低渗透油田增产措施效果评价

低渗透油田储层物性差、产能低，通过压裂措施与堵水措施相结合，可以实现控制产量递减、减缓含水上升的目的。应用数值模拟软件模拟未压裂条件下产油量变化，考虑压裂效果叠加，推导出计算压裂增油量的数学公式，该公式能够确定压裂增油量的变化规律以及对产量递减的影响；模拟未堵水条件下产液量、产油量变化，计算堵水措施对全区产油量以及含水率的影响。压裂能够减缓当年产量递减，在之后的有效期内加快产量递减；堵水的增油有效期小于降水有效期，在增油有效期内降水幅度较大。

Effect of Stimulation Means on Low Permeable Oil Fields

The low permeable oil fields have the characteristics of poor reservoir property and low capacity. Production decline and slow water cut rising can be controlled through fracturing measures combined with water plugging measures. Oil production change without fracturing is simulated using numerical simulation software. Considering the fracturing effect overlay, mathematical formula is deduced for computing the fracturing increased amount of oil. The formula can determine the fracture increased quantity of oil change rule and influence on the production decline. Fluid volume and oil changes under the condition of no water plugging are also simulated. So, the influence of water plugging measures for the moisture content of the oil produced can be calculated. The production decline can be slow down by fracturing, while the production decline in the period of validity is speed up. Water plugging for the validity of oil increase is less than the validity of precipitation. The scope of precipitation is bigger within the validity period of the oil increase.