CN211201818U - Reverse circulation continuous valve - Google Patents
Reverse circulation continuous valve Download PDFInfo
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- CN211201818U CN211201818U CN202020006751.5U CN202020006751U CN211201818U CN 211201818 U CN211201818 U CN 211201818U CN 202020006751 U CN202020006751 U CN 202020006751U CN 211201818 U CN211201818 U CN 211201818U
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Abstract
The utility model relates to an oil drilling valve technical field discloses a reverse circulation continuous valve, include valve body, tee bend spheroid case, go up the valve seat, lower disk seat, be provided with the bypass runner on the valve body, central runner has in the valve body, tee bend spheroid case is used for opening and close central runner and bypass runner, be provided with the valve pocket in the central runner, the embedded last valve seat that is provided with and follows its axis removal regulation of central runner presses the cap, it will to go up the disk seat pressure cap go up disk seat, tee bend spheroid case and lower disk seat seal compress tightly in the valve cavity, central runner is located the upper valve seat and presses cap one side to have the horn mouth. The utility model discloses a tee bend spheroid case can freely switch the flow direction of drilling fluid between central runner and bypass flow channel, realizes the incessant circulation of drilling fluid among the drilling process, can adjust at any time simultaneously and press the cap with the valve seat, makes last disk seat, tee bend spheroid case and lower disk seat remain throughout and closely laminate, guarantees the leakproofness of reverse circulation continuous valve.
Description
Technical Field
The utility model belongs to the technical field of oil drilling valve, especially, relate to a reverse circulation continuous valve.
Background
The uninterrupted circulation drilling technology is an emerging drilling technology developed in recent years, and when a stratum with a narrow window is encountered in the drilling process, the uninterrupted circulation of the downhole drilling fluid during the connection of a single joint or a stand column has important engineering significance. The uninterrupted circulation can maintain the circulation equivalent density of the drilling fluid within a certain range, and can effectively avoid the fluctuation of pressure up and down caused by the operation of connecting a single or an upright column in the normal drilling process, continuously clean the well and improve the working condition of the well, greatly reduce the circulation loss of the drilling fluid, and effectively reduce the probability of stratum fracture, well kick, drill jamming, drill bit or bottom drilling tool combination blocking and drilling.
The uninterrupted technology can be applied to extended-reach wells, deep wells, underbalanced wells and the like, not only can the stability of the well wall be effectively enhanced, but also the exposed oil layer can be well protected, and the cost of oil-gas development is reduced to a certain extent. Therefore, the continuous valve circulation technology has good application prospect.
SUMMERY OF THE UTILITY MODEL
A first object of the present invention is to provide a reverse circulation continuous valve, which is not enough in the prior art.
The embodiment of the utility model is realized like this:
the utility model provides a reverse circulation continuous valve, includes valve body, tee bend spheroid case, goes up valve seat, lower disk seat, be provided with the bypass runner on the valve body, has the centre runner in the valve body, tee bend spheroid case is used for opening and close centre runner and bypass runner, be provided with the valve pocket in the centre runner, embedded threaded connection has the last valve seat pressure cap that can follow its axis removal regulation in the centre runner, it will to go up the disk seat pressure cap go up disk seat, tee bend spheroid case and lower disk seat seal and compress tightly in the valve pocket, the centre runner is located last valve seat and presses cap one side to have the horn mouth.
Furthermore, an operating key is connected to the ball valve core.
Furthermore, a bypass valve seat connected with the three-way ball valve core is arranged in the bypass flow channel, and a valve seat plug is arranged on the outer side of the bypass valve seat.
Furthermore, the upper valve seat and the lower valve seat are provided with two sides of the spherical valve core, the upper valve seat is abutted with the upper valve seat pressing cap, and the lower valve seat is abutted with the valve cavity.
Furthermore, a first wave spring is arranged between the upper valve seat and the upper valve seat pressing cap, and a second wave spring is arranged between the lower valve seat and the valve cavity.
