CN220869370U - Sealing rubber cylinder for packer - Google Patents

Abstract

The utility model provides a sealing rubber cylinder for a packer, which comprises a cylinder body, cylinder seats and protection pieces, wherein the cylinder seats are arranged on two sides of the cylinder body, the protection pieces are sleeved at the end part of the cylinder body in a bowl shape, each protection piece comprises a connecting part, a bending part and a protection part, the connecting part is attached to the side wall of the cylinder body, the protection part consists of a plurality of arc-shaped protection pieces, the protection pieces are sequentially attached to the outer wall surface of the cylinder body, the bending parts correspond to the protection pieces in number, one end of each bending part is fixedly connected with each protection piece, the other end of each bending part is fixedly connected with the connecting part, and the bending parts are made of memory alloy. According to the sealing rubber cylinder for the packer, the cylinder body is extruded by the cylinder seat and rotates, the protective sheet is pulled to one side by the traction rope, so that the protective sheet is separated from the outer wall surface of the cylinder body, the cylinder body is convenient to expand radially, the space between the sleeve and the packer is sealed, after the packer is used, the bent part made of the memory alloy can be heated, the original shape of the bent part is recovered, and the protective piece can be reused.

Description

Sealing rubber cylinder for packer

Technical Field

The utility model relates to the technical field of packers, in particular to a sealing rubber cylinder for a packer.

Background

The packer is a key tool for oil field underground oil extraction, and is widely used for various operation purposes such as oil field separate injection, layered reconstruction, layered oil extraction, mechanical pipeline water shutoff and the like. The rubber cylinder is used as the main component of the packer, and its quality directly affects the normal use effect, service life, etc. of the packer, and plays a decisive role in the packer. In the seat sealing process of the rubber cylinder, the shoulder part of the rubber cylinder is easy to be prominently increased and even broken, so that the sealing of the rubber cylinder is invalid, and the pressure resistance difference of the packer is low and the service life is short. In order to ensure the pressure resistance of the rubber cylinder, the end part of the oil gas exploitation packer rubber cylinder used on the site is protected by a bowl-shaped protecting bowl, and after the rubber cylinder is compressed, the wrist protector is in an umbrella-shaped opening, so that the shoulder of the rubber cylinder is effectively prevented, and the sealing performance of the rubber cylinder is improved. However, in the prior art, after the packer is used once, the bracer which is spread can not be restored, and the rubber cylinder can not be protected by recycling, so that the production cost is increased.

Disclosure of utility model

The technical problems to be solved by the utility model are as follows: the utility model provides a sealing rubber cylinder for a packer, which aims to overcome the defects that after the packer is used once in the prior art, the braced can not be restored, the rubber cylinder can not be recycled for protection, and the production cost is increased.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a packing element for packer, includes barrel, tube seat and protection piece, the barrel both sides are equipped with the tube seat, on the center tube was all located to barrel and tube seat cover, the protection piece is bowl form cover and locates the barrel tip, the protection piece includes connecting portion, kink and protection part, the connecting portion paste and locate on the barrel lateral wall, the protection part comprises a plurality of curved guard sheets, the guard sheet pastes in proper order and locates on the barrel outer wall, kink corresponds with guard sheet quantity, kink one end and guard sheet fixed connection, the other end and connecting portion fixed connection, the kink adopts memory alloy to make.

The connecting part of the protection piece is used for protecting the shoulder part of the rubber cylinder body, the protection part is used for protecting the outer wall surface of the rubber cylinder body, and the bent part is made of memory alloy and used for connecting the connecting part and the protection part, so that shoulder and flow of the rubber cylinder are effectively prevented; when the cylinder seat compresses the cylinder body, the cylinder body expands radially, the protection piece is propped by the cylinder body, and the bending part deforms; after the packer is used, the packer is taken out from the well, the bent part can be heated to restore the original shape, and the protective sheet is covered on the outer wall surface of the cylinder body again, so that the protective piece can be reused.

