CN204691698U - Coiled tubing joint - Google Patents
Coiled tubing joint Download PDFInfo
- Publication number
- CN204691698U CN204691698U CN201520312735.8U CN201520312735U CN204691698U CN 204691698 U CN204691698 U CN 204691698U CN 201520312735 U CN201520312735 U CN 201520312735U CN 204691698 U CN204691698 U CN 204691698U
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- CN
- China
- Prior art keywords
- top connection
- ball seat
- lower contact
- coiled tubing
- tubing joint
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
Coiled tubing joint, comprise top connection, lower contact and ball seat, it is characterized in that, described top connection and described lower contact docking, and form cavity in top connection and lower contact inside, described ball seat is arranged on the inside of described cavity, described ball seat is cylinder type, the inlet inside diameter of described top connection is greater than the internal diameter of the outlet of described lower contact, and is provided with the position limiting structure of stepped ramp type in the inner side of the outlet of described lower contact, and the rear side of ball seat is provided with chute and coordinates with the inwall of described top connection.Coiled tubing joint described in the utility model, by the design of the chute on ball seat, described ball seat can be made to slide in top connection, lower contact inner space, and be provided with position limiting structure due to lower contact inside, it is inner that described ball seat can slip into described position limiting structure, described ball seat is played to the effect of buffering, ensure stable the playing a role of whole coiled tubing joint, and the ability of withstand shock improves.
Description
Technical field
The utility model relates to a kind of coiled tubing joint, belongs to oil field, coal gas field fracturing unit technical field, is extensively suitable for oil gas field, the staged fracturing transformation of straight well that coal bed gas field setting of casing does not have perforation completion, horizontal well reservoir.
Background technology
In oil field, coal gas field fracturing unit, coiled tubing joint is conventional parts, coiled tubing joint needs to stand various impact, general coiled tubing joint easily produces sex change and loosens under the effect impacted, make coiled tubing joint failure and break down, how designing a kind of coiled tubing joint of high life, is the technical problems to be solved in the utility model.
Utility model content
The utility model provides a kind of coiled tubing joint, solves low problem in coiled tubing joint in prior art application life.
For achieving the above object, the utility model carrys out specific implementation by the following technical programs:
Coiled tubing joint, comprise top connection, lower contact and ball seat, described top connection and described lower contact docking, and form cavity in top connection and lower contact inside, described ball seat is arranged on the inside of described cavity, described ball seat is cylinder type, the inlet inside diameter of described top connection is greater than the internal diameter of the outlet of described lower contact, and the position limiting structure of stepped ramp type is provided with in the inner side of the outlet of described lower contact, the rear side of ball seat is provided with chute and coordinates with the inwall of described top connection, and on the inwall of top connection, be provided with the tooth-shape structure coordinated with chute, the rear side of described ball seat can be slided in the inner space of lower contact, one end of ball seat and the inwall of described top connection are slidably connected and are sealed by two seals circle, top connection described in twice between sealing ring has the outer wall of several apertures through described top connection.
The interface of described top connection is set to the joint face of inner conical.
The joint face of described inner conical is processed with screw thread.
The interface of described lower contact is provided with the joint face of male-tapered.
The joint face of described male-tapered is processed with screw thread.
Coiled tubing joint described in the utility model, by the design of the chute on ball seat, described ball seat can be made to slide in top connection, lower contact inner space, and be provided with position limiting structure due to lower contact inside, it is inner that described ball seat can slip into described position limiting structure, described ball seat is played to the effect of buffering, ensure stable the playing a role of whole coiled tubing joint, and the ability of withstand shock improves.
Accompanying drawing explanation
According to drawings and embodiments the utility model is described in further detail below.
Fig. 1 is the structure chart of coiled tubing joint.
