Fixed throttler gland of high-pressure Christmas tree

• Main Authors: LIU SHOUCHAO, XU MING, ZHANG ZHIGANG, LIU YAOYU, YU XUFAN, BAI HONGHAI
• Format: Patent
• Language: Chinese; English
• Published: 05.04.2024
• 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 relates to a high-pressure Christmas tree fixed type throttler gland which comprises a large gland body, a small gland body, a small gland body, a small gland body and a large gland body, the large gland body is provided with a center round hole, the center hole comprises a large-diameter section and a small-diameter section which are coaxial and connected, and internal threads of the large-diameter section are used for being connected with the end of a fixed type throttler; the large gland screwed plug is cylindrical and is provided with a pressure relief channel communicated with the central round hole of the large gland body and a connecting hole communicated with the pressure relief channel, the connecting hole is provided with internal threads, the outer wall of the large gland screwed plug comprises a sealing section and a connecting section, and a sealing piece is arranged outside the sealing section; the pressure relief plug is provided with a penetrating tail end channel, the diamet