油气地质与采收率2017，Vol.24Issue(5)：53-57,5.
超稠油油藏油水倒置成因及含油面积圈定探析——以埕东油田埕911-平1块馆下段为例
Genesis of oil/water inversion and delineation of oil-bearing area in super-heavy oil reservoirs :A case study of the lower member of Guantao Formation in Block Cheng911-Ping1, Chengdong Oilfield
摘要
Abstract
The reservoir that produces water at high structure and oil at low structure maybe present phenomenon of oil/water inversion in super-heavy oil reservoir in the lower member of Guantao Formation of Block Cheng911-Pingl,Chengdong Oilfield.Its reason is not clear yet.Based on the well logging,experiment and dynamic data of development,the characteristics of oil/water inversion and its genesis were analyzed comprehensively.The ground crude oil density ranges from 1.007 6 to 1.024 8 g/cm3,which is higher than the formation water density in this area.The heavy oil migrates to the lower structure against the buoyancy and capillary force under the action of gravity,and it is the main reason of the oil/water inversion.This viewpoint was confirmed by mud logging and well logging data.The oil/water distribution law in reservoirs featured by oil/water inversion is very different from that in the conventional oil reservoir.Some principles and methods for delineation of the oil-bearing area in the conventional oil reservoir are not applicable to reservoirs featured by oil/water inversion.Taking proven oil-bearing area as an example,the corresponding delineated principle and the key points in delineation of oil-bearing area in the super-heavy oil reservoirs were proposed aiming at the complex oil-water distribution.关键词
超稠油油藏/油水倒置/成因/录井特征/测井响应/含油面积Key words
super-heavy oil reservoirs/oil/water inversion/genesis/mud logging characteristics/well logging response characteristics/oil-bearing area分类
能源科技引用本文复制引用
陈振标..超稠油油藏油水倒置成因及含油面积圈定探析——以埕东油田埕911-平1块馆下段为例[J].油气地质与采收率,2017,24(5):53-57,5.基金项目
中国石化科技攻关项目“垦西油田罗322超深层低渗稠油有效开发技术”(P14009). （P14009）
