CN214303741U - Well washing device - Google Patents
Well washing device Download PDFInfo
- Publication number
- CN214303741U CN214303741U CN202022891214.6U CN202022891214U CN214303741U CN 214303741 U CN214303741 U CN 214303741U CN 202022891214 U CN202022891214 U CN 202022891214U CN 214303741 U CN214303741 U CN 214303741U
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- channel
- well
- tubular body
- metal valve
- joint
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- 238000005406 washing Methods 0.000 title claims abstract description 43
- 239000002184 metal Substances 0.000 claims abstract description 62
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 238000002347 injection Methods 0.000 claims description 55
- 239000007924 injection Substances 0.000 claims description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 51
- 238000011010 flushing procedure Methods 0.000 claims description 43
- 238000007789 sealing Methods 0.000 claims description 32
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 10
- 230000007774 longterm Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000009699 differential effect Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000002332 oil field water Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses a well washing device belongs to the petrochemical field. In the well washing device, the lower end of an upper joint is connected with the upper end of a tubular body, and the lower end of the tubular body is connected with the upper end of a lower joint; the side part of the tubular body is provided with a first channel extending along the axial direction, the inner wall of the tubular body is provided with a through hole, and the two ends of the through hole are respectively communicated with the first channel and the inner cavity of the tubular body; the elastic piece, the metal valve ball and the metal valve seat are sequentially contacted along the direction from top to bottom to form a channel adjusting mechanism, and the metal valve seat is positioned at the downstream of the through hole; the locking column is provided with a second channel extending along the axial direction, the locking column is fixed in the first channel, and the locking column is used for limiting the channel adjusting mechanism in the first channel. The acting force direction of the elastic piece is perpendicular to the metal valve ball, deformation caused by long-term impact of liquid is avoided, the effectiveness of the well washing device is kept for a long time, and the assembly difficulty of the well washing device is simplified.
Description
Technical Field
The utility model relates to a petrochemical field, in particular to well washing device.
Background
In the oil field water injection process, through using the water injection tubular column including oil pipe, separator and water injection mandrel, this kind of water injection tubular column is at long-term water injection, perhaps when stopping annotating temporarily, and pollutants such as sand setting, incrustation scale easily appear in the water injection well, if not in time wash the well, lead to above-mentioned water injection tubular column to be blockked up the risk easily, be unfavorable for going on smoothly of water injection operation. Therefore, it is common to connect a well-flushing device in the injection string and run the well-flushing device down the section of the injection well that requires a well-flushing.
The related art provides a well washing device, which includes: the ball valve comprises a tubular main body and a ball valve connected with the inner wall of the main body through an elastic component, wherein the main body comprises a first channel and a second channel which are axially arranged and mutually communicated, and a first valve seat matched with the ball valve is arranged at the joint of the first channel and the second channel; the side wall of the main body is provided with a third channel communicated with the first channel and the outside of the side wall of the main body, a second valve seat matched with the ball valve is formed at the joint of the third channel and the first channel, an elastic component is obliquely arranged above the second valve seat, and the elastic component is connected with the ball valve.
In the process of implementing the present invention, the inventor finds that there are at least the following problems in the prior art:
in the well washing device that relevant art provided, the elastic component slope sets up, has not only increased the assembly degree of difficulty, and easy deformation under the long-term impact of liquid for well washing device is inefficacy.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a well washing device can solve the technical problem that well washing device became invalid easily among the correlation technique.
Specifically, the method comprises the following technical scheme:
the utility model provides a well washing device, well washing device includes: the device comprises a tubular body, an upper joint, a lower joint, an elastic piece, a metal valve ball, a metal valve seat and a locking column;
the lower end of the upper joint is connected with the upper end of the tubular body, and the upper end of the upper joint is used for being connected with a water injection tubular column;
the lower end of the tubular body is connected with the upper end of the lower joint, and the lower end of the lower joint is used for being connected with a water injection tubular column;
the side part of the tubular body is provided with a first channel extending along the axial direction, the inner wall of the tubular body is provided with a through hole, and two ends of the through hole are respectively communicated with the first channel and the inner cavity of the tubular body;
the elastic piece, the metal valve ball and the metal valve seat are sequentially contacted along the direction from top to bottom to form a channel adjusting mechanism, and the metal valve seat is positioned at the downstream of the through hole;
the locking column is provided with a second channel extending along the axial direction, the locking column is fixed in the first channel, and the locking column is used for limiting the channel adjusting mechanism in the first channel.
