The dolerite reservoir and its alteration in the Ayukawa oil and gas field, Akita Prefecture, Japan.
スポンサーリンク
概要
- 論文の詳細を見る
Hydrocarbon reservoirs in the Ayukawa oil and gas field are composed of middle Miocene argillaceous rock, acid tuff and dolerite. Various petrographic and petrophysical analyses of the dolerite reservoir suggest that it is formed by the selective dissolution of saponite which replaced mafic minerals and plagioclase during a duration of alteration.In the duration of alteration, three types of alteration facies in the dolerite and its surrounding rocks are distinguished; secondary mineral zoning characterized with abundant saponite, dissolution of saponite and plagioclase at low pH condition, and cementation by K-feldspar and/or dolomite. They are supposed to be analogous to a product by seawater dominated alteration (Mottl and Seyfried, 1983 and others) which occurs during cooling of dolerite intrusions.Similar types of alteration have been recognized in dolerites of other hydrocarbon fields in NE Japan as well, in which other dolerite reservoirs might be expected.
- 石油技術協会の論文
石油技術協会 | 論文
- 地震波シミュレーションが地下構造探査に果たす役割
- インバージョンテクトニクス
- 最近の探鉱プレイへの構造形成モデルの貢献
- 堆積盆地の地史情報に基づく沈降モデルと構造形成--日本海東部と中国北部湾を例にして (第55回石油技術協会総会地質・探鉱部門シンポジウム--堆積盆地評価とその応用)
- 東北裏日本海域における石油の生成と移動の時期 (「石油の生成と移動の時期」シンポジウム特集号)