张浩;陈刚;朱玉双;黄成刚;杨爽;斯扬;李雪;薛钊;

• 1:西北大学大陆动力学国家重点实验室
• 2:西北大学地质学系
• 3:中国石油天然气集团公司油藏描述重点实验室
• 4:中国地质大学(北京)地球科学与资源学院

摘要(Abstract)：

通过岩心及微观岩石学特征、结构特征、微量元素和碳氧同位素地球化学特征的综合研究,首次在柴达木盆地英西地区发现了一种罕见的热液改造型白云岩储集层,但热液改造程度不强,主要包括以下几个方面:1主要储集层较为致密,主要发育泥晶结构的铁白云石和方解石,偶见钠长石、黄铁矿、重晶石和天青石等热液矿物;2碳酸盐矿物中富含FeO、MnO等,其平均质量分数分别为4.112%和0.186%,显著高于本区准同生交代成因白云石中铁锰含量,且钙、镁含量也有所升高,反映了热液流体为富含Ca~(2+),Fe~(2+),Sr~(2+),Mn~(2+)和少量Mg~(2+)等多种离子的碱性热卤水;3ΣREE具有较大的变化范围且总量较高,稀土元素配分模式具有明显的Eu负异常,代表了湖泊环境特有的热流体稀土元素组成特征,形成于偏碱性的深湖热卤水还原环境;4δ18OPDB变化范围为-6.8‰~-3.6‰,平均值为-5.2‰,介于热液白云岩和准同生交代成因白云岩之间,显示了英西地区渐新统白云岩在准同生交代成因基础上受到了一定程度的热液改造。裂缝的发育程度和与热液通道的距离远近不同而使得样品的改造程度存在一定的差异性。综上所述,热液改造型白云岩储集层的首次发现开拓了柴达木盆地英西地区深层致密油气勘探的新视野,这一研究成果对英西深层寻找优质"甜点"储层具有重要指导意义。

关键词(KeyWords)： 热液白云岩;晶间孔;碳氧同位素;英西地区;柴达木盆地

Abstract:

Keywords:

基金项目(Foundation): 中国地质调查局油气资源调查课题(1212011220761-03)

作者(Author): 张浩;陈刚;朱玉双;黄成刚;杨爽;斯扬;李雪;薛钊;

Email:

