The invention discloses a
plunger gas-lifting draining device used for a horizontal gas well and a production method. The device comprises a self-buffering
plunger and a uniflow device which are arranged in an oil
pipe, the
oil pump comprises two sections of pipelines who have different
pipe diameters and are connected by a reducing short section, the self-buffering
plunger is arranged in the part, which is located at the upper part of the reducing short section, of the pipeline, the uniflow device is used for controlling a gas liquid to flow unidirectionally from bottom to top and arranged inthe part, located at the lower part of the reducing short section, of the pipeline, the shaft accumulated fluid can be lifted to the upper part of the uniflow device by the own energy of the gas well, is delayed, and is lifted to the well mouth by the aid of the self-buffering plunger, and drainage production is completed. A downhole tool of an existing plunger device is simplified; the functionof gas liquid unidirectional flow is realized by the uniflow device, the structure is simple and easy to put and slave, the own
lifting capacity of the gas well is effectively utilized, the shaft accumulated fluids of the horizontal gas well bottom part inclined shaft part and horizontal section are lifted, the shaft
liquid column height is reduced greatly, the gas yield is increased, and the horizontal gas well draining gas production difficulty is effectively solved.