This invention discloses a
wellhead depressurization gas production device, relating to the field of
natural gas extraction technology, which solves the technical problem of existing
oil pressure affecting gas well production. The device includes a suction inlet connection
assembly, a working cylinder, and a
discharge outlet connection
assembly connected in sequence. The working cylinder includes a separation joint, a parameter adjustment
assembly, and a limiting short-circuit connected in sequence. A venting groove communicating with the parameter adjustment assembly is opened in the middle of the separation joint near its end. A
discharge joint is sleeved on the limiting short-circuit. A suction port is opened on the outer wall of the parameter adjustment assembly. A power gas inlet connection assembly is vertically connected to the separation joint, and the power gas inlet connection assembly communicates with the venting groove. The separation joint has a suction through-hole along a direction parallel to the axis, with one end communicating with the suction inlet connection assembly and the other end communicating with the gap between the borehole outer cylinder and the parameter adjustment assembly. This invention can reduce
wellhead oil pressure, thereby reducing bottomhole flowing pressure, amplifying pressure differential, and increasing gas well production.