CN216341958U

CN216341958U - Oil-water expansion sealing centralizer

Info

Publication number: CN216341958U
Application number: CN202122706095.7U
Authority: CN
Inventors: 冯德杰; 魏新芳; 刘中青; 许本福
Original assignee: Shandong Jianyuan Engineering Co ltd
Current assignee: Shandong Jianyuan Engineering Co ltd
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-04-19
Anticipated expiration: 2031-11-05

Abstract

The utility model discloses an oil-water swelling sealing centralizer, which comprises a centralizer body, swelling rubber and a connecting sleeve, wherein the swelling rubber is arranged on the upper side and the lower side of the centralizer body, and the connecting sleeve penetrates through the centralizer body and the swelling rubber; further comprising: the positioning block is fixed at the bottom end of the expanded rubber and is connected with the centralizer body through a connecting groove; the buffer block, it set up in the inside of spread groove, and install first elasticity spring between the bottom of buffer block and the spread groove. This meet sealed centralizer of oil water inflation, reinforcement and compress tightly install third spring between the piece, the top that compresses tightly the piece simultaneously is trapezoidal form, like this when adapter sleeve gos deep into centralizer body inside, can make and compress tightly closely the laminating between piece and the adapter sleeve, and then make adapter sleeve spacing between two parties once more, guarantee adapter sleeve's stable use, also guaranteed the packing effect.

Description

Oil-water expansion sealing centralizer

Technical Field

The utility model relates to the technical field of oil fields, in particular to a sealing centralizer expanding when meeting oil and water.

Background

In the oil field work, often can use sealed centralizer, mainly play to seal off stratum profit and flow and scurry and can play the sleeve pipe and right improvement well cementation quality again, be a neotype packer.

However, the existing sealing centralizer still has some disadvantages in the using process, for example, it is inconvenient to pack and separate between the casing and the stratum, the phenomenon of mutual interference of an oil-water layer can occur, and it is inconvenient to center and limit the casing again, so that the using efficiency of the centralizer is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an oil-water swelling sealing centralizer, which solves the problems that the centralizer in the prior market is inconvenient to seal and separate a casing and a stratum, the phenomenon of mutual interference of an oil-water layer occurs, the casing is inconvenient to be centered and limited again, and the use efficiency of the centralizer is reduced.

In order to achieve the purpose, the utility model provides the following technical scheme: the sealing centralizer capable of expanding when meeting oil and water comprises a centralizer body, expansion rubber and a connecting sleeve, wherein the expansion rubber is arranged on the upper side and the lower side of the centralizer body, and the connecting sleeve penetrates through the centralizer body and the expansion rubber;

further comprising:

the positioning block is fixed at the bottom end of the expanded rubber, the positioning block is connected with the centralizer body through a connecting groove, and the connecting groove is formed in the inner wall of the centralizer body;

the buffer block is arranged inside the connecting groove, and a first elastic spring is arranged between the bottom end of the buffer block and the connecting groove;

the limiting groove is formed in the positioning block, a fastening rod is connected to the inside of the limiting groove, one side, away from the limiting groove, of the fastening rod is connected with the connecting plate, and a second elastic spring is mounted on the outer wall of the fastening rod;

the reinforcing piece is arranged between the centralizer body and the connecting sleeve, and a pressing piece is arranged on the inner side of the reinforcing piece.

Preferably, formula structure as an organic whole between expanded rubber and the locating piece, and the size of locating piece is identical with the size of spread groove to the locating piece can make being connected between locating piece and the expanded rubber more firm in the bottom symmetric distribution of expanded rubber, can make through the connection of locating piece and spread groove like this carry out dismouting operation between expanded rubber and the centralizer body, is convenient for change the operation.

Preferably, the buffer block constitutes extending structure in the inside of spread groove through first elasticity spring, and has the interval between the inner wall of buffer block and spread groove, when the installation of inflation rubber, can play the effect of buffering through the buffer block, moreover under first elasticity spring's the effect that resets, can be through the buffer block with locating piece jack-up, the separation of the locating piece of being convenient for.

Preferably, the connected mode of anchorage bar and connecting plate is the welding, and the anchorage bar passes through spacing groove and locating piece constitution block structure, has guaranteed the fastness of being connected between anchorage bar and the connecting plate, and under the effect of anchorage bar, be convenient for carry on spacingly to the locating piece moreover, make the inseparabler of being connected between expansion rubber and the centralizer body.

Preferably, the reinforcement is fan-shaped, and is connected for the hot melt between the inner wall of reinforcement and centralizer body to the reinforcement is in the inside angular distribution such as of centralizer body, and the reinforcement simultaneously with compress tightly and install third elasticity spring between the piece, be convenient for make the centralizer body inner structure when using more firm, thereby further guaranteed this sealed centralizer's normal use.

