CN214697763U - Paste stifled pipe convenient to back-off - Google Patents

Abstract

The utility model relates to an oil recovery equipment field, concretely relates to stifled pipe of subsides convenient to back-off. Including the body, a plurality of inverted V-shaped grooves have been seted up to the body lower extreme, have all seted up the rectangular channel on the body of inverted V-shaped groove top, and the rectangular channel communicates with the inverted V-shaped groove of its below, sets up flutedly on the last cell wall of rectangular channel, and the rectangular channel internal fixation has the pivot, rotates in the pivot and is provided with the rotor plate, and the rotor plate upper end is fixed with the dead lever, and in the dead lever upper end extended to the recess, the dead lever passed through spring coupling with the cell wall of recess. The utility model discloses, simple structure, convenient operation, the frictional force of pasting stifled pipe lower extreme and sand face is big, conveniently pastes stifled pipe and rotates the back-off, can right the direction to pasting stifled pipe at the in-process of going into the well, conveniently pastes stifled pipe and goes into the well.

Description

Paste stifled pipe convenient to back-off

Technical Field

The utility model relates to an oil recovery equipment field, concretely relates to stifled pipe of subsides convenient to back-off.

Background

The composite plugging process includes setting the plugging pipe to preset position, injecting high pressure plugging agent into the annular space and stratum of the casing and the plugging pipe to constitute double-layer plugging barrier of the plugging agent and the plugging pipe and to reach the aim of plugging and reinforcing the leakage section of the casing. The method aims to improve the operation efficiency of a field test, makes a construction process flow, analyzes main reasons aiming at problems in sticking and plugging construction, provides an optimization research idea, develops research works such as the design of a back-off tool, the optimization of a new sand filling process, the design of narrow-spacing centralizing measures and the like, and achieves a good effect through the application of the field test.

In the field construction process, the problem that the back-off is uncertain is found, and the sticking pipe is placed on the sand surface and is reversed, so that the sticking pipe slips on the sand surface, and the problem that whether the sticking pipe is reversed can not be judged. For example, if the plugging of a salt 46-42 well is carried out for 40 minutes, the success of the reversing cannot be judged. When the rotary back-off is carried out, the sticking and blocking pipe is planar, so that the sticking and blocking pipe is easy to slip at a sand surface position to cause idle rotation during rotation, and the back-off is not easy. Mainly, the friction force between the plane of the sticking and blocking pipe and the sand surface is small, so that the sticking and blocking pipe is pressed into the sand surface, the force is insufficient, and the method of increasing the axial load fed by the workover rig by only increasing is not a reasonable method.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a frictional force of pasting stifled pipe lower extreme and sand face is big, conveniently pastes stifled pipe and rotates the back-off, simple structure's the stifled pipe of pasting of back-off of being convenient for.

In order to realize the purpose, the utility model provides a technical scheme is:

the utility model provides a paste stifled pipe convenient to back-off, includes the body, and a plurality of inverted V-arrangement grooves have been seted up to the body lower extreme, have all seted up the rectangular channel on the body of inverted V-arrangement groove top, and the rectangular channel communicates with the inverted V-arrangement groove of its below, sets up flutedly on the last cell wall of rectangular channel, and the rectangular channel internal fixation has the pivot, rotates in the pivot and is provided with the rotor plate, and the rotor plate upper end is fixed with the dead lever, and the dead lever upper end extends to in the recess, and the dead lever passes through spring coupling with the cell wall of recess.

Specifically, a plurality of V type grooves of falling set up according to the axle center circumference equipartition of body.

Specifically, the one end of rotor plate towards the body center is located the rectangular channel and falls V type inslot, and the rotor plate is the arc towards the outside one end of body, and the rotor plate extends to the body outside towards the outside one end part of body.

Specifically, the dead lever tightly supports the recess cell wall that is close to the body center, and the spring is fixed on the dead lever, and the one end that the dead lever was kept away from to the spring tightly supports the recess cell wall of keeping away from the body center.

