Salvage throwing equipment and MWD (measurement while drilling) instrument

• Main Authors: JIANG YAFENG, HAN ZELONG, CHOI SUK YOUNG, CHEN GENLONG, REN QIWEI, ZHAO MING, NIU QINGLEI, CHEN XIAOJUN, SONG GANG, ZHANG XIN, TIAN YINGYING
• Format: Patent
• Language: Chinese; English
• Published: 12.03.2024
• 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 salvaging and throwing device and an MWD (measurement while drilling) instrument, and relates to the technical field of underground salvaging devices, the salvaging and throwing device comprises a salvaging device, the salvaging device comprises a base, two salvaging hooks and an elastic connecting piece; the fisher in the fishing and throwing equipment conducts traction fishing through the steel wire rope, the fisher is driven by mud pressure to move downwards, and the aim of catching a fishing spearhead can be achieved through the arrangement mode of the fishing hook in the fisher without rotating the fisher. When the inner drilling tool needs to be put down, after the inner drilling tool is put down in place through the fisher, the inner drilling tool is released through the fishing hook by putting down the unfreezing device and utilizing mud pressure, and then the purpose of putting down the inner drilling tool is achieved. The invention further provides an MWD (measurement while