大庆油田喇南聚合物驱油提高采收率试验区的油井防蜡措施是采用热洗的方法，这种方法虽然操作简便，省时省力，但也有它的缺点。如耗费能源，污染地层，最重要的是影响产量，尤其是地层压力较低的井热洗时，当洗井液充满油套环空后，容易造成液柱压力大于井壁附近的地层压力。 Daqing Oilfield Ranan Polymer Flooding Enhanced Oil Recovery Oil well anti-wax test measures the area is the use of hot washing method, although this method is easy to operate, saving time and effort, but it also has its shortcomings. For energy-consuming and contaminated formations, the most important factor is the impact on production. In particular, when wells with low formation pressure are hot-washed, the pressure in the column is likely to be greater than the pressure in the formation near the borehole wall after the wash fluid is filled in the annulus.