石油勘探与开发2011，Vol.38Issue(3)：379-384,6.
饱和压力法确定成藏期问题探讨
Conditions for the saturation pressure method in identifying oil accumulation periods
摘要
Abstract
There have been arguments on the principle and method of oil saturation pressure for determining the accumulation period of oil reservoirs. The application of the method in the high-exploration-degree depression, Jiyang Depression, shows thnt the method is not fit for many reservoirs, the inferred depths and periods of the oil accumnulation do not match the actual conditions. Based on the study of the oil saturation pressures in the reservoirs and the change of the oil saturation pressures in the oil generation and migration stage, this paper analyzes the reason why the method is not working for many reservoirs in the Jiyang Depression. In the Jiyang Depression, the saturated oils are not necessarily lowest in viscosities and easiest to migrate in formation conditions. Most oils generated and expelled from the Paleogene source rocks of the Jiyang Depression are unsaturated. The oils migrating and accumulating in an unsaturated state are the main reason why the oil saturation pressure method does not work in the area. Oils can accumulate in a large scale both in a saturation state and in an unsaturated state. So, the saturation pressure method cannot be used to determine the accumulation period of a reservoir before it is clear that the oils in the reservoir were accumulated in a saturated state.关键词
饱和压力/成藏期/油藏/饱和原油/生排烃/济阳坳陷/地层原油黏度Key words
saturation pressure/ accumulation period/ reservoir/ saturated oil/ hydrocarbon generation and expulsion/ Jiyang Depression/oil viscosity分类
能源科技引用本文复制引用
包友书,蒋有录,张林晔,李钜源,张守春,王茹..饱和压力法确定成藏期问题探讨[J].石油勘探与开发,2011,38(3):379-384,6.基金项目
国家科技重大专项课题"油气资源潜力再认识"(2008ZX05006-003) （2008ZX05006-003）
国家自然科学基金项目"湖相页岩气形成条件研究"(41072096) （41072096）
中国石化科技攻关项目"东营凹陷地层流体系统演化与油气成藏研究"(P09010) （P09010）
