水动力学理论在提高油田开发效率中的应用

Applying Hydrodynamic Theories to Enhance Exploitation Efficiency of Reservoirs

江汉油田已进入高含水开发后期,油层非均质性严重,三大矛盾日益加剧,地下存水率下降,水驱油效率越来越差,油田后期开发必须立足于低成本战略。提高油田开发效率最经济实惠的途径就是合理地运用水动力学理论。江汉油田实施水动力学方法成功的经验有:不稳定注水、降压开采、改变液流方向及调整低效油井工作制度保高产井。

Jianghan Oilfield has entered the middle and latter period of high water cut stage. The heterogeneity of the oil layer is serious. The three great antinomies has been turning worse increasingly. The rate of underground water storage decreases while the efficiency of the bringintooil is worse and worse.The exploitation of this latter exploitation period oil field must be based on the low cost strategy.Applying hydrodynamic theories is a best economic method to improve the efficiency of reservoirs . In this thesis , proceedingfrom the present condition of Jianghan oil field , the writer discusses four practical hydrodynamic methodsemphasisatically: water flooding unsteady , mining with decreased pressure , changing the direction of the liquid flow and adjusting the oil well work system which is inefficient. 