稠油油藏剩余油微观分布及其影响因素的试验研究

Experimental study on microdistribution of remaining oil and its influence element in heavy oil reservoir

以注蒸汽后稠油剩余油微观分布状态及其影响因素为目的，以实取岩心进行含油薄片鉴定及室内模拟试验结果为依据，提出剩余油主要以吸附在杂基表面形式滞留于细喉道连通的孔隙内，且其分布区域及含量与岩石热物性、敏感性及孔隙类型等密切相关。通过本次试验研究，不仅从理性上掌握了注蒸汽后剩余油微观分布状态，而且为剩余油分布及提高稠油采出程度提供了研究途径。

in order to understand microdistribution of remaining oil and its influence element in heavy oil reservoir after steam injection, based on oil--bearing thin--section analysis ofactual core and the result of indoor model test, this paper puts forward that remaining oil remains in pores connected by narrow throat mainly in the way of adsorbing on matrix surface,its distribution area and quantity are closely related to thermal physical characteristics, sensitivity, and pore types of rocks. Through this experimental study, microdistribution of remaining oil after steam injection is known theoretically, and thus provides the way of research for getting a clear understanding of distribution of remaining oil and improving recovery percent of heavy oil reserves.