Reposition of redundant personnel nipple joint

• Main Authors: ZHOU YUCANG, QIN DU, LONG ZHIPING, ZOU KUAN, CAO JIANSHAN, HE QING, LI CAN, ZHU ZHICHAO, SHEN JIANZHONG, HU JINKE, FAN HUA, LI BOYAO, WANG HONGLIANG, YIN ZHONGHUA
• Format: Patent
• Language: Chinese; English
• Published: 15.02.2019
• 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 discloses a reposition of redundant personnel nipple joint, it sets up the last external wall of outer tube that runs through under to of a plurality of follows on the outer tube side wall between upper and lower two sections drilling rods to install, along circular arrangement, to the lower crescent water conservancy diversion hole in aperture on the follow, it has a plurality of drainage holes of running through the sliding sleeve lateral wall to distribute on the sliding sleeve lateral wall, drainage hole when increasing along with drilling fluid pressure on the sliding sleeve lateral wall can feed through with the last water conservancy diversion hole to lower different apertures of follow on the outer body, the incremental is pursued to the hole count of intercommunication down, the aperture is crescent, outside tilt up's water conservancy diversion hole makes the drilling fluid have ascending direction to the exteenal reflux, put forward high pH drilling fluid backward flow ability, re