鄂尔多斯盆地曹凡峪地区长6储层非均质性研究

Heterogeneity Research of Chang 6 Reservoir in Caofanyu Area of Ordos Basin

曹凡峪地区位于陕西省延安市甘泉县境内,劳山乡西北侧,研究区面积约30km2,是劳山油田主要开发区块之一,主要开采层位为长6油层。曹凡峪地区延长组长6储层发育于三角洲前缘,为低孔低渗储层。通过岩心物性分析、薄片鉴定、录井、测井等资料,对曹凡峪地区长6储层的层间、层内及平面非均质性进行研究,认为研究区长6油层展布主要受沉积相控制,储层非均质性强,要对该类储集层采取有效改造措施,以达到开发区整体高效稳产的注水开发效果。

Caofanyu is located in northwest of Laoshan Township, Ganquan County, Yah＇an City, Shaanxi Province, the area is 30km2 in the study area. It is one of the major development blocks of Laoshan oil field. The chang 6 reservoir is the main producing position. The Chang-6 reservoir of yanchang group at Caofanyu is a depositional sandbody, and it is the lower porosity and permeability sandstones. By physical property analysis, thin section analysis, borehole log, well logging were applied to analyze the inter-layer, intra-layer and the flat heterogeneity of Chang 6 reservoir in Caofanyu area. The results show that, the Chang 6 reservoir distribution was controlled by sedimentary facies, and the reservoir has a strong heterogeneity. We should take measures to this reservoir to achieve the effect that the development area were developed efficiently and steady.