CN216517916U - Bidirectional well sealing device - Google Patents
Bidirectional well sealing device Download PDFInfo
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- CN216517916U CN216517916U CN202123415231.3U CN202123415231U CN216517916U CN 216517916 U CN216517916 U CN 216517916U CN 202123415231 U CN202123415231 U CN 202123415231U CN 216517916 U CN216517916 U CN 216517916U
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Abstract
The utility model relates to the technical field of well plugging, and discloses a bidirectional well plugging device which comprises a first sleeve and a second sleeve, wherein the upper end of the second sleeve is fixedly inserted into the lower end part of the first sleeve, and seal heads are arranged at the upper end part and the lower end part of the first sleeve; an insertion pipe penetrates through the inner cavity of the first sleeve in a movable mode, two servo motors arranged in opposite directions are fixedly installed in the middle of one side wall of the first sleeve, and a transmission rod is fixed at the driving ends of the two servo motors. According to the utility model, the two ends of the first sleeve are respectively provided with the seal heads, and the power components for respectively driving the two seal heads are arranged in the side wall of the first sleeve, so that the effect of bidirectional sealing can be achieved when the insertion tube is in a state of extending out of the first sleeve or not extending out of the first sleeve, and the device is practical and suitable for wide popularization and use.
Description
Technical Field
The utility model belongs to the technical field of well sealing, and particularly relates to a bidirectional well sealing device.
Background
In the oil field perforation process, the underground well sealing device is a well sealing device commonly used after perforation of an oil field oil production well, and is used for preventing the oil well from generating blowout, overflow and other environmental pollution when waiting to be produced.
Chinese patent publication No. CN 105986777 a was retrieved and discloses an underground well shut-in device, comprising: a first sleeve, a second sleeve, a sealing valve, and an inner seal; the lower end of the body of the second sleeve is inserted into the first sleeve along the axial direction, and the second sleeve is fixedly connected with the first sleeve; the sealing valve is rotatably connected to the lower end of the second sleeve body and can close the second sleeve; the inner sealing piece is embedded in the second sleeve. Although the underground well sealing device provided by the technical scheme can be directly lowered to the preset operation of underground operation along with the well completion tool, the communication or sealing of the gas well can be controlled by opening or closing the sealing valve, so that the underground well sealing without killing the gas well is realized, the limitation of the construction type of the underground operation is avoided, the well sealing can be realized aiming at various underground operation requirements after the underground well sealing device is lowered to the preset position needing the underground operation, and the application range of the underground operation without killing the gas well is effectively expanded.
However, the inventor finds that the technical scheme still has at least the following defects: in the technical scheme, the sealing assembly is arranged at the lower part of the first sleeve, so that the effect of bidirectional well sealing cannot be achieved.
The present invention has been made in view of this situation.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model adopts the technical scheme that: the bidirectional well sealing device comprises a first sleeve and a second sleeve, wherein the upper end of the second sleeve is fixedly inserted into the lower end part of the first sleeve, and seal heads are arranged at the upper end part and the lower end part of the first sleeve.
An insertion pipe penetrates through the inner cavity of the first sleeve movably, two servo motors arranged in opposite directions are fixedly installed in the middle of one side wall of the first sleeve, and a transmission rod is fixed at the driving ends of the two servo motors.
The two end sockets are movably hinged with the end part of the first sleeve through two transmission assemblies respectively, and one ends, far away from the servo motor, of the two transmission rods are used for driving the two end sockets to rotate through the two transmission assemblies respectively.
As a preferred embodiment of the present invention, the transmission assembly mainly includes a shaft rod and a follower crown gear, the follower crown gear is fixedly sleeved on the shaft rod, the shaft rod is installed on an end surface of the first sleeve, one end of the seal head is fixed on the shaft rod, one end of the transmission rod away from the servo motor is fixed with a driving gear, and the driving gear is engaged with the follower crown gear.
In a preferred embodiment of the present invention, gear running grooves for receiving the driving gear are formed at both ends of the first sleeve.
In a preferred embodiment of the utility model, sealing rubber gaskets are fixed on one surfaces of the two end sockets close to the insertion tube.
In a preferred embodiment of the present invention, the sealing rubber pad is fitted to the end surface of the cannula.
Compared with the prior art, the utility model has the following beneficial effects: according to the utility model, the two ends of the first sleeve are respectively provided with the seal heads, and the side wall of the first sleeve is internally provided with the power assembly for respectively driving the two seal heads, so that the effect of bidirectional sealing can be achieved when the cannula is in a state of extending out of the first sleeve and a state of not extending out of the first sleeve.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is an enlarged schematic view of the utility model at a in fig. 1.
Fig. 3 is a schematic view of the front cross-sectional structure of the cannula at the position after the cannula is lowered.
In the figure: 1-a first sleeve; 2-a second sleeve; 3-sealing the end; 4-a servo motor; 5, intubation; 6-a transmission rod; 7-sealing rubber gasket; 8-a drive gear; 9-a follower crown gear; 10-shaft lever; 11-gear running groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention.
