准噶尔盆地红车断裂带结构与成藏差异性分析
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摘要
红车断裂带中断裂十分发育,体系复杂,且主断裂延伸长,空间上不同部位断裂特征及控藏作用差异明显.利用测井、岩心、高精度地震数据体资料,根据断裂性质、组合样式及活动强度差异性等在平面上将红车断裂分为南北两段,北段主要发育逆断裂,南段主要发育走滑断裂;在剖面上分为上下两层断裂体系,上层为张性断裂体系,下层为压性断裂体系.红车断裂带深部断裂结构发育,成岩胶结作用强.对流体包裹体及裂缝胶结程度研究表明,红车断裂深部早期封闭性较差,但随成岩胶结作用进行,北段封闭性逐渐变好.断裂带浅部为砂泥岩互层,断裂结构不发育.利用断层泥比率、断裂带泥质含量、断面正应力及紧闭指数评价其封闭性,显示浅部封闭性在不同时期变化较大:白垩纪早期南段好于北段,古近纪中晚期—新近纪早期北段好于南段.红车断裂带北段油气比南段更为丰富,在北段为阶梯状成藏模式,南段为"花状"成藏模式.
Fractures in the Hongche fault belt are highly developed with complex system and a long extension of major fault. There are obvious differences in the fault characteristics and reservoir-forming control in different spatial parts.Based on the logging,core and high-precision 3 D seismic data,according to the differences in fault property,combination style and activity intensity,the Hongche fault belt,in plane view,can be divided into two segments of north and south which are dominated by reverse and strike-slip faults respectively;while in profile,divided into upper extension and lower compression fault systems. The fault structure is developed in deep with strong cementation. The study on the fluid inclusions and cementation degree of fractures indicate that the sealing capacity of deep fault is poor in the early stage,yet that in the north getting better with the cementation process. The fracture is undeveloped in the sand-mudstone interbedded shallow part of the fault belt. The results of SGR,Rm,F and IFTsuggest that the sealing of shallow part vary greatly in different periods. Specifically, the sealing of north segment is better than that of south in Early Cretaceous, while the case is the opposite during Middle and Late Paleogene-Early Neogene. The reservoir in the north is more abundant than that in the south,corresponding to ladder-like and flowerlike accumulation models separately.
Fractures in the Hongche fault belt are highly developed with complex system and a long extension of major fault. There are obvious differences in the fault characteristics and reservoir-forming control in different spatial parts.Based on the logging,core and high-precision 3 D seismic data,according to the differences in fault property,combination style and activity intensity,the Hongche fault belt,in plane view,can be divided into two segments of north and south which are dominated by reverse and strike-slip faults respectively;while in profile,divided into upper extension and lower compression fault systems. The fault structure is developed in deep with strong cementation. The study on the fluid inclusions and cementation degree of fractures indicate that the sealing capacity of deep fault is poor in the early stage,yet that in the north getting better with the cementation process. The fracture is undeveloped in the sand-mudstone interbedded shallow part of the fault belt. The results of SGR,Rm,F and IFTsuggest that the sealing of shallow part vary greatly in different periods. Specifically, the sealing of north segment is better than that of south in Early Cretaceous, while the case is the opposite during Middle and Late Paleogene-Early Neogene. The reservoir in the north is more abundant than that in the south,corresponding to ladder-like and flowerlike accumulation models separately.
引文
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[27]曹剑,胡文瑄,姚素平,等.准噶尔盆地西北缘油气成藏演化的包裹体地球化学研究[J].地质论评,2006,52(5):700-707.
[28]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.
[29]张新顺,王建平,李亚晶,等.断层封闭性研究方法评述[J].岩性油气藏,2013,25(2):123-128.
[30]田辉,查明,石新璞,等.断层紧闭指数的计算及其地质意义[J].新疆石油地质,2003,24(6):530-532.
[31]王卓超,叶加仁.准噶尔盆地西北缘车拐地区侏罗系成藏动力学模拟[J].地质科技情报,2010,29(2):63-67.
[32]程亮,关利军,王振奇,等.红山嘴地区三叠系油气成藏主控因素[J].断块油气田,2008,15(6):28-31.
[2]陈轩,张昌民,张尚锋,等.准噶尔盆地红车断裂带岩性地层油气藏勘探新思路[J].石油与天然气地质,2010,31(4):420-427.
[3]石昕,张立平,何登发,等.准噶尔盆地西北缘油气成藏模式分析[J].天然气地球科学,2005,16(4):460-463.
[4]陈世加,冉乙钧,路俊刚,等.红车断裂带断层封闭性的地球化学研究[J].西南石油大学学报:自然科学版,2008,30(1):21-24.
[5]甘学启,姜懿洋,秦启荣,等.红车断裂带石炭系火山岩油藏储层特征[J].特种油气藏,2011,18(2):45-47.
[6]Wu K Y,Paton D,Zha M.Unconformity structures controlling stratigraphic reservoirs in the north-west margin of Junggar basin,North-west China[J].Frontiers of Earth Science,2013,7(1):55-64.
[7]Zhao Q,Wang H Y,Liu D X,et al.Oil sands forming model of the northwest edge of the Junggar Basin,China[J].Advanced Materials Research,2015,1092/1093:1430-1435.
[8]Labaume P,Moretti I.Diagenesis-dependence of cataclastic thrust fault zone sealing in sandstones:Example from the Bolivian SubAndean Zone[J].Journal of Structural Geology,2001,23(11):1659-1675.
[9]Pluymakers A M H,Spiers C J.Compaction creep of simulated anhydrite fault gouge by pressure solution:Theory V.Experiments and implications for fault sealing[J].Geological Society,London,Special Publications,2015,409(3):457-467.
[10]Agosta F,Prasd M,Aydin A.Physical properties of carbonate fault rocks,Fucino Basin(Central Italy):Implications for fault seal in platform carbonates[J].Geofluids,2007,7(1):19-32.
[11]洪峰,宋岩,余辉龙,等.柴达木盆地北缘典型构造断层封闭性与天然气成藏[J].石油学报,2002,23(2):11-15.
[12]吕延防,王伟,胡欣蕾,等.断层侧向封闭性定量评价方法[J].石油勘探与开发,2016,43(2):310-316.
[13]隋风贵.准噶尔盆地西北缘构造演化及其与油气成藏的关系[J].地质学报,2015,89(4):779-793.
[14]何登发,陈新发,况军,等.准噶尔盆地石炭系油气成藏组合特征及勘探前景[J].石油学报,2010,31(1):1-11.
[15]范存辉,秦启荣,袁云峰,等.红车断裂带石炭系构造特征及裂缝发育模式[J].特种油气藏,2010,17(4):47-49.
[16]潘建国,郝芳,谭开俊,等.准噶尔盆地红车地区火山岩储层特征及主控因素[J].石油地质与工程,2007,21(5):1-4.
[17]严世帮,胡望水,李瑞升,等.准噶尔盆地红车断裂带同生逆冲断裂特征[J].岩性油气藏,2008,20(1):64-68.
[18]姚卫江,党玉芳,张顺存,等.准噶尔盆地西北缘红车断裂带石炭系成藏控制因素浅析[J].天然气地球科学,2010,21(6):917-923.
[19]吴孔友,刘波,刘寅,等.准噶尔盆地中拐凸起断裂体系特征及形成演化[J].地球科学与环境学报,2017,39(3):406-418.
[20]邢翔,胡望水,袁惠君,等.准噶尔盆地西北缘红-车断裂带断裂特征初步研究[J].石油天然气学报,2009,31(5):213-215.
[21]付广,殷勤,杜影.不同填充形式断层垂向封闭性研究方法及其应用[J].大庆石油地质与开发,2008,27(1):1-5.
[22]Antonellini M,Aydin A.Effect of faulting on fluid flow in porous sandstones:Petro-physical properties[J].AAPG Bulletin,1994,78(3):355-377.
[23]Knipe R J.Juxtaposition and seal diagrams to help analyze fault seals in hydrocarbon reservoirs[J].AAPG,1997,81(2):187-195.
[24]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):570-578.
[25]Liu Y,Wu K Y,Wang X,et al.Geochemical characteristics of fault core and damage zones of the Hong-Che Fault Zone of the Junggar Basin(NW China)with implications for the fault sealing process[J].Journal of Asian Earth Sciences,2017,143:141-155.
[26]沈扬,贾东,赵宏亮,等.准噶尔盆地西部车排子凸起新近系沙湾组成藏体系与富集规律[J].地质通报,2010,29(4):581-588.
[27]曹剑,胡文瑄,姚素平,等.准噶尔盆地西北缘油气成藏演化的包裹体地球化学研究[J].地质论评,2006,52(5):700-707.
[28]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.
[29]张新顺,王建平,李亚晶,等.断层封闭性研究方法评述[J].岩性油气藏,2013,25(2):123-128.
[30]田辉,查明,石新璞,等.断层紧闭指数的计算及其地质意义[J].新疆石油地质,2003,24(6):530-532.
[31]王卓超,叶加仁.准噶尔盆地西北缘车拐地区侏罗系成藏动力学模拟[J].地质科技情报,2010,29(2):63-67.
[32]程亮,关利军,王振奇,等.红山嘴地区三叠系油气成藏主控因素[J].断块油气田,2008,15(6):28-31.