the study area.
引文
[1] BRAU R L,BURHNAM A K. Analysis of chemical reaction kinetics using a distribution of activation energy and simpler models[J]. Energy and Fuels,1987,1(2):153-161.
[2] TANG Y,JENDEN P D,NIGRINI A,et al. Modeling early methane generation in coal[J]. Energy and Fuels,1996,10(3):659-671.
[3] BOREHAM C J,HORSFEILD B,SCHENK H J. Predicting the quantities of oil and gas generated from Australian Permian coal,Bowen basin using pyrolytic methods[J]. Marine and Petroleum Geology,1999,16(2):165-188.
[4]解启来,周中毅.利用干酪根热解动力学模拟实验研究塔里木盆地下古生界古地温[J].地球科学——中国地质大学学报,2002,27(6):767-769.
[5]熊永强,耿安松,刘金钟,等.生烃动力学模拟实验结合GC-IRMS测定在有效气源岩判识中的应用[J].地球化学,2002,31(1):22-25.
[6]汤庆艳,张铭杰,张同伟,等.生烃热模拟实验方法述评[J].西南石油大学学报(自然科学版),2013,35(1):52–62.
[7]饶松,胡圣标,汪集旸.有机质生烃动力学参数研究进展:回顾和展望[J].地球物理学进展,2010,25(4):1424-1432.
[8]刘立峰,姜振学,钟宁宁,等.辽河西部凹陷古近系烃源岩生烃动力学特征[J].地球科学——中国地质大学学报,2009,34(5):799-805.
[9]蒋启贵,王延斌,秦建中,等.中国南方海相烃源岩生烃动力学研究[J].石油实验地质,2005,30(6):74-78.
[10] LEHNE E,DIECKMANN V. Bulk kinetic parameters and structural moieties of asphaltenes and kerogens from a Sulphur-rich source rock sequence and related petroleums[J]. Organic Geochemistry,2007,38(10):1657-1679.
[11]付少英.鄂尔多斯盆地上古生界煤的生烃动力学及其分子特征研究[D].广州:中国科学院研究生院(广州地球化学研究所),2002.
[12]卢进才,李玉宏,魏仙样,等.鄂尔多斯盆地三叠系延长组长7油层组油页岩沉积环境与资源潜力研究[J].吉林大学学报(地球科学版),2006,36(6):928-932.
[13]张文正,杨华,杨奕华,等.鄂尔多斯盆地长7优质烃源岩的岩石学、元素地球化学特征及发育环境[J].地球化学,2008,37(1):59-64.
[14]张文正,杨华,候林慧,等.鄂尔多斯盆地延长组不同烃源岩17α(H)-重排藿烷的分布及其地质意义[J].中国科学(D辑:地球科学),2009,39(10):1438-1445.
[15]杨华,张文正.论鄂尔多斯盆地长7段优质油源岩在低渗透油气成藏富集中的主导作用:地质地球化学特征[J].地球化学,2005,34(2):147-154.
[16]张妮妮,刘洛夫,苏天喜,等.鄂尔多斯盆地延长组长7段与威利斯顿盆地Bakken组致密油形成条件的对比及其意义[J].现代地质,2013,27(5):1120-1130.
[17]张云霞,陈纯芳,宋艳波,等.鄂尔多斯盆地南部中生界烃源岩特征及油源对比[J].石油实验地质,2012,34(2):173-177.
[18]王保战.鄂尔多斯盆地南部延长组长7段生烃潜力研究[J].石油地质与工程,2015,29(4):27-30+154.
[19]邓南涛,张枝焕,鲍志东,等.鄂尔多斯盆地南部延长组有效烃源岩地球化学特征及其识别标志[J].中国石油大学学报(自然科学版),2013,37(2):135-145.
[20]方艳梅,奥洋洋,王辉.鄂尔多斯盆地南部延长组烃源岩有机质丰度评价[J].辽宁化工,2015,44(8):1005-1007.
[21]邓南涛,张枝焕,任来义,等.鄂尔多斯盆地南部延长组烃源岩生物标志物特征及生烃潜力分析[J].矿物岩石地球化学通报,2014,33(3):317-325.
