定量荧光技术在低孔低渗储集层中的应用研究

Application study for quantitative fluorescence technique in low porosity and low permeability reservoir

该文介绍了采用定量荧光录井技术,通过油性指数(Oc)、孔渗性指数(Ic)、总质量浓度C总等参数,对开鲁盆地低孔渗储集层油气显示进行判别所取得的成效。研究表明:定量荧光技术不仅提高了油气显示的发现率,而且适用于油田进入勘探中后期调整井施工中“难、深、薄、低”油层由于大量添加剂的加入,所造成的荧光录井及储集层解释困难的状况。定量荧光技术实现了荧光录井由定性向定量化的转变,为今后各类储集层研究及完善油气层解释打下了良好的基础。

The paper introduced the achievement obtained in low porosity and low permeability reservoirs of Kailu basin with the method of discriminating oil-gas shows, which adopted quantitative fluorescence logging technique, the parameters of oil property index( O_c) , porosity and permeability index(I_c), total mass concentration and so on. The study showed that the quantitative fluorescence technique not only increased discovery rate of oil-gas shows , but also was suitable for solving the difficulty in fluorescence logging and reservoir interpretation, which was caused by a vast amount of additive added to difficult, deep, thin and low oil layers during the operation of the adjusting well when oilfield got into the later stage of exploration. The quantitative fluorescence technique realized the change of fluorescence logging from qualitative to quantitative, therefore laying down good basis for the coming various reservoir study and improving oil-gas interpretation.