Clamping plate mechanism for processing deformed coiled tubing in well

Abstract

The utility model discloses a clamping plate mechanism for processing a deformed coiled tubing in a well, which belongs to the technical field of tubing clamping plates and comprises two clamping plates, each clamping plate is internally provided with two anti-falling grooves, and slip inserts are embedded in the anti-falling grooves. And the deformed coiled tubing is clamped by the slip insert. The coiled tubing pulling-out device is simple in structure and convenient to install, a deformed coiled tubing can be successfully pulled out at a wellhead under the condition that the coiled tubing falls into a well without being cut off, the clamping plate clamps the deformed coiled tubing through four bolts in cooperation with the high-strength slip insert, and reliability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pipe clamping plates, in particular to a clamping plate mechanism for processing deformed continuous oil pipes in wells. Background Art

[0002] During the continuous tubing operation, the continuous tubing may be deformed due to quality problems of the tubing itself, complex working conditions, or operational errors. The deformed tubing cannot pass through the blowout preventer, or can pass through the blowout preventer but not the blowout preventer box, causing it to get stuck when it is pulled up and cannot be lifted out of the wellhead normally. If the deformed continuous tubing can pass through the blowout preventer but cannot pass through the blowout preventer box, we can close the semi-closed gate of the continuous tubing, hang the slips, and observe that the suspension is normal. Then, we can disassemble the blowout preventer, cut off the deformed tubing, and use the connector to connect the continuous tubing to lift the continuous tubing out of the wellhead. If the deformed continuous tubing is severely deformed and cannot pass through the blowout preventer and cannot be connected to the tubing after hanging the slips, the shear gate is usually used to cut the tubing and then switch to the workover rig for salvage operations.

[0003] The existing salvage operation of cutting the oil pipe has the following problems: 1. Long cycle and high operation cost; 2. In the case of severe deformation of the oil pipe, there is no suitable salvage tool and the construction technology is difficult. Utility Model Content

[0004] The utility model aims to provide a clamping plate mechanism for handling deformed coiled tubing in a well to solve the above problem and to be able to remove the coiled tubing which is severely deformed and cannot be suspended by the suspension slips.

[0005] Technical solution: The utility model provides a clamping plate mechanism for handling deformed coiled tubing in a well, comprising: a clamping plate, the clamping plate has two pieces, each piece is provided with two anti-slip grooves, and the anti-slip grooves are embedded with slip teeth. The deformed coiled tubing is tightened by the slip teeth.

[0006] Furthermore, in the above-mentioned clamping plate mechanism for handling deformed coiled tubing in a well, a plurality of thread grooves are symmetrically arranged on the clamping plate.

[0007] Furthermore, in the above-mentioned clamping plate mechanism for handling deformed coiled tubing in a well, the two clamping plates are fixedly connected by four bolts. The two clamping plates are clamped by bolts, and the deformed coiled tubing is clamped with high-strength slip teeth, which has high reliability and strength.

[0008] Furthermore, in the above-mentioned clamping plate mechanism for treating a deformed coiled tubing in a well, stop pins are arranged on both sides of the slip teeth to fix the embedded slip teeth to prevent them from moving.

[0009] Furthermore, in the above-mentioned clamping mechanism for handling deformed coiled tubing in a well, the anti-slip groove is a trapezoidal structure with a narrow opening and a wide interior, thereby improving the effect of clamping the deformed tubing.

[0010] Furthermore, in the above-mentioned clamping plate mechanism for handling deformed coiled tubing in a well, the inclination angle of the bevel of the anti-slip groove is 17°.

[0011] Furthermore, in the above-mentioned clamping plate mechanism for handling deformed coiled tubing in a well, the depth of the anti-slip groove is 7.5 mm.

[0012] It can be seen from the above technical scheme that the utility model has the following beneficial effects: the clamping plate mechanism for handling the deformed continuous oil pipe in the well described in the utility model has a simple structure and is easy to install. The deformed continuous oil pipe can be successfully pulled out at the wellhead without cutting the continuous oil pipe and dropping it into the well. The clamping plate clamps the deformed continuous oil pipe through 4 bolts in combination with high-strength cava teeth, and has high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of a clamping plate mechanism for handling deformed coiled tubing in a well according to the utility model;

[0014] Figure 2 The utility model is a side view of a clamping plate mechanism for handling deformed coiled tubing in a well.

[0015] In the figure: a clamping plate 1, an anti-slip groove 2, a slip tooth 3, a thread groove 11, and a stop pin 31. DETAILED DESCRIPTION Example

[0016] like Figure 1-2 The illustrated clamping plate mechanism for handling deformed coiled tubing in a well comprises: a clamping plate 1, wherein the clamping plate 1 has two pieces, each piece is provided with two anti-slip grooves 2 inside, and slip teeth 3 are embedded in the anti-slip grooves 2.

[0017] In this embodiment, the clamping plate 1 is symmetrically provided with a plurality of thread grooves 11, and the two pieces of the clamping plate 1 are fixedly connected by four bolts. The two pieces of the clamping plate 1 are clamped by bolts, and the deformed coiled tubing is clamped with high-strength slip teeth 3, which has high reliability and strength.

[0018] In this embodiment, stop pins 31 are provided on both sides of the slip teeth 3 to fix the embedded slip teeth 3 to prevent movement.

[0019] In this embodiment, the anti-slip groove 2 is a trapezoidal structure with a narrow opening and a wide interior, and the inclination angle of the hypotenuse of the anti-slip groove 2 is 17°, thereby improving the effect of the clamping plate 1 in clamping the deformed oil pipe.

[0020] In this embodiment, the card plate 1 is 270 mm long and 180 mm wide, the anti-slip groove 2 is 7.5 mm deep, and the slip tooth 3 is arranged in the middle of the anti-slip groove 2 and is 130 mm long.

[0021] It should be noted that the above is only a technical solution of the utility model and is not a limitation. Although the utility model is described in detail with reference to the preferred embodiments, a person skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A clamping mechanism for handling deformed coiled tubing in a well, characterized by: The invention comprises a card plate (1), wherein the card plate (1) has two pieces, each piece is provided with two anti-slip grooves (2), and the anti-slip grooves (2) are embedded with slip teeth (3); a plurality of thread grooves (11) are symmetrically arranged on the card plate (1); and the two pieces of the card plate (1) are fixedly connected by four bolts.

2. The clamping mechanism for handling deformed coiled tubing in a well according to claim 1, characterized in that: Stop pins (31) are arranged on both sides of the slip teeth (3).

3. The clamping mechanism for handling deformed coiled tubing in a well according to claim 1, characterized in that: The anti-slip groove (2) is a trapezoidal structure with a narrow opening and a wide interior.

4. The clamping mechanism for handling deformed coiled tubing in a well according to claim 1, characterized in that: The inclination angle of the hypotenuse of the anti-slip groove (2) is 17°.

5. The clamping mechanism for handling deformed coiled tubing in a well according to claim 1, characterized in that: The anti-slip groove (2) has a depth of 7.5 mm.

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