致密砂岩储层静态渗吸影响因素研究

Factors influencing spontaneous imbibition for tight oilreservoir

研究致密砂岩储层静态渗吸影响因素及规律,对于有效开发油气藏非常重要。本文通过实验研究了渗透率、温度以及裂缝对岩心静态渗吸的影响,结果表明渗透率越小,静态渗吸速率及程度越大;温度对静态渗吸的影响较小;与基质型岩心相比,裂缝型岩样静态渗吸速率较大且最终渗吸程度也较大。

Researches onfactors influencing spontaneous imbibition for tight reservoir is significant for effectively developing tight oil reservoirs.In this article,effects of permeability,temperature and fractures on spontaneous imbibitionof tight stone were researched.Test results indicate that spontaneous imbibition rate and final extent are greater for stones with lower permeability.Temperature affects spontaneous imbibition lightly.Compared with matrix cores,spontaneous imbibition rate and final extent for cores with fracture are greater.