In some possible implementations, the tubular body includes: the well washing device comprises a main body section, two joint sections and a well washing channel section;
the two joint sections are respectively connected with two ends of the main body section, the side wall of the main body section is provided with the through hole, and the through hole is communicated with the inner cavity of the main body section;
the well-flushing channel section is connected with the outer side wall of the main body section, the first channel is located in the well-flushing channel section along the axial direction, and the first channel penetrates through the lower end of the well-flushing channel section.
In some possible implementations, the main body section, the two joint sections, and the well-flushing channel section are connected by integral molding.
In some possible implementations, the resilient member is a compression spring.
In some possible implementations, the elastic member and the metal valve ball are connected by welding or bonding.
In some possible implementations, a first sealing groove is disposed on an outer side wall of the metal valve seat, and a first sealing ring is disposed in the first sealing groove and used for sealing a gap between the metal valve seat and the first channel.
In some possible implementations, the locking post is threadably connected with the first channel.
In some possible implementation manners, a second sealing groove is formed in the outer side wall of the locking column, a second sealing ring is arranged in the second sealing groove, and the second sealing ring is used for sealing a gap between the locking column and the first channel.
In some possible implementations, a lower end of the upper sub is threadably connected to an upper end of the tubular body, and an upper end of the upper sub is configured to be threadably connected to a water injection string.
In some possible implementations, the lower end of the tubular body is threadedly connected to the upper end of the lower sub, and the lower end of the lower sub is configured to threadedly connect to a water injection string.
The embodiment of the utility model provides a technical scheme's beneficial effect includes at least:
the embodiment of the utility model provides a well washing device, the passageway adjustment mechanism through making elastic component, metal valve ball, metal disk seat constitute is located the first passageway that tubulose body lateral part was seted up to lock through the locking post. Through being located the passageway with passageway adjustment mechanism and adjusting the position of metal valve ball based on the pressure differential effect between water injection tubular column internal pressure and the pit shaft internal pressure, and then utilize this passageway adjustment mechanism to open or the shutoff passageway between first passageway and the via hole, and then make the water injection tubular column can switch between water injection operation and well-flushing operation. Because elastic component, metal valve ball, metal disk seat contact in proper order along top-down's direction, namely, the axial direction of three is unanimous for the effort direction perpendicular to metal valve ball of elastic component has avoided the long-term impact of liquid to take place to warp, does benefit to the validity that keeps well-flushing device for a long time, and, has still simplified the assembly degree of difficulty of well-flushing device.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a well washing device provided by an embodiment of the present invention in a water injection state;
fig. 2 is a schematic structural diagram of a well washing device provided by an embodiment of the present invention in a well washing state;
fig. 3 is a schematic structural diagram of a tubular body according to an embodiment of the present invention.
The reference numerals denote:
1-a tubular body, 11-a first channel, 12-a via,
2-the upper end of the joint is connected with the lower end of the joint,
3-a lower joint, wherein the lower joint is provided with a lower joint,
4-the elastic piece is arranged on the upper surface of the shell,
5-a metal valve ball, wherein,
6-a metal valve seat, wherein,
7-locking post, 71-second channel,
8-a first sealing ring, wherein the first sealing ring is arranged on the first sealing ring,
9-a second sealing ring, wherein the second sealing ring is arranged on the second sealing ring,
101-main body section, 102-joint section and 103-well-flushing channel section.
Detailed Description
In order to make the technical solutions and advantages of the present invention clearer, the following will describe the embodiments of the present invention in further detail with reference to the accompanying drawings.
In the oil field water injection process, through using the water injection tubular column including oil pipe, separator and water injection mandrel, this kind of water injection tubular column is at long-term water injection, perhaps when stopping annotating temporarily, and pollutants such as sand setting, incrustation scale easily appear in the water injection well, if not in time wash the well, lead to above-mentioned water injection tubular column to be blockked up the risk easily, be unfavorable for going on smoothly of water injection operation. Therefore, it is common to connect a well-flushing device in the injection string and run the well-flushing device down the section of the injection well that requires a well-flushing.
The related art provides a well washing device, which includes: the ball valve comprises a tubular main body and a ball valve connected with the inner wall of the main body through an elastic component, wherein the main body comprises a first channel and a second channel which are axially arranged and mutually communicated, and a first valve seat matched with the ball valve is arranged at the joint of the first channel and the second channel; the side wall of the main body is provided with a third channel communicated with the first channel and the outside of the side wall of the main body, a second valve seat matched with the ball valve is formed at the joint of the third channel and the first channel, an elastic component is obliquely arranged above the second valve seat, and the elastic component is connected with the ball valve.
