石油技術協会誌
Online ISSN : 1881-4131
Print ISSN : 0370-9868
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38 巻 , 2 号
選択された号の論文の6件中1~6を表示しています
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  • 中浜 淳伸
    38 巻 (1973) 2 号 p. 67-78
    公開日: 2008/06/30
    ジャーナル フリー
  • 鍋谷 祐夫, 藤岡 一男
    38 巻 (1973) 2 号 p. 79-86
    公開日: 2008/06/30
    ジャーナル フリー
    In diagenesis of mud deposits, abnormal high pressures are expected at certain depths and stages of sedimentation. The high pressures are considered to be due to excess free water released from rigid ice layers of clay and zeolitic minerals in alterative temperature and overburden pressures. In addition to the process which schemed by W. D. KELLER as montmorillonite plus potassium to illite and glauconite mica, the alteration of vitric tuff to clinoptilolite and clinoptilolite to analcime were very common in the Funakawa Formation of the Akita oil-field. High pressure mudstones were investigated by core analysis, well-log analysis, X-ray measurements and bottom-hole evidences. A reservoir is built up with fluid migrated into porous media along innumerable of fractures and pore spaces opened by excess high pressures and extensional stresses in the muddy rocks, of which pre- and post-alteration mudstone close and hold the containing pressure. Calculations for several models of high pressure domain show that reservoir maintenance was continued for a period of million years for an ordinary impermeable cap rock.
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  • 佐々木 清隆, 田口 一雄
    38 巻 (1973) 2 号 p. 87-100
    公開日: 2008/06/30
    ジャーナル フリー
    This is the fourth of a series of paper reporting the results of a study of the porphyrin pigments and polycyclic aromatics in Neogene Tertiary rocks, Northeast Japan. The present paper gives the results of analyses on 92 muddy rocks from the Chuetsu oil field, Niigata Prefecture (Fig. 1). These data, along with earlier analytical results from the previous reports (Taguchi, Sasaki & Ushijima, 1969; Taguchi, Sasaki, Endo & Sato, 1970; Taguchi, Sasaki & Ushijima, 1970) are discussed from the standpoint of sedimentological study.
    The tendency of the stratigraphic distribution of these compounds in the study area is generally the same as in other areas reported before. However, the average contents of the nickel porphyrin of the Teradomari Formation in Higashiyama and Nishiyama areas show rather different value from correlatives of the Teradomari in the other areas and A-type of vanadyl porphyrin is detected preferentially not only in the early or middle Miocene strata as reported previously but also in the younger formation as the Shiiya of late Miocene. Polycyclic aromatics were found with 100 per cent positive indications in the study area, and showed higher concentration in the samples of the Nanatani Formation in the Higashiyama area. Particularly, it is very interesting that histogram which shows spectral variations in wavelengths of absorption peaks for polycyclic aromatics in the Higashiyarna area has similar pattern to those in some coal fields.
    The results mentioned above are showed more clearly and are compared with those of other areas by employing the triangular diagrams as seen in Fig. 6. It is clear that both areas of Higashiyama, Niigata District and Kanita, Aomori District have the different patterns from those of Akita and Yamagata Districts. The two unique patterns in Higashiyama and Kanita areas are called “Higashiyama-type” and “Kanita-type” respectively. Other patterns belong to “Yashimatype” which were reported previously.
    The characteristics of Higashiyama-type may be explained well by the fact that Higashiyama area is located at the marginal part of the Niigata sedimentary basin. Imokawa area also lies in the marginal part, but it does not show similar pattern to the Higashiyama. This may be attributed to the fact that Imokawa area corresponds to the invasion area which have developed roughly in the NW-SE direction in the time of deposition.
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  • 斎藤 隆, 鈴木 勝王
    38 巻 (1973) 2 号 p. 101-115
    公開日: 2008/06/30
    ジャーナル フリー
    「傾向面分析」という統計的地質解折の新しい手法は, 10年余り前から,おもに米国の地質家によって利用されている。この種の分析技法は,とかく地質家には馴みの薄いものであったが,探鉱開発の実務に有効な役割を果してきた。最近,計算機応用の技術向上と相俟って,一段と数理的なものにする努力が払われている。本論文の目的は,この「傾向面分析」という新しい解析手法の「概念」と「方法論」と「応用法の実際」を,日本の石油地質データを使って紹介することである。データとして,山形県庄内平野の坑井のIsocoreデータを使用した。計算機が描いた図の解釈については,それが何を意味するかについてなお研究の必要があるが,地層の発達状況との相関はきわめて合理的に表現されている。これら数理的な解析の効用を理解し,探鉱開発技術の一助とする必要がある。
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  • 平川 誠一, 石井 吉徳, 藤永 好宣
    38 巻 (1973) 2 号 p. 116-117
    公開日: 2008/06/30
    ジャーナル フリー
  • 嶋崎 統五, 徳永 重元, 尾上 亨
    38 巻 (1973) 2 号 p. 118-119
    公開日: 2008/06/30
    ジャーナル フリー
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