紀伊半島の石油・天然ガス資源に関する地球化学的考察

• 坂田 将

  地質調査所技術部

• 牧 真一

  (現)地質調査所技術部

• 矢崎 清貫

  伊勢化学(株)

• 永田 松三

  地質調査所技術部

書誌事項

タイトル別名

• Geochemical study on the possibility of oil and gas accumulation in the Kii Peninsula, Japan
• キイ ハントウ ノ セキユ テンネン ガス シゲン ニ カンスル チキュウ カ

抄録

To investigate a possibility of oil and gas accumulation, we analyzed surface sedimentary rocks and subsurface gases from the Neogene to the Mesozoic in the southern Kii Peninsula, Japan. Rock samples yielded total organic carbon (TOC of 0.20〜1.94% (av. 0.53%) and extractable hydrocarbon (HyR) of 9〜53 ppm (av.22 ppm). Plot of HyR versus TOC suggested most samples to be a lean oil source or a possible source of methane. Atomic H/C ratio of kerogen from the rock samples was 0.40〜0.66 (av. 0.49). Van Krevelen Diagram showed high maturities of these samples, but could not determine kerogen types. CH₄ content of gas samples was 0.000〜93.7%, mostly being higher than 1%. Plot of C₁/(C₂+C₃) versus δ¹³C(CH₄)_PDB indicated their hydrocarbons to be thermocatalytic products of organic matter. CH₄ was likely to have been concentrated against other hydrocarbons during migration.

収録刊行物

• 地球化学

  地球化学 21 (2), 65-74, 1987

  一般社団法人日本地球化学会

詳細情報

• CRID: 1390282680719221760
• NII論文ID: 110008679801
• NII書誌ID: AN00141280
• DOI: 10.14934/chikyukagaku.21.65
• ISSN: 21885923
• ISSN: 03864073
• NDL書誌ID: 3158150
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3158150
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可