1.Key Laboratory of Petroleum Resources Research,Chinese Academy of Sciences, Beijing.100029 2.Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing.100029 3.MOE Key Laboratory of Petroleum Engineering,China University of Petroleum(Beijing),Beijing.102249
Abstract：The Changxing Formation reservoir in northeastern Sichuan Basin is mainly composed of fine to medium sized crystalline dolomites,and some mud sized crystalline dolomites secondly. Observation of thin sections under cathodoluminescence reveals that the fine-medium sized crystalline dolomites and mud sized crystalline dolomites look very dark. Micro-probe analysis reveals that the Mg,Ca,Fe,Mn,Sr,Na and Ba content is constant from the core of the fine-medium sized crystalline dolomite crystals to their margins,thus it is speculated that the fine-medium sized crystalline dolomites are transformed from previous mud sized crystalline dolomites by recrystallization in penecontemporaneous period. The main factor controlling the recrystallization is the infiltration high-Mg brine caused by evaporation which provides new ideas for determining the reservoir distribution of dolomites in the study area.
Zhao Rui,Wu Yasheng,Qi Enguang et al. Geochemistry and origin of dolomites of the Upper PermianChangxing Formation in northeastern Sichuan Basin[J]. JOPC, 2014, 16(5): 747-760.
陈琪,胡文瑄,李庆,等. 2012. 川东北盘龙洞长兴组—飞仙关组白云岩化特征及成因[J]. 石油与天然气地质,33(1):84-93. 陈永权,周新源,杨海军. 2010. 塔里木盆地塔中地区上寒武统3种截面特征白云岩的岩石地球化学特征与成因研究[J]. 沉积学报,28(2):209-218. 党录瑞,郑荣才,郑超,等. 2011. 川东地区长兴组白云岩储集层成因与成岩系统[J]. 地质与勘探,31(11):47-52. 范嘉松,吴亚生. 2002. 川东二叠纪生物礁的再认识[J]. 石油与天然气地质,23(1):12-18. 高翔,王平康,李秋英. 2010. 松科1井嫩江组湖相含铁白云石的准确定名和矿物学特征[J]. 岩石矿物学杂志,29(2):213-218. 郭建华,沈昭国. 1994. 塔北东段下奥陶统白云石化作用[J]. 石油与天然气地质,15(1):51-59. 郭彤楼. 2011. 元坝气田长兴组储集层特征与形成主控因素研究[J]. 岩石学报,27(8):2381-2391. 顾炎武,李国蓉,李宇翔,等. 2009. 塔中地区中下奥陶统白云岩特征及成因[J]. 天然气技术,3(1):19-22. 韩征,余素玉. 1990. 滇西宁蒗—丽江地区泥盆系白云岩的成因[J]. 沉积学报,2(8):51-58. 何凯,朱井泉,由雪莲,等. 2013. 塔里木盆地柯坪地区上寒武统表生溶蚀型藻格架白云岩的地球化学特征及意义[J]. 古地理学报,15(1):77-94. 黄思静,吕杰,兰叶芳,等. 2011. 四川盆地西部中二叠统白云岩/石的主要结构类型:兼论其与川东北上二叠统—三叠系白云岩/石的差异[J]. 岩石学报,27(8):2253-2262. 黄思静,卿海若,胡作维,等. 2008. 川东三叠系飞仙关组碳酸盐岩的阴极发光特征与成岩作用[J]. 地球科学: 中国地质大学学报,33(1):26-33. 黄思静,Qing H R,裴昌蓉,等. 2006. 川东三叠系飞仙关组白云岩锶含量、锶同位素组成与白云石化流体[J]. 岩石学报,22(8):2123-2132. 黄思静,石和,毛晓冬,等. 2003. 早古生代海相碳酸盐的成岩蚀变性及其对海水信息的保存性[J]. 成都理工大学学报(自然科学版),30(1):9-18. 姜红霞,吴亚生. 2007. 江西修水二叠系—三叠系界限地层树枝状微生物岩状岩石成因初解[J]. 地质论评,53(3):323-328. 金之钧,朱东亚,胡文瑄,等. 2006. 塔里木盆地热液活动地质地球化学特征及其对储集层影响[J]. 地质学报,80(2):245-254. 雷卞军,强子同,陈季高. 1991. 