Description (1) API-TH(B)M, mechanical support at the bottom, thick barrel wall; (2) API-TH(B)C, leather cup support at the bottom, thick barrel wall; (3) The tubing pump barrel assembly is directly connected and fixed to the tubing string and goes down to the bottom of the well. The plunger assembly is connected to the sucker rod and down into the bottom barrel position, and reciprocates up and down with it, so as to realize the oil recovery process (4) In the process of oil production, when there is a problem between the moving valve pair and the fixed valve pair, the valve pair can be lifted out with the extractor through sucker rod and plunger instead of pulling the whole pumping combination and tubing string out of the well, which reduces the labor and cost of the operation.