长岭断陷深层储层包裹体特征与油气成藏过程

doi:10.11743/ogg20140504

摘要/Abstract

摘要：

成藏过程精细解剖是油气富集规律和选区评价研究的基础。通过流体包裹体的显微赋存状态描述、均一温度测定，指出烃类包裹体主要赋存在石英次生加大边和切穿加大边的微裂隙以及方解石胶结物中，均一化温度主频在130~150 ℃。成岩史与埋藏史分析表明随着烃源岩成熟度的增加，后期生成的高成熟度天然气向上运移，首先将低部位圈闭中的原油驱替到构造高部位的圈闭，形成现今SN189井和SN183井中的油藏，邻近生烃中心的SN115井储层中残余沥青正是这期原油裂解的产物。后期形成的天然气沿断层向上运移聚集，形成SN182井的天然气藏，该井的流体包裹体以天然气为主。因此，沿断层向上倾方向，液烃包体含量越来越少，天然气包裹体含量增多，现今构造高部位为油藏，低部位为气藏，油、气同源。长岭断陷的坳陷区和斜坡区的古构造、砂岩上倾尖灭和砂岩透镜体油气藏是天然气勘探的主要方向。

关键词: 流体包裹体, 油气成藏过程, 深层储层, 长岭断陷, 松辽盆地

Abstract:

Research on hydrocarbon accumulation process is the basis for studying hydrocarbon enrichment patterns and identifying favorable areas for petroleum exploration.Based on the microscopic description of fluid inclusion and analysis of homogenization temperature,hydrocarbon inclusions mainly occur in the secondary quartz overgrowth,microfractures crossing these overgrowth and calcite cement.The dominant frequency of homogeneous temperature was 130-150 ℃.The diagenetic history and burial history show that high maturity natural gas migrated upward with maturing of hydrocarbon source rock and displaced the oil accumulated in the lower traps into the higher traps,resulting in the formation of Well SN189 and Well SN183 accumulations.Residual asphalt in the Yingcheng Formation in Well SN115,which is near the hydrocarbon generation center,was the product of crude oil pyrolysis in this period.Natural gas generated during later period migrated upward along the fault and formed Well SN182 natural gas pool where the inclusions are mainly of natural gas.As a result,along the fault up-dip direction,the number of liquid hydrocarbon inclusions gradually decreases,while the number of natural gas inclusions gradually increases.Oil accumulated in the higher position,and gas accumulated in the lower parts.The oil and gas share the same hydrocarbon source.Up-dip pinchout sandstone and sandstone lens in the depression and slope area of Changling rift are the main targets for natural gas exploration.

Key words: fluid inclusion, hydrocarbon accumulation process, deep reservoir, Changling rift, Songliao Basin

中图分类号:

TE122.1

金晓辉,闫相宾,孙冬胜,等. 长岭断陷深层储层包裹体特征与油气成藏过程[J]. 石油与天然气地质, 2014, 35(5): 609-613. doi: 10.11743/ogg20140504 Jin Xiaohui,Yan Xiangbin,Sun Dongsheng,et al. Fluid inclusion characteristics and hydrocarbon accumulation process of deep reservoirs in Changling rift, Songliao Basin[J]. Oil & Gas Geology, 2014, 35(5): 609-613. doi: 10.11743/ogg20140504

