准噶尔盆地沙帐断褶带二叠系云质岩储层特征及成因分析
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摘要
云质岩储集层在准噶尔盆地为一套成因特殊、富含油气的储集层,属致密油勘探。以准噶尔盆地卡拉麦里山前凹陷沙帐断褶带二叠系平地泉组一段云质岩储层为研究对象,通过对岩石学、成岩作用、储集空间类型、粘土矿物二次鉴定及成因机理分析指出:沙帐断褶带云质岩按产状分为纹层状、均匀分布状、不规则层状、团块状和裂缝充填5种类型;白云岩化岩流体中镁离子主要来自火山玻璃脱玻化;大规模白云岩化母岩为凝灰岩、沉凝灰岩;邻区火山活动及后期火山凝灰质蚀变和成岩交代为云质岩储层形成的主要原因。HB2井在二叠系平地泉组一段云质岩中经酸化压裂获得工业油流,改写了长期以来"平一段只有烃源岩发育层段"的认识,证实沙帐断褶带发育有云质岩储层源储一体的致密油藏类型。
Dolomitic rock reservoir is a special origin and rich-hydrocarbon formation in Junggar Basin,which belongs to tight oil.Existing results all focus on Permian Fencheng formation located in northwest margin,and LuCaoGou formation located in eastern margin.it is studied little that the Permian PingDiQuan formatin of ShaZhang fault-fold belts in northeastern margin.Attributed by lithology,reservoir space and formation mechanism,the dolomitic rock of the PingDiQuan Formation is divided into 5 types lamina dolomitic rock,uniform distribution,irregular thin-bed,clumps and crackfilling.Mg2+ is mainly supplied from volcanic glass devitrification.The original rocks of the dolomitic rock are volcanic material(tuff),sedimentary tuff.The main formation mechanism is the procedure of Volcanic glass in the volcanic tuff material easily to take hydrolysis alteration.That well-HB2 obtaining Industrial oil flow by acid fracturing demonstrated that tight oil of source-reservoir-integration exist in dolomitic rock of the PingDiQuan Formation.ShaZhang fault-fold belts in Junggar Basin.
Dolomitic rock reservoir is a special origin and rich-hydrocarbon formation in Junggar Basin,which belongs to tight oil.Existing results all focus on Permian Fencheng formation located in northwest margin,and LuCaoGou formation located in eastern margin.it is studied little that the Permian PingDiQuan formatin of ShaZhang fault-fold belts in northeastern margin.Attributed by lithology,reservoir space and formation mechanism,the dolomitic rock of the PingDiQuan Formation is divided into 5 types lamina dolomitic rock,uniform distribution,irregular thin-bed,clumps and crackfilling.Mg2+ is mainly supplied from volcanic glass devitrification.The original rocks of the dolomitic rock are volcanic material(tuff),sedimentary tuff.The main formation mechanism is the procedure of Volcanic glass in the volcanic tuff material easily to take hydrolysis alteration.That well-HB2 obtaining Industrial oil flow by acid fracturing demonstrated that tight oil of source-reservoir-integration exist in dolomitic rock of the PingDiQuan Formation.ShaZhang fault-fold belts in Junggar Basin.
引文
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[18]朱国华.沉火山尘凝灰岩:一种赋存油气资源的重要岩类——以新疆北部中二叠统芦草沟组为例[J].海相油气地质,2014,19(1):1-7.
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[20]Broxton D E,Btsh D L.Warren R G.Distribution and chemistry of diagenetic minerals at Yucca mountain,Nye county,Nevada[J].Clays and Clay Minerals,1987,35(2):89-110.
(1)杨迪生,黄芸.卡拉麦里山前石炭系古前陆冲断带构造模式建立及勘探领域选择,2011
[2]李玉喜,张金川.我国非常规油气资源类型和潜力[J].国际石油经济,201 1(3):61-67.
[3]唐泽尧.从四川看鄂尔多斯盆地的碳酸盐岩储气层[J].天然气工业,1992,12(4):1-7.
[4]杨俊杰,谢庆邦,宋国初.鄂尔多斯盆地奥陶系风化壳古地貌成藏模式及气藏序列[J].天然气工业,1992,12(4):8-13.
[5]史基安.塔里木盆地西北缘震旦系和古生代白云岩成因及其储集性[J].沉积学报,1993,11(2):43-49.
[6]兰德L S.白云化作用[M].北京:石油工业出版社,1985.
[7]李凌,谭秀成,陈景山,等.塔中北部中下奥陶统鹰山组白云岩特征及成因[J].西南石油大学学报,2007,29(1):34-36
[8]柳益群,李红,朱玉双,等.白云岩成因探讨:新疆三塘湖盆地发现二叠系湖相喷流型热水白云岩[J].沉积学报,2010,28(5):861-866.
[9]李红,柳益群,朱玉双.新疆三塘湖盆地二叠系湖相白云岩形成机理初探[J].沉积学报,2007,25(1):75-81
[10]史基安,邹妞妞,鲁新川,等.准噶尔盆地西北缘二叠系云质碎屑岩地球化学特征及成因机理研究[J].沉积学报,2013,31(6):898-904.
[11]匡立春,唐勇,雷德文,等.准噶尔盆地二叠系咸化湖相云质岩致密油形成条件与勘探潜力[J].石油勘探与开发,2012,39(5):657.667.
[12]冯有良,张义杰,王瑞菊,等.准噶尔盆地西北缘风城组白云岩成因及油气富集因素[J].石油勘探与开发,2011,38(6):685-692.
[13]薛晶晶,孙靖,朱筱敏,等.准噶尔盆地二叠系风城组白云岩储集层特征及成因分析[J].现代地质,2012,26(4):755-761.
[14]张杰.乌尔禾.风城地区二叠系白云质岩类岩石学特征及成因分析[J].沉积学报,2012,30(5):859-867.
[15]周鹏.新疆吉木萨尔凹陷二叠系芦草沟组致密油储层特征及储层评价[D].西北大学硕士学位论文,2014.
[16]袁航难噶尔东北缘前陆冲断带构造特征与油气聚集[D].中国地质大学硕士学位论文,2010.
[17]周涛发,袁峰,杨文平,等.西准噶尔萨吾地区二叠纪火山活动规律[J].中国地质,2006,33(3):553-558.
[18]朱国华.沉火山尘凝灰岩:一种赋存油气资源的重要岩类——以新疆北部中二叠统芦草沟组为例[J].海相油气地质,2014,19(1):1-7.
[19]张丽霞,李培俊.微细沉积物中黏土矿物鉴定新方法[J].新疆石油地质,2012,32(4):491-492.
[20]Broxton D E,Btsh D L.Warren R G.Distribution and chemistry of diagenetic minerals at Yucca mountain,Nye county,Nevada[J].Clays and Clay Minerals,1987,35(2):89-110.
(1)杨迪生,黄芸.卡拉麦里山前石炭系古前陆冲断带构造模式建立及勘探领域选择,2011