渤海湾盆地沾化凹陷罗63井沙一段碎裂岩方解石胶结物中流体包裹体特征
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摘要
为了解沾化凹陷泥页岩裂缝型油藏的成藏特点,对沾化凹陷罗63井沙一段碎裂岩方解石胶结物中的流体包裹体开展了岩相学及包裹体温、压及成分分析。结果表明,碎裂岩的碎粒颗粒为泥晶白云岩,碎粒之间为亮晶方解石充填胶结,其内主要发育低气液比的烃包裹体与少量共生的气液两相盐水包裹体。烃包裹体均一温度为102~110℃,盐水包裹体均一温度为115~119℃,冰点温度为-1.7~-2.0℃,盐度为2.8%~3.3%NaCl_(eqv),呈现低盐度流体的特征;烃包裹体的捕获温度为124~126℃,捕获压力为16.7~18.6 MPa;单体烃包裹体主要由碳数小于25的正构烷烃类组成,主峰碳为C15,Pr/n C17、Ph/n C18和Pr/Ph值分别为0.42、0.55和0.69,方解石胶结物捕获的轻质油应源自渤南洼陷中心相对成熟的沙四段烃源岩,捕获时的流体压力系数大于1.56。
In order to understand the characteristics of fractured shale oil reservoir in the Zhanhua depression,the petrology of cataclasite,microthermometry,trapped temperature,pressure and composition of typical hydrocarbon inclusion in calcite cement of cataclasite from the First sub-Member of the Shahejie Formation of well Luo63,Zhanhua depression,Bohai Bay basin,are performed. The results show that the cataclasite is micritic dolomite,which cemented by calcsparite.Fluid inclusions in calcite are mainly hydrocarbon inclusions and minor two phase( gas-liquid) saline-water inclusions.The homogenization temperatures of gas-liquid hydrocarbon inclusions are from 102 oto 110 ℃,while the homogenization temperatures of gas-liquid saline water inclusions are 115 to 119 ℃. The freezing temperature of gas-liquid saline water inclusions are-1. 7--2. 0 ℃,yielding low salinity of 2. 8%-3. 3% Na Cleqv. The trapped temperature and pressure of typical hydrocarbon inclusions are at 124-126 ℃ and 16. 7-18. 6 Mpa,repectively. The compositions of single hydrocarbon inclusion are mainly domained by normal paraffin hydrocarbon with carbon atoms less than 25. Among them,the main peak is C15. The ratios of Pr/n C17,Ph/n C18 and Pr/Ph are 0. 42,0. 55 and 0. 69,respectively. The light oil trapped by calcite cement derived from mature source rocks of the Forth Member of the Shahejie Formation in the centre of Bonan sagwith pressure coefficient of trapped fluid more than 1. 56.
In order to understand the characteristics of fractured shale oil reservoir in the Zhanhua depression,the petrology of cataclasite,microthermometry,trapped temperature,pressure and composition of typical hydrocarbon inclusion in calcite cement of cataclasite from the First sub-Member of the Shahejie Formation of well Luo63,Zhanhua depression,Bohai Bay basin,are performed. The results show that the cataclasite is micritic dolomite,which cemented by calcsparite.Fluid inclusions in calcite are mainly hydrocarbon inclusions and minor two phase( gas-liquid) saline-water inclusions.The homogenization temperatures of gas-liquid hydrocarbon inclusions are from 102 oto 110 ℃,while the homogenization temperatures of gas-liquid saline water inclusions are 115 to 119 ℃. The freezing temperature of gas-liquid saline water inclusions are-1. 7--2. 0 ℃,yielding low salinity of 2. 8%-3. 3% Na Cleqv. The trapped temperature and pressure of typical hydrocarbon inclusions are at 124-126 ℃ and 16. 7-18. 6 Mpa,repectively. The compositions of single hydrocarbon inclusion are mainly domained by normal paraffin hydrocarbon with carbon atoms less than 25. Among them,the main peak is C15. The ratios of Pr/n C17,Ph/n C18 and Pr/Ph are 0. 42,0. 55 and 0. 69,respectively. The light oil trapped by calcite cement derived from mature source rocks of the Forth Member of the Shahejie Formation in the centre of Bonan sagwith pressure coefficient of trapped fluid more than 1. 56.
引文
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Liu D H,Xiao X M,Mi J K,Li X Q,Shen J K,Song Z G,Peng P A.2003.Determination of trapping pressure and temperature of petroleum inclusions using p VT simulation software-a case study of lower Ordovician carbonates from the Lunnan Low Uplift,Tarim Basin.Marine and Petroleum Geology,20(1):29-43
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池英柳,杨池银,周建生.2000.渤海湾盆地新生代断裂活动与含油气系统形成.勘探家,5(3):41-48.