参考文献

[1] Burruss R C.Hydrocarbon fluid inclusions in studies of diagenesis[C]//Hollister L S, Crawford M L.Short course in fluid inclusions:application to petrology.Mineralogical Association of Canada, 1981:138-156.
[2] Eadington P J, Hamilton P J, Bai G P.Fluid history analysis:a new concept for prospect evalution[J].Australian Petroleum Exploration Association Journal, 1991, 31(2):282-294.
[3] Karlsen D A, Nedkvitne T, Larter S R, et al.Hydrocarbon composition of authigenic inclusions:application to elucidation of petroleum reservoir filling history[J].Geochim Cosmochim Acta, 1993, 57(15):3641-3659.
[4] 周荔青, 金之钧.松辽盆地长岭断陷火山岩复式成油系统[M].北京:地质出版社, 2011:189-190. Zhou Liqing, Jin Zhijun.Volcanic rock multiple oil gas accumulation play in the Changling fault depression, Songgliao Basin[M].Beijing:Geological Publishing House, 2011:189-190.
[5] 王洪江, 吴聿元.松辽盆地长岭断陷火山岩天然气藏分布规律与控制因素[J].石油与天然气地质, 2011, 31(3) :360-367. Wang Hongjiang, Wu Yuyuan.Distribution patterns and controlling factors of volcanic gas pools in the Changling fault depression, the Songliao Basin[J].Oil & Gas Geology, 2011, 31(3) :360-367.
[6] 张斌.松辽盆地南部张强凹陷义县组火山岩储层特征及成藏规律[J].石油与天然气地质, 2013, 34(4):508-513. Zhang Bin.Characteristics and hydrocarbon accumulation patterns of volcanic rocks in the Yixian Formation Zhangqiang depression, sou-thern Songliao Basin[J].Oil & Gas Geology, 2013, 34(4):508-513.
[7] 胡纯心.长岭断陷构造特征及白垩纪以来的构造演化[J].石油与天然气地质, 2013, 34(2):230-233. Hu Chunxin.Structural characteristics and post-Cretaceous tectonic evolution of the Changling Rift[J].Oil & Gas Geology, 2013, 34(2) :230-233.
[8] 俞凯, 侯洪斌, 郭念发.松辽盆地南部断陷层石油天然气地质[M].北京:石油工业出版社, 2002:136-150. Yu Kai, Hou Hongbin, Guo Nianfa.Petroleum geology in southern fault depression Songgliao Basin[M].Beijing:Petroleum Industry Press, 2002:136-150.
[9] 吴聿元, 周荔青.松辽盆地主要断陷大中型油气田形成分布特征[J].石油实验地质, 2007, 29(3):7-12. Wu Yuyuan, Zhou Liqing, Formation and distribution features of large-medium oil & gas Fields in main fault depressions Songgliao Bain[J].Petroleum Geocogy & Experiment, 2007, 29(3):7-12.
[10] 闫相宾, 金晓辉, 李丽娜.松辽盆地长岭断陷火山活动与烃源岩成烃史分析[J].地质论评, 2009, 29(1):7-12. Yan Xiangbin, Jin Xiaohui, Li Lina.Volcanic activities and hydrocarbon-generating history in the Changling fault depression, Songgliao Basin[J].Geological Review, 2009, 29(1):7-12.
[11] 任战利.中国北方沉积盆地构造热演化史研究[M].北京:石油工业出版社, 1999:16-50. Ren Zhanli.The structural evolution history in Chinese northern sedimentary basin[M].Beijing:Petroleum Industry Press, 1999:16-50.
[12] 金晓辉, 闫相宾, 李丽娜.松辽盆地长岭断陷烃源岩特征与油源对比[J].西南石油大学学报(自然科学版), 2010, 32(6):53-57. Jin Xiaohui, Yan Xiangbin, Li Lina.Correlation of Source rock and oil geochemistry in Changling fault depression, Songliao Basin[J].Journal of Southwest Petroleum University, 2010, 32(6):53-57.
[13] 李明, 赵一民, 刘晓, 等.松辽盆地南部长岭凹陷油气富集区分布特征[J].石油勘探与开发, 2009, 36(4):413-418. Li Ming, Zhao Yimin, Liu Xiao, et al.Oil and gas enrichment zone distribution in the south part of Changling depression in Songliao basin[J].Petroleum Exploration and Development, 2009, 36(4):413-418.
[14] 周中毅, 潘长春.沉积盆地古地温测定方法及应用[M].广州:广州科技出版社, 1992:1-50. Zhuo Zhongyi, Pan Changchun.The measurement methods and app-liance to paleo-geothermal thermal history in sedimentation basin[M].Guanzhou:Guanzhou Science and Technology Press, 1992:1-50.
[15] Campbell A R, Robinson C S.Infrared fluid inclusion microther-mometry on coexisting wolframite and quartz[J].Economic Geology, 1987, 82(6) :1640-1645.
[16] 刘德汉.包裹体研究—盆地流体追踪的有利工具[J].地学前缘, 1995, 12, (3-4):149-154. Liu dehan, Fluid inclusions-a powerful instrument for Basin fluid tracing[J].Earth Science Frontiers, 1995, 12, (3-4):149-154.
[17] 金晓辉, 林壬子, 邹华耀, 等.松辽盆地徐家围子断陷火山活动期次与烃源岩演化[J].石油与天然气地质, 2005, 26(3):349-356. Jin Xiaohui, Lin Renzi, Zou Huayao, et al.Volcanic activities and evolution of depression, Songliao basin[J].Oil and Gas Geology, 2005, 26(3):349-356.
[18] Waples D W.Time and temperature in petroleum formation:application of Loptins method to petroleum exploration[J].AAPG Bulletin, 1980, 64(6):916-926.
[19] Sweeny 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.
[20] Hunt J M.Petroleum geochemistry and geology[M].New York:Freeman, 1995:16-28.