CN220267666U - Soluble bridge plug - Google Patents

Abstract

The utility model discloses a dissolvable bridge plug, which comprises a bridge plug, wherein a blocking mechanism is arranged in the bridge plug, the blocking mechanism comprises a blocking ball, a plurality of limiting rods, a mounting assembly and an embedding groove, the blocking ball is arranged in an inner cavity of the embedding groove, the limiting rods are arranged on the outer wall of the blocking ball at equal intervals, and the mounting assembly is arranged on the limiting rods and the outer wall of the blocking ball. According to the utility model, by means of the arrangement mode of the matched anti-blocking mechanism and the bridge plug, the bridge plug can be sealed by the anti-blocking mechanism while being subjected to seat sealing, so that the construction steps of engineering are effectively reduced, the engineering construction efficiency is improved, the position of the blocking ball is relatively fixed by the arrangement of the limiting rod, the use stability of the blocking ball is improved, the blocking effect of the blocking ball is ensured, meanwhile, the blocking ball can be reused after being dissolved, the use practicability of the limiting rod is effectively improved, the engineering construction cost is also reduced, and the engineering use efficiency is improved.

Description

Soluble bridge plug

Technical Field

The utility model relates to the field of bridge plugs, in particular to a dissolvable bridge plug.

Background

With the progress of oil and gas development technology, the development of oil and gas for horizontal layers is more mature, the progress of horizontal well technology has promoted oil and gas exploitation technology such as a staged fracturing technology, and in a horizontal well, a bridge plug is used as an indispensable plugging device.

The existing soluble bridge plug is matched with the soluble blocking ball for use, the subsequent throwing is needed for the soluble blocking ball, the construction step of construction is increased, the use efficiency of the bridge plug is reduced, in order to solve the problem, the existing document application number 202021615719.3 is named as the soluble bridge plug, in the patent, the soluble blocking ball is sealed with liquid flow along with bridge plug seat sealing, the construction step is effectively reduced, the use efficiency of the bridge plug is improved, but in the process, the stability of the blocking ball in the bridge plug seat sealing is not high, the blocking ball is easy to deviate from the inner wall of the bridge plug in the seat sealing process, so that friction extrusion phenomenon is easy to generate with other inner walls of the bridge plug before the central channel of the bridge plug is sealed, the use effect of the blocking ball is easy to influence, and the blocking effect is reduced.

Disclosure of Invention

The present utility model is directed to a dissolvable bridge plug that solves the above-mentioned problems associated with the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a dissolvable bridge plug, comprising a bridge plug, wherein a plugging mechanism is arranged inside the bridge plug;

the plugging mechanism comprises a plugging ball, a plurality of limiting rods, a mounting assembly and an embedding groove, wherein the plugging ball is arranged in an inner cavity of the embedding groove, the limiting rods are arranged on the outer wall of the plugging ball at equal intervals, and the mounting assembly is arranged on the outer walls of the limiting rods and the plugging ball.

Preferably, the bridge plug comprises a bridge plug main body, an upper connector, a lower connector, a central rubber cylinder and a central through hole, wherein the upper connector and the lower connector are respectively arranged at two ends of the bridge plug main body, the central rubber cylinder is arranged at the middle part of the bridge plug main body, and the central through hole is formed in an inner cavity of the bridge plug main body.

Preferably, the installation component includes a plurality of mounting grooves, with axle ring and a plurality of connecting rod, and is a plurality of the connecting rod all sets up in the outer wall with the axle ring, a plurality of the mounting groove all is seted up on the inner wall of central through-hole, and the coaxial ring inlays the top of locating central through-hole inner chamber.

Preferably, the two ends of the central rubber cylinder are respectively provided with an upper cone and a lower cone, and the end parts of the upper cone and the lower cone, which deviate from each other, are respectively provided with an upper slip and a lower slip.

Preferably, the limiting rod is fixedly arranged at the bottom end of the same shaft collar, and the inner cavity of the embedded groove is communicated with the inner cavity of the central through hole.

Preferably, the opposite ends of the limiting rod are arc-shaped, and the limiting rod is any one of elastic plastic or elastic metal sheet.

The utility model has the technical effects and advantages that:

according to the utility model, by means of the arrangement mode of the matched anti-blocking mechanism and the bridge plug, the bridge plug can be sealed by the anti-blocking mechanism while being subjected to seat sealing, so that the construction steps of engineering are effectively reduced, the engineering construction efficiency is improved, the position of the blocking ball is relatively fixed by the arrangement of the limiting rod, the use stability of the blocking ball is improved, the blocking effect of the blocking ball is ensured, meanwhile, the blocking ball can be reused after being dissolved, the use practicability of the limiting rod is effectively improved, the engineering construction cost is also reduced, and the engineering use efficiency is improved.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

FIG. 2 is a schematic cross-sectional view of the present utility model.

FIG. 3 is a schematic view of the present utility model in a cross-sectional view.

