CN204212713U - For sleeve pipe antitorque ring and comprise its thimble assembly - Google Patents

Abstract

The utility model provides a kind of antitorque ring for sleeve pipe and comprises its thimble assembly.Antitorque ring comprises the body of ring-type, the internal diameter of body is equal with the internal diameter of body, the external diameter of body is configured to the inner chamber that can be arranged in box cupling, the both ends of the surface of body can respectively with the end contact of body being in its two ends, and at least one end face of body, be provided with axially outside lug boss circumferentially.Therefore, this antitorque ring can stop the pin thread of the body at two ends to continue to rotate, and improves the anti-twisting property of connection of thread and the sealing of junction.

Description

For sleeve pipe antitorque ring and comprise its thimble assembly

Technical field

The utility model belongs to Cementing engineering field, particularly a kind of antitorque ring for sleeve pipe and comprise its thimble assembly.

Background technology

Petroleum casing pipe is the lifeline maintaining oil well operation.Because geological conditions is different, down-hole stress is complicated, and tensile, compressive, bending, torsional stress comprehensive function are in body, and this proposes higher requirement to the quality of sleeve pipe itself.Once sleeve pipe itself damages for a certain reason, the underproduction of whole mouth well may be caused, even scrap.And petroleum casing pipe string is threadingly connected by a lot of root sleeve pipe.A sleeve pipe is made up of body and box cupling, and body is the long seamless pipe such as wall thickness such as grade of two ends pin thread, and the two ends of box cupling are box.When factory connects, by root, box cupling and body are connected, form the sleeve pipe of one end box, one end pin thread.At present, the normal API that adopts is threaded body and box cupling.And API screw thread be used for rotary tail, casing cementing time, the anti-twisting property of its connection of thread is low, affects the safety of site operation.

Therefore, some research and development institutions double thread on the basis of API screw thread is optimized.Decreasing worm-pitch connected mode is such as adopted to realize.But above-mentioned screw thread production and processing difficulty, and the manufacturing cycle is long, and cost is also higher.

Thus, need to design a kind of device, the anti-twisting property adopting the junction be threaded can be improved.

Utility model content

For above-mentioned problem, the utility model aims to provide a kind of antitorque ring for sleeve pipe and comprises the thimble assembly of antitorque ring.Antitorque ring is applied in and adopts between the body that is threaded, improves the anti-twisting property of connection of thread.And the features such as it is simple to have structure, low cost of manufacture, easy for installation.

According to one side of the present utility model, a kind of antitorque ring for sleeve pipe is provided, comprise the body of ring-type, the internal diameter of body is equal with the internal diameter of body, the external diameter of body is configured to the inner chamber that can be arranged in box cupling, the both ends of the surface of body can respectively with the end contact of body being in its two ends, and at least one end face of body, be provided with axially outside lug boss circumferentially.

In actual use, this antitorque ring can be arranged among box cupling, and between two bodys, and its both ends of the surface contact with the end face of the body at two ends respectively.Therefore, the pin thread of the body at two ends can be stoped to continue to rotate, improve the anti-twisting property of connection of thread.The end face of antitorque ring and the end face close contact of body simultaneously, thus the sealing performance of junction is improve by arranging antitorque ring.Thus, by arranging antitorque ring, adopt the API body that is threaded also can meet user demand, thus body connect by the screw thread avoiding employing more complicated.Thus reduce manufacturing cost, simplify and install and maintenance, and improve site operation safety.Further, owing to being provided with axially outside lug boss circumferentially on the end face of body, in installation process, after the moment of torsion screwing body reaches certain value, the lug boss between body and body deforms along whole circumferencial direction.Thus the end face of antitorque ring extrudes at whole circumferencial direction mutually with the end face of the body contacted, and more improves anti-twisting property thus.Meanwhile, due to the end face of antitorque ring and the end face tightening of the body contacted, also improve the sealability of connection of thread more.

Preferably, boss is in the radial center place of the end face of body.This set makes the end face of the antitorque ring when lug boss is out of shape stressed more balanced, is out of shape also more balanced, thus makes sealing effectiveness better.Further, this set is easy to realize, convenient manufacture.

Preferably, the width of lug boss is 0.02 ~ 0.15 with the width ratio of antitorque ring.This kind of setting makes lug boss easily be out of shape, thus is conducive to improving anti-twisting property and sealability.

In one embodiment, the cross-sectional configuration of lug boss is arc-shaped.This set make the top of the lug boss of arc-shaped body screw active force under be easily out of shape, contact to make becoming face with the linear contact lay of body, and ensure the end contact at whole circumferencial direction and body, increase anti-twisting property and sealability thus.This set is convenient to be manufactured, and is easy to realize.

In another embodiment, the cross-sectional configuration of lug boss is trapezoidal.The top of trapezoidal lug boss is easily out of shape under the effect of body, thus at the end contact of whole circumferencial direction and body, can increase anti-twisting property and sealability thus.This set is simple, is easy to realize.

Preferably, body and lug boss into a single integrated structure.This set simplifies the structure, convenient manufacture, thus reduces manufacturing cost.

According to another aspect of the present utility model, provide a kind of thimble assembly, in the box cupling comprising sleeve pipe and be arranged on sleeve pipe and between the body of sleeve pipe according to antitorque ring recited above.This thimble assembly compact conformation, anti-twisting property is strong.

Compared with prior art, the utility model comprises following advantage.Between the body be connected, antitorque ring is installed, when threaded together, the end face tightening of the both ends of the surface of antitorque ring and tail pipe or body, thus the anti-twisting property and the sealing effectiveness that improve connection of thread.Even thus make to use API screw thread also can meet user demand.Arrange lug boss at the end face of antitorque ring, due in rundown process, lug boss is out of shape, and further increases anti-twisting property and the sealing effectiveness of connection of thread.Further, this antitorque ring self structure is simple, low cost of manufacture, convenient installation.Comprise the thimble assembly compact conformation of antitorque ring, anti-twisting property is strong.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.In the drawings:

Fig. 1 shows the stereogram according to antitorque ring of the present utility model;

Fig. 2 shows the sectional view of antitorque ring A-A in one embodiment;

Fig. 3 shows the sectional view of antitorque ring A-A in another embodiment;

Fig. 4 shows the sectional view of the antitorque ring A-A in the 3rd embodiment;

Fig. 5 shows the structure chart of thimble assembly.

In the accompanying drawings, identical parts use identical Reference numeral.Accompanying drawing is not according to the scale of reality.

Detailed description of the invention

To introduce hereinafter according to preferred embodiment of the present utility model.

Fig. 1 shows the stereogram according to antitorque ring 3 of the present utility model.As shown in Figure 1, antitorque ring 3 comprises the body 5 of ring-type.As described in figures 1 and 5, the internal diameter of the internal diameter of body 5 and the body 1 of sleeve pipe 8 is roughly equal, and the external diameter of body 5 is configured to the inner chamber of the box cupling 2 that can be arranged in sleeve pipe 8, the both ends of the surface of body 5 can respectively with the end contact of body 1 being in its two ends.Axially outside lug boss 51 circumferentially can be provided with at least one end face of body 5.That is, lug boss 51 is for being arranged on ring bodies also outwardly vertically on the end face of body 5.It should be noted that, lug boss 51 can be arranged on an end face of body 5, also can arrange on two of body 5 end face simultaneously.

In actual use, as shown in Figure 5, this antitorque ring 3 can be arranged among box cupling 2, and between two bodys 1, and its both ends of the surface contact with the end face of the body 1 at two ends respectively.Therefore, the pin thread of the body 1 at two ends can be stoped to continue to rotate, improve the anti-twisting property of connection of thread.Thus, by arranging antitorque ring 3, even if employing API is threaded, body 1 also can meet user demand, thus avoids the more complicated body 1 that is threaded of employing.Thus, cost is reduced.Meanwhile, in use, owing to being provided with lug boss 51 on the end face of antitorque ring 3.In installation process, screw after body 1 to moment of torsion reaches certain value, the lug boss 51 between body 1 and body 5 deforms, and mutually extrudes with the end face of body 1, more improves the anti-twisting property of junction.Meanwhile, also more improve the sealability of connection of thread.In addition, this antitorque ring 3 structure is simple, and low cost of manufacture is easy to installation and maintenance, and can and improve site operation safety.

When lug boss 51 is out of shape, in order to make the end face of antitorque ring 3 stressed more balanced, be out of shape also more balanced.Preferably, lug boss 51 is positioned at the radial center place of the end face of body 5, namely the center of lug boss 51 between the outer wall and inwall of antitorque ring 3.By this set, additionally provide sealing effectiveness.In addition, this set is easy to realize, convenient manufacture.

