Sequence stratigraphy; seeking its possibility. Stacking patterns in the Upper Jurassic barrier shoal-sabkha complex (Arab and Hith Formations), Neewat Al Ghalan (GA) Field, offshore Abu Dhabi. Stacking patterns of sedimentary cycles in the reservoir sect
スポンサーリンク
概要
- 論文の詳細を見る
The depositional sequence in the Upper Jurassic Arab•Hith Formations, which is main reservoir zone of the Neewat Al Ghalan (GA) field, offshore Abu Dhabi, is composed of sabkha-nearshore deposits and divided into two systems tracts (transgressive systems tract (TST) and highstand systems tract (HST)) based on the characteristics of parasequence stacking patterns.Each parasequence in TST shows a shallowing upward cycle which commences from barrier shoal grainstone and terminates in lagoonal mudstone or sabkha anhydrite. Vertical stacking patterns of these parasequences within TST indicate thinning upward cycle and retrogradational/aggradational pattern.The parasequences in HST are characterized by a shallowing upward cycle from tidal channel grainstone or lagoonal mudstone to sabkha anhydrite. Stacking patterns of both bedsets parasequences within HST show overall thickening upward cycles and progradational pattern.The stacking patterns in the depositional sequence reflect various orders of sea level fluctuations. During TST deposition the barrier shoal systems accompanied by shoreface erosion developed in the field. In the succeeding HST deposition, the barrier shoal (strand plain) systems were migrating basinward, and the tidal flat-sabkha systems, in turn, were prograding to the field. These environmental changes due to the sea level fluctuations are considered to have affected the reservoir quality (cementation or dolomitization) of the field.
- 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)