CN204492718U - A kind of safety is given up - Google Patents
A kind of safety is given up Download PDFInfo
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- CN204492718U CN204492718U CN201420806200.1U CN201420806200U CN204492718U CN 204492718 U CN204492718 U CN 204492718U CN 201420806200 U CN201420806200 U CN 201420806200U CN 204492718 U CN204492718 U CN 204492718U
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- lower contact
- top connection
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- interior pipe
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Abstract
The utility model provides a kind of safety and gives up, and comprising the top connection for connecting tubing string, being fixedly mounted on the interior pipe bottom top connection, and ring is located at the lower contact of top connection and interior pipe outside; The inner side of lower contact is provided with jump ring, and the lower surface setting of top connection is close to, to limit the position of bottom in lower contact of top connection in the upper surface of jump ring; Interior pipe is formed with supporting section, piston section and linkage section from top to bottom, and supporting section is against the free end end of jump ring; Be formed with cavity between piston section and lower contact, in cavity, be provided with the piston that can move up and down in cavity; The lateral surface of linkage section and the medial surface of lower contact are fitted and are arranged.This inside of giving up safely is formed with hydraulic system, to be given up the pulling force that produces of tubing string connected by hydraulic system balancing safety, thus protect safety give up in shear pin, avoid shear pin in fracturing process because of stressed excessive and cut off in advance.
Description
Technical field
The utility model relates to a kind of safety and gives up, and particularly relates to a kind of safety that can meet fractured horizontal well job requirements and gives up.
Background technology
It is a kind of in oil gas well drilling, completion, formation testing tubing string that safety is given up, and is separated the instrument of upper and lower part tubing string by terrestrial operation.Safety is given up and is entered well with other instruments, and when bottom tubing string meets card, use safety releasing tool is put bottom aside and met card tubing string, proposes top tubing string.Safety is given up fields such as being widely used in drilling well, completion, formation testing, oil recovery, reservoir reconstruction.
Safety joint conventional at present has mechanical type, fluid pressure type, mechanical and hydraulic double-acting formula.Conventional mechanical formula safety joint produces pulling force by upper lifting pipe post, realizes giving up safely separation after breaking shear pin.Fluid pressure type is given up safely by pitching, just the mode such as to be suppressed and raise pressure in tubing string and realize safety and to give up separation.Mechanical and hydraulic double-acting formula releasing tool possesses fluid pressure type and mechanical type two kinds of separate modes simultaneously, can select mode of operation as the case may be.Existing safety is given up and be there is following problem: when using packer to carry out pressing crack construction, due to the effect such as pressure, temperature, tubing string is subject to axial tension, and conventional mechanical is given up safely and can be separated in advance in pressing crack construction process, and impact construction is carried out smoothly.Hydraulic releasing needs pitching to operate, and can overcome the impact of the effect such as pressure, temperature, but during horizontal well operation, if tubing string hydrophthalmia is by foreign matters from being blockeds such as sand grains, will not possess stifled ball and to take a seat condition, hydraulic releasing can not normal separation.
Such as, use open hole packer carry out bore hole sand fracturing, packer grappling, during operation tubing string be stressed, temperature impact bear pulling force, conventional mechanical can not be used to give up; Sand fracturing has sand grains to block possibility of oil pipe, and use hydraulic releasing existence pumping cannot block up the risk that ball puts in place, field operation is restricted.
Therefore, finding that a kind of safety meeting fractured horizontal well job requirements gives up is on-the-spot completion practice technical problem urgently to be resolved hurrily.
Summary of the invention
In order to overcome the above problems; the utility model provides a kind of safety and gives up; this inside of giving up safely is formed with hydraulic system; the pulling force that the tubing string of giving up connection by hydraulic system balancing safety produces; thus protect safety give up in shear pin, avoid shear pin in fracturing process because of stressed excessive and cut off in advance.
To achieve these goals, the utility model provides a kind of safety and gives up, and comprising the top connection for connecting tubing string, being fixedly mounted on the interior pipe bottom top connection, and ring is located at the lower contact of top connection and interior pipe outside; The inner side of lower contact is provided with jump ring, and the lower surface setting of top connection is close to, to limit the position of bottom in lower contact of top connection in the upper surface of jump ring; Interior pipe is formed with supporting section, piston section and linkage section from top to bottom, and supporting section is against the free end end of jump ring; Be formed with cavity between piston section and lower contact, in cavity, be provided with the piston that can move up and down in cavity; The lateral surface of linkage section and the medial surface of lower contact are fitted and are arranged; during fracturing work; high-pressure fluid flow in cavity; the linkage section of the internal pipe of high-pressure fluid produces downward thrust; simultaneously to piston generation thrust upwards; piston press jump ring thus upwardly lower contact, make lower contact can not with top connection generation relative movement, thus protection shear pin is not by shearing force effect.
