准噶尔西北缘中拐地区红车断裂带胶结封闭作用
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摘要
中拐地区是准噶尔盆地一个重要的油气富集区,区内断裂带发育,断层封闭性对油气成藏有重要影响。采用普通薄片、扫描电镜、流体包裹体等分析测试技术对断裂内部成岩胶结物类型及胶结特征进行了研究。碳氧同位素分析表明,该区断裂带主要经历了三叠纪中晚期、早中白垩世、古近纪中晚期至新近纪早期3期流体活动,三叠纪中晚期和早中白垩世的热液流体与油气藏为"边充注、边胶结",古近纪中晚期至新近纪早期的流体则主要起到胶结封闭作用。断裂带胶结作用影响范围最大达百米,断层越大胶结物越发育,胶结封闭作用越强。综合断裂带结构划分、胶结物类型及影响因素分析、流体活动期次及流体来源等多方面研究成果,提出了断裂成岩胶结封闭作用机理,为下步勘探目标区优选提供了理论依据。
Zhongguai area in Junggar Basin is an important oil and gas enrichment zone,the faults in the region are well developed,the fault sealing property possesses important influence on the hydrocarbon accumulation. With the help of the analyzing and testing techniques such as using conventional thin section,scanning electron microscopy and fluid inclusion and so on,the diagenetic cement types and cementation characteristics within the fractures were studied. The carbon and oxygen isotope analyzed results show that the fluid activities in the fault zones of the area mainly experienced three periods: Middle-Late Triassic period,Early-Middle Cretaceous period,from Middle-Late Palaeogene to Early Neogene period,in the former two periods,the hydrothermal fluid filled and cemented the petroleum reservoir at the same time,whereas the sealing and cementing actions were mainly played for the liquid in the latter two periods. The impacted cementation range of the fault zone can reach up to a hundred meters,and the larger the fault is,the stronger the cementing-sealing effects will be. By means of the combined study results in many aspects i. e. the structural division of the fault zone,the type of the cement,the influencing factors,the fluid activities period and the fluid source,the cementing-sealing mechanisms of the fracture diagenesisare proposed,thus the theoretical evidences for the optimization of the next exploration target area ares provided.
Zhongguai area in Junggar Basin is an important oil and gas enrichment zone,the faults in the region are well developed,the fault sealing property possesses important influence on the hydrocarbon accumulation. With the help of the analyzing and testing techniques such as using conventional thin section,scanning electron microscopy and fluid inclusion and so on,the diagenetic cement types and cementation characteristics within the fractures were studied. The carbon and oxygen isotope analyzed results show that the fluid activities in the fault zones of the area mainly experienced three periods: Middle-Late Triassic period,Early-Middle Cretaceous period,from Middle-Late Palaeogene to Early Neogene period,in the former two periods,the hydrothermal fluid filled and cemented the petroleum reservoir at the same time,whereas the sealing and cementing actions were mainly played for the liquid in the latter two periods. The impacted cementation range of the fault zone can reach up to a hundred meters,and the larger the fault is,the stronger the cementing-sealing effects will be. By means of the combined study results in many aspects i. e. the structural division of the fault zone,the type of the cement,the influencing factors,the fluid activities period and the fluid source,the cementing-sealing mechanisms of the fracture diagenesisare proposed,thus the theoretical evidences for the optimization of the next exploration target area ares provided.
引文
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[13]王圣柱,林会喜,张奎华,等.准噶尔盆地北缘哈山构造带油气输导系统研究[J].特种油气藏,2015,22(6):30-34.WANG Shengzhu,LIN Huixi,ZHANG Kuihua,et al. Study on hydrocarbon transport system in Kazan Tectonic Zone at North Margin of Junggar Basin[J]. Special Oil&Gas Reservoirs,2015,22(6):30-34.
[14]滕建彬.流体—岩石化学作用控制的成岩相划分与评价:以江家店—瓦屋地区沙三段下亚段为例[J].油气地质与采收率,2017,24(3):1-9.TENG Jianbin. Division and evaluation of diagenetic facies of reservoirs in the control of fluid-rock chemical interaction:A case study of the Lower Es3 in Jiangjiadian-Wawu area[J].Petroleum Geology and Recovery Efficiency, 2017, 24(3):1-9.