As shown in fig. 1 to 3, the bidirectional well sealing device comprises a first sleeve 1 and a second sleeve 2, wherein the upper end of the second sleeve 1 is fixedly inserted into the lower end of the first sleeve 1, and seal heads 3 are arranged at the upper end and the lower end of the first sleeve 1; an insertion pipe 5 penetrates through the inner cavity of the first sleeve 1 movably, two servo motors 4 arranged in opposite directions are fixedly installed in the middle of one side wall of the first sleeve 1, and a transmission rod 6 is fixed at the driving ends of the two servo motors 4; the two seal heads 3 are movably hinged with the end part of the first sleeve 1 through two transmission assemblies respectively, one ends of the two transmission rods 6, which are far away from the servo motor 4, drive the two seal heads 3 to rotate through the two transmission assemblies respectively, in the initial condition, as shown in figure 1, the lower end of the insertion pipe 5 does not extend out of the lower end of the first sleeve 1, and at the moment, one servo motor 4 works to drive a driving gear 8 to be rotationally meshed with a follow-up crown gear 9 connected with the seal heads 3 through the transmission rods 6, so that the seal heads 3 at the lower end of the first sleeve 1 are ensured to be sealed at the lower end opening part of the insertion pipe 5; when the inserting pipe 5 descends from the first sleeve 1 until the upper end of the inserting pipe 5 is flush with the upper end face of the first sleeve 1, the other servo motor 4 drives the driving gear 8 connected with the other servo motor to be meshed with the follow-up crown gear 9 to rotate through the transmission rod 6, and therefore the sealing head 3 located on the upper portion of the first sleeve 1 is driven to rotate to be covered on the upper portion of the inserting pipe 5 in a sealing mode.
As shown in fig. 1 to 3, in a specific embodiment, the transmission assembly mainly includes a shaft rod 10 and a follower crown gear 9, the follower crown gear 9 is fixedly sleeved on the shaft rod 10, the shaft rod 10 is installed on the end surface of the first sleeve 1, one end of the seal head 3 is fixed on the shaft rod 10, one end of the transmission rod 10 far away from the servo motor 4 is fixed with a driving gear 8, the driving gear 8 is engaged on the follower crown gear 9, gear running grooves 11 for accommodating the driving gear 8 are respectively provided at two ends of the first sleeve 1, sealing rubber pads 7 are fixed on one surfaces of the two seal heads 3 close to the insertion tube 5, and the sealing rubber pads 7 are adapted to the end surface of the insertion tube 5.
The implementation principle of the bidirectional well sealing device of the embodiment is as follows: in the initial situation, as shown in fig. 1, the lower end of the insertion tube 5 does not extend out of the lower end of the first sleeve 1, and at this time, one of the servo motors 4 works to drive the driving gear 8 to rotationally engage with the follower crown gear 9 connected with the seal head 3 through the transmission rod 6, so as to ensure that the seal head 3 at the lower end of the first sleeve 1 is sealed at the lower port of the insertion tube 5.
When the inserting pipe 5 descends from the first sleeve 1 until the upper end of the inserting pipe 5 is flush with the upper end face of the first sleeve 1, the other servo motor 4 drives the driving gear 8 connected with the other servo motor to be meshed with the follow-up crown gear 9 to rotate through the transmission rod 6, and therefore the sealing head 3 located on the upper portion of the first sleeve 1 is driven to rotate to be covered on the upper portion of the inserting pipe 5 in a sealing mode.
Claims (5)
1. The bidirectional well sealing device comprises a first sleeve (1) and a second sleeve (2), and is characterized in that the upper end of the second sleeve (2) is fixedly inserted at the lower end of the first sleeve (1), and seal heads (3) are arranged at the upper end and the lower end of the first sleeve (1); an insertion pipe (5) penetrates through the inner cavity of the first sleeve (1) movably, two servo motors (4) arranged in opposite directions are fixedly installed in the middle of one side wall of the first sleeve (1), and a transmission rod (6) is fixed at the driving ends of the two servo motors (4); the two seal heads (3) are movably hinged with the end part of the first sleeve (1) through two transmission assemblies respectively, and one ends, far away from the servo motor (4), of the two transmission rods (6) are driven to rotate by the two seal heads (3) through the two transmission assemblies respectively.
2. The bidirectional well sealing device according to claim 1, wherein the transmission assembly mainly comprises a shaft rod (10) and a follow-up crown gear (9), the follow-up crown gear (9) is fixedly sleeved on the shaft rod (10), the shaft rod (10) is installed on the end surface of the first sleeve (1), one end of the seal head (3) is fixed on the shaft rod (10), one end of the transmission rod (6) far away from the servo motor (4) is fixed with a driving gear (8), and the driving gear (8) is meshed on the follow-up crown gear (9).
3. A bi-directional well shut-in device according to claim 1, characterized in that both ends of the first sleeve (1) are provided with gear running grooves (11) for receiving the driving gear (8).
4. A bidirectional well sealing device according to claim 1, characterized in that sealing rubber pads (7) are fixed on one surfaces of the two sealing heads (3) close to the insertion pipe (5).
5. A bi-directional well-sealing device according to claim 4, characterized in that the sealing rubber pad (7) is fitted and sealed with the end face of the insertion pipe (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123415231.3U CN216517916U (en) | 2021-12-31 | 2021-12-31 | Bidirectional well sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123415231.3U CN216517916U (en) | 2021-12-31 | 2021-12-31 | Bidirectional well sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216517916U true CN216517916U (en) | 2022-05-13 |
Family
ID=81514546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123415231.3U Active CN216517916U (en) | 2021-12-31 | 2021-12-31 | Bidirectional well sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216517916U (en) |
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2021
- 2021-12-31 CN CN202123415231.3U patent/CN216517916U/en active Active
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