Slip type underground restrictor with easy refloatation function

• Main Authors: XIAO SHUQIN, CHEN YONG, YANG XUDONG, WEI YAMING, LIU SHUANGQUAN, GUI JIE, WANG XIONGXIONG
• Format: Patent
• Language: Chinese; English
• Published: 21.12.2018
• 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 belongs to the technical field of underground tools for performing throttling and depressurization on high-pressure natural gas in natural gas well production, and particularly relates to a slip type underground restrictor with an easy refloatation function. The slip type underground r...