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Article Navigation >  PETROLEUM GEOLOGY & EXPERIMENT  > 2004  >  26(2): 200-205
LI Xian-qing, HOU Du-jie, XIAO Xian-ming, YANG Kai-lin, TANG You-jun, BAO Jian-ping, MA An-lai, XIONG Bo. STUDY OF OIL MIGRATION AND INJECTION DIRECTIONS BY NITROGEN COMPOUNDS[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2004, 26(2): 200-205. doi: 10.11781/sysydz200402200
Citation: LI Xian-qing, HOU Du-jie, XIAO Xian-ming, YANG Kai-lin, TANG You-jun, BAO Jian-ping, MA An-lai, XIONG Bo. STUDY OF OIL MIGRATION AND INJECTION DIRECTIONS BY NITROGEN COMPOUNDS[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2004, 26(2): 200-205. doi: 10.11781/sysydz200402200
shu

STUDY OF OIL MIGRATION AND INJECTION DIRECTIONS BY NITROGEN COMPOUNDS

doi: 10.11781/sysydz200402200
  • 1.

    Center of Test and Research, Yangtze University, Jingzhou, Hubei 434023

  • 2. State Key Laboratory of Organic Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, Guangdong 510640, China

  • 3. Department of Energy Geology, China University of Geosciences, Beijing 100083, China

  • 4. Department of Exploration & Development, Tianjin Petroleum Branch Company, CNOOC, Tanggu, Tianjin 300452, China

  • Received Date: 2003-05-06
  • Rev Recd Date: 2004-02-07
  • Publish Date: 2004-03-25
    Abstract
  • Based on the composition and concentration changes of nitrogen compounds in the study oil samples as well as the maturity indexes of saturated and aromatic biomarkers,this paper investigated the oil migration and injection direction of Caofeidian and nearby areas in the offshore part of the Bohai Bay Basin.The results showed that the distribution and composition characteristics can indicate oil fractionation effects.With the increasing of oil migration effects,the concentration of nitrogen compounds decreased whereas the ratios of shielded nitrogen compounds to exposed or semi-shielded ones increased.The oil migration and injection direction of the Shaleitian Uplift was from east to west,with the main charging point in the east.Two oil migration and injection directions (i.e.,eastnorth and southwest) were found in the Shadongnan tectonic zone.Oil in the Shijiutuo Uplift and the inclined end migrated from northwest.This is consistent with oil migration directions deduced from the gradient changes of hydrocarbon biomarkers.All these conclusions are also accorded with the regional oil occurrences and exploration facts.

     

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