Y221-115 (Y221-115BD) and Y221-150 packers are used for blocking the water layer of the oil well and testing oil for the oil wells, and they can be independently used for blocking the oil reservoir.

31/2″EUE.59×17.5F Mid Joint	27/8″EUE.59×17.5F Mid Joint	31/2″EUE.59×17.5FCable protector
27/8″EUE.59×17.5FCable protector	Stuffing box	Sucker Rod Series
Tubing	Pumping Unit

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