摘要
本文根据青山口组中晚期乾安三角洲的沉积特征,结合构造背景,探讨乾安地区高台子油层油藏形成与分布规律,评价其含油远景,选择钻探的有利部位。研究表明,本区高台子油层油藏形成与分布的主要规律是,三角洲砂体控制早期油藏形成与分布,半环状构造群各局部构造的内翼控制晚期油藏形成与分布。该区高台子油层还有较大的找油远景,有利部位首先是半环状构造群各局部构造的内翼未钻探部位,寻找构造-岩性油藏;其次是半环状构造群各局部构造间三角洲前缘砂体和三角洲分流河口砂坝分布区,寻找岩性油藏以及与局部火山岩上拱相伴生的油藏。
his paper a discussion on the formation and the distribution of petroleum reservoirs in the Gaotaizi oil-bearing formation from a study of the depositional feature of the Jianan Delta in middle-upper Qingshankou group combined with that of the tectonic background so as to evaluate its petroleum prospect and to select favorable locations for drilling.A study shows the main regularities in the formation and distribution of the petroleum reservoirs in Gaotaizi oil-bearing formation are:Deltaic sand bodies govern the formation and distributions of the early stage reservoirs;the inner flanks of local structures in the half-ring shaped structurel group govern the formation and distribution of the late rese- rvoirs,good petroleum prospect still exists in Gaotaizi group.The favorable places in Gaotaizi group are:non-drilling part in the inner flanks of local stru- ctures in the half-ring shaped structural groups where structural-lithologic traps can be found;predelta sand boodles and deltaic branched estuarine sand bars between the local structures in the half-ring shaped structural groups where lithologic traps can be found;and traps associated with the arching of the volcanic rocks.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
1989年第3期24-31,15,共9页
Petroleum Exploration and Development
