Casing and fishing integrated device for drilling constant-pressure entrapment plugging tool fish
The invention relates to the technical field of underground fishing tools, and discloses a casing and fishing integrated device for drilling constant-pressure entrapment plugging tool fallen fish, which comprises an upper adapter connector, an upper casing milling barrel, a casing milling double-mal...
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| creator | WANG WENGANG TIE ZHONGYIN ZHENG CHANGQING WU YUJUN SUI SHENG WANG HANQING JIANG DINGCHUAN LUO HAN WU XIA LI YUYAO |
| description | The invention relates to the technical field of underground fishing tools, and discloses a casing and fishing integrated device for drilling constant-pressure entrapment plugging tool fallen fish, which comprises an upper adapter connector, an upper casing milling barrel, a casing milling double-male adapter, a casing milling outer barrel and a lower casing milling barrel which are connected in sequence, an inner retreating slip assembly for fishing fishes is arranged in the casing milling double-male adapter, the casing milling outer cylinder and the lower casing milling cylinder; one end of the inner rollback slip assembly is matched with the inner wall of the milling double-male adapter, and the other end of the inner rollback slip assembly is matched with a fishing section of a fish; the end, away from the casing milling outer cylinder, of the lower casing milling cylinder is connected with a casing milling alloy head used for milling fishes. And a cutting tooth section is arranged between the setting rub |
| format | Patent |
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| language | chi ; eng |
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| 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 |
| title | Casing and fishing integrated device for drilling constant-pressure entrapment plugging tool fish |
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