Ground throttling device

• Main Authors: QI YUANYUAN, YUAN CHANGZHONG, LIN ZHONGCAN, CHEN YUNFENG, LIN BENCHANG, ZHENG HAIBO
• Format: Patent
• Language: Chinese; English
• Published: 19.01.2021
• 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 provides a ground throttling device which comprises a throttling device body, the throttling device body carries out throttling and pressure reduction on natural gas flowing through thethrottling device body, it is guaranteed that the temperature of the natural gas is always located above the critical temperature of natural gas hydrate, the throttling device body comprises a plurality of throttling orifice plates, and the throttling orifice plates are communicated with the throttling orifice plates. The throttling orifice plates are arranged at intervals in a preset distance, and each throttling orifice plate is provided with a throttling orifice. High-pressure natural gas at the mouth of the natural gas well reaches a low-pressure external conveying pipeline under the condition that throttling is achieved after the high-pressure natural gas passes through the ground throttling device and no natural gas hydrate is generated, operation is easy, cost is low, and the gathering and conveying technol