济阳坳陷缓坡带沉积模式及有利储集体分布研究

Study on sedimentary pattern and favorable reservoir distribution at the gentle slope of Jiyang depression.

在对各个缓坡带的主要目的层系发育的沉积相进行分析的基础上,重点解剖缓坡带下第三系碎屑沉积体系类型。分层序研究了缓坡带的沉积体系平面分布和垂向演化规律,并分析了不同沉积相和沉积体系与隐蔽圈闭发育位置和发育程度的内在联系。建立济阳坳陷不同类型缓坡带的沉积模式;确定了缓坡浊积扇、三角洲、扇三角洲和滨浅湖滩坝4种类型为缓坡带有利储集体。

Based on the sedimentary facies analysis of the main series of target strata for each gentle slope, the type of detrital sedimentary system of the Eogene under the gentle slope was researched as the key. Plane distribution and vertical evolutionary rule of the sedimentary system at the gentle slope were studied by sequence. At the same time, the internal relation was analyzed between different sedimentary facies or sedimentary systems and developed position or developed degree of subtle trap. Sedimentary patterns were built up for the different types of the gentle slopes in Jiyang depression. Four types of the favorable reservoirs at the gentle slope was established, those were turbidite fan of the gentle slope, delta, fan delta and shore beach bar.