Detailed description of the invention
As shown in Figure 1, coiled tubing joint described in the utility model embodiment, comprise top connection 11, lower contact 13 and ball seat 12, described top connection 11 and described lower contact 13 are docked, and form cavity in top connection 11 and lower contact 13 inside, described ball seat 12 is arranged on the inside of described cavity, described ball seat 12 is cylinder type, the inlet inside diameter of described top connection 11 is greater than the internal diameter of the outlet of described lower contact 13, and the position limiting structure of stepped ramp type is provided with in the inner side of the outlet of described lower contact 13, the rear side of ball seat is provided with chute and coordinates with the inwall of described top connection, and on the inwall of top connection, be provided with the tooth-shape structure coordinated with chute, the rear side of described ball seat can be slided in the inner space of lower contact, one end of ball seat and the inwall of described top connection are slidably connected and are sealed by two seals circle, top connection described in twice between sealing ring has the outer wall of several apertures through described top connection.
The interface of described top connection 11 is set to the joint face of inner conical.
The joint face of described inner conical is processed with screw thread.
The interface of described lower contact 13 is provided with the joint face of male-tapered.
The joint face of described male-tapered is processed with screw thread.
Coiled tubing joint described in the utility model, by the design of the chute on ball seat, described ball seat can be made to slide in top connection, lower contact inner space, and be provided with position limiting structure due to lower contact inside, it is inner that described ball seat can slip into described position limiting structure, described ball seat is played to the effect of buffering, ensure stable the playing a role of whole coiled tubing joint, and the ability of withstand shock improves.
Last it is noted that the foregoing is only the preferred embodiment of utility model, be not limited to utility model, although be described in detail utility model with reference to previous embodiment, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within all spirit in utility model and principle, any amendment done, equivalent replacement, improvement etc., within the protection domain that all should be included in utility model.
Claims (6)
1. coiled tubing joint, comprise top connection, lower contact and ball seat, it is characterized in that, described top connection and described lower contact docking, and form cavity in top connection and lower contact inside, described ball seat is arranged on the inside of described cavity, described ball seat is cylinder type, the inlet inside diameter of described top connection is greater than the internal diameter of the outlet of described lower contact, and the position limiting structure of stepped ramp type is provided with in the inner side of the outlet of described lower contact, the rear side of ball seat is provided with chute and coordinates with the inwall of described top connection, and on the inwall of top connection, be provided with the tooth-shape structure coordinated with chute, the rear side of described ball seat can be slided in the inner space of lower contact.
2. coiled tubing joint as claimed in claim 1, it is characterized in that, the interface of described top connection is set to the joint face of inner conical.
3. coiled tubing joint as claimed in claim 2, is characterized in that, the joint face of described inner conical is processed with screw thread.
4. coiled tubing joint as claimed in claim 1, it is characterized in that, the interface of described lower contact is provided with the joint face of male-tapered.
5. coiled tubing joint as claimed in claim 4, is characterized in that, the joint face of described male-tapered is processed with screw thread.
6. coiled tubing joint as claimed in claim 1, it is characterized in that, one end of ball seat and the inwall of described top connection are slidably connected and are sealed by two seals circle, and the top connection described in twice between sealing ring has the outer wall of several apertures through described top connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520312735.8U CN204691698U (en) | 2015-05-14 | 2015-05-14 | Coiled tubing joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520312735.8U CN204691698U (en) | 2015-05-14 | 2015-05-14 | Coiled tubing joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204691698U true CN204691698U (en) | 2015-10-07 |
Family
ID=54232001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520312735.8U Active CN204691698U (en) | 2015-05-14 | 2015-05-14 | Coiled tubing joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204691698U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456645A (en) * | 2019-01-22 | 2020-07-28 | 中国石油天然气股份有限公司 | Continuous oil pipe connector |
-
2015
- 2015-05-14 CN CN201520312735.8U patent/CN204691698U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456645A (en) * | 2019-01-22 | 2020-07-28 | 中国石油天然气股份有限公司 | Continuous oil pipe connector |
| CN111456645B (en) * | 2019-01-22 | 2022-05-10 | 中国石油天然气股份有限公司 | Continuous oil pipe connector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |