While-drilling reversing device

• Main Authors: WANG DENGBO, QIN XI, WU DONGSHENG, ZHOU XUCHENG, ZHANG BIN, ZHANG YONG, ZHANG YAOXIAN, QIN XINDE
• Format: Patent
• Language: Chinese; English
• Published: 21.02.2020
• 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 utility model relates to the technical field of drilling operation equipment. The device is a while-drilling reversing device. The device comprises an inverted pup joint, a leaking stoppage pup joint, a spring, a piston and an inverted part, the lower portion of the leaking stoppage pup joint is...