CN210598917U - Anti-back-off adapter of bridge plug - Google Patents

Abstract

The utility model belongs to the oil well equipment field, specificly relate to a back-off preventing adapter of bridging plug. The first end of the extending rod of the utility model is connected with the first end of the sleeve by screw thread and is positioned in the sleeve, the second end of the extending rod is positioned outside the sleeve, and the outer wall of the extending rod close to the second end is provided with a first external screw thread; the second end of the extension rod is in threaded connection with the second end of the sleeve and is positioned in the sleeve; the fixed cover is equipped with on the telescopic outer wall keep off husky ring, it is equipped with a plurality of through-hole to keep off husky ring, one of them be equipped with rather than can dismantle the connection on the through-hole the pin. The pins extend into the through grooves on the upper joint of the bridge plug through the corresponding through holes. The pin just can play the effect of restriction bridging plug's rotation in logical inslot to avoided bridging plug to take place the back-off and take place the separation with pumping tool. The technical problem of the bridge plug in the pump sending in-process take place the back-off easily among the prior art is solved.

Description

Anti-back-off adapter of bridge plug

Technical Field

The utility model belongs to the oil well equipment field, specificly relate to a back-off preventing adapter of bridging plug.

Background

In the development or working process of an oil well, the bridge plug is used for sealing an oil-gas well layer and has the characteristics of few construction procedures, short period and accurate blocking position. When the bridge plug is put into a well, the bridge plug is connected with a setting tool through a breaking rod and a breaking ring, and after the bridge plug is conveyed to a preset position of a sleeve by pumping, the bridge plug is set and released through ground ignition and detonation or compaction in an oil pipe.

As shown in fig. 3, the existing bridge plug is composed of a mandrel (6), a slip (7), an upper joint (8), a sealing rubber cylinder (9), a lower joint (10) and other components, and a through groove (801) penetrating through the upper joint (8) is arranged at the end part of the upper joint (8). This results in the top view shown in figure 4. However, the existing bridge plug is easy to be reversed in the pumping process, so that the bridge plug is separated from pumping tools such as a push cylinder and the like, the bridge plug cannot be set and is very difficult to recover and treat, and the development and utilization of an oil well are influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above-mentioned bridge plug and take place back-off technical problem and provide a bridge plug's adapter of preventing back-off.

The utility model provides an above-mentioned technical problem's technical scheme as follows: the utility model provides an anti-back-off adapter of bridge plug, includes that the level sets up stretches into pole, the extension bar of level setting, cylindric and hollow sleeve, fender sand ring and pin, wherein:

the first end of the extending rod is in threaded connection with the first end of the sleeve and is positioned in the sleeve, the second end of the extending rod is positioned outside the sleeve, and a first external thread is arranged on the outer wall of the extending rod close to the second end of the extending rod;

the second end of the extension rod is in threaded connection with the second end of the sleeve and is positioned in the sleeve, and the first end of the extension rod is positioned outside the sleeve;

the fixed cover is equipped with on the telescopic outer wall keep off husky ring, it is equipped with a plurality of through-hole to keep off husky ring, one of them be equipped with rather than can dismantle the connection on the through-hole the pin.

The utility model has the advantages that: the extension rod is provided with a first external thread, so the extension rod penetrates through the mandrel of the bridge plug and then is fixedly connected with the lower connector through threads, and then the inlet end of the mandrel of the bridge plug is abutted to the sleeve. The extension rod is connected with a pumping tool of the bridge plug, and the upper joint of the bridge plug is positioned below the sand blocking ring, and the sand blocking ring is provided with a plurality of through holes. The pins extend into the through grooves on the upper joint through the corresponding through holes. The pin just can play the effect of restriction bridge plug's rotation in logical groove this time to avoided the bridge plug to take place the back-off and take place the separation with pumping tool. The technical problem of among the prior art the bridge plug take place the back-off easily at the in-process of pumping thereby take place to separate with pumping tools such as a push cylinder, cause unable setting and very difficult recovery and processing, influence the development and the utilization of oil well is solved. And because the inlet end butt of the telescopic dabber with the bridge plug, keep off the effect that sand ring can play the fender sand at the in-process of bridge plug pump sending, fine entering sand in having avoided the dabber of bridge plug.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Further, be equipped with the round platform on the telescopic outer wall, the radial cross-section of round platform is the radius of cross-section circle and reduces in proper order, wherein:

