In the light of the situation that the seal of the return flush Passage on the existing water injection packer is not ideal,the Model DQY341 - 114 hydraulic packer is developed.

• 针对油田现用可洗井注水封隔器反洗通道密封不够理想的问题，研制了DQY341-114新型水压缩式注水封隔器。