产油趋势法评价绒囊修井液在海上SZ36-1油田修井效果

绒囊修井液在SZ36-1油田C22井修井后,产液量下降,产油量上升,含水率下降。如何评价绒囊修井液储层伤害效果成为焦点。利用C22井修井前后10个月的产液量、产油量和含水率变化趋势,发现产油趋势分析法评价绒囊修井液修井效果比平均产液法更合适。产油趋势法可以详细分析修井前后产液量、产油量等参数的变化幅度及变化速率,对产量预测和制定合理的工作制度更有指导意义。用产油趋势法分析该油田另一口使用绒囊修井的F20井,较好地解释了修井后的产液、产油等现象,可以评价绒囊修井液对储层的伤害程度。

Evaluating the effect of fuzzy-ball workover fluid for offshore SZ36-1 Oilfield with oil production tendency method

After fuzzy-ball workover fluid was utilized in workover of Well C22 of SZ36-1 Oilfield, fluids production was decreased, oil production was increased and the watercut was reduced. How to evaluate reservoir damage by fuzzy-ball workover fluid has become a focal point. From fluid production, oil production and watercut trend 10 months before and after workover of Well C22, it was found that evaluating the effect of fuzzy-ball workover fluid for offshore SZ36-1 Oilfield using oil production tendency method is more suitable than average fluid production method. Oil production tendency method can analyze the rangeability of fluid production and oil production and rate of change before and after workover in detail, having a guiding significance for predicting oil production and formulating reasonable working system. Analyzing Well F20 with the oil production tendency method, another well in this oilfield worked over with fuzzy-ball fluid, better interpreted the fluid and oil production after workover, and could evaluate the extent of damage to the reservoir by fuzzy-ball workover fluid.