饶阳凹陷留西地区沙三段岩性油藏成藏条件研究

Lithologic Reservoir Forming Conditions in Linxi Es_3 of Raoyang Depression

分析了饶阳凹陷留西地区的成藏条件。结果表明,研究区油气资源丰富,储层物性主要为中孔中低渗储层,圈闭类型主要为砂岩上倾尖灭的岩性圈闭和构造或岩性构造圈闭,成藏条件较好。在成藏条件分析的基础上,构建了该区油藏的成藏模式并分析了成藏规律。勘探实践证实,研究区油气藏类型主要受构造岩性双重因素控制,油藏类型主要为岩性油藏及构造岩性油藏。

The conditions for oil accumulation is Liuxi Area of Raoyang Depression are analyzed. The result shows that the hydrocarbon resources are abundant, physical properties of the reservoirs are mainly of mid-porosity and mid-low permeability reservoirs, its trap types are mainly of overlying pinchout lithological traps and structural or lithological-structural traps, accumulation conditions are good. On the basis of analyzing accumulation conditions, the patterns of oil accumulation are established and the laws of accumulation are analyzed. Exploration indicates that the hydrocarbon reservoir types in the area are mainly controlled by the dual factors of structure and lithology, the oil reservoir type is mainly controlled by structural-lithological reservoirs.