濮城油田沙一段储层宏观非均质性及其对剩余油分布的影响

Reservoir Macro-heterogeneity in Es_1 of Pucheng Oilfield and Its Effect on Remaining Oil

储层的非均质性是影响油气藏油、气、水渗流及油气采收率的主要因素之一。因此,进行储层非均质性研究,找出其影响规律,对于搞清油藏剩余油的分布、采取合理性措施、提高采收率显得十分必要。利用测井多井评价资料求取的储层参数,结合岩心分析资料,对濮城油田沙一段储层层内、层间、平面非均质性进行了多角度的研究。结果表明:研究区整体上属于强非均质性储层,其储层非均质性受沉积环境和成岩作用控制,是影响注水开发效果的主要因素。

Reservoir heterogeneity was the main cause affecting the recovery factor and the percolation of water,oil and gas.So it was quite necessary to study the reservoir heterogeneity,find out the influence law,clarify the remaining oil distribution,take reasonable measures and enhance recovery factor.The intraformational,interlayer and plane heterogeneities of the reservoir were studied based on the reservoir parameters acquired in multi-well evaluation of logging data of drilling cores.The analyzed results show that the heterogeneity in the studied area is serious and it is controlled by sedimentary environment and diagenesis;it is the main factor of influencing the result of the reservoir waterflooding.