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- 早稲田 周
- 石油資源開発株式会社技術研究所
書誌事項
- タイトル別名
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- Carbon isotope geochemistry on natural gases in Japan
- コクナイ テンネン ガス ノ タンソ ドウイタイ チキュウ カガク
この論文をさがす
抄録
The genetic origin (abiogenic vs. biogenic, microbial vs. thermogenic), maturity of thermogenic component, compositional change due to migration, and extent of biodegradation of natural hydrocarbon gases in Japan are interpreted using carbon isotope compositions of methane, ethane and propane, and hydrocarbon molecular ratios. Mixing of gases with different origins or different maturities can also be evaluated using gas isotopic and molecular compositions. Abiogenic gas contribution is not detected in the natural gases. Most production gases are classified into thermogenic or mixed microbial/thermogenic except for some water-dissolved type gases of microbial origin. Ethane and propane carbon isotope compositions of thermogenic hydrocarbons are controlled largely by maturity. The gases in the Niigata Basin show generally higher maturity than the gases in the Akita/Yamagata Basin. <br>Carbon isotope analyses of headspace and/or mud gas can be used to delineate subsurface hydrocarbon reservoirs and to understand gas migration and accumulation processes. Carbon isotope compositions in commingled production could be used to allocate contributions from individual production zones if isotopic differences exist between the gases from the contributing reservoirs. Origin of gas seepage in production sites could be investigated by the gas molecular and isotope compositions if enough reference data exist in the area.
収録刊行物
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- Researches in Organic Geochemistry
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Researches in Organic Geochemistry 26 (0), 3-12, 2010
日本有機地球化学会
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詳細情報 詳細情報について
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- CRID
- 1390282680389365760
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- NII論文ID
- 110008006519
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- NII書誌ID
- AA11889471
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- ISSN
- 21897891
- 13449915
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- NDL書誌ID
- 10958103
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可