Packer in recycling oil well air drill

Abstract

The invention discloses a packer in a recycling oil well air drill. The packer in the recycling oil well air drill comprises an upper connector. The lower end of the upper connector is connected with a milling cylinder through external threads, a milling device is arranged at the lower end of the milling cylinder, and the lower end of the upper connector is connected with a connecting rod through internal threads. A water hole is formed in the connecting rod, and the position of the water hole corresponds to that of the milling device. A spear which is provided with a boss is in threaded connection with the lower end of the connecting rod and provided with a fastening screw. A gasket, a spring and a clamping tile which is provided with a clamping claw are sequentially sleeved on the spear, wherein a clamping tile seat is embedded between the clamping claw and the spear and connected with the spear through reverse threads. The spear is in threaded connection with a guide cone. Through holes which are same in size are formed in the upper connector, the connecting rod and the spear. The packer in the recycling oil well air drill is simple in structure, convenient to operate, and capable of solving the problems that under the condition of setting of the packer, the basal body of the packer is damaged and the pipe columns arranged at the lower end of the packer drop out, saving the operating time, improving the working efficiency and reducing the economic loss.

Description

technical field [0001] The invention relates to a device for recovering a packer in oil well gas drilling, and belongs to the technical field of oil well gas drilling and production devices. Background technique [0002] In oil well gas drilling and production operations, various packers are widely used, but during the operation, it is often encountered that the packer is hard to recover due to operational errors or other reasons. To carry out subsequent operations, it is necessary to recover the packer and open the passage behind. The usual method is to use grinding shoes to grind off the blocked part, the lower pipe string falls into the bottom of the well, and then the fishing spear is used to salvage the remaining pipe string. This operation can only be completed twice, which not only wastes time, but also The work efficiency is low, and the matrix of the packer is worn out, and the pipe string falls rapidly to the bottom of the well, causing great damage. Contents o...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a device for recovering the packer in oil well gas drilling with simple structure and easy operation, which has solved the problem that the current packer and connecting pipe string are not easy to recover, so as to overcome the deficiencies of the prior art

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