Further, in order to prevent that the barrel from being difficult for opening the protection piece when radially expanding, be equipped with the arc wall that leans gradually to the barrel direction on the barrel seat internal face, be equipped with on the center tube with arc wall complex arch, the barrel seat is close to the one end of barrel evenly be equipped with a plurality of haulage ropes that are used for pulling the protection piece and keep away from barrel external wall along circumference, haulage rope position and quantity and protection piece one-to-one.

When the cylinder base extrudes the cylinder body, the arc-shaped groove is matched with the bulge, so that the cylinder base rotates when moving, and as the traction rope is connected between the cylinder base and the protection sheets, each protection sheet is assisted by the traction rope to be far away from the outer wall surface of the cylinder body, and the bending part is bent and deformed, so that the protection sheets are folded on the circumferential direction of the connecting part.

Further, in order to prevent the cylinder seat from rotating and extruding the rubber cylinder body, the rubber cylinder body is twisted due to large friction force between the cylinder seat and the connecting part, so that normal expansion of the cylinder body along the radial direction is influenced, and a plurality of balls are arranged on one side, close to the cylinder seat, of the connecting part.

Further, the projection of the arc-shaped groove in the vertical direction forms a half arc.

Further, in order to prevent interference between the traction rope and the protective sheet in the traction process, the outer diameter of the cylinder seat is larger than the diameter of the cylinder where the outer wall surface of the protective sheet is located.

Further, in order to prevent abrasion between the arc-shaped groove and the bulge when the cylinder seat extrudes the cylinder body, the bulge is sleeved with a rolling ring.

The beneficial effects are that: according to the sealing rubber cylinder for the packer, the cylinder body is extruded by the cylinder seat to rotate, the protective sheet is pulled to one side through the traction rope in the rotating process of the cylinder seat, so that the protective sheet is separated from the outer wall surface of the cylinder body, the cylinder body is convenient to expand radially, the space between the sleeve and the packer is sealed, after the packer is used, the bent part made of the memory alloy can be heated to restore the original shape, the protective sheet is covered on the outer wall surface of the cylinder body again, and the protective piece can be reused.

Drawings

The utility model is further described below with reference to the drawings and examples.

FIG. 1 is a schematic view of a preferred embodiment of the present utility model;

FIG. 2 is an enlarged schematic view of A in FIG. 1;

FIG. 3 is a schematic cross-sectional view of a preferred embodiment of the present utility model;

FIG. 4 is a schematic view showing a state that the protection member is opened by the traction rope;

fig. 5 is a schematic structural view of the cartridge.

In the figure: 1. barrel, 2, barrel seat, 21, arc groove, 3, protection piece, 31, connecting portion, 32, kink, 33, protection piece, 4, center tube, 41, arch, 5, haulage rope, 6, ball.

Detailed Description

The present utility model will now be described in detail with reference to the accompanying drawings. The figure is a simplified schematic diagram illustrating the basic structure of the utility model only by way of illustration, and therefore it shows only the constitution related to the utility model.

As shown in fig. 1-5, the sealing rubber cylinder for the packer comprises a cylinder body 1, a cylinder seat 2 and a protecting piece 3, wherein the cylinder seat 2 is arranged on two sides of the cylinder body 1, the cylinder body 1 and the cylinder seat 2 are sleeved on a central tube 4, the protecting piece 3 is sleeved on the end part of the cylinder body 1 in a bowl shape, the protecting piece 3 comprises a connecting part 31, a bending part 32 and a protecting part, the connecting part 31 is attached to the side wall of the cylinder body 1, the protecting part consists of a plurality of arc-shaped protecting pieces 33, the protecting pieces 33 are sequentially attached to the outer wall surface of the cylinder body 1, the bending part 32 corresponds to the protecting pieces 33 in number, one end of the bending part 32 is fixedly connected with the protecting pieces 33, the other end of the bending part 32 is fixedly connected with the connecting part 31, and the bending part 32 is made of memory alloy.