As further optimization of the present utility model, be fixedly connected with between top connection with lower contact by shear pin, shear pin is stressed can be cut off.
As further optimization of the present utility model, the inner side of lower contact is provided with jump-ring slot, and jump ring is arranged in jump-ring slot, and when jump ring free end departs from supporting section, jump ring departs from from jump-ring slot.
As further optimization of the present utility model, the lower end of piston section is provided with inlet opening, and the lower contact corresponding to piston section upper end is provided with fluid hole.
As further optimization of the present utility model, the length of the cavity that piston section and lower contact are formed is greater than the length of supporting section, the outside diameter of piston section is less than the outside diameter of supporting section, and when contacting with jump ring to make the piston section of interior pipe, jump ring departs from from the jump-ring slot lower contact.
As further optimization of the present utility model, interior pipe, piston and lower contact form hydraulic system, and safety is in series with multiple hydraulic system from top to bottom in giving up, and is connected by linkage section.
As further optimization of the present utility model, top connection, lower contact and interior pipe are arranged all with one heart.
As further optimization of the present utility model, be threaded connection between top connection and interior pipe.
The advantage that the utility model has is: this inside of giving up safely is formed with hydraulic system; the pulling force that the tubing string of giving up connection by hydraulic system balancing safety produces; thus protect safety give up in shear pin, avoid shear pin in fracturing process because of stressed excessive and cut off in advance.
Accompanying drawing explanation
Fig. 1 is the structural representation that in the utility model, safety is given up;
Fig. 2 is the sectional view of A-A in Fig. 1.
Detailed description of the invention
Below, by exemplary embodiment, the utility model is specifically described.But should be appreciated that element, structure and feature in an embodiment also can be attached in other embodiments valuably when not describing further.
See Fig. 1 and Fig. 2, as shown in the figure, safety of the present utility model is given up the top connection 1 comprised for connecting tubing string, is fixedly mounted on the interior pipe 6 bottom top connection 1, and ring is located at the lower contact 2 of top connection 1 and interior pipe 6 outside, top connection 1, lower contact 2 and interior pipe 6 are arranged all with one heart; Wherein be fixedly connected with by shear pin 3 between top connection 1 with lower contact 2, shear pin 3 is stressed can be cut off; The inner side of lower contact 2 is provided with jump-ring slot (not shown), for installing jump ring 4 in jump-ring slot, wherein the upper surface of jump ring 4 is arranged on the lower surface of top connection 1, for limiting the position of bottom in lower contact 2 of top connection 1, meanwhile, the jump ring be arranged in jump-ring slot can retrain the motion of lower contact 2.
Continue see accompanying drawing, interior pipe 6 is formed with three sections from top to bottom, and wherein first paragraph is supporting section 61, and supporting section 61 is against the free end end of jump ring 4, to support jump ring 4, prevents jump ring 4 from dropping out in the jump-ring slot lower contact 2; Second segment is piston section 62, cavity is formed between piston section 62 and lower contact 2, the piston 5 that can move up and down in cavity is provided with in cavity, the lower end of piston section 62 is provided with inlet opening 621, fluid hole 21 is provided with corresponding in the upper end lower contact 2 of piston section 62, liquid enters in cavity from inlet opening 621, and flows out from fluid hole 21.The length of the cavity that piston section 62 and lower contact 2 are formed is greater than the length of supporting section 61, the outside diameter of piston section 62 is less than the outside diameter of supporting section 61, like this when interior pipe moves upward, when the piston section of interior pipe contacts with jump ring, jump ring just can depart from from the jump-ring slot lower contact; 3rd section is linkage section 63, and the lateral surface of linkage section 63 and the medial surface of lower contact 2 are fitted and arranged.Above-mentioned interior pipe, piston and lower contact form hydraulic system, and as a preferably embodiment of the present utility model, the safety in the utility model is in series with multiple hydraulic system from top to bottom in giving up, and is connected by linkage section.
As a kind of embodiment, be threaded connection between the top connection 1 in the utility model and interior pipe 6.
In order to the safety further illustrated in the utility model is given up had advantage, below the operating principle of giving up safely in conjunction with this is described by we:
When carrying out giving up operation, first safety of the present utility model given up and be arranged on packer top, enter well with other downhole tools, top connection is arranged on tubing string lower end by the screw thread on top connection top, when tubing string internal and external pressure balance, hydraulic system is inoperative; When carrying out pressure break effect, because high-pressure fluid pumps in tubing string, flexible under cold high-pressure fluid effect in tubing string, pulling force is produced to tubing string, drive the top connection be connected with tubing string to promote, top connection drives lower contact and interior Guan Shangyi, and therefore top connection is to shear pin generation pulling force upwards; Meanwhile, high-pressure fluid enters in the cavity of accommodating piston from the inlet of interior pipe, piston is pushed to the lower surface of jump ring by high-pressure fluid, the linkage section of the internal pipe of high-pressure fluid produces downward thrust, interior pipe is so just made to produce downward pulling force to top connection, and then making the shear pin stress balance of top connection and lower contact place, protection shear pin is not cut off; After fracturing work terminates, tubing string internal and external pressure balance, hydraulic system fails, shear pin cut off by upper lifting pipe post, continuation is carried, and jump ring enters into piston section from the supporting section of interior pipe, and the external diameter because of piston section is less than the external diameter of supporting section, thus jump ring is departed from from jump-ring slot, safety joint removes lower contact part and is all suggested pit shaft.