[15]孙贺,肖益林.流体包裹体研究:进展、地质应用及展望[J].地球科学进展,2009,24(10):1105-1121.SUN He,XIAO Yilin. Fluid inclusions:Latest development,geological applications and prospect[J]. Advances in Earth Sciences,2009,24(10):1105-1121.
[16] WALDERHAUG O,FJELDSKAAR W. History of hydrocarbon emplacement in the Oseberg Field determined by fluid inclusion microthermometry and temperature modelling[C]//Basin modelling:Advances and applications,Norwegian Petroleum Society Special Publication,1993.
[17]张义杰.新疆准噶尔盆地断裂控油气规律研究[M].北京:中国石油大学出版社,2002.ZHANG Yijie. Study on oil and gas control of faults in Junggar Basin,Xinjiang[M]. Beijing:China University of Petroleum Press,2002.
[18]曹剑,胡文瑄,张义杰,等.准噶尔盆地红山嘴—车排子断裂带含油气流体活动特点地球化学研究[J].地质论评,2005,51(5):591-599.CAO Jian,HU Wenxuan,ZHANG Yijie,et al. Geoehemieal analysis on petroleum fluid activity in the Hongshanzui-Chepaizi Fault Zone,Junggar Basin[J]. Geological Review,2005,51(5):591-599.
[19]李振华,邱隆伟,孙宝强,等.准噶尔盆地中拐地区佳木河组流体包裹体特征及成藏期次划分[J].天然气地球科学,2013,24(5):931-939.LI Zhenhua,QIU Longwei,SUN Baoqiang,et al. Characteristics of fluid inclusion and charging events of natural gas in Permian Jiamuhe Formation of Zhongguai area, Junggar Basin[J].Natural Gas Geoscience,2013,24(5):931-939.
[20]王千军.准噶尔盆地车排子地区沙湾组“断—毯”输导性量化评价[J].大庆石油地质与开发,2016,35(6):15-20.WANG Qianjun. Quantitative assessment of the fault-sandbody transportability for Shawan-Formation in Chepaizi area of Junggar Basin[J]. Petroleum Geology&Oilfield Development in Daqing,2016,35(6):15-20.
[21]徐春华,王亚琳.基于无机二氧化碳成藏期探讨博兴断层启闭性:兼论断层活动性与启闭性的关系[J].油气地质与采收率,2016,23(5):30-36.XU Chunhua, WANG Yalin. Discussion on the opening and sealing properties of the Boxing Fault based on the accumulation time of inorganic CO2:Also discussing the relationship between fault activity and sealing property[J]. Petroleum Geology and Recovery Efficiency,2016,23(5):30-36.
[22]沈忠山,何欣,梅梅,等.松辽盆地杏树岗北部油田断裂带地质特征[J].大庆石油地质与开发,2016,35(3):22-25.SHEN Zhongshan,HE Xin,MEI Mei,et al. Geological characteristics of the faulted zone in North Xingshugang Oilfield of Songliao Basin[J]. Petroleum Geology&Oilfield Development in Daqing,2016,35(3):22-25.
[23]王雪峰.不同运移方向下断裂密集带聚集油气的差异性[J].大庆石油地质与开发,2014,33(3):25-29.WANG Xuefeng. Deference of the accumulated oil and gas in the fault cluster belts in different migration directions[J]. Petroleum Geology&Oilfield Development in Daqing, 2014, 33(3):25-29.
[24] HOEFS J. Stable isotope geochemistry[M]. New York:Springer-Verlag Berlin Heidelberg,2009.
[25] KAUFMAN A J,KNOLL A H. Neoproterozoic variations in the Cisotopic composition of sea water:Stratigraphic and biogeochemical implications[J]. Precambrian Res,1995,73:27-49.
[26]王泽鹏,夏勇,宋谢炎,等.太平洞—紫木凼金矿区同位素和稀土元素特征及成矿物质来源探讨[J].矿物学报,2012,32(1):93-100.WANG Zepeng,XIA Yong,SONG Xieyan,et al. Isotopes and REE characteristic and ore-forming materials source of the Taipingdong-Zimudang gold deposit[J]. Acta Mineralogica Sinica,2012,32(1):93-100.
[2]吴智平,陈伟,薛雁,等.断裂带的结构特征及其对油气的输导和封堵性[J].地质学报,2010,84(4):571-576.WU Zhiping,CHEN Wei,XUE Yan,et al. Structural characteristics of faulting zone and its ability in transporting and sealing oil and gas[J]. Acta Geologica Sinica,2010,84(4):571-576.
