Rotary sealing loading process and device for minor repair operation

Abstract

The invention discloses a rotary sealing loading process and device for minor repair operation. The device comprises a rotary sealer, a platform, a lifting hydraulic cylinder and a rotary clamping device, the rotary sealer is connected with a casing pipe four-way joint of a wellhead, the platform is fixed on the ground, the lower part of the lifting hydraulic cylinder is connected with the platform, and the rotary clamping device is connected with the upper part of the lifting hydraulic cylinder. The overhaul function is achieved through minor repair equipment, the defects and shortcomings ofa minor repair screw drill tool are overcome, the drilling torque can be effectively increased, the operation speed is increased, the operation cost is reduced, and the technical adaptability is improved.

Description

technical field [0001] The invention relates to oil production well operation equipment, in particular to a minor repair operation rotary seal loading process and device. Background technique [0002] Oilfield development has entered the middle and later stages, and various production process measures and maintenance operations of oil and water wells have been increasing. Due to factors such as casing deformation, sand production, wax deposition, and pipe string bending deformation in old oilfields, it is necessary to plug and channel channeling during maintenance of oil and water wells. Therefore, the construction process requires drilling plugs under pressure, sleeve grinding and milling, salvage and other processes, and the maintenance workload is heavy. [0003] Pipe string rotation and pressurization are required to implement plugging, casing milling, fishing and plugging in abandoned wells. Oilfields generally use screw drilling tools for overhaul or minor overhaul ope...

AI Technical Summary

Problems solved by technology

[0002] Oilfield development has entered the middle and later stages, and various production process measures and maintenance operations of oil and water wells have been increasing. Due to factors such as casing deformation, sand production, wax deposition, and pipe string bending deformation in old oilfields, it is necessary to plug and channel channeling during maintenance of oil and water wells. Therefore, the construction process requires drilling plugs under pressure, sleeve grinding and milling, salvage and other processes, and the maintenance workload is large

[0003] Pipe string rotation and pressurization are required to implement plugging, casing milling, fishing and plugging in abandoned wells. Oilfields generally use screw drilling tools for overhaul or minor overhaul operations. Problems existing in the current technology: (1) Overhaul operations The cost is high; (2) screw drilling tools are used for minor repairs. When the shallow plug is used, the drilling pressure cannot be applied, and the screw drilling tools cannot drill; in the inclined well section, the drilling tool will be partially idling due to the influence of the well body; Unclear pressure, unable to construct under pressure

[0004] After retrieving the patent documents, it is basically the screw drilling tool, so the technical problems to be solved by the present invention cannot be solved by the prior art

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