CN204327023U - A kind of tubing string release device - Google Patents
A kind of tubing string release device Download PDFInfo
- Publication number
- CN204327023U CN204327023U CN201420797298.9U CN201420797298U CN204327023U CN 204327023 U CN204327023 U CN 204327023U CN 201420797298 U CN201420797298 U CN 201420797298U CN 204327023 U CN204327023 U CN 204327023U
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- CN
- China
- Prior art keywords
- joint
- hydraulic pressure
- pressure hole
- hermetically
- sealed construction
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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.)
- Expired - Fee Related
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Abstract
The utility model provides a kind of tubing string release device, comprising: the first joint, the accommodation space that the first joint comprises sidewall and formed by sidewall, sidewall is provided with the first hydraulic pressure hole and the second hydraulic pressure hole; Hermetically-sealed construction, hermetically-sealed construction is connected with the first joint; Elastic claw, the first end of elastic claw is connected with hermetically-sealed construction, and the external surface of elastic claw is distributed with multiple boss structure; Piston body, piston body is arranged in accommodation space, one end of piston body is connected with braced structures, piston body comprises piston head and piston rod, piston head can slide along the axial direction of the first joint between the first hydraulic pressure hole and the second hydraulic pressure hole, accommodation space between first hydraulic pressure hole and piston head is the first chamber, and the accommodation space between the second hydraulic pressure hole piston head is the second chamber; Piston rod, through hermetically-sealed construction, is slidably connected with hermetically-sealed construction; Second joint, the second end of elastic claw is inserted in the second joint, and the second joint inside is provided with mates with boss structure the groove structure be connected.
Description
Technical field
The utility model relates to oil well kit design field, particularly relates to a kind of tubing string release device.
Background technology
Tubing string Ka Jing is the modal accident in oil field, when passing through repeatedly to carry out handling with workover rig, after rotating stuck-freeing failure, when well cleanout and reverse cleanout does not all have any effect, generally all to go up overhaul process, overhaul disposal cost is general higher, and it is longer to account for the well time, has had a strong impact on normal production and the maintenance of oil-water well.
Utility model content
The purpose of this utility model is to provide a kind of tubing string release device, under many circumstances can not the effective unfreezing of end-on card tubing string in order to solve existing workover rig, and workover cost is high and affect the normal production of oil-water well and the problem of maintenance.
To achieve these goals, the utility model provides a kind of tubing string release device, comprising:
First joint, the accommodation space that described first joint comprises sidewall and formed by described sidewall, described sidewall is provided with the first hydraulic pressure hole for connecing hydraulic joint and the second hydraulic pressure hole;
Hermetically-sealed construction, described hermetically-sealed construction is connected with one end of described first joint, with accommodation space described in shutoff;
Elastic claw, the first end of described elastic claw is connected with described hermetically-sealed construction, and is distributed with multiple boss structure along the circumferential direction of described hermetically-sealed construction on the external surface of described elastic claw;
Piston body, described piston body is arranged in described accommodation space, one end of described piston body is connected with braced structures, wherein, described piston body comprises piston head and piston rod, described piston head can slide along the axial direction of described first joint between described first hydraulic pressure hole and described second hydraulic pressure hole, and the accommodation space between described first hydraulic pressure hole and described piston head is the first chamber, and the accommodation space between described second hydraulic pressure hole and described piston head is the second chamber; Described piston rod, through described hermetically-sealed construction, is slidably connected with described hermetically-sealed construction;
Second joint, the second end of described elastic claw is inserted in described second joint, and described second joint inside is provided with mates with described boss structure the groove structure be connected;
Wherein, when described piston head is subject to the hydraulic action of described first chamber, drive described braced structures to slide by piston rod, until described braced structures is connected in described elastic claw, described boss structure mates with described groove structure and is connected; When described piston head is subject to the hydraulic action of described second chamber, drive described braced structures to slide by piston rod, until described braced structures is deviate from described elastic claw, described boss structure and described groove structure are separated.
Wherein, above-mentioned tubing string release device, also comprises: the first hydraulic joint be connected with described first hydraulic pressure hole and the second hydraulic joint be connected with described second hydraulic pressure hole.
Wherein, the external diameter of described piston head is identical with the internal diameter of described first joint, and the external diameter of described piston rod is identical with the internal diameter of described hermetically-sealed construction.
