渤海油田储层保护效果评价方法探讨

A Discuss for Reservoir Protection Effect Evaluation Method in Bohai Oilfield

为降低油田开发过程中对油层的伤害程度,钻井和修井作业过程中使用了多种化学储层保护工作液和机械防污染措施。由于作业后生产制度存在变化(泵参数、油嘴、产层等),很难对储层保护效果进行全面有效的评价。针对渤海油田储层保护应用情况,探讨了生产恢复期、产液指数、不稳定试井和产量不稳定法四种储层保护效果的评价方法。结果表明,各方法都能根据油井特点及时有效的对储层保护效果进行评价,其中产量不稳定法无需任何其他测试,操作简单,具有一定的推广价值。

For mitigated the reservoir damage during developing period,many reservoir protection fluid and mechanical measures are applied in drilling and workover operation. As so many production parameters such as pump,nozzle,pay zone are changed after operation,it is difficult to evaluate the protection effect. According to the application of reservoir protection in Bohai oilfield,this paper investigated four reservoir protection effect methods whose are production return period,produced fluid index,transient test and production transient method have been discussed. The result shows that each method can evaluate the effect of reservoir protect timely and effectively for different wells based on features of oil wells,and the production transient method is simple without any other test and has spread value.