参考文献(References)：

• [1]Bustillo M A,Arribas M E,Bustillo M.Dolomitization and silicification in low-energy lacustrine carbonates(Paleogene,Madrid Basin,Spin)[J].Sedimentary Geology,2002,151(1/2):107-126.
• [2]Tueher M E,Wright V P.Carbonate sedimentology[M].Oxford:Blackwell Scientific Publications,1990.
• [3]Alsharhan A S,Nairn A E M.Sedimentary basins and petroleum geology of the Middle East[M].Amsterdam:Elsevier Science,1997:1-942.
• [4]金民东,曾伟,谭秀成,等.四川磨溪—高石梯地区龙王庙组滩控岩溶型储集层特征及控制因素[J].石油勘探与开发,2014,41(6):650-660.
• [5]贾承造,邹才能,李建忠,等.中国致密油评价标准、主要类型、基本特征及资源前景[J].石油学报,2012,33(3):343-350.
• [6]袁剑英,黄成刚,曹正林,等.咸化湖盆白云岩碳氧同位素特征及古环境意义:以柴西地区渐新统下干柴沟组为例[J].地球化学,2015,44(3):254-266.
• [7]黄成刚,袁剑英,吴梁宇,等.湖相白云岩成因模式及研究方法探讨[J].岩性油气藏,2016,28(2):7-15.
• [8]黄思静,张雪花,刘丽红,等.碳酸盐岩成岩作用研究现状与前瞻[J].地学前缘,2009,16(5):219-231.
• [9]贺训云,寿建峰,沈安江,等.白云岩地球化学特征及成因:以鄂尔多斯盆地靖西马五段中组合为例[J].石油勘探与开发,2014,41(3):375-384.
• [10]黄正良,包洪平,任军峰,等.鄂尔多斯盆地南部奥陶系马家沟组白云岩特征及成因机理分析[J].现代地质,2011,25(5):925-930.
• [11]赵俊兴,陈洪德,张锦泉,等.鄂尔多斯盆地中部马五段白云岩成因机理研究[J].石油学报,2005,26(5):38-41,47.
• [12]苏中堂,陈洪德,徐粉燕,等.鄂尔多斯盆地马家沟组白云岩地球化学特征及白云岩化机制分析[J].岩石学报,2011,27(8):2230-2238.
• [13]赵卫卫,王宝清.鄂尔多斯盆地苏里格地区奥陶系马家沟组马五段白云岩的地球化学特征[J].地球学报,2011,32(6):681-690.
• [14]付金华,王宝清,孙六一,等.鄂尔多斯盆地苏里格地区奥陶系马家沟组白云石化[J].石油实验地质,2011,33(3):266-273.
• [15]朱东亚,金之钧,胡文瑄.塔北地区下奥陶统白云岩热液重结晶作用及其油气储集意义[J].中国科学:地球科学,2010,40(2):156-170.
• [16]Lavoie D,Morin C.Hydrothermal dolomitization in the Lower Silurian Sayabec formation in northern Gaspé-Matapédia(Québec):Constraint on timing of porosity and regional significance for hydrocarbon reservoirs[J].Bull.Can.Petrol.Geol.,2004,52:256-269.
• [17]Lavoie D,Chi G,Brennan-Alpert P,et al.Hydrothermal dolomitization in the lower Ordovician Romaine formation of the Anticosti basin:Significance for hydrocarbon exploration[J].Bull.Can.Petrol.Geol.,2005,53:454-472.
• [18]Wierzbicki R,Dravis J J,Al-Aasm I,et al.Burial dolomitization and dissolution of Upper Jurassic Abenaki platform carbonates,Deep Panuke reservoir,Nova Scotia,Canada[J].Am.Assoc.Petrol.Geol.Bull.,2006,90:1843-1861.
• [19]Hurley N F,Budros R.Albion-scipio and stony point fieldsUSA Michigan Basin[C]∥Beaumont E A,Foster N H.Stratigraphic Traps 1,AAPG Treatise of Petroleum Geology,Atlas of Oil and Gas Fields.Tulsa:American Association of Petroleum Geologists,1990:1-38.
• [20]Luczaj J A,Harrison III W B,Williams N S.Fractured hydrothermal dolomite reservoirs in the Devonian Dundee Formation of the central Michigan Basin[J].Am.Assoc.Petrol.Geol.Bull.,2006,90:1787-1801.
• [21]Smith L B.Origin and reservoir characteristics of Upper Ordovician Trenton-Black River hydrothermal dolomite reservoirs in New York[J].Am.Assoc.Petrol.Geol.Bull.,2006,90:1691-1718.
• [22]Wilkinson J J,Earls G.A high temperature hydrothermal origin for black dolomite matrix breccias in the Irish Zn-Pb orefield[J].Mineral.Mag.,2000,64:1017-1036.
• [23]Huang Chenggang,Zhao Fan,Yuan Jianying,et al.The characteristics of dolomite reservoir in saline lacustrine Basin,Qaidam,China[J/OL].Carbonates and Evaporites,2015,30(3).DOI:10.1007/s13146-015-0267-0
