收稿日期: 2007-11-14
修回日期: 2008-01-14
网络出版日期: 2008-02-10
Cambrian Sedimentary Characteristics and Origin of High-Quality Dolomite Reservoirs in Eastern Tarim Basin
Received date: 2007-11-14
Revised date: 2008-01-14
Online published: 2008-02-10
刘永福;殷军;孙雄伟;金英爱;卡德乐·托乎提;党青宁 . 塔里木盆地东部寒武系沉积特征及优质白云岩储层成因[J]. 天然气地球科学, 2008 , 19(1) : 126 -132 . DOI: 10.11764/j.issn.1672-1926.2008.01.126
The discovered Cambrian dolomites in Milan well 1 and Yingdong well 2 are important reservoir rocks in the carbonates of the Lower Paleozoic, Eastern Tarim basin. The high-quality dolomite reservoir rocks mainly occurred in carbonate shallow ramp deposits. Geochemical analyses of carbon and oxygen isotopes, ordering determination and inclusions suggest that the dolomites may be divided into two types: the first is the high temperature hydrothermal fluid dolomitization, the second is the seepage reflux dolomitization. The high temperature hydrothermal fluid dolomitization is crucial to the formation of high-quality dolomite reservoir rocks. The formation of high-quality dolomite reservoir rocks is the result of the seepage reflux dolomitization being overprinted by the high temperature hydrothermal fluid dolomitization in the region.
Key words： Eastern Tarim basin; Cambrian; Dolostones; Sedimentary characteristic; Genesis.
[1] Land L S.Failure to precipitate dolomite at 25 degrees from dilute solution despite 1000
-fold oversaturation after 32 years[J]. Aquat Geochem，1988,43(4): 361-368.
［2］ 邵龙义,何宏,彭苏萍,等.塔里木盆地巴楚隆起寒武系及奥陶系白云岩类型及形成机理［J］. 古地理学报, 2002, 4(2):19-30.
［3］ 叶德胜.塔里木盆地北部震旦系至奥陶系白云岩的岩石学及地球化学特征［J］. 地球化学, 1993，(1):1-9.
［4］ 顾家裕. 塔里木盆地下奥陶统白云岩特征及成因［J］. 新疆石油地质,2000,21(2):120-122.
［5］ 郭建华,沈昭国,李建明.塔北东段下奥陶统白云石化作用［J］.石油与天然气地质,1994,15(1):51-59.
［6］ 沈昭国.塔里木盆地下古生界白云石化成因机理及模式探讨［J］. 新疆石油地质，1995,16(4):319-323.
［7］ Zenger D H,Dunham J B. Concepts and models of dolomitization an introduction［C］//Zenger D H, Dunham J B, Ethington R L. Concepts and Models of Dolomitization. SEPN Special Publication,1983;28:1-9.
［8］ Lee Y I,Friedman G M. Deep-burial dolomitization in the Ordovician Ellenburger Group carbonates,west Texas and Southeastern New Mexico［J］. Jour Sed Petrology,1987,57(3):544-557.
［9］ Kaufman R L, Ahmed A S.Gas chromatography as a development and production tool for fringe printing vidual reservoirs: application in the Gulf of Maxico Gulf coast［J］. AAPG Bulletin,1990,48(3):263-282.
［10］ 杨瑞东. 新疆库鲁克塔格地区早寒武世硅质岩地球化学特征及其意义［J］. 地质学报，2006,(4):598-605.
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