Oil & Gas Geology ›› 2010, Vol. 31 ›› Issue (1): 69-75.doi: 10.11743/ogg20100112

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Development characteristics and influencing factors of carbonate reservoirs in the Ordovician Lianglitage Formation at the northwest pitching end of the Katake Uplift, the Tarim Basin

Li Huili1,2, Qian Yixiong2,3, Sha Xuguang2, Ma Hongqiang2,3   

  1. 1. SINOPEC Petroleum Exploration & Production Research Institute, Beijing 100083, China;
    2. Petroleum Exploration & Production Research Institute, SINOPEC Northwest Company, Urumqi, Xinjiang 830011, China;
    3. Wuxi Research Institute of Petroleum Geology, SINOPEC Petroleum Exploration & Production Research Institute, Wuxi, Jiangsu 214151, China
  • Received:2009-09-16 Online:2010-02-25 Published:2012-01-16

Abstract:

Drilling results have revealed that fractured-vuggy carbonate reservoirs are developed in the Upper Ordovician Lianglitage Formation at the northwest pitching end of the Katake Uplift in the Tarim Basin.Based on analyses of core,thin section and logging data,this paper discusses reservoir development characteristics and influencing factors in the study area.The study shows that several factors have put effects on the development of reservoirs,such as karstification of the Middle Caledonian phase-Ⅱ weathering crust,penecontemporaneous karstification,burial dissolution and tectonic disruption.The penecontemporaneous karstification and hydrothermal fluid-related burial dissolution made limited contribution to the existing reservoir space.Further study is needed to identify the controlling factors for reservoir development in the study area.

Key words: carbonate reservoir, Lianglitage Formation, Upper Ordovician, Katake Uplift, Tarim Basin

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