In the figure: 1. a bridge plug; 101. a bridge plug body; 102. an upper joint; 103. a lower joint; 104. a central rubber cylinder; 105. a central through hole; 2. a plugging mechanism; 201. a blocking ball; 202. a limit rod; 203. a mounting groove; 204. a concentric ring; 205. a connecting rod; 206. and (5) embedding grooves.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides a dissolvable bridge plug as shown in figures 1-3, comprising a bridge plug 1, wherein a plugging mechanism 2 is arranged inside the bridge plug 1;

preferably, the plugging mechanism 2 comprises a plugging ball 201, a plurality of limiting rods 202, a mounting assembly and an embedding groove 206, wherein the plugging ball 201 is arranged in the inner cavity of the embedding groove 206, the limiting rods 202 are arranged on the outer wall of the plugging ball 201 at equal intervals, the mounting assembly is arranged on the outer walls of the limiting rods 202 and the plugging ball 201, the opposite ends of the limiting rods 202 are arc-shaped, the limiting rods 202 are made of any one of elastic plastic or elastic metal sheets, the outer walls of the bottom ends of the limiting rods 202 are arc-shaped, the inner cavity of the embedding groove 206 is communicated with the inner cavity of the central through hole 105, the mounting assembly comprises a plurality of mounting grooves 203, a coaxial ring 204 and a plurality of connecting rods 205, the connecting rods 205 are arranged on the outer wall of the coaxial ring 204, the mounting grooves 203 are all arranged on the inner wall of the central through hole 105, the coaxial ring 204 is embedded at the top of the inner cavity of the central through hole 105, the plugging ball 201 can be mounted in the inner cavity of the embedding groove 206 through the arrangement of the limiting rods 202, the coaxial ring 204 is connected with the upper joint 102 through the connecting rod 205, the coaxial ring 204 is internally provided with a through hole, the inner diameter of the through hole is smaller than the inner diameter of the embedded groove 206, the plugging ball 201 is soluble, the soluble plugging ball 201 is embedded in the inner cavity of the embedded groove 206 through the diameter of the plugging ball, the installation groove 203 is convenient for connecting the coaxial ring 204 with the upper joint 102, the upper joint 102 can synchronously drive the coaxial ring 204 to move when in seat sealing, the starving space between the coaxial ring 204 and the embedded groove 206 can be utilized in the process of descending the bridge plug 1, so that the plugging ball 201 can move in the inner cavity of the embedded groove 206 in the process of synchronously descending the plugging ball 201, the flow passing through can not be influenced, when in deblocking, the plugging ball 201 can use the upward reverse impact heat flow in the ground, and further the bridge plug main body 101 and the plugging ball 201 can be melted, after the plugging balls 201 are dissolved, the limiting rod 202 can be reused after being disassembled, so that the practicability of the limiting rod 202 can be effectively improved, the use cost of the plugging mechanism 2 can be conveniently reduced, and the engineering effect can be conveniently improved;

preferably, the bridge plug 1 comprises a bridge plug main body 101, an upper joint 102, a lower joint 103, a central rubber cylinder 104 and a central through hole 105, wherein the upper joint 102 and the lower joint 103 are respectively arranged at two ends of the bridge plug main body 101, the central rubber cylinder 104 is arranged in the middle of the bridge plug main body 101, the central through hole 105 is arranged in an inner cavity of the bridge plug main body 101, two ends of the central rubber cylinder 104 are respectively provided with an upper cone and a lower cone, the ends of the upper cone and the lower cone, which are far away, are respectively provided with an upper slip and a lower slip, the lower joint 103 is arranged at the bottom end of the bridge plug main body 101 in a threaded connection mode, during seat sealing, the bridge plug main body 101 can be lowered to a designated position by using a seat sealing tool, in the process, the central through hole 105 can be used for passing of liquid flow, so that the speed of the lower tool can be increased, and when the bridge plug main body 101 reaches the designated position, the seat sealing tool is used for sealing, the sealing mechanism 2 is closed, thus sealing of an oil pipe can be realized, a plurality of convex teeth are respectively arranged on the upper slips and the lower slips in an annular array, and in a plurality of seats can be synchronously moved with the seat 204 of the upper joint 102, and the sealing ball 201 can be sealed, and the sealing ball 201 can be reversely sealed.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (6)

1. A dissolvable bridge plug, comprising a bridge plug (1), characterized in that a plugging mechanism (2) is arranged inside the bridge plug (1);

the plugging mechanism (2) comprises a plugging ball (201), a plurality of limiting rods (202), a mounting assembly and an embedding groove (206), wherein the plugging ball (201) is arranged in an inner cavity of the embedding groove (206), the limiting rods (202) are arranged on the outer wall of the plugging ball (201) at equal intervals, and the mounting assembly is arranged on the outer walls of the limiting rods (202) and the plugging ball (201).

2. The dissolvable bridge plug of claim 1, wherein the bridge plug (1) comprises a bridge plug body (101), an upper joint (102), a lower joint (103), a central rubber cylinder (104) and a central through hole (105), the upper joint (102) and the lower joint (103) are respectively arranged at two ends of the bridge plug body (101), the central rubber cylinder (104) is arranged in the middle of the bridge plug body (101), and the central through hole (105) is arranged in an inner cavity of the bridge plug body (101).

3. The dissolvable bridge plug of claim 1, wherein the mounting assembly comprises a plurality of mounting grooves (203), a coaxial ring (204) and a plurality of connecting rods (205), wherein a plurality of connecting rods (205) are arranged on the outer wall of the coaxial ring (204), a plurality of mounting grooves (203) are arranged on the inner wall of the central through hole (105), and the coaxial ring (204) is embedded on the top of the inner cavity of the central through hole (105).

4. A dissolvable bridge plug according to claim 2, wherein the two ends of the central rubber cylinder (104) are provided with an upper cone and a lower cone respectively, the ends of the upper cone and the lower cone facing away from each other are provided with an upper slip and a lower slip respectively.

5. The dissolvable bridge plug of claim 1, wherein the stop lever (202) is fixedly disposed with the bottom end of the coaxial ring (204), and the cavity of the insert pocket (206) is in communication with the cavity of the central throughbore (105).

6. The dissolvable bridge plug of claim 1, wherein the opposite ends of the stop lever (202) are arcuate, the stop lever (202) being any one of a resilient plastic or a resilient metal sheet.