CN205778779U - The eccentric injection mandrel of pressure opened by a kind of band - Google Patents
The eccentric injection mandrel of pressure opened by a kind of band Download PDFInfo
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- CN205778779U CN205778779U CN201620290196.7U CN201620290196U CN205778779U CN 205778779 U CN205778779 U CN 205778779U CN 201620290196 U CN201620290196 U CN 201620290196U CN 205778779 U CN205778779 U CN 205778779U
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- pressure
- central canal
- band
- injection mandrel
- overcoat
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Abstract
The utility model discloses a kind of band and open the eccentric injection mandrel of pressure, it is characterized in that: include the top connection being sequentially connected from top to bottom, upper overcoat, seating nipple main body, lower overcoat, lower contact, the upper end of described seating nipple main body connects centralizer body, lower end connects central canal, it is placed on overcoat in described centralizer body, lower overcoat it is placed in described central canal, unlatching pressure mechanism it is arranged with outside central canal, described unlatching pressure mechanism arranges with lower contact inner wall sealing, radially inlet opening it is provided with in the lower end of central canal, described inlet opening is positioned at the lower section opening pressure mechanism.This utility model band is opened the eccentric injection mandrel of pressure and is coordinated with inflatable packer in commingled water injection or separate water injection well, it can be ensured that inflatable packer, at certain chock pressure difference lower seal, improves water injection string in high pressure, the effect duration of supertension water filling.
Description
Technical field
This utility model belongs to oil, natural gas extraction technical field, relates to the eccentric injection mandrel used by matched special purpose tools in water injection string, opens the eccentric injection mandrel of pressure particularly to a kind of band.
Background technology
One of water filling most effective means being to maintain stratum energy, use compression packer and injection well downhole flow regulator to carry out cage note or dispensing operation in conventional well measure.Increase along with the water filling time limit, casing corrosion is more and more heavier, the effect duration of compression packer is shorter and shorter, especially in high pressure, supertension water filling, open several days oil jacket pressure balanceds of note, compression packer this kind of well adaptability worse and worse, and inflatable packer flare factor is big, seal effective segment length, acid fracturing well is used widely, study a kind of band for this and open eccentric injection mandrel and the inflatable packer use of pressure, keep certain chock pressure difference, provide safeguard for packer long-term seal.
Utility model content
Technical problem to be solved in the utility model is that a kind of energy of deficiency offer existed for above-mentioned prior art keeps certain chock pressure difference, for the eccentric injection mandrel of the band unlatching pressure that packer long-term seal provides safeguard.
The technical scheme that this utility model is used is: the eccentric injection mandrel of pressure opened by a kind of band, it is characterized in that: include the top connection being sequentially connected from top to bottom, upper overcoat, seating nipple main body, lower overcoat, lower contact, the upper end of described seating nipple main body connects centralizer body, lower end connects central canal, it is placed on overcoat in described centralizer body, lower overcoat it is placed in described central canal, unlatching pressure mechanism it is arranged with outside central canal, described unlatching pressure mechanism arranges with lower contact inner wall sealing, radially inlet opening it is provided with in the lower end of central canal, described inlet opening is positioned at the lower section opening pressure mechanism.
By technique scheme, described unlatching pressure mechanism includes spring, cone, sealing member, it is provided with outward flange in the upper end of central canal, described spring is installed between the outward flange of central canal and cone, described cone can be along central canal axial slip under the promotion setting pressure, being provided with annular space between cone and lower overcoat, described annular space is connected with the eccentric orfice in seating nipple main body, constitutes fluid course；Described sealing member arranges mutually with lower contact inwall.
By technique scheme, described sealing member includes that rectangular seal and rectangular seal baffle ring, described rectangular seal baffle ring are threadeded with the lower end of cone.
By technique scheme, the middle part of described cone is the conical surface, and its internal conical surface arranged with lower contact upper end arranges mutually.
By technique scheme, being provided with limited step in the upper end of described central canal, this limited step internal diameter is up big and down small.
By technique scheme, the eccentric orfice in seating nipple main body is provided with position-limit mechanism, for carrying out spacing to blanking plug.
By technique scheme, described centralizer body is provided with guiding mechanism, delivers for throw in catcher or salvages the blanking plug in eccentric injection mandrel.
By technique scheme, described inlet opening is kidney ellipsoid hole.
