祁攀文;姜呈馥;刘刚;史鹏;赵谦平;万永平;

• 1:陕西延长石油(集团)有限责任公司研究院

• 2:陕西延长石油(集团)有限责任公司资源与勘探开发部

摘要(Abstract)：

鄂尔多斯盆地三叠系陆相页岩具有高黏土矿物质量分数(41.4%)、高有机碳质量分数(3.0%~7.0%)、低热演化程度(0.5%~1.4%)、低孔隙度(1.0%~3.0%)、低渗透率(低于0.05×10-3μm2)和强非均质性等特点,页岩含气性及页岩气赋存状态成为资源评价的关键。基于页岩生气模拟实验,获得研究区页岩生气过程、天然气累计转化率及生气总量;基于甲烷等温吸附实验及现场解析实验,完成页岩对甲烷的吸附能力及页岩气总含气量测试。结果表明,鄂尔多斯盆地三叠系延长组页岩生气时期为距今130~90Ma,生气高峰期为距今100Ma,CH4及C2~C5的累计转化率分别为35%及71%,烃类气体总产率为53.5mL/gTOC,页岩总生气量在1.23~4.01m3/t之间,平均可达2.30m3/t,页岩对甲烷的吸附能力在1.04~3.20m3/t之间,平均为1.96m3/t,现场解析气(不含损失气)含量在1.20~1.90m3/t之间,平均为1.61m3/t。研究区页岩气以吸附态为主,含少量游离态及溶解态天然气,页岩总含气量为1.96~2.30m3/t。

关键词(KeyWords)：鄂尔多斯盆地;三叠系;陆相页岩气;生气模拟;含气量

Abstract:

Keywords:

基金项目(Foundation):国家高技术研究发展计划(863计划)项目(2013AA064501);; 陕西省科技统筹创新工程项目(2012KTZB03-03-01)

作者(Author):祁攀文;姜呈馥;刘刚;史鹏;赵谦平;万永平;

Email:

参考文献(References)：

• [1]童晓光,张光亚,王兆明,等.全球油气资源潜力与分布[J].地学前缘,2014,21(3):1-9.Tong Xiaoguang,Zhang Guangya,Wang Zhaoming,et al.Global oil and gas potential and distribution[J].Earth Science Frontiers,2004,21(3):1-9.

• [2]张金川,金之钧,袁明生.页岩气成藏机理和分布[J].天然气工业,2004,24(7):8-15.Zhang Jinchuan,Jin Zhijun,Yuan Mingsheng.Reservoiring mechanism of shale gas and its distribution[J].Natural Gas Industry,2004,24(7):8-15.

• [3]王香增,张金川,曹金舟,等.陆相页岩气资源评价初探:以延长直罗—下寺湾区中生界长7段为例[J].地学前缘,2012,19(2):192-197.Wang Xiangzeng,Zhang Jinchuan,Cao Jinzhou,et al.A preliminary discussion on evaluation of continental shale gas resources:A case study of Chang7of Mesozoic Yanchang formation in Zhiluo-Xiasiwan area of Yanchang[J].Earth Science Frontiers,2012,19(2):192-197.

• [4]王香增,高胜利,高潮.鄂尔多斯盆地南部中生界陆相页岩气地质特征[J].石油勘探与开发,2014,41(3):294-304.Wang Xiangzeng,Gao Shengli,Gao Chao.Geological features of Mesozoic continental shale gas in south of Ordos basin,NW China[J].Petroleum Exploration and Development,2014,41(3):294-304.

• [5]王凤琴,王香增,张丽霞,等.页岩气资源量计算:以鄂尔多斯盆地中生界三叠系延长组长7为例[J].地学前缘,2013,20(1):1-7.Wang Fengqin,Wang Xiangzeng,Zhang Lixia,et al.The shale gas resources estimation:An example from Mesozoic Triassic Yanchang formation Chang7member,Ordos basin[J].Earth Science Frontiers,2013,20(1):1-7.

• [6]窦伟坦,侯明才,陈洪德,等.鄂尔多斯盆地三叠系延长组油气成藏条件及主控因素研究[J].成都理工大学学报:自然科学版,2008,35(6):686-692.Dou Weitan,Hou Mingcai,Chen Hongde,et al.A research on the conditions of the reservoir formation and the main controlling factors of the upper Triassic Yanchang formation in Ordos basin,China[J].Journal of Chengdu University of Technology:Science&Technology Edition,2008,35(6):686-692.

• [7]吴保祥,何金先,张晓丽,等.鄂尔多斯盆地地层埋藏演化与油气成藏分析[J].东北石油大学学报,2012,36(6):8-13.Wu Baoxiang,He Jinxian,Zhang Xiaoli,et al.Analysis of burial evolution of stratum and oil-gas reservoirs formation in Ordos basin[J].Journal of Northeast Petroleum University,2012,36(6):8-13.

