Nitrogen accelerator and acceleration method thereof

• Main Authors: WU YUANXIU, WANG LING, HUAN JIAMEI, CHEN XINMIN, LU CHAO, YAN XIJIAO, WANG YI, SHEN CHIWEI, ZHANG ZELI, XIA XIAOBO, YANG TINGHUA, DENG PING
• Format: Patent
• Language: Chinese; English
• Published: 08.04.2022
• 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 nitrogen accelerator and an acceleration method thereof.The nitrogen accelerator comprises an internal moving pipe fitting and an external non-moving pipe fitting, the internal moving pipe fitting comprises an upper connector, a connecting sleeve, a mandrel and a piston, the upper connector is in threaded connection with the upper end of the connecting sleeve, and the lower end of the connecting sleeve is in threaded connection with the upper end of the mandrel; a piston is fixedly connected to the outer wall of the mandrel; the external non-moving pipe fitting comprises an inner spline sleeve, an upper cylinder barrel, a lower cylinder barrel and a lower connector, the lower end of the inner spline sleeve is in threaded connection with the upper end of the upper cylinder barrel, the lower end of the upper cylinder barrel is in threaded connection with the upper end of the lower cylinder barrel, and the lower end of the lower cylinder barrel is in threaded connection with the lower c