[22]郭凯.鄂尔多斯盆地陇东地区长7段有效烃源岩及生排烃研究[J].石油实验地质,2017,39(1):15-23.
[23]黄彩霞,张枝焕,李宇翔,等.鄂尔多斯盆地南部地区延长组烃源岩生烃动力学研究及模拟结果分析[J].石油天然气学报,2013,35(8):21-27.
[24]廖玲玲.基于全岩的不同类型烃源岩生—留—排烃的实验模拟与应用研究[D].广州.中国科学院研究生院(广州地球化学研究所),2016.
[25]王香增,高潮.鄂尔多斯盆地南部长7陆相泥页岩生烃过程研究[J].非常规油气,2014,1(1):2-11.
[26]钱门辉,蒋启贵,李志,等.开放体系下页岩生烃组分动力学研究:以渤南洼陷为例[J].地球化学,2017,46(2):149-157.
[27] TISSOT B P,PELET R,UNGERER P. Thermal history of sedimentary basins,maturation indices,and kinetics of oil and gas generation[J]. AAPG Bulletin, 1987, 71(12):1445-1466.
[28]黄第藩,李晋超,周翥红,等.陆相有机质的演化与成烃机理[M].北京:石油工业出版社,1984:171-179.
[29]傅家谟,史继扬.石油演化理论与实践(Ⅰ)——石油演化的机理与石油演化的阶段[J].地球化学,1975,4(2):87-110.
[30]傅家漠,秦匡宗.干酪根地球化学[M].广州:广东科技出版社,1995:375-376.
[31]张辉,彭平安.开放体系下干酪根生烃动力学研究[J].西南石油大学学报(自然科学版),2008,30(6):18-21+202-203.
[32] SWEENEY J J,BURNHAM A K. Evaluation of a simple model of vitrinite reflectance based on Chemical kinetics[J]. AAPG Bulletin,1990,74(10):1559-1570.
[33]秦艳,彭平安,于赤灵,等.硫在干酪根裂解生烃中的作用[J].科学通报,2004(增刊):9-16.
[34]马中豪,陈清石,史忠汪,等.鄂尔多斯盆地南缘延长组长7油页岩地球化学特征及其地质意义[J].地质通报,2016,35(9):1550-1558.
[2] TANG Y,JENDEN P D,NIGRINI A,et al. Modeling early methane generation in coal[J]. Energy and Fuels,1996,10(3):659-671.
[3] BOREHAM C J,HORSFEILD B,SCHENK H J. Predicting the quantities of oil and gas generated from Australian Permian coal,Bowen basin using pyrolytic methods[J]. Marine and Petroleum Geology,1999,16(2):165-188.
[4]解启来,周中毅.利用干酪根热解动力学模拟实验研究塔里木盆地下古生界古地温[J].地球科学——中国地质大学学报,2002,27(6):767-769.
[5]熊永强,耿安松,刘金钟,等.生烃动力学模拟实验结合GC-IRMS测定在有效气源岩判识中的应用[J].地球化学,2002,31(1):22-25.
[6]汤庆艳,张铭杰,张同伟,等.生烃热模拟实验方法述评[J].西南石油大学学报(自然科学版),2013,35(1):52–62.
[7]饶松,胡圣标,汪集旸.有机质生烃动力学参数研究进展:回顾和展望[J].地球物理学进展,2010,25(4):1424-1432.
[8]刘立峰,姜振学,钟宁宁,等.辽河西部凹陷古近系烃源岩生烃动力学特征[J].地球科学——中国地质大学学报,2009,34(5):799-805.
[9]蒋启贵,王延斌,秦建中,等.中国南方海相烃源岩生烃动力学研究[J].石油实验地质,2005,30(6):74-78.
[10] LEHNE E,DIECKMANN V. Bulk kinetic parameters and structural moieties of asphaltenes and kerogens from a Sulphur-rich source rock sequence and related petroleums[J]. Organic Geochemistry,2007,38(10):1657-1679.
[11]付少英.鄂尔多斯盆地上古生界煤的生烃动力学及其分子特征研究[D].广州:中国科学院研究生院(广州地球化学研究所),2002.