On the premise of understanding layer position water absorbing capacity, in the blanking plug of eccentric injection mandrels at different levels, place correspondingly sized water nozzle, and be shipped in the eccentric orfice of eccentric injection mandrel, be lowered in well with amplificate packer.During construction, hydraulic pressure promotes cone through eccentric injection mandrel inlet opening, and cone compresses spring also exposes fluid course, stratum is flowed to by the blanking plug water nozzle of eccentric injection mandrel, owing to throttling action produces chock pressure difference, make inflatable packer tympanites set, seal oil sets annular space.
Acquired by this utility model have the beneficial effect that 1, this utility model band is opened the eccentric injection mandrel of pressure and is coordinated with inflatable packer in commingled water injection or separate water injection well, can ensure that inflatable packer is at certain chock pressure difference lower seal, improve water injection string in high pressure, the effect duration of supertension water filling, meet high pressure, the demand of supertension water injection well.2, inflatable packer seals effective segment length, and flare factor is big, is suitable for set and damages casing deformation well, and hydraulic setting, and pressure release unseals, safe and reliable.
Accompanying drawing explanation
Fig. 1 is structure chart of the present utility model.
In figure: 1, top connection, 2,8,11,12, sealing ring, 3, centralizer body, 4, upper overcoat, 5, hexagon-headed bolt, 6, seating nipple main body, 7, lower overcoat, 9, central canal, 10, spring, 11, cone, 12, rectangular seal, 13, rectangular seal baffle ring, 14, lower contact.
Detailed description of the invention
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in the figure, present embodiments provide a kind of band and open the eccentric injection mandrel of pressure, including the top connection 1 being sequentially connected from top to bottom, upper overcoat 4, seating nipple main body 6, lower overcoat 7, lower contact 14, the upper end of described seating nipple main body 6 connects centralizer body 3 by hexagon-headed bolt 5, lower end connects central canal 9, is provided with limited step in the upper end of described central canal, and this limited step internal diameter is up big and down small, central canal 9 and seating nipple main body 6 are spacing by limited step, and are sealed by sealing ring 8.It is placed on overcoat 4 in described centralizer body 3, lower overcoat 7 it is placed in described central canal 9, unlatching pressure mechanism it is arranged with outside central canal 9, described unlatching pressure mechanism arranges with lower contact inner wall sealing, be provided with the radial direction inlet opening of oval shape in the lower end of central canal, described inlet opening is positioned at the lower section opening pressure mechanism.
In the present embodiment, described unlatching pressure mechanism includes spring 10, cone 11, sealing member, it is provided with outward flange in the upper end of central canal 9, described spring 10 is installed between the outward flange of central canal 9 and cone 11, described cone 11 can be along central canal 9 axial slip under the promotion setting pressure, being provided with annular space between cone 11 and lower overcoat 7, described annular space is connected with the eccentric orfice in seating nipple main body, constitutes fluid course.Described sealing member arranges mutually with lower contact inwall.Described sealing member includes that rectangular seal 12 and rectangular seal baffle ring 13, described rectangular seal baffle ring 13 are threadeded with the lower end of cone 11.
In the present embodiment, the middle part of described cone 11 is the conical surface, and its internal conical surface arranged with lower contact 14 upper end arranges mutually.
In the present embodiment, the eccentric orfice of seating nipple main body 6 is provided with position-limit mechanism, for carrying out spacing to blanking plug.
In the present embodiment, described centralizer body 3 is provided with guiding mechanism, delivers for throw in catcher or salvages the blanking plug in eccentric injection mandrel.
In the present embodiment, the two ends of upper overcoat 4 are tightly connected with top connection 1 and seating nipple main body 6 by sealing ring 2 respectively, and the two ends of lower overcoat 7 are tightly connected with seating nipple main body 6 and lower contact by sealing ring respectively.
On the premise of understanding layer position water absorbing capacity, in the blanking plug of eccentric injection mandrels at different levels, place correspondingly sized water nozzle, and be shipped in eccentric injection mandrel, be lowered in well with amplificate packer.During construction, hydraulic pressure promotes unlatching pressure mechanism through the inlet opening of eccentric injection mandrel central canal 9, unlatching pressure mechanism is up loses sealing with lower contact 14, cone compresses spring 10 also exposes fluid course, flows to stratum by the blanking plug water nozzle of eccentric injection mandrel, owing to throttling action produces chock pressure difference, inflatable packer tympanites is made to set, seal oil sets annular space, provide guarantee for packer long-term seal, improve water injection string in high pressure, the effect duration of supertension water filling.
