论文部分内容阅读
应用平面夹砂模型和微观防真模型研究了大庆油田碱 /表活剂 /聚合物三元复合体系驱油微观渗流机理 ,发现 ,所使用的复合体系具有降低油 /水界面张力、减小孔道中毛管力的作用 ;能够减小原油表面分子的内聚力 ,提高原油的变形能力和流动能力 ;能够使残余油乳化变形 ,易变形的油流渗流通过孔喉时被切割乳化 ,增加了原油的流动性 ,乳化后原油具有携带能力 ;在驱替过程中使油珠聚并形成富集油带 ;能够调节油 /水流度比 ,扩大波及面积 ;能够使残余油通过油桥连接、界面输运
The microscopic seepage mechanism of alkali / surfactant / polymer ternary system in Daqing Oilfield was studied by using plane sand gripping model and microscopic anti-fidelity model. It was found that the composite system used has the advantages of reducing the oil / water interfacial tension and reducing the pore size In the role of the capillary force; can reduce the cohesion of the surface of the crude oil molecules to improve the deformation and flowability of crude oil; can make the residual oil emulsion deformation, deformation of the oil flow through the pore throat when cut through the oil flow, increasing the flow of crude oil The crude oil has the capability of carrying along with the emulsion; the oil beads are aggregated and enriched in the oil during the displacement; the oil / water flow ratio can be adjusted and the spread area can be enlarged; the residual oil can be connected through a oil bridge and the interface transport