Preferably, the top that compresses tightly the piece is trapezoidal form, and compresses tightly the piece and constitute extending structure between through third spring and the reinforcement to compress tightly and connect for the laminating between piece and the adapter sleeve, like this compressing tightly under the effect of piece, can make and compress tightly the piece and carry out spacing once more between two parties to the adapter sleeve, and then ensure the leakproofness in the adapter sleeve use.

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

(1) according to the oil-water swelling sealing centralizer, swelling rubbers are arranged on the upper side and the lower side of a centralizer body, positioning blocks are symmetrically distributed at the bottom of the swelling rubbers, and the sizes of the positioning blocks are matched with those of connecting grooves in the inner wall of the centralizer body, so that the expanding rubbers and the centralizer body can be conveniently disassembled and assembled;

(2) this meet sealed centralizer of oil water inflation, the inboard of centralizer body is provided with compresses tightly piece and reinforcement, and the reinforcement with compress tightly and install third spring between the piece, the top that compresses tightly the piece simultaneously is trapezoidal form, like this when adapter sleeve gos deep into the centralizer body inside, can make and compress tightly and closely laminate between piece and the adapter sleeve, and then make adapter sleeve spacing between two parties once more, guarantee adapter sleeve's stable use, also guaranteed the packing effect.

Drawings

FIG. 1 is a schematic view of an overall main sectional structure of the present invention;

FIG. 2 is an enlarged view of a portion a of FIG. 1 according to the present invention;

FIG. 3 is a schematic view of the bottom view of the connection between the expanded rubber and the positioning block of the present invention;

FIG. 4 is a schematic view of the connection structure of the expansion rubber and the positioning block of the present invention;

FIG. 5 is a schematic view of a cross-sectional structure of the centralizer body according to the present invention.

In the figure: 1. a centralizer body; 2. an expanded rubber; 3. connecting a sleeve; 4. positioning blocks; 5. connecting grooves; 6. a buffer block; 7. a first elastic spring; 8. a limiting groove; 9. a fastening rod; 10. a connecting plate; 11. a second elastic spring; 12. a reinforcement; 13. a compression member; 14. a third elastic spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a sealed centralizer capable of expanding when meeting oil and water comprises a centralizer body 1, expanded rubber 2 and a connecting sleeve 3, wherein the expanded rubber 2 is arranged on the upper side and the lower side of the centralizer body 1, and the connecting sleeve 3 penetrates through the centralizer body 1 and the expanded rubber 2;

further comprising:

a reinforcing member 12 arranged between the centralizer body 1 and the connecting sleeve 3, a pressing member 13 arranged on the inner side of the reinforcing member 12, the reinforcing member 12 being fan-shaped, the reinforcing member 12 being in hot melt connection with the inner wall of the centralizer body 1, the reinforcing member 12 being in equiangular distribution in the centralizer body 1, a third elastic spring 14 arranged between the reinforcing member 12 and the pressing member 13, the top end of the pressing member 13 being in ladder shape, the pressing member 13 forming a telescopic structure with the reinforcing member 12 through the third elastic spring 14, the pressing member 13 being in laminating connection with the connecting sleeve 3, the connecting sleeve 3 being inserted into the expandable rubber 2 and the centralizer body 1 by an operator, the pressing member 13 arranged in the centralizer body 1, the pressing member 13 being connected with the reinforcing member 12 through the third elastic spring 14, and the top end of the pressing member 13 being in ladder shape, therefore, when the connecting sleeve 3 is inserted, the pressing piece 13 can extrude the third elastic spring 14, so that the pressing piece 13 and the outer wall of the connecting sleeve 3 can be tightly attached with each other along with the penetration of the connecting sleeve 3, thereby playing the effect of centering and limiting the connecting sleeve 3, ensuring the firmness of the connecting sleeve 3 in later use,

the positioning block 4 is fixed at the bottom end of the expanded rubber 2, the positioning block 4 is connected with the centralizer body 1 through the connecting groove 5, the connecting groove 5 is formed in the inner wall of the centralizer body 1, the expanded rubber 2 and the positioning block 4 are of an integrated structure, the size of the positioning block 4 is matched with that of the connecting groove 5, the positioning block 4 is symmetrically distributed at the bottom of the expanded rubber 2, and the expanded rubber 2 is arranged at the upper end and the lower end of the centralizer body 1, so that the expanded rubber 2 can be gradually expanded under the action of water or oil until the space between the connecting sleeve 3 and a stratum when no cement exists in an annular space, the purpose of preventing mutual interference of an oil-water layer is achieved, and the well cementation quality can be guaranteed;

