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在油田注采过程中 ,由于注采速度过高导致地层发生微粒运移 ,从而堵塞地层孔隙 ,使油气井产量急剧降低。在岩心速敏实验基础上 ,应用渗流力学和采油工艺等基本原理 ,将室内临界流速研究与油田开发相结合 ,建立了微粒运移堵塞预测数学模型。利用该模型对大庆龙虎泡油田部分油井进行了预测 ,结果表明金 191、金 393井存在一定程度的微粒运移损害。这与现场实际情况基本吻合
During the injection and production process in the oil field, due to the injection and production velocity is too high, particle migration occurs in the formation, blocking the pore of the formation and drastically reducing the production of oil and gas wells. On the basis of the core velocity hypersensitivity experiment, applying the basic principles of seepage mechanics and oil recovery technology, the critical flow velocity in the laboratory is combined with the oilfield development to establish the mathematical model of particle transport blockage prediction. The model was used to predict some wells in the Longhu foam oil field in Daqing. The results show that there is a certain degree of particle migration damage in Jin 191 and Jin 393 wells. This is consistent with the actual situation on the ground