Furthermore, a first O-shaped sealing ring in sealing connection with the valve cavity is arranged on the upper valve seat, and a second O-shaped sealing ring in sealing connection with the valve cavity is arranged on the lower valve seat.
The utility model has the advantages that:
the utility model discloses simple structure can freely switch the flow direction of drilling fluid between central runner and bypass flow channel through tee bend spheroid case, realizes the incessant circulation of drilling fluid among the drilling process, can adjust at any time simultaneously and press the cap with the upper valve seat, makes upper valve seat, tee bend spheroid case and lower disk seat remain throughout and closely laminate, guarantees the leakproofness of reverse circulation continuous valve.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural view of a reverse circulation continuous valve provided by the present invention;
fig. 2 is a structural schematic diagram of a three-way ball valve core.
Icon: the valve comprises a valve body 1, a three-way ball valve core 2, an upper valve seat 3, a lower valve seat 4, a bypass flow channel 5, a bypass valve seat 6, a valve seat plug 7, a central flow channel 8, a second wave spring 9, an upper valve seat press cap 10, a first wave spring 11, an operating key 12, a first O-shaped sealing ring 13 and a second O-shaped sealing ring 14.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1 to 2, the present embodiment provides a reverse circulation continuous valve, which includes a valve body 1, a three-way ball valve core 2, an upper valve seat 3, and a lower valve seat 4, wherein a bypass flow passage 5 is disposed on the valve body 1, a bypass valve seat 6 connected to the three-way ball valve core 2 is hermetically connected in the bypass flow passage 5, and a valve seat plug 7 connected to the bypass flow passage 5 through a thread is disposed outside the bypass valve seat 6. The three-way ball valve is characterized in that a central flow passage 8 is arranged in the valve body 1, a valve cavity is arranged in the central flow passage 8, the three-way ball valve element 2, the upper valve seat 3 and the lower valve seat 4 are arranged in the valve cavity, the upper valve seat 3 and the lower valve seat 4 are positioned on two sides of the three-way ball valve element 2, the three-way ball valve element 2 is connected with an operation key 12, and the operation key 12 is rotated to adjust the conduction and the closing of the central flow passage 8 and the bypass flow passage 5. One side, far away from the three-way ball valve core 2, of the lower valve seat 4 is abutted against the inner side wall of the valve cavity, a second wave spring 9 is welded between the lower valve seat 4 and the valve cavity, one end, far away from the three-way ball valve core 2, of the upper valve seat 3 is abutted against an upper valve seat pressing cap 10, a first wave spring 11 is welded between the upper valve seat 3 and the upper valve seat pressing cap 10, the upper valve seat pressing cap 10 is in threaded connection with the inner wall of the central flow channel 8, the upper valve seat 3, the three-way ball valve core 2 and the lower valve seat 4 are tightly pressed in the valve cavity in a sealing mode through the upper valve seat pressing cap 10, a first O-shaped sealing ring 13 in sealing connection with the valve cavity is installed on the upper valve seat 3, and a second O-shaped sealing ring 14 in sealing connection with the valve cavity.
The working principle of the utility model is as follows:
in normal drilling, the three-way ball valve core 2 is rotated through the operation key 12, so that the central flow channels 8 at two sides are communicated, the bypass flow channel 5 is sealed by the three-way ball valve core 2, and drilling fluid flows from the central flow channel 8; when the bypass flow channel 5 needs to be opened, the valve seat plug 7 is taken down, the three-way ball valve core 2 is rotated through the operation key 12, the central flow channel 8 on one side is communicated with the bypass flow channel 5, and drilling fluid is circulated in a bypass mode.