Be appreciated that the utility model is described by some embodiments, those skilled in the art know, when not departing from spirit and scope of the present utility model, can carry out various change or equivalence replacement to these characteristic sum embodiments.In addition, under instruction of the present utility model, can modify to adapt to concrete situation and material to these characteristic sum embodiments and spirit and scope of the present utility model can not be departed from.Therefore, the utility model is by the restriction of specific embodiment disclosed herein, and the embodiment in the right of all the application of falling into all belongs in the scope that the utility model protects.
Claims (8)
1. a safety is given up, comprise the top connection (1) for connecting tubing string, be fixedly mounted on the interior pipe (6) of top connection (1) bottom, and ring is located at top connection (1) lower contact (2) outside with interior pipe (6); It is characterized in that, the inner side of lower contact (2) is provided with jump ring (4), the lower surface setting of top connection (1) is close in the upper surface of jump ring (4), to limit the position of bottom in lower contact (2) of top connection (1); Interior pipe (6) is formed with supporting section (61), piston section (62) and linkage section (63) from top to bottom, and supporting section (61) is against the free end end of jump ring (4); Be formed with cavity between piston section (62) and lower contact (2), in cavity, be provided with the piston (5) that can move up and down in cavity; The lateral surface of linkage section (63) and the medial surface of lower contact (2) are fitted and are arranged, during fracturing work, high-pressure fluid flow in cavity, the linkage section of the internal pipe of high-pressure fluid produces downward thrust, simultaneously to piston generation thrust upwards, piston press jump ring thus upwardly lower contact, make lower contact can not with top connection generation relative movement, to make shear pin not by shearing force effect.
2. safety according to claim 1 is given up, and it is characterized in that, be fixedly connected with by shear pin (3) between top connection (1) with lower contact (2), shear pin (3) is stressed can be cut off.
3. safety according to claim 1 is given up, and it is characterized in that, the inner side of lower contact (2) is provided with jump-ring slot, and jump ring is arranged in jump-ring slot, and when jump ring free end departs from supporting section, jump ring departs from from jump-ring slot.
4. safety according to claim 3 is given up, it is characterized in that, the lower end of piston section (62) is provided with inlet opening (621), is provided with fluid hole (21) corresponding in the lower contact (2) of piston section (62) upper end.
5. the safety according to any one of claim 1-4 is given up, it is characterized in that, the length of the cavity that piston section (62) and lower contact (2) are formed is greater than the length of supporting section (61), the outside diameter of piston section (62) is less than the outside diameter of supporting section (61), when contacting with jump ring to make the piston section of interior pipe, jump ring departs from from the jump-ring slot lower contact.
6. safety according to claim 5 is given up, it is characterized in that, interior pipe (6), piston (5) and lower contact (2) form hydraulic system, and safety is in series with multiple hydraulic system from top to bottom in giving up, and is connected by linkage section.
7. safety according to claim 1 is given up, and it is characterized in that, top connection (1), lower contact (2) and interior pipe (6) are arranged all with one heart.
8. safety according to claim 1 is given up, and it is characterized in that, is threaded connection between top connection (1) and interior pipe (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420806200.1U CN204492718U (en) | 2014-12-18 | 2014-12-18 | A kind of safety is given up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420806200.1U CN204492718U (en) | 2014-12-18 | 2014-12-18 | A kind of safety is given up |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204492718U true CN204492718U (en) | 2015-07-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420806200.1U Active CN204492718U (en) | 2014-12-18 | 2014-12-18 | A kind of safety is given up |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204492718U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153192A (en) * | 2021-01-13 | 2021-07-23 | 西南石油大学 | Hydraulic claw tool for preventing drill jamming and blocking |
| CN113944434A (en) * | 2021-10-28 | 2022-01-18 | 大庆市润百利科技有限公司 | Pressure-resistant safety short circuit |
-
2014
- 2014-12-18 CN CN201420806200.1U patent/CN204492718U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153192A (en) * | 2021-01-13 | 2021-07-23 | 西南石油大学 | Hydraulic claw tool for preventing drill jamming and blocking |
| CN113944434A (en) * | 2021-10-28 | 2022-01-18 | 大庆市润百利科技有限公司 | Pressure-resistant safety short circuit |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |