丘陵油田三间房组注水开发效果影响因素分析

Analysis of Influence Factors to Water Injection Development Effects of Sanjianfang Reservoir in the Qiuling Oilfield

利用岩石铸体薄片、压汞和物性分析资料等,对丘陵油田三间房组储层岩石学特征、沉积特征、微观孔隙结构以及成岩相进行了深入研究。在此基础上,从多角度出发分析了影响丘陵油田三间房组储层注水开发效果的因素。研究表明:1)不同沉积微相储层注水开发效果存在较大差异;2)油藏注水开发效果在一定程度上受区域局部构造的控制;3)孔隙结构越复杂,孔径越小,注水开发效果越差;4)不同成岩相组合控制了储层发育特征和储集物性,其注水开发效果不同。因此,丘陵油田三间房组储层注水开发效果是主力微相、微构造、微观非均质性、成岩相等多因素共同作用的结果。

Petrology characteristics,sedimentary characteristics,microscopic pore structure and diagenetic facies of Sanjianfang reservoirs in the Qiuling oilfield in Turpan-Hami Basin have been studied using rock thin sections,casting thin sections,physical property and mercury injection data. Based on these,the influence factors to water injection development effects in this area have been analyzed from multiple aspects. Research shows ： 1） The effects of water injection development exists have large differences in different sedimentary micro facies. 2） To a certain extent,the effect of water injection development is controlled by the regional local structure. 3） The more complex the pore structureis and the smaller the pore diameteris,the worse the development effect of low permeability reservoirsis. 4） The reservoirs development characteristics and the physical property are controlled by combined different diagenetic facies,and the effect of water injection development is also different. Therefore,the effect of water injection development is the result of coupled multi-factors including the main microfacies,micro structure,the microscopic heterogeneity,and diagenetic facies in the Sanjianfang oil reservoirs of Qiuling oilfield.