As can be seen from the above, the present invention has the following advantages:
1. the inner wall of the central flow passage is in threaded connection with an upper valve seat pressing cap 10, the service life of the valve is prolonged at any time, when gaps appear among the three-way ball valve core 2, the upper valve seat 3 and the lower valve seat 4 due to abrasion, the upper valve seat pressing cap 10 can be adjusted to enable the three-way ball valve core 2, the upper valve seat 3 and the lower valve seat 4 to be abutted against each other, leakage is avoided, the sealing performance of the reverse circulation continuous valve is guaranteed, meanwhile, a horn mouth is formed in the central flow passage on one side of the upper valve seat pressing cap 10 to facilitate installation of the upper valve seat pressing cap 10, and a conical step surface is formed on the outer end face of the upper valve seat pressing cap 10 to facilitate insertion of a tool into the conical step surface to adjust the upper valve seat pressing cap 10.
2. Metal hard seals are formed between the three-way ball valve core 2 and the upper valve seat 3 and between the three-way ball valve core and the lower valve seat 4, and the first wave spring 11 and the second wave spring 9 are arranged, so that the valve core becomes a floating structure under the action of liquid pressure, and the torque of the three-way ball valve core 2 during rotation is effectively reduced.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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 (6)
1. A reverse circulation continuous valve characterized by: including valve body (1), tee bend spheroid case (2), go up valve seat (3), lower disk seat (4), be provided with bypass runner (5) on valve body (1), central runner (8) have in valve body (1), tee bend spheroid case (2) are used for opening and close central runner (8) and bypass runner (5), be provided with the valve pocket in central runner (8), embedded threaded connection has last valve seat pressure cap (10) that can follow its axis removal regulation in central runner (8), it will to go up valve seat pressure cap (10) go up disk seat (3), tee bend spheroid case (2) and lower disk seat (4) seal pressure in the valve pocket, central runner (8) are located last valve seat pressure cap (10) one side and have the horn mouth.
2. The reverse circulation continuous valve of claim 1, wherein: the ball valve core is connected with an operating key (12).
3. The reverse circulation continuous valve of claim 1, wherein: and a bypass valve seat (6) connected with the three-way ball valve core (2) is arranged in the bypass flow channel (5), and a valve seat plug (7) is arranged on the outer side of the bypass valve seat (6).
4. The reverse circulation continuous valve of claim 1, wherein: the upper valve seat (3) and the lower valve seat (4) are provided with two sides of the spherical valve core, the upper valve seat (3) is abutted to the upper valve seat pressing cap (10), and the lower valve seat (4) is abutted to the valve cavity.
5. The reverse circulation continuous valve of claim 4, wherein: a first wave spring (11) is arranged between the upper valve seat (3) and the upper valve seat pressing cap (10), and a second wave spring (9) is arranged between the lower valve seat (4) and the valve cavity.
6. The reverse circulation continuous valve of claim 5, wherein: the upper valve seat (3) is provided with a first O-shaped sealing ring (13) which is in sealing connection with the valve cavity, and the lower valve seat (4) is provided with a second O-shaped sealing ring (14) which is in sealing connection with the valve cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020006751.5U CN211201818U (en) | 2020-01-02 | 2020-01-02 | Reverse circulation continuous valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020006751.5U CN211201818U (en) | 2020-01-02 | 2020-01-02 | Reverse circulation continuous valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211201818U true CN211201818U (en) | 2020-08-07 |
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ID=71857563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020006751.5U Active CN211201818U (en) | 2020-01-02 | 2020-01-02 | Reverse circulation continuous valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211201818U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111894499A (en) * | 2020-09-14 | 2020-11-06 | 成都西南石大石油工程技术有限公司 | Reverse circulation drilling system |
-
2020
- 2020-01-02 CN CN202020006751.5U patent/CN211201818U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111894499A (en) * | 2020-09-14 | 2020-11-06 | 成都西南石大石油工程技术有限公司 | Reverse circulation drilling system |
| CN111894499B (en) * | 2020-09-14 | 2024-06-11 | 成都西南石大石油工程技术有限公司 | Reverse circulation drilling system |
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