Polished rod salvaging device

• Main Authors: WANG CHANGHAI, WANG YING, LUAN HAI, SHI HONGQUN, WANG GUOCHUN, ZHOU WEI, MA ZESHENG, CAO DIANYONG, LIU CHENG, JIANG HONG, CHEN XIN, WEI YUSHAN, XIAO CHANG, ZUO SONGBO, MA YAN, YOU WENJUN, YAO PENG, ZHAO YUFENG
• Format: Patent
• Language: Chinese; English
• Published: 24.08.2011
• 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 polished rod salvaging device for an oil production well, which comprises a connector, a block piece, a spring, slips, a slip installation slot and an salvaging barrel; the connector is connected with the salvaging barrel by a thread; the block piece and the spring are arranged in the connector from inside to outside; the two slips are arranged in the slip installation slot on the upper end of the salvaging barrel; the lower end of the salvaging barrel is in a slope body; when the polished rod salvaging device is used, the connector is connected with a section of sucker rod by the thread; the sucker rod is used for lowering, rotating and lifting the salvaging device; when a polished rod is attached on a pipe wall and can not be fished, the polished rod salvaging device for the oil production well can be firmly connected with the broken polished rod, so that the polished rod is fished very conveniently, and the construction can be completed without repairing the well; and the poli