二连盆地蒙古林砾岩油藏微相特征及对开发的影响

Microfacies characteristics and their effects on development of Menggulin conglomerate oilfield in Erlian basin, China

综合运用岩心观察描述、分析化验、测井等资料,探讨了二连盆地蒙古林砾岩油藏沉积微相特征,并深入研究了不同微相的沉积特征、电性特征、储集特征及展布规律;结合生产动态分析及油水运移规律研究,就沉积微相对油水运动规律的影响等进行综合研究,探索剩余油分布规律及其影响因素。研究结果表明,该区发育辫状河三角洲平原、前缘亚相的五种沉积微相砂砾岩体,不同微相具有各自特色的岩性及储集条件;储层的含油性、砾岩体的分布等,乃至油水运移规律、剩余油分布等,均明显受到沉积微相的控制。

This paper discusses the sedimentary microfacies features of Menggulin pool in conglomerate by comprehensively using observation and analysis of core, data of log and researching sedimentary characteristics, log feature, reservoir feature and distribution of sedimentary microfacies. The authors research comprehensively the effect of sedimentary microfacies on the oil and water movement law and production state by means of analysis. The research result shows that there are abraided river delta plain, delta front, and so on. There are conglomerates of five sedimentary microfacies, and there are varieties of rocks and reservoir features in microfacies. The microfacies control oil-bearing content, distribution of conglomerate, even the movement law of oil and water, and distribution of remaining oil.