Types and characteristics of eogenetic karst in the Yingshan Formation in northwestern Tazhong area, Tarim Basin

被引：0
|
作者：
Zhang H. [1 ,2 ,3 ]
Cai Z. [1 ,3 ]
Qi L. [4 ]
Yun L. [4 ]
机构：
[1] Key Laboratory of Tectonics and Petroleum Resources Ministry of Education, China University of Geosciences(Wuhan), Wuhan, 430074, Hubei
[2] Bureau of Economic Geology, University of Texas at Austin, Austin, 78713-8924, TX
[3] Faculty of Earth Resources, China University of Geosciences(Wuhan), Wuhan, 430074, Hubei
[4] Northwest Oilfield Company, SINOPEC, Urumqi, 830011, Xinjiang
来源：
Cai, Zhongxian (zxcai@cug.edu.cn) | 1600年 / Editorial Department of Oil and Gas Geology卷 / 37期
关键词：
Eogenetic stage; Karstification; Meteoric karst; Mixed water karst; Tazhong area; Yingshan Formation;
D O I：
10.11743/ogg20160301
中图分类号：
学科分类号：
摘要：
It is recognized that the Yingshan Formation was in eogenetic stage both in depositional and exposure period according to the tectonic evolution history in Tazhong area. Based on a large amount of image logging, cores, thin sections, geochemical data and 2D & 3D seismic data in combination with cathode luminescence, scanning electronic microscope and seismic attributes extraction, we identified two types of eogenetic karst in the Yingshan Fm.in northwestern Tazhong area, namely mixing water karst and meteoric karst, discussed their formation characteristics and built karstification models. The following results were obtained. (1)The mixing water karst was formed by fabric-selective dissolution and controlled by high-energy sedimentary facies in coastal regions and occurs mainly in Well Shun7 in northern slope break zone; (2)The meteoric karst was produced by non-fabric-selective dissolution, and is universal in areal distribution. Karst reservoirs are dominated by fractured reservoirs and fractured-vuggy reservoirs. The karst is incomplete in vertical architecture and the reservoirs are insignificant in differential characteristics in respect of paleogeomorphology and are controlled by the NWW-trending fault system. The karstification mode is “fissure-seepage” type in an open system under the control of low relief paleogeomorphology. © 2016, Editorial Office of Oil and Gas Geology. All right reserved.
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页码：291 / 303
页数：12
相关论文
共 55 条
  • [1] Choquette P.W., Pray L.C., Geologic nomenclature and classification of porosity in sedimentary carbonates, AAPG Bulletin, 54, 2, pp. 207-250, (1970)
  • [2] Harris P.M., Frost S.H., Seglie G.A., Schneidermann N., Regional unconformities and depositional cycles, Cretaceous of theArabian peninsula, Interregional Unconformities and Hydrocarbon Accumulation, pp. 67-80, (1984)
  • [3] Fritz R.D., Wilson J.L., Yurewicz D.A., Paleokarst Related Hydrocarbon Reservoirs, (1993)
  • [4] Saller A.H., Budd D.A., Harris P.M., Unconformities and porosity development in carbonate strata: Ideas from a Hedberg Conference, AAPG bulletin, 78, 6, pp. 857-872, (1994)
  • [5] Ford D.C., Williams P.W., Karst Hydrogeology and Geomorphology, (2007)
  • [6] Klimchouk A., Morphogenesis of hypogenic caves, Geomorphology, 106, 1, pp. 100-117, (2009)
  • [7] Jia Z., Cai Z., Carbonate paleo-weathered crust reservoirs(Body), Geological Science and Technology Information, 23, 4, pp. 94-104, (2004)
  • [8] Wang H., Zhang H., Sun D., Et al., Application of integrated seismic-geology prediction techniques to weathering crust karst reservoir--An example from Lower Ordovician, Northern Slope of Tazhong area, Natural Gas Geoscience, 20, 1, pp. 131-137, (2009)
  • [9] Ma Q., Sha X., Li Z., Et al., Evidence of exposure erosion of Lower-Middle Ordovician top in Beiweixie region, middleTarim Basin, Petroleum Geology & Experiment, 35, 5, pp. 500-504, (2013)
  • [10] William K.J., William B.W., Karst, Encyclopedia of Caves, pp. 430-438, (2012)
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