Claims (8)
1. the eccentric injection mandrel of a band unlatching pressure, it is characterized in that: include the top connection being sequentially connected from top to bottom, upper overcoat, seating nipple main body, lower overcoat, lower contact, the upper end of described seating nipple main body connects centralizer body, lower end connects central canal, it is placed on overcoat in described centralizer body, lower overcoat it is placed in described central canal, unlatching pressure mechanism it is arranged with outside central canal, described unlatching pressure mechanism arranges with lower contact inner wall sealing, be provided with radially inlet opening in the lower end of central canal, described inlet opening is positioned at the lower section opening pressure mechanism.
The eccentric injection mandrel of pressure opened by a kind of band the most according to claim 1, it is characterized in that, described unlatching pressure mechanism includes spring, cone, sealing member, it is provided with outward flange in the upper end of central canal, described spring is installed between the outward flange of central canal and cone, described cone can be along central canal axial slip under the promotion setting pressure, it is provided with annular space between cone and lower overcoat, described annular space is connected with the eccentric orfice in seating nipple main body, constituting fluid course, described sealing member arranges mutually with lower contact inwall.
The eccentric injection mandrel of pressure opened by a kind of band the most according to claim 2, it is characterised in that described sealing member includes that rectangular seal and rectangular seal baffle ring, described rectangular seal baffle ring are threadeded with the lower end of cone.
4. opening the eccentric injection mandrel of pressure according to a kind of band described in Claims 2 or 3, it is characterised in that the middle part of described cone is the conical surface, its internal conical surface arranged with lower contact upper end arranges mutually.
5. open the eccentric injection mandrel of pressure according to a kind of band described in Claims 2 or 3, it is characterised in that being provided with limited step in the upper end of described central canal, this limited step internal diameter is up big and down small.
The eccentric injection mandrel of pressure opened by a kind of band the most according to claim 1 and 2, it is characterised in that be provided with position-limit mechanism on the eccentric orfice in seating nipple main body, for carrying out spacing to blanking plug.
The eccentric injection mandrel of pressure opened by a kind of band the most according to claim 1 and 2, it is characterised in that described centralizer body is provided with guiding mechanism, delivers for throw in catcher or salvages the blanking plug in eccentric injection mandrel.
The eccentric injection mandrel of pressure opened by a kind of band the most according to claim 1 and 2, it is characterised in that described inlet opening is kidney ellipsoid hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620290196.7U CN205778779U (en) | 2016-04-08 | 2016-04-08 | The eccentric injection mandrel of pressure opened by a kind of band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620290196.7U CN205778779U (en) | 2016-04-08 | 2016-04-08 | The eccentric injection mandrel of pressure opened by a kind of band |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205778779U true CN205778779U (en) | 2016-12-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620290196.7U Active CN205778779U (en) | 2016-04-08 | 2016-04-08 | The eccentric injection mandrel of pressure opened by a kind of band |
Country Status (1)
| Country | Link |
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| CN (1) | CN205778779U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106939784A (en) * | 2017-01-13 | 2017-07-11 | 上海全泽能源科技有限公司 | The positioning acidizing device of stratified injection well |
| CN111472759A (en) * | 2020-06-02 | 2020-07-31 | 东营市创世石油测试新技术开发有限责任公司 | High-pressure dynamic sealing device for output shaft of water injection well measuring and adjusting instrument |
-
2016
- 2016-04-08 CN CN201620290196.7U patent/CN205778779U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106939784A (en) * | 2017-01-13 | 2017-07-11 | 上海全泽能源科技有限公司 | The positioning acidizing device of stratified injection well |
| CN111472759A (en) * | 2020-06-02 | 2020-07-31 | 东营市创世石油测试新技术开发有限责任公司 | High-pressure dynamic sealing device for output shaft of water injection well measuring and adjusting instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191231 Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Co-patentee after: PETROLEUM ENGINEERING TECHNOLOGY RESEARCH INSTITUTE, JIANGHAN OILFIELD BRANCH OF CHINA PETROCHEMICAL CORPORATION Patentee after: China Petrochemical Co., Ltd. Address before: 430035 Hubei city of Wuhan province Gutian two Road No. 37 HSBC Nanniwan Avenue headquarters block fifth B Patentee before: PETROLEUM ENGINEERING TECHNOLOGY RESEARCH INSTITUTE, JIANGHAN OILFIELD BRANCH OF CHINA PETROCHEMICAL CORPORATION |
|
| TR01 | Transfer of patent right |