The utility model embodiment has following beneficial effect:
The tubing string release device of the utility model embodiment, second joint is connected with chance card tubing string, by hydraulic control, described second joint and described tubing string release device are disconnected suddenly, under the effect of inertia force, described second joint is fast downlink together with described chance card tubing string, and what the generation of end-on stuck point was huge presses down impact force, makes to meet card tubing string easily by unfreezing, avoid the economic loss that heavy repair task brings, and oil-water well can be returned to normal production as early as possible.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Description of reference numerals:
1-first joint, 11-first hydraulic pressure hole, 12-second hydraulic pressure hole, 2-first hydraulic joint, 3-piston body, 31-piston head, 32-piston rod, 4-second hydraulic joint, 5-hermetically-sealed construction, 6-elastic claw, 7-braced structures, 8-second joint.
Detailed description of the invention
For making the technical problems to be solved in the utility model, technical scheme and advantage clearly, be described in detail below in conjunction with specific embodiment and accompanying drawing.
The utility model embodiment solves existing workover rig under many circumstances can not the effective unfreezing of end-on card tubing string, and affect the normal production of oil-water well and the problem of maintenance, the utility model embodiment provides a kind of tubing string release device, as shown in Figure 1, comprising:
First joint 1, the accommodation space that described first joint 1 comprises sidewall and formed by described sidewall, described sidewall is provided with the first hydraulic pressure hole 11 and the second hydraulic pressure hole 12 for connecing hydraulic joint, further, described first hydraulic pressure hole 11 is connected with the first hydraulic joint 2, and described second hydraulic pressure hole 12 is connected with the second hydraulic joint 4;
Hermetically-sealed construction 5, hermetically-sealed construction 5 is fixedly connected on one end of the first joint 1 with accommodation space described in shutoff;
Elastic claw 6, the first end of elastic claw 6 is connected with hermetically-sealed construction 5, and is evenly distributed with multiple boss structure along the circumferential direction of described hermetically-sealed construction 5 on the external surface of described elastic claw 6;
Piston body 3, described piston body 3 is arranged in the accommodation space of described first joint 1, and one end of described piston body is connected with braced structures 7, concrete, and described braced structures 7 can be specially a support set.
Further, piston body 3 comprises piston head 31 and piston rod 32, piston head 31 can slide along the axial direction of the first joint 1 between the first hydraulic pressure hole 11 and the second hydraulic pressure hole 12, the accommodation space of the first joint 1 is divided into the first chamber and the second chamber by piston head 31, accommodation space between first hydraulic pressure hole 11 and piston head 31 is the first chamber, and the accommodation space between the second hydraulic pressure hole 12 and piston head 31 is the second chamber; Piston rod 32 is through hermetically-sealed construction 5, and be slidably connected with hermetically-sealed construction 5, the external diameter of piston rod 32 is identical with the internal diameter of described hermetically-sealed construction 5, and piston rod 32 and hermetically-sealed construction 5 form slipper seal, and in addition, the external diameter of piston head 31 is identical with the internal diameter of the first joint 1;
Second joint 8, the second end of elastic claw 6 is inserted in the second joint 8, and the second joint 8 inside is provided with mates with the boss structure of elastic claw 6 groove structure be connected;
Wherein, when piston head 31 is subject to the hydraulic action of the first chamber, drive braced structures 7 to slide by piston rod 32, until braced structures 7 is connected in elastic claw 6, boss structure mates with described groove structure and is connected; When described piston head 31 is subject to the hydraulic action of described second chamber, drive described braced structures 7 to slide by piston rod 32, until described braced structures 7 is deviate from described elastic claw 6, boss structure and groove structure are separated.
The tubing string release device of the utility model embodiment, can remove the jam of meeting card tubing string rapidly, and easy to operate, and practicality is high.
Illustrate the implementation procedure of the utility model embodiment below.
In specific embodiment of the utility model, the second joint 8 is connected to and meets card tubing string topmost, then the boss structure of elastic claw 6 is inserted in the groove structure of the second joint 8, hydraulic pressure is added to the first hydraulic joint 2, first hydraulic pressure hole 11 feed liquor, hydraulic drive piston body 3 is descending, drive braced structures 7 descending, braced structures 7 is connected in elastic claw 6, the boss structure of elastic claw 6 is mated with the groove structure of the second joint 8 be connected, thus realize elastic claw 6 and be connected with the second the firm of joint 8, with working rig upper lifting pipe post release device, now, meet card tubing string also upwards to be mentioned, along with continuous rising, the upper lifting force of meeting suffered by card tubing string continues to increase, when reaching default upper lifting force, hydraulic pressure is added to the second hydraulic joint 4, second hydraulic pressure hole 12 feed liquor, under the effect of hydraulic coupling, piston body 3 is up, drive braced structures 7 up, braced structures 7 is deviate from elastic claw 6, boss structure and groove structure are separated, second joint 8 is descending suddenly together with chance card tubing string, the inertia force that the gravity of tubing string and weight produce combines and acts on chance stuck point, can produce and meet the larger downward impact force of card tubing string than normally transferring, make to meet card tubing string and easily can remove jam, avoid the economic loss that heavy repair task brings, oil-water well is made to recover normal production as early as possible.
