室内実験による有機変成作用の研究
スポンサーリンク
概要
- 論文の詳細を見る
Three series of pyrolysis experiments, anhydrous pyrolysis in helium-flow open system, hydrous pyrolysis in closed system and compaction-hydrous pyrolysis in open/closed system were performed to obtain a better understanding of organic metamorphism. Changes in the vitrinite reflectance, petrographic texture, ^<13>C-NMR spectra, and Raman spectra of a Japanese subbituminous coal and oil/gas generation from three kerogen types in the above pyrolyses were correlated with the experimental conditions, and the process and mechanism of organic metamorphism is demonstrated as follows: (1) The major driving force of organic metamorphism is heat subjected to sediments. The pressure, ambient condition, and reaction system do not promote the organic metamorphism itself. However, they affect the migration of products and the interaction between sedimentary organic matter (SOM) and pyrolysate, resulting in the differences in organic petrography and position of bond cleavage/re-coupling in the chemical structure. (2) Hydrogen poor macerals as vitrinites/inertinites, and the aromatic carbon bond species in the chemical structure of SOM are relatively stable through organic metamorphism. They are fixed in sediments and aromatized with increasing organic metamorphism, and finally change to graphite. On the other hand, hydrogen rich macerals as alginites and exinites, and the aliphatic carbon bond species in the chemical structure of SOM are not stable, and are removed from SOM through organic metamorphism. Those hydrogen rich macerals are assumed to be the main source of the generated oil and gas, and are affected by pressure, ambient condition and reaction system. (3) The reaction in the organic metamorphism begins from hydrogen rich macerals with lower bond energy, and it proceeds gradually to hydrogen poor macerals with higher-bond energy. SOM is roughly divided into two categories; the stable portion remaining in sediments to preserve geological record and the reactive portion converting to oil and gas.
- 日本有機地球化学会の論文
- 2001-11-10
著者
関連論文
- 油田水に含まれる有機酸について(第10回有機地球化学シンポジウム(湯沢シンポジウム))
- 圧密熱分解生成物中のバイオマーカー(第10回有機地球化学シンポジウム(湯沢シンポジウム))
- 加熱実験による石炭組織の変化(第10回有機地球化学シンポジウム(湯沢シンポジウム))
- O-258 基礎試錐「夕張」における流体包有物の検討
- 588 新第三系堆積盆地における炭化水素鉱床の成立条件 : 分子熟成指標による検討(鉱物・地質資源)
- 室内実験による有機変成作用の研究
- 414. 新第三系石油根源岩中の有機化合物組成及び含有量の熟成変化
- 低真空走査電顕(LV-SEM)によるケロジェン・石炭マセラルの観察(第11回有機地球化学シンポジウム(大牟田シンポジウム))
- 根源岩からの油・ガス排出現象における「油飽和率」と「相対浸透率」の重要性(第10回有機地球化学シンポジウム(湯沢シンポジウム))
- 熱分解実験による石油生成反応の検討(その4) : 熱分解手法による反応の違いについて(第8回有機地球化学シンポジウム(島根シンポジウム))
- 有機物の熟成と石油生成反応(2.有機物の熟成,石油探査における有機地球化学の役割,第7回有機地球化学シンポジウム(烏山シンポジウム))