摘要：【中文】本发明提供一种基于稻壳灰协同稳定的强化泡沫体系，由以下重量份的组分组成：阴离子表面活性剂0.6～0.8份，稻壳灰颗粒0.5～2份，水100份。本发明使用阴离子表面活性剂与稻壳灰颗粒制备得到稳定的泡沫体系，增加了稻壳灰颗粒的疏水性能，能够不可逆的吸附到气泡界面液膜上，并且通过凝絮作用，在界面上形成一层致密层，增加了泡沫液膜的粘弹性，降低了泡沫的排液以及气体扩散。稻壳灰中部分残留的未被分解的木质素和纤维素具备桥接支撑作用使得泡沫的稳定性提高。稻壳灰的加入可以增强泡沫体系液相的粘度，从而增加泡沫的液膜厚度，在驱替过程中可以降低气体流度，减缓气窜的发生，提高采收率。 【EN】The invention provides a reinforced foam system based on rice hull ash synergistic stabilization, which is composed of the following components in parts by weight: 0.6-0.8 part of anionic surfactant, 0.5-2 parts of rice hull ash particles and 100 parts of water. According to the invention, the stable foam system is prepared by using the anionic surfactant and the rice husk ash particles, the hydrophobic property of the rice husk ash particles is increased, the stable foam system can be irreversibly adsorbed on a bubble interface liquid film, and a dense layer is formed on the interface through flocculation, so that the viscoelasticity of the foam liquid film is increased, and the liquid discharge and gas diffusion of foam are reduced. The part of the residual lignin and cellulose in the rice hull ash which are not decomposed has bridging and supporting functions, so that the stability of the foam is improved. The addition of the rice hull ash can enhance the viscosity of a liquid phase of a foam system, so that the thickness of a liquid film of foam is increased, the gas fluidity can be reduced in the displacement process, the occurrence of gas channeling is slowed down, and the recovery ratio is improved.

摘要：【中文】一种考虑孔喉受限机理的致密油藏流体模拟方法，包括：建立流体相平衡简化模型：确定假设条件；状态方程修正；毛管力计算；吸附量计算；相平衡计算。还公开在注气开发模拟中的应用方法。本发明通过修正状态方程，较为精确的获得致密储层中流体在地层条件下的临界物性，如临界压力和临界温度。通过结合毛细管力及吸附行为，改进了致密储层流体闪蒸计算模型，采用牛顿迭代方法求解致密储层条件下两相流体相平衡，准确预测计算致密多孔介质中毛细管力及吸附量。模型计算结合油藏数值模拟软件，为致密油藏注气开发模拟提供了更简洁且准确的方法，为优选致密油藏有效开发模式提供便利。 【EN】A tight reservoir fluid simulation method that accounts for pore-throat restriction mechanisms, comprising: establishing a fluid phase balance simplified model: determining a hypothesis condition; correcting a state equation; calculating the capillary force; calculating the adsorption amount; and (5) phase balance calculation. Methods of use in gas injection development simulations are also disclosed. According to the method, the critical physical properties of the fluid in the compact reservoir under the stratum condition, such as critical pressure and critical temperature, are accurately obtained by correcting the state equation. By combining capillary force and adsorption behavior, a compact reservoir fluid flash evaporation calculation model is improved, the phase balance of two-phase fluid under the condition of a compact reservoir is solved by adopting a Newton iteration method, and the capillary force and the adsorption quantity in the compact porous medium are accurately predicted and calculated. The model calculation is combined with numerical reservoir simulation software, a simpler and more accurate method is provided for gas injection development simulation of the tight reservoir, and convenience is provided for optimizing an effective development mode of the tight reservoir.