The inner wall surface of the cylinder seat 2 is provided with an arc-shaped groove 21 which is gradually inclined towards the direction of the cylinder body 1, the central tube 4 is provided with a protrusion 41 matched with the arc-shaped groove 21, one end of the cylinder seat 2, which is close to the cylinder body 1, is uniformly provided with a plurality of traction ropes 5 which are used for traction the outer wall surface of the cylinder body 1, which are used for traction the protection sheets 33, and the positions and the number of the traction ropes 5 are in one-to-one correspondence with the protection sheets 33.

The connecting part 31 is provided with a plurality of balls 6 at one side close to the cylinder seat 2.

The projection of the arc-shaped groove 21 in the vertical direction forms a half arc.

The outer diameter of the cylinder seat 2 is larger than the diameter of the cylinder where the outer wall surface of the protective sheet 33 is positioned.

The boss 41 is sleeved with a rolling ring.

The using process comprises the following steps:

In the packer setting process, cylinder bases 2 on two sides of the cylinder body 1 approach to the direction of the cylinder body 1 and squeeze the cylinder body 1, in the moving process of the cylinder base 2, the cylinder base 2 is interacted with a bulge 41 on the central tube 4 through an arc-shaped groove 21 on the inner wall surface, so that the cylinder base 2 rotates when squeezing the cylinder body 1, and in the rotating process of the cylinder base 2, the protective sheet 33 is dragged to one side through the traction rope 5, so that the protective sheet 33 leaves the outer wall surface of the cylinder body 1, the cylinder body 1 is conveniently expanded along the radial direction, and the space between the sleeve and the packer is sealed.

After the packer is used, the packer is taken out from the well, the bent part 32 can be heated to restore the original shape, the protective sheet 33 is covered on the outer wall surface of the cylinder body 1 again, and the protective piece 3 can be reused.

Directions and references (e.g., up, down, left, right, etc.) in this utility model may be used only to aid in the description of features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.

While the foregoing is directed to the preferred embodiment of the present utility model, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.

Claims (6)

1. A packing element for packer, its characterized in that: including barrel (1), barrel seat (2) and protection piece (3), barrel (1) both sides are equipped with barrel seat (2), barrel (1) and barrel seat (2) are all overlapped and are located on center tube (4), protection piece (3) are bowl form cover and locate barrel (1) tip, protection piece (3) include connecting portion (31), kink (32) and protection part, connecting portion (31) paste and locate on barrel (1) lateral wall, the protection part comprises a plurality of curved guard plates (33), guard plates (33) paste in proper order and locate on barrel (1) outer wall, kink (32) correspond with guard plate (33) quantity, kink (32) one end and guard plate (33) fixed connection, the other end and connecting portion (31) fixed connection, kink (32) adopt memory alloy to make.

2. The packing element for a packer of claim 1, wherein: be equipped with arc groove (21) to barrel (1) direction gradual slope on barrel seat (2) internal face, be equipped with on center tube (4) with arc groove (21) complex arch (41), barrel seat (2) are close to the one end of barrel (1) evenly are equipped with a plurality of haulage ropes (5) that are used for pulling guard piece (33) to keep away from barrel (1) external face along circumference, haulage rope (5) position and quantity and guard piece (33) one-to-one.

3. The packing element for a packer of claim 2, wherein: the connecting part (31) is provided with a plurality of balls (6) at one side close to the cylinder seat (2).

4. The packing element for a packer of claim 2, wherein: the projection of the arc-shaped groove (21) in the vertical direction forms a half arc.

5. The packing element for a packer of claim 2, wherein: the outer diameter of the cylinder seat (2) is larger than the diameter of the cylinder where the outer wall surface of the protective sheet (33) is located.

6. The packing element for a packer of claim 2, wherein: the boss (41) is sleeved with a rolling ring.