the radial cross-section circle with the smallest radius in the circular truncated cones is located at the end part of the first end of the sleeve, and the radial cross-section circle with the largest radius in the circular truncated cones is the same as the radius of the sleeve.

The beneficial effect who adopts above-mentioned further scheme is that, because the centrum form of round platform sets up, so when the dabber entry end of bridging plug and sleeve contact, the dabber entry end to the bridging plug that the round platform can be better seals the laminating, has strengthened the utility model discloses the leakproofness of bridging plug adapter to the dabber of bridging plug to prevent that the sand from entering into in the dabber better.

Furthermore, a plurality of the through holes are arranged at equal intervals.

The beneficial effect who adopts above-mentioned further scheme is that, the through-hole that equidistant setting can let the better selection of the pin adapt to the through-hole and insert the logical inslot on the top connection of bridging plug, is favorable to preventing the bridging plug back-off.

Further, the through holes are arranged along the circumference of the sand blocking ring.

The beneficial effect who adopts above-mentioned further scheme is that, thereby the through-hole that sets up along the circumference of keeping off the husky ring can let the better selection of pin adapt to the through-hole and insert the logical inslot on the top connection of bridge plug, is favorable to preventing the bridge plug back-off.

Further, the through hole is in threaded connection with the pin.

The beneficial effect who adopts above-mentioned further scheme is that through-hole and pin threaded connection make the realization that the pin can be more convenient dismantle to enter into the logical inslot on the top connection of bridging plug.

Furthermore, a second external thread is arranged on the outer wall of the extension rod.

The beneficial effect of adopting above-mentioned further scheme is that, the second external screw thread on the extension bar can be connected with pumping tool well, is favorable to the control to the pump sending of bridge plug.

Furthermore, the inner wall of the sand blocking ring is fixedly connected with the outer wall of the sleeve.

Adopt above-mentioned further scheme's beneficial effect to be, strengthened keeping off sand ring and telescopic wholeness and stability.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a top view of the present invention;

FIG. 3 is a schematic structural diagram of a prior art bridge plug;

fig. 4 is a top view of fig. 3 in the prior art.

In the drawings, the components represented by the respective reference numerals are listed below:

1. the extension rod comprises a rod body 101, a first external thread, 2, an extension rod, 201, a second external thread, 3, a sleeve, 301, a circular truncated cone, 4, a sand blocking ring, 401, a through hole, 5, a pin, 6, a mandrel, 7, a slip, 8, an upper joint, 801, a through groove, 9, a sealing rubber cylinder, 10 and a lower joint.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Examples 1,

As shown in fig. 1 to 3, an anti-back-off adapter for a bridge plug comprises a horizontally arranged extension rod 1, a horizontally arranged extension rod 2, a cylindrical and hollow sleeve 3, a sand blocking ring 4 and a pin 5, wherein a first end of the extension rod 1 is in threaded connection with a first end of the sleeve 3 and is located in the sleeve 3, a second end of the extension rod 1 is located outside the sleeve 3, and a first external thread 101 is arranged on an outer wall of the extension rod 1 close to the second end thereof; the second end of the extension rod 2 is in threaded connection with the second end of the sleeve 3 and is positioned in the sleeve 3, and the first end of the extension rod 2 is positioned outside the sleeve 3; the fixed cover of cover is equipped with on the outer wall of sleeve 3 keep off husky ring 4, it is equipped with a plurality of through-hole 401 to keep off husky ring 4, one of them through-hole 401 be equipped with rather than can dismantle the connection pin 5.