[3]吴孔友,王绪龙,崔殿.南白碱滩断裂带结构特征及流体作用[J].煤田地质与勘探,2012,40(4):6-11.WU Kongyou,WANG Xulong,CUI Dian. Structural characteristics and fluid effects of Nanbaijiantan Fault Zone[J]. Coal Geology&Exploration,2012,40(4):6-11.
[4]阎福礼,贾东,卢华复,等.东营凹陷油气运移的地震泵作用[J].石油与天然气地质,1999,20(4):295-298.YAN Fuli,JIA Dong,LU Huafu,et al. Seismic pumping mechanism of hydrocabon migration in Dongying Depression[J]. Oil&Gas Geology,1999,20(4):295-298.
[5]华保钦.构造应力场、地震泵和油气运移[J].沉积学报,1995,13(2):77-85.HUA Baoqin. Stress field,seismic pumping and oil-gas migration[J]. Acta Sedimentologica Sinica,1995,13(2):77-85.
[6]刘立,于均民,孙晓明.热对流成岩作用的基本特征与研究意义[J].地球科学进展,2000,15(5):583-585.LIU Li,YU Junmin,SUN Xiaoming,et al. Basic characteristics of thermal convection diagenesis and its research significance[J].Advance in Earth Sciences,2000,15(5):583-585.
[7] HOOPER E C D. Fluid migration along growth faults in compacting sediments[J]. Petroleum Geology,2010,14(S1):161-180.
[8]黄思静,黄培培,王庆东,等.胶结作用在深埋藏砂岩孔隙保存中的意义[J].岩性油气藏,2007,19(3):7-13.HUANG Sijing,HUANG Peipei,WANG Qingdong,et al. The significance of cementation in porosity preservation in deep-buried sandstones[J]. Lithologic Reservoirs,2007,19(3):7-13.
[9]郭长敏,施振声.歧口凹陷沙一段砂岩成岩作用及孔隙演化[J].岩性油气藏,2009,21(1):34-38.GUO Changmin,SHI Zhensheng. Diagenesis and pore evolution of the first member of Shahejie Formation in Qikou Sag[J].Lithologic Reservoirs,2009,21(1):34-38.
[10]张敏,王正允,王丽云,等.靖边潜台南部地区马家沟组储集岩的成岩作用及成岩相[J].岩性油气藏,2009,21(1):27-33.ZHANG Min,WANG Zhengyun,WANG Liyun,et al. Diagenesis and diagenetic facies of reservoir rocks of Majiagou Formation in Southern Jingbian Tableland,Ordos Basin[J]. Lithologic Reservoirs,2009,21(1):27-33.
[11]张顺存,刘振宇,刘巍,等.准噶尔盆地西北缘克—百断裂下盘二叠系砂砾岩储层成岩相研究[J].岩性油气藏,2010,22(4):43-51.ZHANG Shuncun, LIU Zhenyu, LIU Wei, et al. Diagenesis facies of Permian sandy conglomerate reservoir in footwall of Kebai Fault in Northwestern Margin of Junggar Basin[J]. Lithologic Reservoirs,2010,22(4):43-51.
[12]王玉秀,官大勇,张宏国,等.郯庐走滑断裂带消逝端断裂特征与油气成藏[J].特种油气藏,2015,22(2):56-58.WANG Yuxiu,GUAN Dayong,ZHANG Hongguo,et al. Fracturing features and oil/Gas reservoir forming at the pinchout end of Tanlu Strike-slip Faulting Belt[J]. Special Oil&Gas Reservoirs,2015,22(2):56-58.
[13]王圣柱,林会喜,张奎华,等.准噶尔盆地北缘哈山构造带油气输导系统研究[J].特种油气藏,2015,22(6):30-34.WANG Shengzhu,LIN Huixi,ZHANG Kuihua,et al. Study on hydrocarbon transport system in Kazan Tectonic Zone at North Margin of Junggar Basin[J]. Special Oil&Gas Reservoirs,2015,22(6):30-34.
[14]滕建彬.流体—岩石化学作用控制的成岩相划分与评价:以江家店—瓦屋地区沙三段下亚段为例[J].油气地质与采收率,2017,24(3):1-9.TENG Jianbin. Division and evaluation of diagenetic facies of reservoirs in the control of fluid-rock chemical interaction:A case study of the Lower Es3 in Jiangjiadian-Wawu area[J].Petroleum Geology and Recovery Efficiency, 2017, 24(3):1-9.
