石狩〜日高堆積盆における石油システム : 勇払油ガス田の地化学データを中心として Petroleum system in the Ishikari-Hidaka sedimentary basin : Geochemical interpretation of the Yufutsu oil/gas field

この論文にアクセスする

この論文をさがす

著者

抄録

The petroleum system of the Ishikari-Hidaka basin was investigated using the geochemical data and basin modeling of the Yufutsu oil/gas field. The Yufutsu field is located on the Tomakomai ridge, a north-south trending basement high at the center of the Ishikari-Hidaka basin. In the Yufutsu field, gas and pale yellow-orange waxy condensate oil are produced from so called &quot;Deep Reservoir&quot;, the Cretaceous granitic rocks and the conglomerate member of the Eocene Ishikari Group. In addition, bitumen is observed on cores of Deep Reservoir. Further, black oils are found in the &quot;Shallow Reservoirs&quot;, the upper Eocene coal bearing member of the Ishikari Group, the upper Oligocene Minami-naganuma Formation and the Miocene Takinoue Formation. Oils from the Shallow and Deep reservoirs are correlated to the coal bearing member of the Ishikari Group, from biomarker and carbon isotope data. However, there is subtle compositional difference between oils in the Shallow and Deep Reservoirs. From higher sterane C<SUB>29</SUB>-20S/(20S+20R), Ts/(Ts+Tm), Diahopane/C<SUB>30</SUB>-hopane, Oleanane/C<SUB>30</SUB>hopane ratios, oil from the Deep reservoir is highly matured. On the other hand, oils from the Shallow reservoirs are of moderate maturity. From basin modeling at the main kitchen to the east of the Yufutsu field, the time of peak oil generation was 10-15 Ma. The distribution of oils in the Shallow and Deep Reservoirs are explained as follows : 1) At earlier stage, moderately matured oil was generated in the main kitchen, and some oil migrated into the Deep Reservoir. 2) At later stage, with increasing burial, gas generation and cracking of retained bitumen began, and the gas and condensate migrated into the Deep Reservoir. As a result, de-asphaltation occurred. At the same time, coal and coaly shale around the Yufutsu field became mature, and black oil migrated into sandstone in the Ishikari Group. For oils in the Minami-naganuma and the Takinoue Formations, the timing of accumulation is not clear.

収録刊行物

  • 石油技術協会誌

    石油技術協会誌 67(1), 52-61, 2002-01

    石油技術協会

参考文献:  25件中 1-25件 を表示

被引用文献:  8件中 1-8件 を表示

各種コード

  • NII論文ID(NAID)
    10008013025
  • NII書誌ID(NCID)
    AN00130976
  • 本文言語コード
    JPN
  • 資料種別
    REV
  • ISSN
    03709868
  • NDL 記事登録ID
    6111013
  • NDL 雑誌分類
    ZP29(科学技術--化学・化学工業--燃料--石油)
  • NDL 請求記号
    Z17-178
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
ページトップへ