储层非均质性所形成的非常规油藏

Unconventional oil pools resulted from reservoir heterogeneity

介绍了三种非常规的特殊油藏类型和现象:“水包油”的特殊岩性油藏、高部位低产高含水、低部位高产低含水的低渗透油藏、油水界面不一致的高渗透油藏。这几个油藏的形成与储层非均质性有着密切的关系。通过对储层沉积环境、油气向圈闭运移、排替水的过程等多方面的综合分析,重点阐述了这几个非常规油藏的形成过程中储层非均质性对成藏形式、油水分布、生产状况等方面的影响。

This paper introduces three special types of unconventional oil pools, including special 'oil in water' lithol-ogic oil pool, low permeability oil pool with low oil production and high water cut at the high position while high oil production and low water cut at the low position, and high permeability oil pool with non - uniform oil - water contact. The formation of these oil pools are closely related with reservoir heterogeneity. Based on comprehensive analysis of the depositional environment of reservoirs, migration of hydrocarbons into traps and the process of water displacement, this paper highlights the influences of reservoir heterogeneity on oil accumulation, oil and water distribution and flow conditions in the process of formation of these unconventional oil pools.