CN201756940U - Expansion self-sealing tubing stopper - Google Patents
Expansion self-sealing tubing stopper Download PDFInfo
- Publication number
- CN201756940U CN201756940U CN2010202914194U CN201020291419U CN201756940U CN 201756940 U CN201756940 U CN 201756940U CN 2010202914194 U CN2010202914194 U CN 2010202914194U CN 201020291419 U CN201020291419 U CN 201020291419U CN 201756940 U CN201756940 U CN 201756940U
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- packing element
- core pipe
- sealing
- tubing
- tubing plug
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Abstract
The utility model provides an expansion self-sealing tubing stopper, which comprises a core tube, an expandable rubber drum and a packaging component. The rubber drum is sleeved outside the core tube, a space used for containing expansion reaction chemical agent is arranged between the rubber drum and the core tube, and the packaging component is used for sealing the space and leading the rubber drum to be fixedly connected with the core tube. The expansion reaction chemical agent inside the tubing stopper leads the rubber drum of the tubing stopper to expand so as to seal a tubing, the sealing manner of the expansion self-sealing tubing stopper in use requires no special reposing joint or sealing section to be arranged inside the tubing without worrying about corrosion and scaling of the inner wall of a tube column to affect the sealing performance of the stopper, and the stopper realizes effective long-term sealing effect.
Description
Technical field
The utility model relates to the blowout prevention technology field of oil field operation, refers in particular to a kind of expansion self-sealing tubing plug.
Background technology
At present, in oil, gas, the job execution of well lift pipe string, be used to prevent that the tubing plug that the inner overflow of oil pipe is used is subjected to the restriction of down-hole string situation bigger, generally need the tubing string bottom that the supporting joint that is located in is set, and it is also complicated often to throw in the technology of blanking plug downwards.In addition, because after the down-hole string long-term work, tubing string inner wall corrosion, fouling are serious, can have a strong impact on the sealing performance of blanking plug, the sealing life that blanking plug can reach is shorter, therefore usually spacing and special-purpose seal section need be set in the oil pipe bottom, otherwise general blanking plug is difficult to realize location and sealing reliably and with long-term.
Therefore prior art also lacks a kind of special-purpose seal section cooperation that do not need in oil pipe, promptly can reach the preferable tubing plug of permanently effective sealing effectiveness
The utility model content
The purpose of technical solutions of the utility model provides a kind of expansion self-sealing tubing plug, and the use of this tubing plug does not need in the oil pipe that special use is set and is located in joint and seal section, can reach sealing effectiveness long-term effectively.
For achieving the above object, the utility model provides a kind of expansion self-sealing tubing plug, comprising:
The core pipe;
The packing element that can expand is sheathed on the outside of described core pipe, and has a space that is used to hold reaction expansion chemical agent between described packing element and the described core pipe;
The packing component that is used to seal described space and described packing element is fixedlyed connected with described core pipe.
Preferably, above-mentioned described tubing plug, the tubular pipe structure that becomes inner hollow of described core, and offer first pod apertures that is communicated with described space on the inwall of described core pipe first end.
Preferably, above-mentioned described tubing plug offers second pod apertures that is in communication with the outside on the inwall of described core pipe second end; At the described second pod apertures place, be provided with a single current control valve that in predetermined pressure range, keeps balance in the hollow tube of described core pipe.
Preferably, above-mentioned described tubing plug, described packing component comprises:
First glue tube base at first end of described packing element, is sheathed in the first of described packing element excircle, fixedly connected with the excircle of described packing element, and described first glue tube base is also fixedlyed connected with described core pipe;
Second glue tube base at second end of described packing element, is sheathed on the second portion of described packing element excircle, fixedly connected with the excircle of described packing element, and described second glue tube base is also fixedlyed connected with described core pipe; The excircle of described packing element also has third part between described first and the described second portion.
Preferably, above-mentioned described tubing plug, described packing element comprises:
The first metal body;
The second metal body;
Glue tubulation body is fixedlyed connected with the described second metal body with the described first metal body respectively.
Preferably, above-mentioned described tubing plug, the described first metal body, the described second metal body and described glue tubulation body one are processed into.
At least one technical scheme in the above-mentioned tubing plug of the utility model specific embodiment has following beneficial effect:
By the reaction expansion medicament in the tubing plug packing element of tubing plug is expanded, and the sealing oil pipe, its seal form need not be provided with special use and be located in joint and seal section in oil pipe, therefore need not to worry tubing string inner wall corrosion, fouling, and influence the sealing performance problem of blanking plug, reach sealing effectiveness long-term effectively;
The single current control valve is set, the sealing load of control tubing plug, and can make excessive medicine play the auxiliary seal effect;
The use of tubing plug is directly rendered to it in oil pipe on ground and to be got final product, and construction technology is simple, can reduce construction operation difficulty and workload.
Description of drawings
Fig. 1 is the structural representation of the described tubing plug of the utility model specific embodiment.
The specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with the accompanying drawings and the specific embodiments the utility model is described in detail.
The described expansion self-sealing of the utility model specific embodiment tubing plug comprises:
The core pipe;
The packing element that can expand is sheathed on the outside of described core pipe, and has a space that is used to hold reaction expansion chemical agent between described packing element and the described core pipe;
The packing component that is used to seal described space and described packing element is fixedlyed connected with described core pipe.
Described tubing plug, can directly render to tubing plug in the oil pipe on ground, by the reaction expansion medicament in the tubing plug packing element of tubing plug is expanded, and the sealing oil pipe, therefore its seal form need not be provided with special use and be located in joint and seal section in oil pipe, can reach sealing effectiveness long-term effectively.
Fig. 1 is the structural representation of the described tubing plug of the utility model specific embodiment.Consult Fig. 1, described tubing plug comprises:
Core pipe 1 forms inside and has the hollow tube body structure;
The packing element 3 that can expand is sheathed on the outside of core pipe 1, and remains with a space 31 between packing element 3 and the core pipe 1, is used to hold the chemical agent that placement can be reacted expansion.
The object that this packing element 3 is well known to those skilled in the art as Fig. 1, includes:
The first metal body 32;
The second metal body 33;
Usually, this first metal body 32, the second metal body 33 and glue tubulation body 34 adopt one-body molded mode to make, and this processing technology has been the existing mature technology means, is not described in detail at this.
In the utility model specific embodiment, be used to the packing component that seals the space 31 of packing element 3 and packing element 3 is fixedlyed connected with core pipe 1,, include as Fig. 1:
First glue tube base 41 at first end of packing element 3, is sheathed in the first of packing element 3 excircles, also promptly entirely be sheathed on the part of the periphery of the first metal body 32 and glue tubulation body 34, and this first glue tube base 41 is also fixedlyed connected with core pipe 1; In the utility model specific embodiment, first glue tube base 41 respectively with the first metal body 32 and core pipe 1 to be threaded;
Second glue tube base 42 at second end of packing element 3, is sheathed on the second portion of packing element 3 excircles, also promptly entirely be sheathed on the part of the periphery of the second metal body 33 and glue tubulation body 34, and this second glue tube base 42 also is connected with core pipe 1; In the utility model specific embodiment, second glue tube base 42 and the second metal body 33 are fitted and connected with core pipe 1, and seal by sealing ring to be threaded.
Described tubing plug by the setting of first glue tube base 41 and second glue tube base 42, makes the space 31 of packing element 3 form seal cavity, will react the expansion chemical agent and be closed in wherein.
Excircle at packing element 3, comprise also that between first and second portion the third part that is encased by first glue tube base 41 and second glue tube base 42 not is when the reaction of the chemical agent in packing element 3 spaces 31 is expanded, this third part can expand outwardly, with the sealing oil pipe.
It will be understood by those skilled in the art that to make packing element 3 sealing, and the structure that links together of packing element 3 and core pipe 1 is not limited to adopt first glue tube base 41 and second glue tube base 42 of said structure, its realization should have various ways, describes in detail no longer one by one at this.
In addition, as Fig. 1, first end of core pipe 1 also has one first pod apertures 11, and this first pod apertures 11 is communicated with the space 31 of packing element 3; Second end of core pipe 2 has second pod apertures 12, and this second pod apertures is in communication with the outside, and at second pod apertures, 12 places, is provided with a single current control valve 5 that keeps balance in predetermined pressure range in the hollow tube of core pipe 1.
By the above-mentioned structure that is provided with, chemical agent in packing element 3 spaces 31 is also entered in the hollow tube of core pipe 1, and the space between the core pipe 1 and first glue tube base 41, when the tubing plug that the chemical agent that can react expansion is housed is put in the oil pipe, after closing oil pipe, under the effect of gravity, go downwards to the oil pipe bottom, behind the certain hour, be stored in core pipe 1, first glue tube base 41, packing element 3, when the chemical agent reaction between second glue tube base 42 is expanded, under the effect of expansion force, packing element 3 outside Expansion sealings are lived oil pipe, when chemicals continues to expand, when internal pressure can keep the predetermined pressure of balance greater than single current control valve 5, medicine is excessive by second pod apertures 12, is sealed in around the tubing plug, can also play the auxiliary seal effect.
In addition, tubing plug comprises that also one salvages anchor 6, salvages second end that anchor 6 is provided with core pipe 1.Wherein, this salvaging anchor 6 plays the grappling effect, and those skilled in the art should all can understand its form of structure, no longer salvaging anchor 6 structures of tubing plug described in the utility model is described in detail at this.
More than comprehensive, the described expansion self-sealing of the utility model specific embodiment tubing plug has following beneficial effect:
The use of tubing plug is directly rendered to it in oil pipe on ground and to be got final product, and construction technology is simple, can reduce construction operation difficulty and workload;
The expanding packing element expands by chemicals, can combine good sealing effect with tube inner wall is fine;
By the reaction of the expansion medicament in the tubing plug packing element of tubing plug is expanded, and the sealing oil pipe, its seal form need not be provided with special use and be located in joint and seal section in oil pipe, therefore need not to worry tubing string inner wall corrosion, fouling, and influence the sealing performance problem of blanking plug, reach sealing effectiveness long-term effectively;
The single current control valve is set, the sealing load of control tubing plug, and can make excessive medicine play the auxiliary seal effect.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. an expansion self-sealing tubing plug is characterized in that, comprising:
The core pipe;
The packing element that can expand is sheathed on the outside of described core pipe, and has a space that is used to hold reaction expansion chemical agent between described packing element and the described core pipe;
The packing component that is used to seal described space and described packing element is fixedlyed connected with described core pipe.
2. tubing plug as claimed in claim 1 is characterized in that, the tubular pipe structure that becomes inner hollow of described core, and offer first pod apertures that is communicated with described space on the inwall of described core pipe first end.
3. tubing plug as claimed in claim 2 is characterized in that, offers second pod apertures that is in communication with the outside on the inwall of described core pipe second end; At the described second pod apertures place, be provided with a single current control valve that in predetermined pressure range, keeps balance in the hollow tube of described core pipe.
4. tubing plug as claimed in claim 1 is characterized in that, described packing component comprises:
First glue tube base at first end of described packing element, is sheathed in the first of described packing element excircle, fixedly connected with the excircle of described packing element, and described first glue tube base is also fixedlyed connected with described core pipe;
Second glue tube base at second end of described packing element, is sheathed on the second portion of described packing element excircle, fixedly connected with the excircle of described packing element, and described second glue tube base is also fixedlyed connected with described core pipe; The excircle of described packing element also has third part between described first and the described second portion.
5. tubing plug as claimed in claim 1 is characterized in that, described packing element comprises:
The first metal body;
The second metal body;
Glue tubulation body is fixedlyed connected with the described second metal body with the described first metal body respectively.
6. tubing plug as claimed in claim 5 is characterized in that, the described first metal body, the described second metal body and described glue tubulation body one are processed into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202914194U CN201756940U (en) | 2010-08-13 | 2010-08-13 | Expansion self-sealing tubing stopper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202914194U CN201756940U (en) | 2010-08-13 | 2010-08-13 | Expansion self-sealing tubing stopper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201756940U true CN201756940U (en) | 2011-03-09 |
Family
ID=43644212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202914194U Expired - Lifetime CN201756940U (en) | 2010-08-13 | 2010-08-13 | Expansion self-sealing tubing stopper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201756940U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863538A (en) * | 2014-02-21 | 2015-08-26 | 任丘市博鑫石油机械制造有限公司 | Setting blowout preventer device with pressed plug |
| CN111827919A (en) * | 2020-07-23 | 2020-10-27 | 大庆长垣能源科技有限公司 | Gas channeling prevention metal sealing open hole packer |
-
2010
- 2010-08-13 CN CN2010202914194U patent/CN201756940U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863538A (en) * | 2014-02-21 | 2015-08-26 | 任丘市博鑫石油机械制造有限公司 | Setting blowout preventer device with pressed plug |
| CN111827919A (en) * | 2020-07-23 | 2020-10-27 | 大庆长垣能源科技有限公司 | Gas channeling prevention metal sealing open hole packer |
| CN111827919B (en) * | 2020-07-23 | 2021-03-30 | 大庆长垣能源科技有限公司 | Gas channeling prevention metal sealing open hole packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TOP-WELL PETROLEUM TECHNOLOGIES COMPANY LTD. Free format text: FORMER OWNER: BEIJING TOP-WELL PETROLEUM TECHNOLOGIES SERVICE COMPANY LTD. Effective date: 20121114 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121114 Address after: 100012, room 32, security building, 2101 Beiyuan Road, Beijing, Chaoyang District Patentee after: Top-Well Petroleum Technologies Company Ltd. Address before: 100012, room 32, security building, 2101 Beiyuan Road, Beijing, Chaoyang District Patentee before: Top Well Services Inc. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110309 |