• [24]Yuan Jianying,Huang Jianying,Zhao Fan,et al.Carbon and oxygen Isotopic composition,and palaeoenvironmental significance of Saline Lacustrine Dolomite from the Qaidam Basin,Western China[J/OL].Journal of Petroleum Science and Engineering,2015,135(11):596-607.Doi:10.1016/j.petrol.2015.10.024
• [25]黄成刚,袁剑英,田光荣,等.柴西地区渐新统湖相白云岩储层地球化学特征及形成机理[J].地学前缘,2016,23(3):230-242.
• [26]袁剑英,黄成刚,夏青松,等.咸化湖盆碳酸盐岩储层特征及孔隙形成机理:以柴西地区渐新统下干柴沟组为例[J].地质论评,2016,62(1):111-126.
• [27]吴丽荣,黄成刚,袁剑英,等.咸化湖盆混积岩中双重孔隙介质及其油气储集意义[J].地球科学与环境学报,2015,37(2):59-67.
• [28]Zhao Fan,He Wenyuan,Huang Chenggang,et al.Saline fluid interaction experiment in clastic reservoir of lacustrine basin[J/OL].Carbonates and Evaporites,2016,31(3).Doi:10.1007/s13146-016-0289-2
• [29]黄成刚,袁剑英,曹正林,等.咸化湖盆碎屑岩储层中铁白云石的溶蚀作用模拟实验研究[J].石油实验地质,2014,36(5):650-655.
• [30]付锁堂,张道伟,薛建勤,等.柴达木盆地致密油形成的地质条件及勘探潜力分析[J].沉积学报,2013,31(4):672-682.
• [31]毛玲玲,伊海生,季长军,等.柴达木盆地新生代湖相碳酸盐岩岩石学及碳氧同位素特征[J].地质科技情报,2014,33(1):41-48.
• [32]伊海生,林金辉,周恳恳,等.青藏高原北部新生代湖相碳酸盐岩碳氧同位素特征及古环境意义[J].古地理学报,2007,9(3):303-312.
• [33]文华国,郑荣才,Qing Hairuo,等.青藏高原北缘酒泉盆地青西凹陷白垩系湖相热水沉积原生白云岩[J].中国科学:地球科学,2014,44(4):591-604.
• [34]周传明,张俊明,李国祥,等.云南永善肖滩早寒武世早期碳氧同位素记录[J].地质科学,1997,32(2):201-211.
• [35]Dehler C M,Elrick M,Bloch J D,et al.High-resolutionδ13 C stratigraphy of Chuar Group(ca 770-742Ma)Grand Canyon:Implications for Mid-Neoproterozoic climate change[J].Geol.Soc.Am.Bull.,2005,117(1/2):32-45.
• [36]Le GuerrouéE,Allen P A,Crozzi A.Chemostratigraphic and sedimentological framework of the largest negative carbon isotopic excursion in Earth History:The Neoproterozoic Shuram formation(Nafun Group,Oman)[J].Precamb.Res.,2006,146(1):68-92.
• [37]国家能源局.中华人民共和国石油天然气行业标准SY/T6285-2011-油气储层评价方法[S].北京:石油工业出版社,2011:2.
• [38]韩吟文,马振东.地球化学[M].北京:地质出版社,2003:62,133.
• [39]Yuan Jianying,Huang Chenggang,Zhao Fan,et al.Geochemical characteristics of Eocene dolomite in the saline lacustrine basin,Qaidam,China[J/OL].Carbonates and Evaporites,2016,31(3).Doi:10.1007/s13146-016-0315-4
• [40]Taylor R,Mclenan S M.The continental crust:Its composition and evolution[M].London:Blackwell,1985:57-72.
• [41]Sun S S,McDonough W F.Chemical and isotopic systematics of oceanic basalts:Implications for mantle composition and processes[C]∥Sunders A D,Norry M J.Mamatism in the Ocean Basin.[S.l.]:London Geological Society Special Publications,1989,42:313-345.
• [42]Humphrisi S E,Bach W.On the Sr isotope and REE compositions of anhydrites from the TAG seafloor hydrothermal system[J].Geochim.Cosmochim.Acta,2005,69:1511-1525.
• [43]Sugitani K,Yamashita F,Nagaoka T,et al.Geochemistry and sedimentary petrology of Archean clastic sedimentary rocks at Mt.Goldsworthy,Pilbara Craton,Western Australia:Evidence for the early evolution of continental crust and hydrothermal alteration[J].Precamb.Res.,2006,147:124-147.
• [44]王春连,刘成林,徐海明,等.江陵凹陷古新世盐湖沉积碳酸盐碳氧同位素组成及其环境意义[J].地球学报,2013,34(5):567-576.
• [45]Gasparrinia M,Bechstadta T,Bonib M.Massive hydrothermal dolomites in the southwestern Cantabrian Zone(Spain)and their relation to the Late Variscan evolution[J].Mar.Petrol.Geol.,2006,23(5):543-568.
• [46]Lapponi F,Bechstaedt T,Boni M,et al.Hydrothermal dolomitization in a complex geodynamic setting(Lower Palaeozoic,northern Spain)[J].Sedimentology,2014,61(2):411-443.