胡雄,梁为,李洋冰,朱学光,黄伟强,侯厶靖,徐博瑞.2014.黄河口凹陷流体包裹体成藏年代学和充注期次研究.矿物岩石地球化学通报,33(6):869-873
李胜利,于兴河,陈建阳,冯动军,王永诗.2006.渤海湾盆地济阳坳陷沾化凹陷地层流体压力分布规律及其对油气成藏的影响.地质力学学报,12(1):37-42
刘华,蒋有录,谷国翠,刘雅利,卢浩.2013.沾化凹陷渤南洼陷古近系压力特征及成因机制.中国石油大学学报(自然科学版),37(4):46-51,70.
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刘培,蒋有录,刘华,熊伟,李克成,朱荣伟.2013.渤海湾盆地沾化凹陷断层活动与新近系油气成藏关系.天然气地球科学,24(3):541-547
卢浩,蒋有录,刘华,张怀吉,刘雅利.2012.沾化凹陷渤南洼陷油气成藏期分析.油气地质与采收率,19(2):5-8
卢焕章,范宏瑞,倪培,欧光习,沈昆,张文淮.2004.流体包裹体.北京:科学出版社
罗胜元.2014.沾化凹陷渤南洼陷超压系统与油气成藏研究.博士学位论文.武汉:中国地质大学,44-95
罗文生,张善文,王永诗,林会喜,彭传圣.2007.渤南洼陷古近系-新近系断层活动与油气成藏.油气地质与采收率,14(3):34-37
倪培,范宏瑞,丁俊英.2014.流体包裹体研究进展.矿物岩石地球化学通报,33(1):1-5
欧光习,李林强,孙玉梅.2006.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,25(1):1-11
潘立银,倪培,欧光习,丁俊英.2006.油气包裹体在油气地质研究中的应用-概念、分类、形成机制及研究意义.矿物岩石地球化学通报,25(1):19-28
彭存仓.2009.沾化凹陷断层活动性及其叠合特征.油气地质与采收率,16(5):37-39,43
宋璠,邱隆伟,苏妮娜,徐宁宁,周鹏.2016.渤海湾盆地渤南洼陷古近系沙河街组二段沉积相特征及演化.石油与天然气地质,37(4):499-508
宋国奇,刘华,蒋有录,谷国翠,刘雅利,卢浩.2014.沾化凹陷渤南洼陷沙河街组原油成因类型及分布特征.石油实验地质,36(1):33-38,45
苏奥,陈红汉,雷川,陈旭,王萍,吴桐,陈锦,陈慧钦.2014.流体包裹体p VTx模拟研究油气充注期次和古压力恢复:以西湖凹陷平湖构造带为例.地质科技情报,33(6):137-142
王鸿升,胡天跃.2014.渤海湾盆地沾化凹陷页岩油形成影响因素分析.天然气地球科学,25(S1):141-149
王志刚.2003.沾化凹陷裂缝性泥质岩油藏研究.石油勘探与开发,30(1):41-43
吴智平,李伟,郑德顺,吕洪波.2004.沾化凹陷中、新生代断裂发育及其形成机制分析.高校地质学报,10(3):405-417
徐福刚,李琦,康仁华,刘魁元.2003.沾化凹陷泥岩裂缝油气藏研究.矿物岩石,23(1):74-76
杨超,陈清华.2005.济阳坳陷构造演化及其构造层的划分.油气地质与采收率,12(2):9-12,22
张凡芹,王伟锋,戴俊生.2003.沾化凹陷断层活动性及其对层序发育的控制作用.石油与天然气地质,24(3):253-259
张枝焕,曾艳涛,张学军,袁东山,徐兴友.2006.渤海湾盆地沾化凹陷渤南洼陷原油地球化学特征及成藏期分析.石油实验地质,28(1):54-58
智凤琴,李琦,樊德华,张翠梅.2004.沾化凹陷泥岩裂缝油气藏油气运移聚集研究.油气地质与采收率,11(5):27-29,82
周心怀,牛成民,藤长宇.2009.环渤中地区新构造运动期断裂活动与油气成藏关系.石油与天然气地质,30(4):469-475,482
周新桂,孙宝珊.1996.新疆塔里木盆地北部井下碎裂岩特征及其与油气关系.地质力学学报,2(3):65-67
Bodmar R J.1990.Petroleum migration in the Miocene Monterey Formation California,USA:Constraints from fluid-inclusion studies.Mineralogical Magazine,54(375):295-304
Liu D H,Xiao X M,Mi J K,Li X Q,Shen J K,Song Z G,Peng P A.2003.Determination of trapping pressure and temperature of petroleum inclusions using p VT simulation software-a case study of lower Ordovician carbonates from the Lunnan Low Uplift,Tarim Basin.Marine and Petroleum Geology,20(1):29-43
Munz I A.2001.Petroleum inclusions in sedimentary basins:systematic,analytical methods and applications.Lithos,55(1-4):195-212
池英柳,杨池银,周建生.2000.渤海湾盆地新生代断裂活动与含油气系统形成.勘探家,5(3):41-48.
胡雄,梁为,李洋冰,朱学光,黄伟强,侯厶靖,徐博瑞.2014.黄河口凹陷流体包裹体成藏年代学和充注期次研究.矿物岩石地球化学通报,33(6):869-873
李胜利,于兴河,陈建阳,冯动军,王永诗.2006.渤海湾盆地济阳坳陷沾化凹陷地层流体压力分布规律及其对油气成藏的影响.地质力学学报,12(1):37-42
刘华,蒋有录,谷国翠,刘雅利,卢浩.2013.沾化凹陷渤南洼陷古近系压力特征及成因机制.中国石油大学学报(自然科学版),37(4):46-51,70.
刘魁元,孙喜新,李琦,刘连启.2004.沾化凹陷泥质岩储层中裂缝类型及其成因研究.石油大学学报(自然科学版),28(4):12-15
刘培,蒋有录,刘华,熊伟,李克成,朱荣伟.2013.渤海湾盆地沾化凹陷断层活动与新近系油气成藏关系.天然气地球科学,24(3):541-547
卢浩,蒋有录,刘华,张怀吉,刘雅利.2012.沾化凹陷渤南洼陷油气成藏期分析.油气地质与采收率,19(2):5-8
卢焕章,范宏瑞,倪培,欧光习,沈昆,张文淮.2004.流体包裹体.北京:科学出版社
罗胜元.2014.沾化凹陷渤南洼陷超压系统与油气成藏研究.博士学位论文.武汉:中国地质大学,44-95
罗文生,张善文,王永诗,林会喜,彭传圣.2007.渤南洼陷古近系-新近系断层活动与油气成藏.油气地质与采收率,14(3):34-37
倪培,范宏瑞,丁俊英.2014.流体包裹体研究进展.矿物岩石地球化学通报,33(1):1-5
欧光习,李林强,孙玉梅.2006.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,25(1):1-11
潘立银,倪培,欧光习,丁俊英.2006.油气包裹体在油气地质研究中的应用-概念、分类、形成机制及研究意义.矿物岩石地球化学通报,25(1):19-28
彭存仓.2009.沾化凹陷断层活动性及其叠合特征.油气地质与采收率,16(5):37-39,43
宋璠,邱隆伟,苏妮娜,徐宁宁,周鹏.2016.渤海湾盆地渤南洼陷古近系沙河街组二段沉积相特征及演化.石油与天然气地质,37(4):499-508
宋国奇,刘华,蒋有录,谷国翠,刘雅利,卢浩.2014.沾化凹陷渤南洼陷沙河街组原油成因类型及分布特征.石油实验地质,36(1):33-38,45
苏奥,陈红汉,雷川,陈旭,王萍,吴桐,陈锦,陈慧钦.2014.流体包裹体p VTx模拟研究油气充注期次和古压力恢复:以西湖凹陷平湖构造带为例.地质科技情报,33(6):137-142
王鸿升,胡天跃.2014.渤海湾盆地沾化凹陷页岩油形成影响因素分析.天然气地球科学,25(S1):141-149
王志刚.2003.沾化凹陷裂缝性泥质岩油藏研究.石油勘探与开发,30(1):41-43
吴智平,李伟,郑德顺,吕洪波.2004.沾化凹陷中、新生代断裂发育及其形成机制分析.高校地质学报,10(3):405-417
徐福刚,李琦,康仁华,刘魁元.2003.沾化凹陷泥岩裂缝油气藏研究.矿物岩石,23(1):74-76
杨超,陈清华.2005.济阳坳陷构造演化及其构造层的划分.油气地质与采收率,12(2):9-12,22
张凡芹,王伟锋,戴俊生.2003.沾化凹陷断层活动性及其对层序发育的控制作用.石油与天然气地质,24(3):253-259
张枝焕,曾艳涛,张学军,袁东山,徐兴友.2006.渤海湾盆地沾化凹陷渤南洼陷原油地球化学特征及成藏期分析.石油实验地质,28(1):54-58
智凤琴,李琦,樊德华,张翠梅.2004.沾化凹陷泥岩裂缝油气藏油气运移聚集研究.油气地质与采收率,11(5):27-29,82
周心怀,牛成民,藤长宇.2009.环渤中地区新构造运动期断裂活动与油气成藏关系.石油与天然气地质,30(4):469-475,482
周新桂,孙宝珊.1996.新疆塔里木盆地北部井下碎裂岩特征及其与油气关系.地质力学学报,2(3):65-67