鄂尔多斯盆地丰富川地区延长组流体包裹体特征及油气成藏期次
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摘要
为研究鄂尔多斯盆地丰富川地区延长组长2和长6储层砂岩中流体包裹体特征及油气成藏期次,开展了荧光显微镜鉴定和冷热台测温等实验分析,并应用包裹体均一温度与埋藏史和热演化史相结合,判断目的层的油气充注时间。结果表明:①研究区流体包裹体主要包括盐水包裹体和含液态烃包裹体;②长6流体包裹体均一温度为100～120℃,长2流体包裹体均一温度为90～110℃,流体包裹体捕获时地层处于中成岩A期,盐度小于10.5‰,属于中等盐度;③长2和长6均发生过一期油气充注,为早白垩世。长2油气充注时间为距今115～100 Ma,长6油气充注时间为距今120～105 Ma。该研究成果证实了鄂尔多斯盆地丰富川地区延长组为连续充注型油气藏。
In order to determine hydrocarbon accumulation period and characteristics of oil-gas fluid inclusion in Chang 2 and Chang 6 reservoir in Fengfuchuan area of Ordos Basin,fluorescence microscope identification and hot and cold temperature experimental analysis were carried out,and the homogenization temperature of inclusions and burial history and thermal evolution history were applied to determine the oil and gas filling time of the target zone.The results show that:(1)fluid inclusions in the study area mainly consist of saline inclusions and liquid hydrocarbon inclusions;(2)the homogenization temperatures of fluid inclusions in Chang 6 and Chang2 reservoir are 100-120 ℃ and 90-110 ℃,respectively,and the stratum was in diagenetic A stage when fluid inclusions were captured,with salinity less than 10.5‰,which belonged to moderate salinity;(3)both Chang2 and Chang 6 were filled with oil and gas in the first stage,which was Early cretaceous. The oil and gas filling time of Chang 2 is 115-100 Ma,and that of Chang 6 is 120-105 Ma. The research results confirm that Yanchang Formation in Fengfuchuan area is a continuous filling reservoir.
In order to determine hydrocarbon accumulation period and characteristics of oil-gas fluid inclusion in Chang 2 and Chang 6 reservoir in Fengfuchuan area of Ordos Basin,fluorescence microscope identification and hot and cold temperature experimental analysis were carried out,and the homogenization temperature of inclusions and burial history and thermal evolution history were applied to determine the oil and gas filling time of the target zone.The results show that:(1)fluid inclusions in the study area mainly consist of saline inclusions and liquid hydrocarbon inclusions;(2)the homogenization temperatures of fluid inclusions in Chang 6 and Chang2 reservoir are 100-120 ℃ and 90-110 ℃,respectively,and the stratum was in diagenetic A stage when fluid inclusions were captured,with salinity less than 10.5‰,which belonged to moderate salinity;(3)both Chang2 and Chang 6 were filled with oil and gas in the first stage,which was Early cretaceous. The oil and gas filling time of Chang 2 is 115-100 Ma,and that of Chang 6 is 120-105 Ma. The research results confirm that Yanchang Formation in Fengfuchuan area is a continuous filling reservoir.
引文
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[17]赵孟为,汉斯·阿伦特,克劳斯·魏玛.鄂尔多斯盆地伊利石K-Ar等时线图解与年龄.沉积学报,1997,15(4):148-151.ZHAO M W,AHRENDT H,WEMMER K.The K-Ar isochron diagram and ages of illites from the Ordos Basin.Acta Sedimentologica Sinica,1997,15(4):148-151.
[18]李森,朱如凯,崔景伟,等.古环境与有机质富集控制因素研究:以鄂尔多斯盆地南缘长7油层组为例.岩性油气藏,2019,31(1):87-95.LI S,ZHU R K,CUI J W,et al.Paleoenvironment and controlling factors of organic matter enrichment:a case of Chang 7 oil reservoir in southern margin of Ordos Basin.Lithologic Reservoirs,2019,31(1):87-95.