The tubing string release device of the utility model embodiment, meets card tubing string by hydraulic control and carries out unfreezing, improve the unfreezing probability of meeting card tubing string, simultaneously simple to operate, shortens the well workover time, avoids the economic loss that heavy repair task brings.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. a tubing string release device, is characterized in that, comprising:
First joint (1), the accommodation space that described first joint (1) comprises sidewall and formed by described sidewall, described sidewall is provided with the first hydraulic pressure hole (11) for connecing hydraulic joint and the second hydraulic pressure hole (12);
Hermetically-sealed construction (5), described hermetically-sealed construction (5) is connected with one end of described first joint (1), with accommodation space described in shutoff;
Elastic claw (6), the first end of described elastic claw (6) is connected with described hermetically-sealed construction (5), and is distributed with multiple boss structure along the circumferential direction of described hermetically-sealed construction (5) on the external surface of described elastic claw (6);
Piston body (3), described piston body (3) is arranged in described accommodation space, one end of described piston body (3) is connected with braced structures (7), wherein, described piston body (3) comprises piston head (31) and piston rod (32), described piston head (31) can slide along the axial direction of described first joint (1) between described first hydraulic pressure hole (11) and described second hydraulic pressure hole (12), and the accommodation space between described first hydraulic pressure hole (11) and described piston head (31) is the first chamber, accommodation space between described second hydraulic pressure hole (12) and described piston head (31) is the second chamber, described piston rod (32), through described hermetically-sealed construction (5), is slidably connected with described hermetically-sealed construction (5),
Second joint (8), the second end of described elastic claw (6) is inserted in described second joint (8), and described second joint (8) inside is provided with mates with described boss structure the groove structure be connected;
Wherein, when described piston head (31) is subject to the hydraulic action of described first chamber, described braced structures (7) is driven to slide by piston rod (32), until described braced structures (7) is connected in described elastic claw (6), described boss structure mates with described groove structure and is connected; When described piston head (31) is subject to the hydraulic action of described second chamber, described braced structures (7) is driven to slide by piston rod (32), until described braced structures (7) is deviate from described elastic claw (6), described boss structure and described groove structure are separated.
2. tubing string release device according to claim 1, it is characterized in that, also comprise: the first hydraulic joint (2) be connected with described first hydraulic pressure hole (11) and the second hydraulic joint (4) be connected with described second hydraulic pressure hole (12).
3. tubing string release device according to claim 1, it is characterized in that, the external diameter of described piston head (31) is identical with the internal diameter of described first joint (1), and the external diameter of described piston rod (32) is identical with the internal diameter of described hermetically-sealed construction (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420797298.9U CN204327023U (en) | 2014-12-15 | 2014-12-15 | A kind of tubing string release device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420797298.9U CN204327023U (en) | 2014-12-15 | 2014-12-15 | A kind of tubing string release device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204327023U true CN204327023U (en) | 2015-05-13 |
Family
ID=53163395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420797298.9U Expired - Fee Related CN204327023U (en) | 2014-12-15 | 2014-12-15 | A kind of tubing string release device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204327023U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703731A (en) * | 2016-11-22 | 2017-05-24 | 中海油能源发展股份有限公司 | Locking and sealing device for quick butt joint of expansion cone and implementation method |
| CN112943098A (en) * | 2021-04-22 | 2021-06-11 | 成都理工大学 | Auxiliary running device for hydraulic support type tubular column |
-
2014
- 2014-12-15 CN CN201420797298.9U patent/CN204327023U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703731A (en) * | 2016-11-22 | 2017-05-24 | 中海油能源发展股份有限公司 | Locking and sealing device for quick butt joint of expansion cone and implementation method |
| CN112943098A (en) * | 2021-04-22 | 2021-06-11 | 成都理工大学 | Auxiliary running device for hydraulic support type tubular column |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20161215 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |