CN205012957U - Sealed hanger - Google Patents
Sealed hanger Download PDFInfo
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- CN205012957U CN205012957U CN201520803436.4U CN201520803436U CN205012957U CN 205012957 U CN205012957 U CN 205012957U CN 201520803436 U CN201520803436 U CN 201520803436U CN 205012957 U CN205012957 U CN 205012957U
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Abstract
The utility model provides a sealed hanger, including body (2), core pipe (4), (1), seal assembly (3) and lower (5) are sealed to the seat of honour that top -down set gradually between body (2) and core pipe (4) to and the locking is in core pipe (4) and lower sealing washer (6) of sealing the annular space between (5). The utility model discloses a sealed hanger has the advantage of traditional circular bead formula hanger and water -stop concurrently, and has improved intensity, temperature toleration and the leakproofness of hanger.
Description
Technical field
The utility model relates to geology field, particularly a kind of sealed hanger for geothermal well.
Background technology
When existing geothermal well becomes well, the connected mode between production casing and last layer sleeve pipe is divided into usually wears sleeve formula and suspension type two kinds.Wear the connection of sleeve formula to be sealed by squeeze method, suspension type connects use shoulder type hanger and connects.For increasing sealing, generally also between two-layer sleeve pipe, set up water-stop.
Wear sleeve formula sleeve pipe when squeeze method is constructed, easily occur that annular space shutoff is not tight, shallow-layer cold water scurries into the situation that pit shaft causes well temperature sharply to decline.If repeatedly squeeze method also cannot shutoff cold water, geothermal well can be made to reach instructions for use, even scrap.
Shoulder type hanger is hung by body and pipe string and is formed, both contact positions be ramped shaped shoulder, and body is connected to that higher level's sleeve pipe is third from the bottom, enter down in advance between the 4th sleeve pipe, enters under pipe string extension is connected to secondary bunch tube top, bunch tube is hung to be sitting on body, realizes two-stage sleeve pipe and connects.In work progress, being made a trip scratches or drilling rod eccentric wear etc. affects, and easily makes body slope shoulder abrasion deformation, cause pipe string to hang to sit hang after poorly sealed.Forbidden as controlled during surface casing cementing, in sleeve pipe, cement surface is easily higher than hanger body, can bring harmful effect to the follow-up sealing of hanging of sitting.
Utility model content
The purpose of this utility model is the problem overcoming the temperature decline that geothermal well causes because top layer cold water scurries into, and the advantage of conventional table shoulder hanger and water-stop is united two into one, provides a kind of comprehensive sealed hanger for geothermal well.
Solution of the present utility model is:
A kind of sealed hanger, comprises body, core pipe, is successively set on upper setting, black box between described body and core pipe and lower setting from top to bottom, and be locked in described core pipe and described lower setting between annular space in sealing ring.
Preferably, described setting top slopes inwardly, and forms ramped shaped shoulder.
Preferably, described black box comprises many group annular seal components.
Preferably, the section of described annular seal component is rectangle.
Preferably, described black box comprises the annular seal component of 4 groups of mounted on top.
Preferably, described black box comprises the rectangular cross section rubber ring of 4 groups of mounted on top.
Preferably, described sealed hanger also comprises the locking nut being arranged at described lower setting below, and described core pipe is setting relative fixing with lower.
Preferably, described sealed hanger also comprises the body resistance-strengthening tablets be arranged between described sealing ring and described locking nut, and described body resistance-strengthening tablets is fixed by described locking nut.
Preferably, described lower setting and bottom that is body is provided with step-like structure, between described lower setting and body, described lower setting step-like structure place adhesion metal seal.
The advantage of sealed hanger of the present utility model is the function having conventional table shoulder hanger and water-stop concurrently, and improves the intensity of hanger, temperature tolerance and sealing.
Accompanying drawing explanation
In conjunction with the drawings the utility model illustrative embodiments is described in more detail, above-mentioned and other object of the present utility model, Characteristics and advantages will become more obvious, wherein, in the utility model illustrative embodiments, identical reference number represents same parts usually.
Fig. 1 is the sectional view of the sealed hanger according to exemplary embodiment.
Main Reference Numerals is as follows:
1-is upper setting, 2-body, 3-black box, 4-core pipe, setting under 5-, 6-sealing ring, 7-body resistance-strengthening tablets, 8-locking nut, 9-metal seal.
Detailed description of the invention
Below with reference to accompanying drawings preferred embodiment of the present utility model is described in more detail.Although show preferred embodiment of the present utility model in accompanying drawing, but should be appreciated that, but realize the utility model in a variety of manners and not should limit by the embodiment of setting forth here.On the contrary, provide these embodiments to be to make the utility model more thorough and complete, and scope of the present utility model intactly can be conveyed to those skilled in the art.
The utility model provides a kind of sealed hanger, comprises body, core pipe, is successively set on upper setting, black box between body and core pipe and lower setting from top to bottom, and be locked in core pipe and lower setting between annular space in sealing ring.Upper setting top can slope inwardly, and forms ramped shaped shoulder, hangs with stay pipe string.In order to obtain better sealing effectiveness, black box can comprise many group annular seal components, and the section of annular seal component is rectangle.Comparatively preferably, black box comprises the annular seal component of 4 groups of mounted on top.More preferably, black box comprises the rectangular cross section rubber ring of 4 groups of mounted on top.
Sealed hanger also can comprise the locking nut being arranged at lower setting below, and core pipe is setting relative fixing with lower.
Sealed hanger also can comprise the body resistance-strengthening tablets be arranged between sealing ring and locking nut, and body resistance-strengthening tablets is fixed by locking nut, and for the parts such as the sealing ring on top, black box are limited in core pipe, peventing member activity departs from.