[19]唐建云,王志维,也尔哈那提·黑扎提,等.鄂尔多斯盆地旬邑探区延长组烃源岩及原油地球化特征.岩性油气藏,2017,29(2):107-116.TANG J Y,WANG Z W,YE’ERHANATI H Z T,et al.Source rocks and geochemical characteristics of crude oil of the Yanchang Formation in Xunyi exploration area,Ordos Basin.Lithologic Reservoirs,2017,29(2):107-116.
[20]陈丹敏,袁振涛.鄂尔多斯白豹地区三叠系流体包裹体的特征及其在确定油气成藏期中的应用.西安石油大学学报(自然科学版),2009,24(2):31-38.CHEN D M,YUAN Z T.Characteristics of the fluid inclusion of the Triassic in Baibao area,Ordos Basin and their application in the study on the hydrocarbon accumulation stages.Journal of Xi'an Shiyou University(Natural&Science Edition),2009,24(2):31-38.
[21]BODNAR R J.Revised equation and stable for determining the freezing point depression of H2O-NaCl solution.Geochimica et Cosmochimica Acta,1993,57:683-684.
[22]刘小洪,冯明友,罗静兰,等.鄂尔多斯盆地乌审召地区盒8、山1段储层流体包裹体特征及其意义.石油与天然气地质,2010,31(3):360-366.LIU X H,FENG M Y,LUO J L,et al.Characteristics of fluid inclusions in reservoirs in the eighth member of the Shihezi Formation and the first member of the Shanxi Formation in Uxin Ju area,the Ordos Basin and their significance.Oil&Gas Geology,2010,31(3):360-366.
[23]邓津辉,黄晓波,李慧勇,等.辽东湾海域JZ25地区流体包裹体与油气运移.石油与天然气地质,2009,30(4):420-427.DENG J H,HUANG X B,LI H Y,et al.An analysis on fluid inclusions and hydrocarbon migration in JZ 25 area of Liaodong Bay waters.Oil&Gas Geology,2009,30(4):420-427.
[24]李超,张立强,张立宽,等.鄂尔多斯盆地镇泾地区中生代地层剥蚀厚度估算及古构造恢复.岩性油气藏,2016,28(2):72-79.LI C,ZHANG L Q,ZHANG L K,et al.Estimation of denudation thickness of Mesozoic strata and paleostructure restoration in Zhenjing area,Ordos Basin.Lithologic Reservoirs,2016,28(2):72-79.
[25]刘超,王震亮,刘池洋,等.鄂尔多斯盆地延长矿区延长组流体包裹体特征.地球学报,2009,30(2):215-220.LIU C,WANG Z L,LIU C Y,et al.Characteristics of Fluid Inclusions in Yanchang Formation of the Yanchang Oilfield,Ordos Basin.Acta Geoscientica Sinica,2009,30(2):215-220.
[26]李艳霞,刘洪军,袁东山,等.石油充注对储层成岩矿物演化的影响.石油与天然气地质,2003,24(3):274-280.LI Y X,LIU H J,YUAN D S,et al.Effect of oil charging on reservoir's diagenetic mineral evolution.Oil&Gas Geology,2003,24(3):274-280.
[27]夏青松,黄成刚,陆江.沉积盆地中油气充注与储集层成岩作用的响应关系.地球科学与环境学报,2019,41(2):185-196.XIA Q S,HUANG C G,LU J.Response relationship between hydrocarbon charging and diagenesis of reservoirs in sedimentary basin.Journal of Earth Sciences and Environment,2019,41(2):185-196.
[2]欧光习,李林强,孙玉梅.沉积盆地流体包裹体研究的理论与实践.矿物岩石地球化学通报,2006,25(1):1-11.OU G X,LI L Q,SUN Y M.Theory and application of the fluid inclusion research on the sedimentary basins.Bulletin of Mineralogy,Petrology and Geochemistry,2006,25(1):1-11.
[3]张文淮,陈紫英.流体包裹体地质学.武汉:中国地质大学出版社,1993.ZHANG W H,CHEN Z Y.Fluid inclusion geology.Wuhan:China University of Geosciences Press,1993.
[4]宋芳.油气充注历史研究方法综述.石油地质与工程,2008,22(1):18-21.SONG F.Study on oil charging history.Petroleum Geology and Engineering,2008,22(1):18-21.
[5]付金华,柳广弟,杨伟伟,等.鄂尔多斯盆地陇东地区延长组低渗透油藏成藏期次研究.地学前缘,2013,20(2):125-131.FU J H,LIU G D,YANG W W,et al.A study of the accumulation periods of low permeability reservoir of Yanchang Formation in Longdong area,Ordos Basin.Earth Science Frontiers,2013,20(2):125-131.
[6]王传远,段毅,杜建国,等.鄂尔多斯盆地长9油层组流体包裹体特征与油气成藏期次分析.地质科技情报,2009,28(4):47-57.WANG C Y,DUAN Y,DU J G,et al.Hydrocarbon migration stages in Chang 9 formation in Ordos Basin by fluid inclusion analysis.Geological Science and Technology Information,2009,28(4):47-57.
[7]杨俊杰.鄂尔多斯盆地构造演化与油气分布规律.北京:石油工业出版社,2002:228.YANG J J.Tectonic evolution and petroleum distribution of Ordos Basin.Beijing:Petroleum Industry Press,2002:228.
[8]赵澄林,朱筱敏.沉积岩石学.北京:石油工业出版社,2001:101-134.ZHAO C L,ZHU X M.Sedimentary petrography.Beijing:Petroleum Industry Press,2001:101-134.
[9]何自新.鄂尔多斯盆地演化与油气.北京:石油工业出版社,2003:390.HE Z X.The evolution and petroleum of the Ordos Basin.Beijing:Petroleum Industry Press,2003:390.
[10]任战利,张盛,高胜利,等.鄂尔多斯盆地构造热演化史及其成藏成矿意义.中国科学D辑:地球科学,2007,37(增刊1):23-32.REN Z L,ZHANG S,GAO S L,et al.Tectonic thermal history and its significance on the formation of oil and gas accumulation and mineral deposit in Ordos Basin.Science in China Series D:Earth Sciences,2007,37(Suppl 1):23-32.
[11]任战利,赵重远.鄂尔多斯盆地古地温研究.沉积学报,1994,12(1):56-65.REN Z L,ZHAO C Y.Research on paleotemperature in the Ordos Basin.Acta Sedimentologica Sinica,1994,12(1):56-65.
[12]柳益群,李文厚,冯乔.鄂尔多斯盆地东部上三叠统含油砂岩的古地温及成岩阶段.地质学报,1997,71(1):65-74.LIU Y Q,LI W H,FENG Q.Palaeotemperatures and diagenetic stage of the Upper Triassic oil sand stones in the eastern Ordos Basin.Acta Geologica Sinica,1997,71(1):65-74.
[13]GOLDSTEIN R H.Fluid inclusions in sedimentary and diagenetic systems.Lithos,2001,55(1/4):159-193.
[14]任战利,刘丽,崔军平,等.盆地构造热演化史在油气成藏期次研究中的应用.石油与天然气地质,2008,29(4):503-506.REN Z L,LIU L,CUI J P,et al.Application of tectonic thermal evolution history to hydrocarbon accumulation timing in sedimentary basins.Oil&Gas Geology,2008,29(4):503-506.
[15]付金华,李士祥,刘显阳.鄂尔多斯盆地石油勘探地质理论与实践.天然气地球科学,2013,24(6):1091-1101.FU J H,LI S X,LIU X Y.Geological theory and practice of petroleum exploration in the Ordos Basin.Natural Gas Geoscience,2013,24(6):1091-1101.
[16]李荣西,席胜利,邸领军.用储层油气包裹体岩相学确定油气成藏期次:以鄂尔多斯盆地陇东油田为例.石油与天然气地质,2006,27(2):194-217.LI R X,XI S L,DI L J.Oil/gas reservoiring phases determined through petrographic analysis of hydrocarbon inclusions in reservoirs:Taking Longdong oilfield,Ordos Basin,as an example.Oil&Gas Geology,2006,27(2):194-217.
[17]赵孟为,汉斯·阿伦特,克劳斯·魏玛.鄂尔多斯盆地伊利石K-Ar等时线图解与年龄.沉积学报,1997,15(4):148-151.ZHAO M W,AHRENDT H,WEMMER K.The K-Ar isochron diagram and ages of illites from the Ordos Basin.Acta Sedimentologica Sinica,1997,15(4):148-151.
[18]李森,朱如凯,崔景伟,等.古环境与有机质富集控制因素研究:以鄂尔多斯盆地南缘长7油层组为例.岩性油气藏,2019,31(1):87-95.LI S,ZHU R K,CUI J W,et al.Paleoenvironment and controlling factors of organic matter enrichment:a case of Chang 7 oil reservoir in southern margin of Ordos Basin.Lithologic Reservoirs,2019,31(1):87-95.
[19]唐建云,王志维,也尔哈那提·黑扎提,等.鄂尔多斯盆地旬邑探区延长组烃源岩及原油地球化特征.岩性油气藏,2017,29(2):107-116.TANG J Y,WANG Z W,YE’ERHANATI H Z T,et al.Source rocks and geochemical characteristics of crude oil of the Yanchang Formation in Xunyi exploration area,Ordos Basin.Lithologic Reservoirs,2017,29(2):107-116.
[20]陈丹敏,袁振涛.鄂尔多斯白豹地区三叠系流体包裹体的特征及其在确定油气成藏期中的应用.西安石油大学学报(自然科学版),2009,24(2):31-38.CHEN D M,YUAN Z T.Characteristics of the fluid inclusion of the Triassic in Baibao area,Ordos Basin and their application in the study on the hydrocarbon accumulation stages.Journal of Xi'an Shiyou University(Natural&Science Edition),2009,24(2):31-38.
[21]BODNAR R J.Revised equation and stable for determining the freezing point depression of H2O-NaCl solution.Geochimica et Cosmochimica Acta,1993,57:683-684.
[22]刘小洪,冯明友,罗静兰,等.鄂尔多斯盆地乌审召地区盒8、山1段储层流体包裹体特征及其意义.石油与天然气地质,2010,31(3):360-366.LIU X H,FENG M Y,LUO J L,et al.Characteristics of fluid inclusions in reservoirs in the eighth member of the Shihezi Formation and the first member of the Shanxi Formation in Uxin Ju area,the Ordos Basin and their significance.Oil&Gas Geology,2010,31(3):360-366.
[23]邓津辉,黄晓波,李慧勇,等.辽东湾海域JZ25地区流体包裹体与油气运移.石油与天然气地质,2009,30(4):420-427.DENG J H,HUANG X B,LI H Y,et al.An analysis on fluid inclusions and hydrocarbon migration in JZ 25 area of Liaodong Bay waters.Oil&Gas Geology,2009,30(4):420-427.
[24]李超,张立强,张立宽,等.鄂尔多斯盆地镇泾地区中生代地层剥蚀厚度估算及古构造恢复.岩性油气藏,2016,28(2):72-79.LI C,ZHANG L Q,ZHANG L K,et al.Estimation of denudation thickness of Mesozoic strata and paleostructure restoration in Zhenjing area,Ordos Basin.Lithologic Reservoirs,2016,28(2):72-79.
[25]刘超,王震亮,刘池洋,等.鄂尔多斯盆地延长矿区延长组流体包裹体特征.地球学报,2009,30(2):215-220.LIU C,WANG Z L,LIU C Y,et al.Characteristics of Fluid Inclusions in Yanchang Formation of the Yanchang Oilfield,Ordos Basin.Acta Geoscientica Sinica,2009,30(2):215-220.
[26]李艳霞,刘洪军,袁东山,等.石油充注对储层成岩矿物演化的影响.石油与天然气地质,2003,24(3):274-280.LI Y X,LIU H J,YUAN D S,et al.Effect of oil charging on reservoir's diagenetic mineral evolution.Oil&Gas Geology,2003,24(3):274-280.
[27]夏青松,黄成刚,陆江.沉积盆地中油气充注与储集层成岩作用的响应关系.地球科学与环境学报,2019,41(2):185-196.XIA Q S,HUANG C G,LU J.Response relationship between hydrocarbon charging and diagenesis of reservoirs in sedimentary basin.Journal of Earth Sciences and Environment,2019,41(2):185-196.
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