[12]卢进才,李玉宏,魏仙样,等.鄂尔多斯盆地三叠系延长组长7油层组油页岩沉积环境与资源潜力研究[J].吉林大学学报(地球科学版),2006,36(6):928-932.
[13]张文正,杨华,杨奕华,等.鄂尔多斯盆地长7优质烃源岩的岩石学、元素地球化学特征及发育环境[J].地球化学,2008,37(1):59-64.
[14]张文正,杨华,候林慧,等.鄂尔多斯盆地延长组不同烃源岩17α(H)-重排藿烷的分布及其地质意义[J].中国科学(D辑:地球科学),2009,39(10):1438-1445.
[15]杨华,张文正.论鄂尔多斯盆地长7段优质油源岩在低渗透油气成藏富集中的主导作用:地质地球化学特征[J].地球化学,2005,34(2):147-154.
[16]张妮妮,刘洛夫,苏天喜,等.鄂尔多斯盆地延长组长7段与威利斯顿盆地Bakken组致密油形成条件的对比及其意义[J].现代地质,2013,27(5):1120-1130.
[17]张云霞,陈纯芳,宋艳波,等.鄂尔多斯盆地南部中生界烃源岩特征及油源对比[J].石油实验地质,2012,34(2):173-177.
[18]王保战.鄂尔多斯盆地南部延长组长7段生烃潜力研究[J].石油地质与工程,2015,29(4):27-30+154.
[19]邓南涛,张枝焕,鲍志东,等.鄂尔多斯盆地南部延长组有效烃源岩地球化学特征及其识别标志[J].中国石油大学学报(自然科学版),2013,37(2):135-145.
[20]方艳梅,奥洋洋,王辉.鄂尔多斯盆地南部延长组烃源岩有机质丰度评价[J].辽宁化工,2015,44(8):1005-1007.
[21]邓南涛,张枝焕,任来义,等.鄂尔多斯盆地南部延长组烃源岩生物标志物特征及生烃潜力分析[J].矿物岩石地球化学通报,2014,33(3):317-325.
[22]郭凯.鄂尔多斯盆地陇东地区长7段有效烃源岩及生排烃研究[J].石油实验地质,2017,39(1):15-23.
[23]黄彩霞,张枝焕,李宇翔,等.鄂尔多斯盆地南部地区延长组烃源岩生烃动力学研究及模拟结果分析[J].石油天然气学报,2013,35(8):21-27.
[24]廖玲玲.基于全岩的不同类型烃源岩生—留—排烃的实验模拟与应用研究[D].广州.中国科学院研究生院(广州地球化学研究所),2016.
[25]王香增,高潮.鄂尔多斯盆地南部长7陆相泥页岩生烃过程研究[J].非常规油气,2014,1(1):2-11.
[26]钱门辉,蒋启贵,李志,等.开放体系下页岩生烃组分动力学研究:以渤南洼陷为例[J].地球化学,2017,46(2):149-157.
[27] TISSOT B P,PELET R,UNGERER P. Thermal history of sedimentary basins,maturation indices,and kinetics of oil and gas generation[J]. AAPG Bulletin, 1987, 71(12):1445-1466.
[28]黄第藩,李晋超,周翥红,等.陆相有机质的演化与成烃机理[M].北京:石油工业出版社,1984:171-179.
[29]傅家谟,史继扬.石油演化理论与实践(Ⅰ)——石油演化的机理与石油演化的阶段[J].地球化学,1975,4(2):87-110.
[30]傅家漠,秦匡宗.干酪根地球化学[M].广州:广东科技出版社,1995:375-376.
[31]张辉,彭平安.开放体系下干酪根生烃动力学研究[J].西南石油大学学报(自然科学版),2008,30(6):18-21+202-203.
[32] SWEENEY J J,BURNHAM A K. Evaluation of a simple model of vitrinite reflectance based on Chemical kinetics[J]. AAPG Bulletin,1990,74(10):1559-1570.
[33]秦艳,彭平安,于赤灵,等.硫在干酪根裂解生烃中的作用[J].科学通报,2004(增刊):9-16.
[34]马中豪,陈清石,史忠汪,等.鄂尔多斯盆地南缘延长组长7油页岩地球化学特征及其地质意义[J].地质通报,2016,35(9):1550-1558.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |