二连盆地岩性地层油藏形成条件与油气分布规律

二连盆地具有形成岩性、地层油藏的良好条件。通过对油气成藏条件的综合分析认为,岩性、地层油藏主要沿地层不整合面、最大湖泛面和断面分布;岩性、地层油藏既可以分布在低位体系域,也可以分布在高位体系域;既可以分布在高势区,也可以分布在低势区;在有利的沉积与储集相带内,可以形成富集油藏。因此在地层、岩性油气藏勘探程度很低的二连盆地具有良好的勘探前景。

Formation Conditions for Lithologic and Stratigraphic Oil Reservoirs and Oil and Gas Distribution in Erlian Basin

Erlian Basin boasts the good formation conditions for lithologic and stratigraphic oil reservoirs. Based on the analysis of the conditions for oil and gas migration and accumulation, lithologic and stratigraphic oil reservoirs are distributed mainly in the unconformity surface, the maximum lake-flooded surface and the faulted surface. Such oil reservoirs can be distributed both in the low stand and the high stand systems tracts, as well as both in the high-potential zone and the low-potential zone. The abundance of oil reservoirs can be formed in the favorable sedimentary and reservoir belt. Therefore, there is a promising prospect for exploration of Erlian Basin, where lithologic and stratigraphic oil and gas reservoirs have a low exploration degree.