Casing pipe dislocation horizontal well correction and repair method and dedicated integration tools of casing pipe dislocation horizontal well correction and repair

2011 
The invention discloses dedicated integration tools of casing pipe dislocation horizontal well correction and repair. The structure comprises a bottom expansion work room, an expansion combination sealing device, a propelling hydraulic cylinder device and a top anchoring device from top to down in sequence, and the bottom expansion work room, the expansion combination sealing device, the propelling hydraulic cylinder device and the top anchoring device are connected. A dislocated casing pipe in a horizontal section of a horizontal well can be corrected and repaired, the shortcoming that an existing dislocated casing pipe in a horizontal section of a horizontal well can not be corrected and repaired effectively is overcome, some abandoned wells and dried-up wells are revived, oil well yield is improved, service life of oil wells is prolonged, and input-output ratio of development cost is improved. The casing pipe dislocation horizontal well correction and repair method and dedicated integration tools of the casing pipe dislocation horizontal well correction and repair is characterized in that two processes of correction and casing pipe repair are combined. The casing pipe dislocation horizontal well correction and repair method and dedicated integration tools of the casing pipe dislocation horizontal well correction and repair omits a process of fixing bottom dislocation casing pipes, avoids secondary pollution of an oil layer, has simple construction process, reduces requirements for construction workers, and is beneficial to popularizing.
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