Layered drainage and production wellhead device of coal-bed gas well

• Main Author: CHEN ZHONGLIANG
• Format: Patent
• Language: Chinese; English
• Published: 22.07.2022
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The utility model discloses a coal-bed gas well layered drainage wellhead device which comprises an upper four-way joint and a lower four-way joint, flat valves used for controlling coal-bed gas circulation are arranged on the four sides of the upper four-way joint, and second sealing covers used for sealing work are arranged at one ends of the flat valves on the left side and the right side and one end of the flat valve on the upper side. Flat valves used for controlling circulation of coal bed gas are arranged on the left side, the right side and the upper side of the lower four-way joint respectively, the length of the adjustable cross beam can be adjusted by operating the adjustable cross beam, the conveniently-detached clamping base and the adjustable supporting rod in the adjustable supporting frame, and the height of the adjustable supporting rod can be adjusted. And meanwhile, the conveniently-disassembled clamping seat can be disassembled and assembled, so that the conveniently-disassembled clamping