Ground throttling device

• Main Authors: QI YUANYUAN, YUAN CHANGZHONG, LIN ZHONGCAN, CHEN YUNFENG, LIN BENCHANG, ZHENG HAIBO
• Format: Patent
• Language: Chinese; English
• Published: 11.08.2020
• 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, wherein the throttling device body carries out throttling and pressure reduction on natural gas which flowsthrough the throttling device body, and the temperature of the natural gas is guaranteed to be still a natural gas hydrate critical temperature or above all the time; the throttling device body comprises a plurality of throttling pore plates; the throttling pore plates are arranged at intervals according to preset distances; and each throttling pore plate is provided with throttling pores. According to the ground throttling device, after the high-pressure natural gas of a natural gas well mouth passes through the ground throttling device, a purpose that the high-pressure natural gas reaches alow-pressure external transmission pipeline is realized under a situation that no natural gas hydrates are generated while throttling. The ground throttling device is simple to operate, has a low cost and simplifies a gatheri