Wellhead device for high-energy jet multilateral well and use method of wellhead device

• Main Authors: YANG YU-SHEN, ZHU WEI, WANG WENSHENG, FAN YUBIN, WU YANHUA
• Format: Patent
• Language: Chinese; English
• Published: 17.02.2023
• 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 invention discloses a wellhead device for a high-energy injection multilateral well and a using method thereof, and relates to the technical field of oil well exploitation, the wellhead device comprises a sucker rod high-pressure sealer, an oil pipe four-way joint and an oil pipe rotator which are fixedly connected in sequence from top to bottom, and the three are coaxially arranged; the sucker rod high-pressure sealer comprises a hydraulic oil cylinder and a sealer which are fixedly connected up and down, the sealer comprises a shell and a rubber barrel, the rubber barrel is placed in an inner cavity of the shell, and a piston of the hydraulic oil cylinder vertically extends downwards from the bottom of a cylinder body and is used for extruding and sealing the rubber barrel; the oil pipe rotator comprises a rotating body and a central pipe, the central pipe is axially and rotatably mounted in an inner cavity of the rotating body through a bearing, and an anti-rotating mechanism is arranged on the oil pip