the buffer block 6 is arranged inside the connecting groove 5, a first elastic spring 7 is arranged between the bottom end of the buffer block 6 and the connecting groove 5, the buffer block 6 forms a telescopic structure inside the connecting groove 5 through the first elastic spring 7, a gap is arranged between the buffer block 6 and the inner wall of the connecting groove 5, a limiting groove 8 is arranged inside the positioning block 4, a fastening rod 9 is connected inside the limiting groove 8, one side, far away from the limiting groove 8, of the fastening rod 9 is connected with a connecting plate 10, a second elastic spring 11 is arranged on the outer wall of the fastening rod 9, the fastening rod 9 and the connecting plate 10 are connected in a welding mode, the fastening rod 9 forms a clamping structure through the limiting groove 8 and the positioning block 4, when the expanded rubber 2 needs to be disassembled, a worker can pull the connecting plates 10 on the left side and the right side outwards at the same time, so that the connecting plate 10 drives the fastening rod 9 to move together, thereby make anchorage bar 9 separate from spacing groove 8, at this moment under the effect of first elasticity spring 7, buffer block 6 rises and resets, and then promotes locating piece 4 through buffer block 6 and rises, makes locating piece 4 drive expansion rubber 2 and rises together, makes separation between expansion rubber 2 and the centralizer body 1, convenient dismantlement between expansion rubber 2 and the centralizer body 1 like this, it is convenient for the staff to bring, has also improved the availability factor of this centralizer.

The working principle is as follows: when the oil-water swelling sealing centralizer is used, as shown in fig. 1-5, firstly, a worker inserts the connecting sleeve 3 into the swelling rubber 2 and the centralizer body 1, when the connecting sleeve 3 is inserted, the pressing piece 13 can extrude the third elastic spring 14, so that the pressing piece 13 can be attached to the outer wall of the connecting sleeve 3 along with the penetration of the connecting sleeve 3, thereby achieving the effect of centering and limiting the connecting sleeve 3 and ensuring the firmness of the connecting sleeve 3 in later use, because the swelling rubber 2 is arranged at the upper end and the lower end of the centralizer body 1, if no cement exists in an annulus, the swelling rubber 2 can gradually swell under the action of water or oil until the space between the connecting sleeve 3 and a stratum, and the purpose of preventing mutual interference of an oil-water layer is achieved, so that the cementing quality can be ensured, when the expanded rubber 2 needs to be disassembled, a worker can pull the connecting plates 10 on the left side and the right side outwards at the same time, so that the connecting plates 10 drive the fastening rods 9 to move together, at the moment, the buffer block 6 rises and resets under the action of the first elastic spring 7, and then the positioning block 4 is pushed to rise through the buffer block 6, so that the positioning block 4 drives the expanded rubber 2 to rise together, the separation between the expanded rubber 2 and the centralizer body 1 is the working process of the whole device, and the content which is not described in detail in the specification belongs to the prior art known by professionals in the field.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.

Claims

1. The sealing centralizer capable of expanding when meeting oil and water comprises a centralizer body (1), expanded rubber (2) and a connecting sleeve (3), wherein the expanded rubber (2) is arranged on the upper side and the lower side of the centralizer body (1), and the connecting sleeve (3) penetrates through the centralizer body (1) and the expanded rubber (2);

it is characterized by also comprising:

the positioning block (4) is fixed at the bottom end of the expanded rubber (2), the positioning block (4) is connected with the centralizer body (1) through a connecting groove (5), and the connecting groove (5) is formed in the inner wall of the centralizer body (1);

the buffer block (6) is arranged inside the connecting groove (5), and a first elastic spring (7) is arranged between the bottom end of the buffer block (6) and the connecting groove (5);

the limiting groove (8) is formed in the positioning block (4), a fastening rod (9) is connected to the inside of the limiting groove (8), one side, far away from the limiting groove (8), of the fastening rod (9) is connected with a connecting plate (10), and a second elastic spring (11) is mounted on the outer wall of the fastening rod (9);

a reinforcement (12) arranged between the centralizer body (1) and the connection sleeve (3), the inner side of the reinforcement (12) being provided with a compression piece (13).

2. The oil-water swellable seal centralizer of claim 1, wherein: the expansion rubber (2) and the positioning block (4) are of an integrated structure, the size of the positioning block (4) is matched with that of the connecting groove (5), and the positioning blocks (4) are symmetrically distributed at the bottom of the expansion rubber (2).

3. The oil-water swellable seal centralizer of claim 1, wherein: buffer block (6) constitute extending structure in the inside of spread groove (5) through first elasticity spring (7), and have the interval between the inner wall of buffer block (6) and spread groove (5).

4. The oil-water swellable seal centralizer of claim 1, wherein: the connecting mode of fastening rod (9) and connecting plate (10) is the welding, and fastening rod (9) constitute the block structure through spacing groove (8) and locating piece (4).

5. The oil-water swellable seal centralizer of claim 1, wherein: the reinforcing member (12) is fan-shaped, the reinforcing member (12) is in hot melt connection with the inner wall of the centralizer body (1), the reinforcing member (12) is distributed in the centralizer body (1) at equal angles, and meanwhile a third elastic spring (14) is installed between the reinforcing member (12) and the pressing member (13).

6. The oil-water swellable seal centralizer of claim 1, wherein: the top end of the pressing piece (13) is trapezoidal, the pressing piece (13) forms a telescopic structure through the third elastic spring (14) and the reinforcing piece (12), and the pressing piece (13) is connected with the connecting sleeve (3) in a fitting mode.