Constant-displacement pump-passing dosing lifting process

The invention discloses a constant-displacement pump-passing dosing lifting process. The constant-displacement pump-passing dosing lifting process is characterized in that a medicament required to be added is injected into a medicament storage tank of a multifunctional medicament adding device, a metering pump is opened, and the dropping displacement is adjusted according to the pre-optimized dropping amount; the medicament is pressurized by the metering pump, is then injected into a tee joint, a single-flow hollow sucker rod, a plunger and a rotational flow mixing device through a high-pressure hose, and finally enters into an oil pipe through a releaser of the rotational flow mixing device; the rotational flow mixing device is driven by the plunger to do up-down motion; a main rotary vane of rotary vanes is impacted by liquid flow to rotate and drive a secondary rotary vane to rotate; the secondary rotary vane stirs well fluid, so that the medicament and the well fluid are fully mixed to form a mixed solution; finally, the mixed solution is drained to the ground by an oil well pump along an annular space formed by a rod and a tube. According to the constant-displacement pump-passing dosing lifting process disclosed by the invention, the functions of automatic constant-displacement addition, active mixing of the medicament and produced fluid, weight increasing after passing pump and the like are realized.