Oil swabbing and bailing are used as an oil production method for oil wells with low production.According to the needs of this oil production method, corollary wellbore swabbing tools are developed.

• 井筒抽汲捞油是各油田低产低能井普遍采用的一种采油方式,根据这种采油方式的需求,开发研制了配套井筒抽汲工具。