川东北上二叠统生物礁成岩作用与孔隙演化[J]. 石油与天然气地质,12(4):364-375. 雷卞军,强子同,文应初. 1994. 川东及邻区上二叠统生物礁的白云岩化[J]. 地质论评,40(6):535-543. 李鹏春,陈广浩,曾乔松,等. 2011. 塔里木盆地塔中地区下奥陶统白云岩成因[J]. 沉积学报,29(5):842-856. 蔺军,周芳芳,袁国芬. 2010. 塔河地区寒武系储集层深埋藏白云石化特征[J]. 石油与天然气地质,31(1):13-27. 梅冥相. 2012. 从3个科学理念简论沉积学中的“白云岩问题”[J]. 古地理学报,14(1):1-12. 马锋,许怀先,顾家裕,等. 2009. 塔东寒武系白云岩成因及储集层演化特征[J]. 石油勘探与开发,36(2):144-155. 马永生,牟传龙,郭彤楼,等. 2005. 四川盆地东北部长兴组层序地层与储存分布[J]. 地学前缘,12(3):179-185. 马永生,牟传龙,谭钦银,等. 2007. 达县—宣汉地区长兴组—飞仙关组礁滩相特征及其对储集层的制约[J]. 地学前缘,14(1):182-192. 牟传龙,马永生,王瑞华,等. 2005. 川东北地区上二叠统盘龙洞生物礁成岩作用研究[J]. 沉积与特提斯地质,(Z1):198-202. 潘正莆,李菊英. 1990. 白云石化作用与中国东部白云岩地层[J]. 中国科学院地质研究所集刊,4:1-98. 王丹,陈代钊,杨长春,等. 2010. 埋藏环境白云石结构类型[J]. 沉积学报,28(1):17-25. 王海峰,刘建波,江崎洋一. 2012. 贵州罗甸大文二叠—三叠系界线剖面海平面变化及其全球对比[J]. 北京大学学报(自然科学版),48(4):589-602. 王小林,胡文瑄,钱雄,等. 2009. 塔里木盆地柯坪地区中寒武统藻白云岩去白云岩化研究[J]. 矿物学报,29(1):56-62. 王运生. 1996. 四川盆地长兴期生物礁及礁型气藏[J]. 矿物岩石,16(2):62-69. 吴仕强,朱井泉,王国学,等. 2008. 塔里木盆地寒武—奥陶系白云岩结构构造类型及其形成机理[J]. 岩石学报,24(6):1390-1400. 吴亚生,范嘉松,金玉轩. 2003. 晚二叠世的生物礁出露及其意义[J]. 地质学报,77(3):289-296. 徐维胜. 2012. 沉积相和成岩作用对生物礁储集层成因的控制研究[J]. 断块油气田,19(1):51-54. 余宽宏,金振奎,周勇,等. 2011. 塔里木盆地东部地区寒武纪海盆局限期深水准同生白云岩化作用的研究[J]. 沉积学报,29(6):1041-1047. 张娣,李嵘,杨平,等. 2012. 雪峰山西侧地区下古生界海相白云岩储集层的成岩作用[J]. 地质通报,31(11):1862-1871. 张婷婷,刘波,秦善. 2008. 川东北二叠—三叠系白云岩成因研究[J]. 北京大学学报(自然科学版),44(5):799-809. 郑荣才,胡忠贵,冯青平,等. 2007. 川东北地区长兴组白云岩储集层的成因研究[J]. 矿物岩石,27(4):78-84. 周波,李明,段书府,等. 2012. 巴楚地区寒武系碳酸盐岩白云石化机制[J]. 石油勘探与开发,39(2):198-202. 朱东亚,金之钧,胡文瑄. 2010. 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,40(2):156-170. Al-Aasm I S. 1999. Chemical and isotopic constraints for recrystallization of sedimentary dolomites from the western Canada sedimentary basin[J]. Aquatic Geochemistry,6:227-248. Alex M,Brian J. 2003. Dolomitization of the Pedro Castle Formation(Pliocene),Cayman Brac,British West Indies[J]. Sedimentary Geology,162:219-238. American Geological Institute. 1987. Glossary of Geology[M]. AGI,Alexandria,VA,788. Chilingar G V,Bissel H J,Fairbridge R W(eds). 1967. Carbonate Rocks(Physical and Chemical aspects)[M]. Amsterdam: Elsevier Publ. Co.,225-251. Dawans J M,Swart P K. 1988. Textural and geochemical alternations in late Cenozoic Bahamian dolomites[J]. Sedimentology,35:385-403. Folk R L. 1965. Some aspects of recrystallization in ancient limestones[A]. In:Pray L C,Murray R C(eds). Dolomitization and Limestones Diagenesis[C]. SEPM Specical Publications,13:14-48. Gregg J M,Sibley D F. 1984. Epigenetic dolomitization and the origin of xenotopic dolomite texture[J]. Journal