Catchable packer blocker

Abstract

The invention relates to a catchable packer blocker. The catchable packer blocker includes an upper joint (1), a catching rod (2), a slide sleeve (3), an adjustment cap (4), a rubber cylinder assembly (9), a slip bowl (10), a slip (11) and a main body (12); a steel ball (13) is arranged at the position where the slide sleeve (3) and the adjustment cap (4) are connected in a sleeved mode, the outer wall of the catching rod (2) is provided with an upper hole shrinkage section (21) matched with the steel ball, a plurality of pin shafts (14) are slidably mounted in pinholes of the upper end of an upper connecting sleeve (6) in the radial direction, and each hinge pin faces the end of an upper connecting sleeve (7) and is matched with a middle hole shrinkage section (22) at the outer wall of the catching rod (2), a plurality of slide pins (20) are arranged at the lower end of the rubber cylinder assembly (9), a lower shrinkage section (23) matched with each slide pin is arranged on outer wall of the catching rod (2), and a plurality of ejector rod (24) are mounted at the lower end of the rubber cylinder assembly (9) in the axial direction. The catchable packer blocker can not only block a packer, but also achieve deblocking by a reverse operation, and the operation effect of the packer is greatly improved.

Description

technical field [0001] The invention relates to a petroleum tool, in particular to an internal plug used for maintenance of oil and water wells in an oil field with pressure. Background technique [0002] In order to preserve formation energy and avoid environmental pollution, oilfields often adopt snubbing workover methods. During pressurized operation, the inner hole of the oil pipe needs to be sealed to prevent oil and water from leaking to the ground. At present, the method of plugging the inner hole of the packer is often used to plug the tubing, but during the plugging process, it is often encountered that the plugging fails, the plugging position is changed, and the plugging is stopped. After the operation is stopped midway, it is necessary to unseal the packer plug that has been in the plugging position and take it out of the ground, and the commonly used packer plugs are usually not reversed, nor can they be unsealed, which will greatly affect the operation effect ...

AI Technical Summary

Problems solved by technology

At present, the method of plugging the inner hole of the packer is often used to plug the tubing, but during the plugging process, it is often encountered that the plugging fails, the plugging position is changed, and the plugging is stopped

After the operation is stopped midway, it is necessary to unseal the packer plug already in the plugging position and take it out of the ground, and the commonly used packer plugs are usually not reversed, neither can be unsealed, which will greatly affect the operation effect

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