However, in the well washing device, the elastic component is obliquely arranged, so that the assembly difficulty is increased, and the well washing device is easy to deform under the long-term impact of liquid, so that the well washing device fails.
The embodiment of the utility model provides a well washing device, as shown in figure 1 or figure 2, this well washing device includes: the pipe-shaped valve comprises a pipe-shaped body 1, an upper joint 2, a lower joint 3, an elastic piece 4, a metal valve ball 5, a metal valve seat 6 and a locking column 7.
The lower end of the upper joint 2 is connected with the upper end of the tubular body 1, and the upper end of the upper joint 2 is used for being connected with a water injection pipe column;
the lower end of the tubular body 1 is connected with the upper end of the lower joint 3, and the lower end of the lower joint 3 is used for being connected with a water injection pipe column;
the side part of the tubular body 1 is provided with a first channel 11 extending along the axial direction, the inner wall of the tubular body 1 is provided with a through hole 12, and two ends of the through hole 12 are respectively communicated with the first channel 11 and the inner cavity of the tubular body 1;
the elastic part 4, the metal valve ball 5 and the metal valve seat 6 are sequentially contacted along the direction from top to bottom to form a channel adjusting mechanism, and the metal valve seat 6 is positioned at the downstream of the through hole 12;
the locking post 7 has a second channel 71 extending in the axial direction, the locking post 7 is fixed in the first channel 11, and the locking post 7 is used for limiting the channel adjusting mechanism in the first channel 11.
When using, the embodiment of the utility model provides a well washing device inserts in the water injection tubular column and forms the tool string through top connection 2 and lower clutch 3 to wholly arrange in the well section that needs well washing in the water injection well.
The working principle of the well washing device is as follows:
as shown in fig. 1, when the tool string is normally run into the well or the water injection string is used for normal water injection, at this time, the injected water enters the upper joint 2 of the well washing device after passing through the upper water injection string, and the internal pressure of the water injection string is greater than or equal to the internal pressure of the shaft, under the action of the pressure difference, the elastic part 4 is in a normal extension state and presses the metal valve ball 5 onto the metal valve seat 6, the two are matched and sealed, so that the first channel 11 is kept in a sealed state, and the injected water continues to enter the lower water injection string from the lower joint 3, and further normal water injection is realized.
As shown in fig. 2, when a well is required to be washed, a well washing liquid enters from the oil sleeve annulus through the second channel 71 of the locking column 7, so that the well washing pressure inside the shaft is greater than the internal pressure of the water injection pipe column, and when the pressure difference reaches a set threshold value, the well washing liquid pushes the metal valve ball 5 upwards, so that the metal valve ball 5 compresses the elastic part 4 and is separated from the metal valve seat 6, the sealing between the metal valve ball and the metal valve seat is released, and the first channel 11 is kept in an unblocked state. As the first channel 11 is communicated with the via hole 12, the well-flushing liquid sequentially passes through the first channel 11 and the via hole 12 and then enters the inner cavity of the tubular body 1, and further enters the water injection pipe column, so that normal well flushing is realized.
After the well washing is finished, the internal pressure of the water injection pipe column and the internal pressure of the shaft are restored to be balanced and even restored to a water injection state, and under the action of the pressure, the compressed elastic piece 4 automatically resets under the action of elastic force, so that the metal valve ball 5 is pushed to reset and form sealing with the metal valve seat 6, and the well washing channel is closed again to ensure normal water injection.
It can be seen that the embodiment of the utility model provides a well washing device, the passageway adjustment mechanism through making elastic component 4, metal valve ball 5, metal valve seat 6 constitute is located the first passageway 11 that tubular body 1 lateral part was seted up to lock through locking post 7. Through being located the passageway with passageway adjustment mechanism and adjusting the position of metal valve ball 5 based on the pressure differential effect between water injection tubular column internal pressure and the pit shaft internal pressure, and then utilize this passageway adjustment mechanism to open or the shutoff passageway between first passageway 11 and via hole 12, and then make the water injection tubular column can switch between water injection operation and well-flushing operation. Because the elastic part 4, the metal valve ball 5 and the metal valve seat 6 are sequentially contacted along the direction from top to bottom, namely, the axial directions of the elastic part 4, the metal valve ball 5 and the metal valve seat are consistent, the acting force direction of the elastic part 4 is perpendicular to the metal valve ball 5, the deformation caused by long-term impact of liquid is avoided, the effectiveness of the well washing device is kept for a long time, and the assembly difficulty of the well washing device is also simplified.
Wherein, metal valve seat 6 is located the low reaches of via hole 12, like this, when the well-flushing operation, even the well-flushing liquid gets into first passageway 11 by via hole 12, nevertheless, because metal valve seat 6 is by the shutoff of metal valve ball 5 for the well-flushing liquid can not be discharged by first passageway 11, and then guarantees going on smoothly of well-flushing operation.
Additionally, the embodiment of the utility model provides an used metal valve ball 5 and metal valve seat 6, both cooperate the sealed face that constitutes to be difficult for various impurity in the adhesion well, and then ensured that the problem of sealed inefficacy can not appear in the well-flushing passageway, can guarantee cleanness and safety in the well, can prolong normal water injection cycle again.
In some possible implementations, the embodiment of the present invention provides a well washing device, as shown in fig. 3, wherein the tubular body 1 includes: a main body section 101, two joint sections 102, and a well-flushing channel section 103;
the two joint sections 102 are respectively connected with two ends of the main body section 101, and the two joint sections 102 are also used for being respectively connected with a water injection string;
a through hole 12 is formed in the side wall of the main body section 101, and the through hole 12 is communicated with the inner cavity of the main body section 101;
the well-flushing passage section 103 is connected with the outer side wall of the main body section 101, the first passage 11 is located in the well-flushing passage section 103 along the axial direction, the first passage 11 penetrates through the lower end of the well-flushing passage section 103, and the upper end of the well-flushing passage section 103 is a closed end, so that support can be provided for the elastic piece 4.
With the above design, it is only necessary to provide the tubular body 1 with the well-flushing passage section 103 at a specific position on the side, that is, only to provide the tubular body 1 with a protrusion extending in the axial direction at a specific position on the side, and the protrusion serves as the well-flushing passage section 103 to provide the first passage 11, which is advantageous for simplifying the structure of the tubular body 1.
The embodiment of the utility model provides an in, make main part section 101, two joint sections 102, well-flushing passageway section 103 connect through the integrated into one piece mode, that is to say, make 1 formula structure as an organic whole of tubulose body, not only do benefit to the increase of strength, and further simplify the assembly degree of difficulty.
The embodiment of the utility model provides an in, elastic component 4 can be compression spring, also can be rubber helicoid or rubber sleeve etc.. In order to easily control the elastic force of the elastic member 4, the elastic member 4 is a compression spring.
The embodiment of the utility model provides an in, can only contact between elastic component 4 and the metal valve ball 5 and do not connect, utilize the inner wall of first passageway 11 to provide spacingly for elastic component 4, make it move under the pressure effect in first passageway 11 steadily.
The elastic element 4 and the metal valve ball 5 may also be connected to further ensure that the metal valve ball 5 can only move in the axial direction of the first channel 11 without other undesired displacements. The elastic member 4 and the metal valve ball 5 may be connected by welding or bonding, for example.
In order to improve the leakproofness between the lateral wall of metal disk seat 6 and the inner wall of first passageway 11, the embodiment of the utility model provides an in, be provided with first seal groove on the lateral wall of metal disk seat 6, have first sealing washer 8 in the first seal groove, first sealing washer 8 is used for sealing up the clearance between metal disk seat 6 and the first passageway 11.
The first sealing groove may be provided in one or more turns, and correspondingly, the first sealing ring 8 is also provided in one or more turns.
In the embodiment of the present invention, the second channel 71 of the locking column 7 coincides with the central axis of the first channel 11. The locking post 7 is threaded into the first channel 11. That is, the outer wall of the locking column 7 is provided with an external thread, and the inner wall of the first channel 11 is provided with a corresponding internal thread, so that the locking column 7 is fixed inside the first channel 11 through threaded connection to lock the channel adjusting mechanism.
In order to improve the leakproofness between the lateral wall of locking post 7 and the inner wall of first passageway 11, the embodiment of the utility model provides an in, be provided with the second seal groove on the lateral wall of locking post 7, have second sealing washer 9 in the second seal groove, second sealing washer 9 is used for sealing up the clearance between locking post 7 and the first passageway 11.
The second sealing groove may be provided in one or more turns, and correspondingly, the second sealing ring 9 is also provided in one or more turns.
The embodiment of the utility model provides an in, make the lower extreme of top connection 2 and the upper end threaded connection of tubulose body 1, the upper end of top connection 2 is configured to be connected with the water injection tubular column through the threaded connection mode. The lower end of the tubular body 1 is screwed with the upper end of the lower joint 3, and the lower end of the lower joint 3 is configured to be connected with a water injection string by means of screwing.
