辽河油田地处北方地区,冬季气温低,注水井如遇到管线压力低以及注水井本身等原因不得不暂时停注时,放溢流是主要的防冻措施,但目前主要通过注水井的侧面闸门进行放空,容易使注水井井口总闸门附近发生冻堵,给恢复注水带来安全隐患,本文简要介绍了一种专门用于冬季放溢流时防止井口冻结的装置。 Liaohe Oilfield is located in the northern region, the winter temperature is low, the injection well in case of pipeline pressure is low and the injection well itself and other reasons have had to stop temporarily, the overflow is the main antifreeze measures, but at present through the injection well side gate It is easy to make the blockage near the gate of the well, and bring a potential safety hazard to the recovery waterfilling. This paper briefly introduces a device specially designed to prevent the wellhead from freezing when the overflow overflow is in winter.