Paleo-Pressure Restoration of Chang 7 Shale in Xifeng Area, <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:place w:st="on"><st1:PlaceName w:st="on">Ordos</st1:PlaceName> <st1:PlaceType w:st="on">Basin</st1:PlaceType></st1:place>

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Paleo-Pressure Restoration of Chang 7 Shale in Xifeng Area, on">on">Ordos on">Basin

详细信息

责任者：Liu Zhen (State Key Laboratory of Petroleum Resource and Prospecting ; China University of Petroleum ; Beijing 102249 ; China) ; Chen Kai
刊名：Journal of China University of Petroleum
出版年：2012
卷期：36(2)
关键词：地层压力 ; formation pressure ; 排烃作用 ; hydrocarbon expulsion action ; 泥岩 ; mudstone ; 鄂尔多斯盆地 ; Ordos Basin
页码：p.1-7
图表：3 illus., 2 tables, 20 refs.
分类号：1003
issnNo：ISSN1673-5005
isbnNo：CN37-1441/TE

摘要

Based on the data of drilling and logging,paleo-pressure of Chang 7 undercompacted shale in Xifeng area was restored by using statistic analysis,buried history simulation and formation pressure calculation.The results show that the formation porosity is always influenced by buried depth and geological time. There is a exponential relationship between undercompacted porosity increment and buried depth of Chang 7 shale.Porosity of Chang 7 undercompacted shale during accumulation period could be easily figured out by employing this function in combination with formation buried history.Significant overpressure develops in Chang 7 undercompacted shale during accumulation period.