Sucker rod overshot

• Main Authors: LI SHUJING, GAO XIANGLONG, ZHAO HAIZHEN, SONG GUANGLONG, ZHAO XINKAI, CHEN BAOYU
• Format: Patent
• Language: English
• Published: 11.11.2015
• 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 provides an upper portion is connected, and a salvage section of thick bamboo is opened has the strip body, that sucker rod overshot, the lower part and the salvage section of thick bamboo of top connection place a tooth piece in every fluting between the strip body, upper portion and the slip -ring of tooth piece weld integratively, and the external diameter of the external diameter of the ring that several tooth pieces are constituteed and salvage tin is the same, and there is a boss lower part of tooth piece processing single gear tooth on the boss, the lower part outside of tooth piece sets up outer circular conical surface, each body of the lower part of a salvage section of thick bamboo and the welding of lock tube upper end, there is the internal cone face on the upper portion of lock tube, and a salvage section of thick bamboo is opened has the strip body place a tooth piece in every fluting between the strip body, each is located all is the individual layer, therefore the external diameter can reduce, can salvage cracked sucker rod in inside lining oil pipe, and the outer circular conical surface that the spring of setting can make the lower part outside of tooth piece contacts with the internal cone face on the upper portion of lock tube all the time, and the tooth piece is caught to hold behind the sucker rod of being salvaged to bear and will be produced component down to the internal contraction, make its firmly block the sucker rod of being salvaged.