• [8]陈瑞银,罗晓容,赵文智,等.鄂尔多斯盆地中生代热异常及烃源岩热演化特征[J].石油勘探与开发,2008,34(6):658-663.Chen Ruiyin,Luo Xiaorong,Zhao Wenzhi,et al.Thermal anomaly and thermal evolution of source rocks in Mesozoic,Ordos basin[J].Petroleum Exploration and Development,2008,34(6):658-663.

• [9]万永平,王根厚,归榕,等.陕北斜坡上古生界构造裂缝及其天然气成藏意义[J].吉林大学学报:地球科学版,2013,43(1):28-38.Wan Yongping,Wang Genhou,Gui Rong,et al.Fractures of the upper Paleozoic in northern Shanxi slope and its natural gas accumulation significance[J].Journal of Jilin University:Earth Science Edition,2013,43(1):28-38.

• [10]Connan J.Time-temperature relation in oil genesis[J].AAPG Bulletin,1974,58(1):2516-2521.

• [11]万永平,梁晓,李园园.基于流体包裹体的储层微裂缝研究——以陕北斜坡上古生界为例[J].地质与勘探,2010,46(4):711-715.Wan Yongping,Liang Xiao,Li Yuanyuan.Fractures of reservoirs inferred from fluid inclusions:A case study of the upper Paleozoic of northern Shanxi slope[J].Geology and Exploration,2010,46(4):711-715.

• [12]苏现波,林晓英.煤层气地质学[M].北京:煤炭工业出版社,2007:119-123.Su Xianbo,Lin Xiaoying.Geology of coalbed gas[M].Beijing:China Coal Industry Publishing House,2007:119-123.

• [13]Waechter B,Hampton G L.Overview of coal and shale gas measurement:Field and laboratory procedures[C]//Proceedings of the2004International Coalbed Methane Symposium.Tuscaloosa,Alabama:The University of Alabama,2004:1-17.

• [14]万丛礼,付金华,张军.鄂尔多斯西缘前陆盆地构造—热事件与油气运移[J].球科学与环境学报,2005,27(2):43-47.Wan Congli,Fu Jinhua,Zhang Jun.Tectono-thermal event in west foreland basin of Ordos and its effects on oil-gas migration[J].Journal of Earth Science and Environment,2005,27(2):43-47.

• [15]陈瑞银,罗晓荣,陈占坤,等.鄂尔多斯盆地中生代地层剥蚀量估算及其地质意义[J].地质学报,2006,80(5):685-693.Chen Ruiyin,Luo Xiaorong,Chen Zhankun,et al.Estimation of denudation thickness of Mesozoic stata in the Ordos basin and its geological significance[J].Acta Geological Sinica,2006,80(5):685-693.

• [16]史鹏,姜呈馥,孙兵华,等.鄂尔多斯盆地南部延长组页岩微观储集空间特征[J].东北石油大学学报,2015,39(5):71-79.Shi Peng,Jiang Chengfu,Sun Binghua,et al.Characteristics of Yanchang formation shale microscopic reservoir space of in south of Ordos basin[J].Journal of Northeast Petroleum University,2015,39(5):71-79.

• [17]杨镱婷,张金川,王香增,等.陆相页岩气的泥页岩评价——以延长下寺湾区上三叠统延长组长7段为例[J].东北石油大学学报,2012,36(4):10-17.Yang Yiting,Zhang Jinchuan,Wang Xiangzen,et al.Resource rock evaluation of continental shale gas:A case study of Chang7of Mesozoic Yanchang formation in Xiasiwan area of Yanchang[J].Journal of Northeast Petroleum University,2012,36(4):10-17.

• [18]林彤,雍自权,刘树根,等.川东南石林地区五峰组—龙马溪组黑色页岩特征[J].东北石油大学学报,2015,39(3):83-93.Lin Tong,Yong Ziquan,Liu shugen,et al.Wufeng formation in Shilin area of southeastern Sichuan basin-Longmaxi formation black shale characteristics[J].Journal of Northeast Petroleum University,2015,39(3):83-93.

• [19]张鲁川,卢双舫,肖佃师,等.基于井震联合反演方法的泥页岩有机碳质量分数预测及应用[J].东北石油大学学报,2015,39(2):34-41.Zhang Luchuan,Lu Shuangfang,Xiao Dianshi,et al.Organic carbon of the shale mass fraction prediction and application based on the well-seismic inversion method[J].Journal of Northeast Petroleum University,2015,39(2):34-41.

• [20]冯光俊,朱炎铭,王阳,等.鄂尔多斯盆地延长组页岩气储层优选[J].特种油气藏,2015,22(5):60-64.Feng Guangjun,Zhu Yanming,Wang Yang,et al.Shale gas reservoir optimization of Yanchang formation in Ordos basin[J].Special Oil&Gas Reservoirs,2015,22(5):60-64.