By the design, the connection operation and the disassembly operation between the well washing device and the water injection pipe column can be simplified, and meanwhile, the connection tightness among all the parts is ensured.
In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.
The above description is only for facilitating the understanding of the technical solutions of the present invention by those skilled in the art, and is not intended to limit the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A well-flushing device, characterized in that it comprises: the device comprises a tubular body, an upper joint, a lower joint, an elastic piece, a metal valve ball, a metal valve seat and a locking column;
the lower end of the upper joint is connected with the upper end of the tubular body, and the upper end of the upper joint is used for being connected with a water injection tubular column;
the lower end of the tubular body is connected with the upper end of the lower joint, and the lower end of the lower joint is used for being connected with a water injection tubular column;
the side part of the tubular body is provided with a first channel extending along the axial direction, the inner wall of the tubular body is provided with a through hole, and two ends of the through hole are respectively communicated with the first channel and the inner cavity of the tubular body;
the elastic piece, the metal valve ball and the metal valve seat are sequentially contacted along the direction from top to bottom to form a channel adjusting mechanism, and the metal valve seat is positioned at the downstream of the through hole;
the locking column is provided with a second channel extending along the axial direction, the locking column is fixed in the first channel, and the locking column is used for limiting the channel adjusting mechanism in the first channel.
2. The well-flushing device of claim 1, wherein the tubular body comprises: the well washing device comprises a main body section, two joint sections and a well washing channel section;
the two joint sections are respectively connected with two ends of the main body section, the side wall of the main body section is provided with the through hole, and the through hole is communicated with the inner cavity of the main body section;
the well-flushing channel section is connected with the outer side wall of the main body section, the first channel is located in the well-flushing channel section along the axial direction, and the first channel penetrates through the lower end of the well-flushing channel section.
3. The well-flushing device of claim 2, wherein the body section, the two joint sections, and the flushing channel section are connected by integral molding.
4. A well-flushing device as claimed in claim 1, in which the resilient member is a compression spring.
5. A well-flushing device as claimed in claim 1, wherein the resilient member is connected to the metal valve ball by welding or adhesive means.
6. The well-flushing device of claim 1, wherein a first seal groove is disposed on an outer sidewall of the metal valve seat, and a first seal ring is disposed in the first seal groove and is used for sealing a gap between the metal valve seat and the first channel.
7. The well-flushing device of claim 1, wherein the locking post is threadably connected to the first passage.
8. The well washing device of claim 1, wherein a second sealing groove is formed in an outer side wall of the locking column, and a second sealing ring is arranged in the second sealing groove and used for sealing a gap between the locking column and the first channel.
9. The well-flushing device of claim 1, wherein a lower end of the upper sub is threadably connected to an upper end of the tubular body, the upper end of the upper sub being configured to threadably connect to a water injection string.
10. The well-flushing device of claim 1, wherein the lower end of the tubular body is threadably connected to the upper end of the lower sub, the lower end of the lower sub being configured to be threadably connected to a water injection string.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022891214.6U CN214303741U (en) | 2020-12-02 | 2020-12-02 | Well washing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022891214.6U CN214303741U (en) | 2020-12-02 | 2020-12-02 | Well washing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214303741U true CN214303741U (en) | 2021-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022891214.6U Active CN214303741U (en) | 2020-12-02 | 2020-12-02 | Well washing device |
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| Country | Link |
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| CN (1) | CN214303741U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198074A (en) * | 2021-11-26 | 2022-03-18 | 中国石油天然气股份有限公司 | Casing liquid back-discharging device |
| CN114961605A (en) * | 2022-06-02 | 2022-08-30 | 中海石油(中国)有限公司湛江分公司 | Hydraulic opening and closing circulating valve |
-
2020
- 2020-12-02 CN CN202022891214.6U patent/CN214303741U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198074A (en) * | 2021-11-26 | 2022-03-18 | 中国石油天然气股份有限公司 | Casing liquid back-discharging device |
| CN114198074B (en) * | 2021-11-26 | 2024-04-12 | 中国石油天然气股份有限公司 | Casing liquid flowback device |
| CN114961605A (en) * | 2022-06-02 | 2022-08-30 | 中海石油(中国)有限公司湛江分公司 | Hydraulic opening and closing circulating valve |
| CN114961605B (en) * | 2022-06-02 | 2023-07-18 | 中海石油(中国)有限公司湛江分公司 | Hydraulic open-close circulation valve |
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