Specifically, the rotating plate is in sliding contact with a vertical groove wall of the rectangular groove.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses, simple structure, convenient operation, the frictional force of pasting stifled pipe lower extreme and sand face is big, conveniently pastes stifled pipe and rotates the back-off, can right the direction to pasting stifled pipe at the in-process of going into the well, conveniently pastes stifled pipe and goes into the well.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged view of the area a in fig. 1.

Detailed Description

As shown in figure 1-2, a plugging pipe convenient for back-off comprises a pipe body 1, wherein the lower end of the pipe body 1 is provided with a plurality of inverted V-shaped grooves 2, the inverted V-shaped grooves 2 are uniformly distributed according to the axis circumference of the pipe body 1, the pipe body 1 above the inverted V-shaped grooves 2 is provided with a rectangular groove 3, the rectangular groove 3 is communicated with the inverted V-shaped grooves 2 below the rectangular groove 3, the upper groove wall of the rectangular groove 3 is provided with a groove 4, a rotating shaft 7 is fixed in the rectangular groove 3, the rotating shaft 7 is rotatably provided with a rotating plate 8, one end of the rotating plate 8 facing the center of the pipe body 1 is positioned in the rectangular groove 3 and the inverted V-shaped grooves 2, one end of the rotating plate 8 facing the outside of the pipe body 1 is arc-shaped, one end of the rotating plate 8 facing the outside of the pipe body 1 extends to the outside of the pipe body 1, the rotating plate 8 is in sliding contact with the vertical groove wall of the rectangular groove 3, the upper end of the rotating plate 8 is fixed with a fixing rod 6, the upper end of the fixing rod 6 extends to the groove 4, the dead lever 6 passes through spring 5 with the cell wall of recess 4 and is connected, dead lever 6 tightly supports the 4 cell walls of recess near body 1 center, and spring 5 is fixed on dead lever 6, and the one end that dead lever 6 was kept away from to spring 5 tightly supports the 4 cell walls of recess far away from body 1 center.

The utility model discloses during the use, axial load when the workover rig applys is regular, design 1 lower extreme of body into the cockscomb structure, can improve the coefficient of friction of body 1 in the sand bed, and simultaneously, through setting up rotor plate 8, rotor plate 8 can be right it down at 1 time of pipe fitting, when meetting the stuck point, rotor plate 8 can revolute 7 internal rotations to body, thereby make the passing through stuck point that body 1 can be smooth, the smooth down of body 1 has been guaranteed, body 1 lower extreme inserts the back in the sand bed, when back-off, rotor plate 8 can increase the resistance of sand bed to body 1, consequently, can guarantee timely thorough back-off.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (5)

1. The utility model provides a paste stifled pipe convenient to back-off, includes the body, its characterized in that, a plurality of inverted V-arrangement grooves have been seted up to the body lower extreme, have all seted up the rectangular channel on the body of inverted V-arrangement groove top, and the rectangular channel communicates with the inverted V-arrangement groove of its below, sets up flutedly on the last cell wall of rectangular channel, and the rectangular channel internal fixation has the pivot, rotates in the pivot and is provided with the rotor plate, and the rotor plate upper end is fixed with the dead lever, and in the dead lever upper end extended to the recess, the dead lever passed through spring coupling with the cell wall of recess.

2. The patch tube convenient for reverse buckling of claim 1, wherein the inverted V-shaped grooves are uniformly distributed according to the circumference of the axis of the tube body.

3. The patch tube for facilitating reverse buckling according to claim 1, wherein an end of the rotating plate facing the center of the tubular body is located in the rectangular groove and the inverted V-shaped groove, an end of the rotating plate facing the outside of the tubular body is curved, and an end portion of the rotating plate facing the outside of the tubular body extends to the outside of the tubular body.

4. The patch tube as claimed in claim 1, wherein the fixing rod abuts against the groove wall near the center of the tube body, and the spring is fixed to the fixing rod, and the end of the spring away from the fixing rod abuts against the groove wall far from the center of the tube body.

5. The patch tube for facilitating back-off of claim 1, wherein the rotating plate is in sliding contact with a vertical wall of the rectangular groove.

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