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向强烈非均质地层中注入非牛顿液进行二次或三次采油可以较大地提高原油采收率,另外某些裂缝性油田产液本身就呈现显著的非牛顿液特征,因此天然裂缝地层中非牛顿液不稳定渗流规律的研究具有重要理论意义和实用价值。 本文给出一种关于天然裂缝地层中指数式非牛顿液不稳定径向流的数学模型,给出井定产条件时若干重要边界条件下的解析解,并用IRIS—60型电子计算机进行了数值反演和数值积分计算,还给出了具有矿场实用价值的短肘及长时渐近解。最后具体讨论了这一研究成果的应用。
The injection of non-Newtonian fluids into a strongly inhomogeneous formation for secondary or tertiary recovery can greatly increase the oil recovery rate. In addition, the production of some fractured oilfields shows significant non-Newtonian characteristics, The study of Newtonian instability seepage law has important theoretical significance and practical value. In this paper, a mathematical model of exponential non-Newtonian fluid-instability radial flow in natural fractured formations is given. The analytic solution is given under some critical boundary conditions. The IRIS-60 electronic computer numerical inversion It also gives the short elbow and the long-term asymptotic solution with the practical value of the mine. Finally, the application of this research result is discussed in detail.