The width of lug boss 51 is 0.02 ~ 0.15 with the width ratio of antitorque ring 3.This setup makes lug boss 51 easily be out of shape, thus is conducive to improving anti-twisting property and sealability.In this application, the width of lug boss 51 refers to the size that lug boss 51 is outstanding vertically from the end face of antitorque ring 3, and the width of antitorque ring 3 is antitorque ring 3 size vertically.

In one embodiment, as shown in Figure 2, the cross-sectional configuration of lug boss 51 is arc-shaped.In the process screwing body 1, the top of the lug boss 51 of arc-shaped is easily out of shape under force, thus at the end contact of whole circumferencial direction and body 1, can increase anti-twisting property and sealability thus.This set is convenient simultaneously manufactures, and is easy to realize.

In another embodiment, as shown in Figure 3, the cross-sectional configuration of lug boss 51 is trapezoidal.The top of trapezoidal lug boss 51 is easily out of shape under the effect of body 1, thus at the end contact of whole circumferencial direction and body 1, can increase anti-twisting property and sealability thus.This set is simple, is easy to realize.

It should be noted that, protuberance 51 is not limited to this kind of structure, such as, can also be configured to the dentalation protruded from the end face of body 5, as shown in Figure 4.

Conveniently manufacture, lower cost of production, preferably, body 5 is into a single integrated structure with lug boss 51.

Antitorque ring 3 can be manufactured by metal, such as, and carbon steel or stainless steel etc.Other material manufacture can also be adopted, such as, the high-strength engineering plastics such as polyphenylene sulfide (PPS), polytetrafluoroethylene (PTFE) (PTFE), polyether-ether-ketone (PEEK).

At the scene in work progress, after body 1 is connected with box cupling 2, the distance between two bodys 1 is a scope." the interior distance of the box cupling 2 of LTC screw thread is 25.4 ± 6.35mm, and therefore for meeting on-the-spot needs, antitorque ring 3 also needs to design multiple width dimensions, and general interval 1-3mm designs a kind of such as, to adopt 7.Before connection pipe body 1, first draw in advance two bodys 1 and box cupling 2 install after between distance, select suitable antitorque ring 3.Box cupling 2 and one end body 1 are tightened in advance, load the suitable antitorque ring 3 selected, and connect other end body 1, until screw.

As shown in Figure 5, thimble assembly 10 comprise sleeve pipe 8 and to be arranged in the box cupling 2 of sleeve pipe 8 and between the body 1 of sleeve pipe 8 antitorque ring 3.This thimble assembly 10 compact conformation, anti-twisting property is strong.Owing to having installed antitorque ring 3 between body 1, the both ends of the surface of antitorque ring 3 and the end face tightening of body 1, thus improve anti-twisting property and the sealing effectiveness of connection of thread.The lug boss 51 being arranged on the end face of antitorque ring 3 is screwed to distortion, further increases anti-twisting property and the sealing effectiveness of connection of thread.Meanwhile, this antitorque ring 3 self structure is simple, low cost of manufacture, convenient installation.

It should be noted that, this antitorque ring 3 structure is simple, easily produces, has versatility, can be widely used between any two connectors needing to improve anti-twisting property.

The foregoing is only preferred embodiment of the present utility model; but the utility model protection domain is not limited thereto; any those skilled in the art is in technical scope disclosed in the utility model; can easily carry out changing or changing, and this change or change all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.

Claims (7)

1. the antitorque ring for sleeve pipe, it is characterized in that, comprise the body of ring-type, the internal diameter of described body is equal with the internal diameter of the body of sleeve pipe, the external diameter of described body is configured to the inner chamber of the box cupling that can be arranged in sleeve pipe, the both ends of the surface of described body can respectively with the end contact of body being in its two ends, and at least one end face of described body, be provided with axially outside lug boss circumferentially.

2. antitorque ring according to claim 1, is characterized in that, described boss is in the radial center place of the end face of described body.

3. antitorque ring according to claim 1 and 2, is characterized in that, the width of described lug boss is 0.02 ~ 0.15 with the width ratio of described antitorque ring.

4. antitorque ring according to claim 1 and 2, is characterized in that, the cross-sectional configuration of described lug boss is arc-shaped.

5. antitorque ring according to claim 1 and 2, is characterized in that, the cross-sectional configuration of described lug boss is trapezoidal.

6. antitorque ring according to claim 1 and 2, is characterized in that, described body and described lug boss into a single integrated structure.

7. a thimble assembly, the antitorque ring according to any one of claim 1 to 6 in the box cupling comprising sleeve pipe and be arranged on sleeve pipe and between the body of sleeve pipe.