四、油田可行性试验由于预测一个特定油层对注聚合物的反应如何几乎是不可能的,一般情况下需要进行油田注入试验。许多工程的经济效益严重受聚合物注入速率的影响。由于聚合物溶液比水粘,要保持相当的流率则必须提高井口压力。当压力达到最大的注入压力时,注入速率则将相应下降。由聚合物而增产的采油量可能被油田注入速率的降低而大大推迟。应该收集注入试验各阶段的数据,以便于此后全油田开展增注聚合物水驱工程。因此,除油井压力数据和注入速率外, Field Feasibility Tests It is almost impossible to predict how a particular reservoir responds to polymer injection. In general, field injection testing is required. The economics of many projects are severely affected by polymer injection rates. Since the polymer solution is more viscous than water, the wellhead pressure must be raised to maintain a comparable flow rate. When the pressure reaches the maximum injection pressure, the injection rate will decrease accordingly. Production from polymer production may be greatly delayed by a drop in the injection rate of the field. Data should be collected for all stages of injection into the trial to allow subsequent full-field polymer flooding projects. Therefore, in addition to the well pressure data and injection rate,