鄯勒油田最小混相压力实验研究

Experimental Study on Minimum Miscible Pressure in Shanle Oilfield

细管实验测定最小混相压力MMP较准确的方法之一。实验利用细管测定鄯勒西山窑组油藏伴生气与油藏原油的最小混相压力,为油藏注入压力的选择提供依据。实验结果表明,该油藏的最小混相压力是30.89MPa。鄯勒油藏目前地层压力和饱和压力分别为30.89MPa和15.21MPa,因此,结合目前地面、地下实际情况,鄯勒油藏注伴生气驱替可以实现混相。

The slim tube experiment is a more accurate method to determine the minimum miscible pressure （MMP）. The experiment uses slim tube to measure the MMP between associated gas and crude oil of Xishanyao formation oil reservoir in Shanle oilfield, providing references for the choice of injection pressure. The experimental results show that the MMP of the oil reservoir is 30.89 MPa. The current formation pressure and saturation pressure of Shanle oil reservoir are 30.89 MPa and 15.21 MPa respectively. Therefore, combined with the actual situations, both surface and subsurface, the miscible flooding can be achieved by associated gas drive in Shanle oil reservoir.