of Sedimentary Petrology,54:908-931. Ian J F,Andrew H K,Swett K. 1991. Coastal lithofacies and biofacies associated with syndepositional dolomitization and silicification(Draken Formation,Upper Riphean,Svalbard)[J]. Precambrian Research,53(3-4):165-197. Land L S. 1980. The isotopic and trace element geochemistry of dolomite:The state of the art[A]. In:Zenger D H,Dunham J B,Ethington R L(eds). Concepts and Models of Dolomitization[M]. SEPM Special Publicabions,28:87-110. Land L S. 1985. The origin of massive dolomite[J]. Jour. Geol. Education,33:112-125. Machel H G. 1997. Recrystallization versus neomorphism,and the concept of ‘significant recrystallization in dolomite research[J]. Sedimentary Geology,113:161-168. Machel H G. 2004. Concepts and models of dolomitization:A critical reappraisal[A]. In:Braithwaite C J R,Rizzi G,Darke G(eds). The Geometry and Petrogenesis of Dolomite Hydrocarbon Reservoirs[M]. Geological Society(London),Special Publication,235:7-63. Mario C. 2003. Dolomitization and recrystallization of middle Silurian reefs and platformal carbonates of the Guelph Formation,Michigan Basin,Southwestern Ontario[J]. Bulletin of Canadian Petroleum Geology,2(51):177-199. Mazzullo S J. 1992. Geochemical and neomorphic alteration of dolomite:A review[J]. Carbonates and Evaporites,7(1):21-37. Moore C H. 1989. Carbonate Diagenesis and Porosity [M]. New York: Elsevier, 1-338. Moore C H,Druckman Y. 1981. Burial diagenesis and porosity evolution,Upper Jurassic Smackover,Arkansas and Louisiana[J]. AAPG Bulletin,65:597-628. Muhsin E,Meryem Y K,Selahattun K. 2007. Petrography,Geochemistry and Origin of Lower Liassic Dolomites in the Aydnck Area,Mersin,Southern Turkey[J]. Turkish Journal of Earth Sciences,16:339-362. Sass E,Katz A. 1982. The origin of platform dolomites:New evidence[J]. Am. J. Sci.,282:1184-1213. Sibley D F,Gregg J M. 1987. Classification of dolomite rock textures[J]. Journal of Sedimentary Research,57(6):967-975. Vahrenkamp V C,Swart P K. 1994. Late Cenozoic dolomites of the Bahamas:Metastable analogues for the genesis of ancient platform dolomites[J]. Spec. Publs. Int. Ass. Sediment,21:133-153. Veizer J,Ala D,Azmy K, et al. 1999. 87Sr/86Sr,13C and18O evolution of Phanerozoic seawater[J]. Chem. Geol.,161:59-88. Walter M R,Veevers J J,Calver C R, et al. 2000. Dating the 840-544Ma Neoproterozoic interval by isotopes of strontium,carbon,and sulfur in seawater,and some interpretative models[J]. Precambrian Research,100:371-433.