[15]孙贺,肖益林.流体包裹体研究:进展、地质应用及展望[J].地球科学进展,2009,24(10):1105-1121.SUN He,XIAO Yilin. Fluid inclusions:Latest development,geological applications and prospect[J]. Advances in Earth Sciences,2009,24(10):1105-1121.
[16] WALDERHAUG O,FJELDSKAAR W. History of hydrocarbon emplacement in the Oseberg Field determined by fluid inclusion microthermometry and temperature modelling[C]//Basin modelling:Advances and applications,Norwegian Petroleum Society Special Publication,1993.
[17]张义杰.新疆准噶尔盆地断裂控油气规律研究[M].北京:中国石油大学出版社,2002.ZHANG Yijie. Study on oil and gas control of faults in Junggar Basin,Xinjiang[M]. Beijing:China University of Petroleum Press,2002.
[18]曹剑,胡文瑄,张义杰,等.准噶尔盆地红山嘴—车排子断裂带含油气流体活动特点地球化学研究[J].地质论评,2005,51(5):591-599.CAO Jian,HU Wenxuan,ZHANG Yijie,et al. Geoehemieal analysis on petroleum fluid activity in the Hongshanzui-Chepaizi Fault Zone,Junggar Basin[J]. Geological Review,2005,51(5):591-599.
[19]李振华,邱隆伟,孙宝强,等.准噶尔盆地中拐地区佳木河组流体包裹体特征及成藏期次划分[J].天然气地球科学,2013,24(5):931-939.LI Zhenhua,QIU Longwei,SUN Baoqiang,et al. Characteristics of fluid inclusion and charging events of natural gas in Permian Jiamuhe Formation of Zhongguai area, Junggar Basin[J].Natural Gas Geoscience,2013,24(5):931-939.
[20]王千军.准噶尔盆地车排子地区沙湾组“断—毯”输导性量化评价[J].大庆石油地质与开发,2016,35(6):15-20.WANG Qianjun. Quantitative assessment of the fault-sandbody transportability for Shawan-Formation in Chepaizi area of Junggar Basin[J]. Petroleum Geology&Oilfield Development in Daqing,2016,35(6):15-20.
[21]徐春华,王亚琳.基于无机二氧化碳成藏期探讨博兴断层启闭性:兼论断层活动性与启闭性的关系[J].油气地质与采收率,2016,23(5):30-36.XU Chunhua, WANG Yalin. Discussion on the opening and sealing properties of the Boxing Fault based on the accumulation time of inorganic CO2:Also discussing the relationship between fault activity and sealing property[J]. Petroleum Geology and Recovery Efficiency,2016,23(5):30-36.
[22]沈忠山,何欣,梅梅,等.松辽盆地杏树岗北部油田断裂带地质特征[J].大庆石油地质与开发,2016,35(3):22-25.SHEN Zhongshan,HE Xin,MEI Mei,et al. Geological characteristics of the faulted zone in North Xingshugang Oilfield of Songliao Basin[J]. Petroleum Geology&Oilfield Development in Daqing,2016,35(3):22-25.
[23]王雪峰.不同运移方向下断裂密集带聚集油气的差异性[J].大庆石油地质与开发,2014,33(3):25-29.WANG Xuefeng. Deference of the accumulated oil and gas in the fault cluster belts in different migration directions[J]. Petroleum Geology&Oilfield Development in Daqing, 2014, 33(3):25-29.
[24] HOEFS J. Stable isotope geochemistry[M]. New York:Springer-Verlag Berlin Heidelberg,2009.
[25] KAUFMAN A J,KNOLL A H. Neoproterozoic variations in the Cisotopic composition of sea water:Stratigraphic and biogeochemical implications[J]. Precambrian Res,1995,73:27-49.
[26]王泽鹏,夏勇,宋谢炎,等.太平洞—紫木凼金矿区同位素和稀土元素特征及成矿物质来源探讨[J].矿物学报,2012,32(1):93-100.WANG Zepeng,XIA Yong,SONG Xieyan,et al. Isotopes and REE characteristic and ore-forming materials source of the Taipingdong-Zimudang gold deposit[J]. Acta Mineralogica Sinica,2012,32(1):93-100.