摘要
德南洼陷沙三段 ( Es3 )油灶的低成熟度大大降低了德南洼陷的勘探成功率。泥岩压实曲线推测和油气显示资料表明 ,Es3 低熟油灶的油气初次运移主要指向沙四段 ( Es4 )储层。射线追踪法和探井油气显示资料表明德南洼陷油气再次运移分配主要受运移路线、距油灶的远近等因素影响。运移优选通道是近油灶的灰岩裂缝。综合研究认为该区的有利勘探层位是 Es4 ,有利圈闭位于近油灶的两个 类油气运移分配单元内 ,以灰岩中的砂层夹层为主要目标。
There has been ineffective exploration of Denan Depression for its low maturity of the E s 3 oil kitchen.The study of the shale compaction curve concludes that the E s 4 is a main member to accommodate the oil expelled from the source rocks of the E s 3 Member. A tracing method combined with oil shows indicates that the migration paths and the distance to oil kitchen are two main factors controlling the secondary migration and assignment of the oil. The preferential paths in this area are fractures in limestone. It is concluded that the E s 4 member is the destination of exploration and that two assignment units of the type Ⅰ are prospective areas where faulted reservoirs, fracture reservoirs, lithologic deposits may well be founded.
出处
《地质科技情报》
CAS
CSCD
北大核心
2001年第4期41-45,共5页
Geological Science and Technology Information