Optionally, be equipped with round platform 301 on the outer wall of sleeve 3, the radial cross-section of round platform 301 is section circle and the radius of section circle reduces in proper order, wherein: the radial cross-sectional circle with the smallest radius in the circular truncated cones 301 is located at the first end of the sleeve 3, and the radial cross-sectional circle with the largest radius in the circular truncated cones 301 is the same as the radius of the sleeve 3.

Optionally, a plurality of the through holes 401 are arranged at equal intervals.

Optionally, the through holes 401 are arranged along the circumference of the sand blocking ring 4.

Optionally, the through hole 401 is in threaded connection with the pin 5.

Optionally, the outer wall of the extension bar 2 is provided with a second external thread 201.

Optionally, the inner wall of the sand blocking ring 4 is fixedly connected with the outer wall of the sleeve 3.

The utility model discloses a bridge plug prevent backing down adapter's concrete operation in-process: the second end of the extension rod 1 extends into the mandrel 6 of the bridge plug to reach the lower connector 10 and then is in threaded connection with the lower connector 10. At the moment, the inlet end of the mandrel 6 of the bridge plug is sealed by the round platform 301 on the sleeve 3, and the sand blocking effect is well achieved. The pin 5 then extends through a suitable one of the through holes 401 of the sand guard ring 4 into the through groove 801 of the upper joint 8 of the bridge plug, so that when the bridge plug rotates, the pin 5 in the through groove 801 blocks the rotation of the bridge plug. The technical problem of among the prior art the bridge plug take place the back-off easily at the in-process of pumping thereby take place to separate with pumping tools such as a push cylinder, cause unable setting and very difficult recovery and processing, influence the development and the utilization of oil well is solved.

In the present application, the term "plurality" means two or more unless expressly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed in a specific direction, and be operated, and therefore, should not be construed as limiting the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (7)

1. The utility model provides an anti-back-off adapter of bridge plug, its characterized in that, including pole (1) of stretching into that the level set up, extension bar (2) that the level set up, cylindric and hollow sleeve (3), fender sand ring (4) and pin (5), wherein:

the first end of the extending rod (1) is in threaded connection with the first end of the sleeve (3) and is positioned in the sleeve (3), the second end of the extending rod (1) is positioned outside the sleeve (3), and a first external thread (101) is arranged on the outer wall of the extending rod (1) close to the second end of the extending rod;

the second end of the extension rod (2) is in threaded connection with the second end of the sleeve (3) and is positioned in the sleeve (3), and the first end of the extension rod (2) is positioned outside the sleeve (3);

fixed cover is equipped with on the outer wall of sleeve (3) keep off husky ring (4), it is equipped with a plurality of through-hole (401) on husky ring (4) to keep off, one of them be equipped with on through-hole (401) rather than can dismantle the connection pin (5).

2. The anti-back-buckling adapter of bridge plug according to claim 1, characterized in that the outer wall of the sleeve (3) is provided with a circular truncated cone (301), the radial cross-sections of the circular truncated cone (301) are all cross-sectional circles and the radii of the cross-sectional circles decrease in sequence, wherein:

the radial cross-section circle with the smallest radius in the circular truncated cone (301) is located on the first end portion of the sleeve (3), and the radial cross-section circle with the largest radius in the circular truncated cone (301) is identical to the radius of the sleeve (3).

3. The adapter of claim 1, wherein a number of said through holes (401) are equally spaced.

4. The adapter according to claim 1, characterized in that said through holes (401) are arranged along the circumference of said sand-stop ring (4).

5. The bridge plug anti-backup adapter according to claim 1, characterized in that the through hole (401) is threadedly connected with the pin (5).

6. An adapter as claimed in any one of claims 1 to 5, characterized in that the outer wall of the protruding rod (2) is provided with a second external thread (201).

7. The adapter of claim 1 to 5, characterized in that the inner wall of the sand-retaining ring (4) is fixedly connected to the outer wall of the sleeve (3).

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