二连盆地扇三角洲储层沉积特征

建立二连盆地三角洲沉积相模型，确定盆地油气勘探重要领域。方法：利用大量钻井剖面，地震资料，岩性分析，测试成果，岩心观察和油气显示资料进行综合分析，研究了二连盆地３０个凹陷中扇三角洲的形成背影和沉特征。

Sedimentary Feature of Fan Delta in Erlian Basin

Based on a lot lithologic section,seismic data, Petrological analysis, test result, about thousand meter core observation and oil-gas showings and so on,comprehensive researh results show that fan delta sandstone-conglomerate bodys, formed on abrupt shore of small-scale down-faulted lake basin in Erlian Basin, have mtilti-source, near source, coarse fragment and sedimentary structure features of mainly on gensis of traction current and second on of gravity flow, it developed fan delta plain and so on three sub facies and ten micro facies. Finally summarized sedimentary features of fan delta, facies medle by built. This paper pointed out that reservoir oil bearing nature of front subwater channel micro facies is best,it is important domain oil-gas exploration in downfaulted lake basins.