Lower setting and bottom that is body all can be provided with step-like structure, and between lower setting and body, lower setting step-like structure place adheres to the metal seal be made up of soft metal, to fill the gap between lower setting and body, seals further.
Fig. 1 is the sectional view of the sealed hanger according to exemplary embodiment.As shown in Figure 1, sealed hanger comprises core pipe 4 and body 2, and is successively set on upper setting 1, the black box 3 and lower setting 5 between core pipe 4 and body 2 from top to bottom.The top of upper setting 1, preferably to tilted, form ramped shaped shoulder, enters under being convenient to logger, workover tool.Black box 3 preferably includes many group annular seal components, for the annular space between packing core pipe 4 and body 2.Be expand the advantage that black box 3 divides into groups after black box 3 pressurized, often group can play plugging effect separately, does not more divide into groups to occur that the possibility lost efficacy is less.The material of annular seal component can be such as rubber elastomeric material, and its section can be rectangle, and group number can be selected arbitrarily as required.Such as, the rectangular cross section rubber ring of four groups of mounted on top can be selected, can sealing effectiveness be ensured like this, be beneficial to assembling again.
Sealed hanger also comprises the sealing ring 6 in the annular space that is locked between core pipe 4 and lower setting 5, and sealing ring 6 is preferably made up of rubber, for the gap between packing hanger body 2 and core pipe 4.
Sealed hanger also can comprise the locking nut 8 be arranged at below lower setting 5, for fixing relative to core pipe 4 lower setting 5.Sealed hanger also can comprise the body resistance-strengthening tablets 7 be arranged between sealing ring 6 and locking nut 8, and it is preferably made of metal.After fixing body resistance-strengthening tablets 7 by locking nut 8, the parts such as the sealing ring 6 on top, black box 3 can be limited on core pipe 4 by body resistance-strengthening tablets 7, and peventing member activity departs from.
In the preferred case, lower setting 5 and the equal setting table stepped structure in bottom of body 2, between lower setting 5 and body 2, the step-like structure place of lower setting 5 adheres to the metal seal 9 be made up of soft metal.When core pipe 4 is subject to bottom pulling force, lower setting 5 contact with the step bottom body 2, and extrude the metal seal 9 be made up of soft metal, metal seal 9 is filled in the effect playing sealing in both gaps.
During use, pipe string is placed on the ramped shaped shoulder of setting 1, the core pipe 4 of splicing sleeve string and upper setting 1 descending under gravity, and crush seal assembly 3 makes it thicker, realize the sealing to the annular space between core pipe 4 and body 2, effectively prevent scurrying into of shallow-layer cold water.Under pressure, there is elastic deformation in sealing ring 6, thus form contact on the contact surface of sealing ring 6.When this contact be greater than press in sealed medium time, then can not leak.
Sealed hanger of the present utility model has the advantage of conventional table shoulder hanger and water-stop concurrently, substantially increases the intensity of hanger, temperature tolerance and sealing, effectively improves the temperature decline problem that geothermal well causes because top layer cold water seals in.
Be described above embodiment of the present utility model, above-mentioned explanation is exemplary, and non-exclusive, and is also not limited to disclosed respectively execute example.When not departing from the scope and spirit of illustrated embodiment, many modifications and changes are all apparent for those skilled in the art.The selection of term used herein, is intended to principle and the practical application of explaining embodiment best, or makes other those of ordinary skill of the art understand the embodiment disclosed herein.
Claims (9)
1. a sealed hanger, it is characterized in that, comprise body (2), core pipe (4), be successively set on upper setting (1) between described body (2) and core pipe (4), black box (3) and lower setting (5) from top to bottom, and be locked in the sealing ring (6) in the annular space between described core pipe (4) and described lower setting (5).
2. sealed hanger according to claim 1, is characterized in that, the top of described setting (1) slopes inwardly, and forms ramped shaped shoulder.
3. sealed hanger according to claim 1, is characterized in that, described black box (3) comprises many group annular seal components.
4. sealed hanger according to claim 3, is characterized in that, the section of described annular seal component is rectangle.
5. the sealed hanger according to claim 3 or 4, is characterized in that, described black box (3) comprises the annular seal component of 4 groups of mounted on top.
6. sealed hanger according to claim 3, is characterized in that, described black box (3) comprises the rectangular cross section rubber ring of 4 groups of mounted on top.
7. sealed hanger according to claim 1, is characterized in that, also comprises the locking nut (8) being arranged at described lower setting (5) below, by relative fixing for described core pipe (4) setting with lower (5).
8. sealed hanger according to claim 7, it is characterized in that, also comprise the body resistance-strengthening tablets (7) be arranged between described sealing ring (6) and described locking nut (8), described body resistance-strengthening tablets (7) is fixed by described locking nut (8).
9. sealed hanger according to claim 1, it is characterized in that, the bottom of described lower setting (5) and body (2) is provided with step-like structure, between described lower setting (5) and body (2), step-like structure place adhesion metal seal (9) of described lower setting (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520803436.4U CN205012957U (en) | 2015-10-16 | 2015-10-16 | Sealed hanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520803436.4U CN205012957U (en) | 2015-10-16 | 2015-10-16 | Sealed hanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205012957U true CN205012957U (en) | 2016-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520803436.4U Active CN205012957U (en) | 2015-10-16 | 2015-10-16 | Sealed hanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205012957U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111287686A (en) * | 2020-03-13 | 2020-06-16 | 中石化绿源地热能(陕西)开发有限公司 | Double-seal setting device and hanger |
-
2015
- 2015-10-16 CN CN201520803436.4U patent/CN205012957U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111287686A (en) * | 2020-03-13 | 2020-06-16 | 中石化绿源地热能(陕西)开发有限公司 | Double-seal setting device and hanger |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |