聚合物溶液收敛流动对油相界面拉拽作用的热力学分析  

Thermodynamic analysis of pull effect of polymer solution convergence flow on oil interface

作　　者：崔万军[1] 贾振岐[1] 陈静[2] 

机构地区：[1]大庆石油学院石油工程学院 [2]大庆油田有限责任公司采油工程研究院,黑龙江大庆163453

出　　处：《大庆石油学院学报》2005年第5期19-23,共5页Journal of Daqing Petroleum Institute

摘　　要：运用热力学理论研究油藏聚合物溶液微观驱油机理可以避免复杂的数学计算,更易于从本质上认识聚合物驱油相运移与水驱油相运移的差别.热力学能量守恒表明:聚合物溶液自由能增量是溶液压能、动能、位能及摩擦热的变化总量;聚合物溶液自由能增量是由聚合物溶液熵变产生的,它可以转化成油相界面自由能增量,使得聚合物溶液对油相界面产生一种拉拽作用;水驱毛管数理论不能满足聚合物溶液微观驱油效率的分析.聚合物驱较水驱有更高的微观驱油效率.Thermodynamic theory can save complex mathematic calculation in the studying on microcosmic oil displacement mechanism of polymer solution.It is easier to recognize the difference between the oil movement of polymer flooding and the oil movement of water flooding in essence.Thermodynamic energy conservation shows that the increase of polymer solution free energy is the total change of pressing energy,kinetic energy,potential energy and frictional heat.The increase of polymer solution free energy results from polymer solution entropy change.It can change into the increase of oil interface free energy and make polymer solution produce a kind of pull effect on oil interface.The water flooding capillary number theory(N=μv/γ) cannot meet the analysis of the microcosmic oil displacement efficiency of polymer solution.The polymer flooding has higher oil displacement efficiency than the water flooding.

关 键 词：聚合物 收敛流动 界面 自由能 拉拽作用 热力学 

分 类 号：TE357[石油与天然气工程—油气田开发工程]