CN217354339U - Water nozzle structure for oil field downhole injection allocation tool - Google Patents
Water nozzle structure for oil field downhole injection allocation tool Download PDFInfo
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- CN217354339U CN217354339U CN202221358481.XU CN202221358481U CN217354339U CN 217354339 U CN217354339 U CN 217354339U CN 202221358481 U CN202221358481 U CN 202221358481U CN 217354339 U CN217354339 U CN 217354339U
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Abstract
The utility model discloses a water nozzle structure for an oil field downhole injection allocation tool, which comprises a fixed body and a working body arranged in the fixed body, wherein a fixed body sealing element A is arranged in a groove at the outer side of the middle part of the fixed body, fixed body sealing elements B are arranged at the outer sides of the two ends of the fixed body, a penetrating end of the working body arranged in the fixed body is sequentially sleeved with a spacer and a steel wire retainer ring, and an inner sealing element arranged in the fixed body is sleeved on the working body; the water nozzle structure for the oil field downhole injection allocation tool adopts a rotary opening and closing mode, so that the sealing effect of a sealing element is ensured, and the service life is prolonged; the symmetrically distributed liquid guide holes are adopted, so that pressure balance is achieved, and pressure unbalance loading is reduced; the pressure balance groove is arranged, so that the axial pressure generated by the medium on the pressure control element is reduced, and the thrust requirement of the water nozzle is further reduced; the positioning element is arranged to ensure the integrity between the two.
Description
Technical Field
The utility model particularly relates to a water injection well choke structure that is used for oil field to join in marriage notes instrument in pit.
Background
Along with the continuous progress of oil field digitization and intelligent injection allocation technology, the intelligent layered injection allocation technology is continuously updated and put into use, the water nozzle structure technology of the underground injection allocation tool is slowly updated, most of the existing stages are in an axial opening and closing mode, and the existing water nozzle structure has the defects of low sealing performance, damaged sealing elements and easy initiation of medium leakage.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to prior art's weak point, provide a water injection well choke structure for oil field is joined in marriage in pit and is annotated instrument, guaranteed sealing element's sealed effect, prolonged life.
In order to realize the purpose, the water nozzle structure for the oil field downhole injection allocation tool comprises a fixing body and a working body arranged inside the fixing body, wherein a fixing body sealing piece A is arranged inside a groove in the middle of the fixing body, fixing body sealing pieces B are arranged outside two ends of the fixing body, a penetrating end of the working body arranged inside the fixing body is sequentially sleeved with a spacer and a steel wire retainer ring, and an inner sealing piece arranged inside the fixing body is sleeved on the working body.
In the above, one end of the working body arranged inside the fixed body is a pressure control section, the pressure control section is made into a cylindrical structure by ceramic materials, the ceramic materials comprise zirconia and alumina, liquid guide grooves are symmetrically arranged on the pressure control section and are used as medium circulation channels, a pressure balance groove is arranged on the outer circular surface of the transition section in the middle of the working body, the other end of the working body penetrating out of the fixed body is a transmission section, and the transmission section is made into a cylindrical structure by stainless steel materials; the outer part is in a stepped shaft structure.
In the foregoing, the small-diameter end of the stepped shaft of the transmission section of the working body is provided with a positioning channel, the small-diameter end is provided with a power butt joint port, and the small-diameter end is in butt joint with an external power source.
In the foregoing, the fixing body is made of a high-hardness material into a cylindrical structure, and the middle of the fixing body is symmetrically provided with liquid guide holes.
In the foregoing, the cylindrical outer side surface of the fixing body is provided with a groove for mounting the fixing body sealing member a and the fixing body sealing member B, the inside of the fixing body adopts a stepped hole form, and the small hole section inside the fixing body is provided with a groove for mounting the inner sealing member.
In the above, the end of the fixing body is provided with a stop groove, and the fixing body is externally connected with a stop element.
In the foregoing, the working body and the fixed body are paired by using coupling parts, the outer circular surface of the pressure control section of the working body is matt, the inner surface of the large step hole in the fixed body is matt, the assembly gap is in micron order, and the transmission section of the working body and the small hole of the fixed body are sealed by adding soft filler.
In the foregoing, the working body and the fixing body are positioned and prevented from falling off through the spacer and the steel wire check ring.
Compared with the prior art, the beneficial effects of the utility model are that: the water nozzle structure for the oil field downhole injection allocation tool adopts a rotary opening and closing mode, so that the sealing effect of a sealing element is ensured, and the service life is prolonged; the symmetrically distributed liquid guide holes are adopted, so that pressure balance is achieved, and pressure unbalance loading is reduced; the pressure balance groove is arranged, so that the axial pressure of the medium on the pressure control element is reduced, and the thrust requirement of the water nozzle is further reduced; the positioning element is arranged to ensure the integrity between the two.
Drawings
Fig. 1 is a schematic perspective view of the structure of the present invention;
FIG. 2 is a schematic perspective view of the structure of the present invention with the sealing element removed;
FIG. 3 is a schematic top view of the structure of the present invention;
fig. 4 is a schematic cross-sectional view of the present invention.
Labeling in the figure: 1. a working body; 2. a fixed body; 3. a stationary body seal member A; 4. an inner seal; 5. a stationary body seal member B; 6. a steel wire retainer ring; 7. and (4) a spacer.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of 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 only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
A water nozzle structure for an oil field downhole injection allocation tool comprises a fixed body 2, a working body 1 and an inner sealing element 4 which are arranged in the fixed body, a fixed body sealing element A3 and a fixed body sealing element B5 which are arranged outside the fixed body, and a steel wire retaining ring 6 and a spacer 7 which are used for preventing the fixed body 2 and the working body 1 from falling off.
The utility model adopts a rotary opening and closing mode, thereby ensuring the sealing effect of the inner sealing element 4 and prolonging the service life; the working body 1 is provided with a liquid guide groove, so that an enough overflowing channel is ensured; the cylindrical surface of the fixed body 2 is provided with symmetrically distributed liquid guide holes, so that pressure balance is achieved, and pressure unbalance loading is reduced; the working body 1 is provided with a pressure balance groove, so that the axial pressure generated by the medium on the working body is reduced; one end of the working body 1 is provided with a power butt joint port which can be in butt joint with an external power source; the end part of the fixed body 2 is provided with a stop groove, so that the stop positioning can be realized; the steel wire retainer ring 6 and the spacer 7 are arranged between the working body 1 and the fixed body 2, so that the integrity between the two is ensured.
And in the rotary opening and closing mode, pressure control adjustment is performed between the outer cylindrical surface of the sealing section of the working body 1 and the inner cylindrical surface of the sealing section of the fixing body 2 in a dynamic and hard sealing mode. The fixed body 2 is stopped and prevented from rotating through the stopping groove, the working body 1 is in butt joint with an external power source through one end of the working body, relative motion is generated between the working body 1 and the fixed body 2, and fluid entering the inside of the fixed body 2 sequentially flows through the liquid guide groove of the working body 1 and the liquid guide hole of the fixed body 2 and flows out.
The pressure balance groove is a groove which is used for communicating and guiding liquid between the large-diameter pressure regulating sealing section and the soft sealing section of the working body 1, so that medium pressure between the two sections is conducted, and further, the axial force acting on the large-diameter section is converted into the axial force of the small-diameter section, the action area is reduced, and the axial force is greatly reduced in a pressure balance mode.
The liquid guide holes are symmetrically distributed on the cylindrical surface of the fixing body 2, pressure balance is achieved by means of the symmetrical distribution mode, pressure unbalance is reduced, the load of the working body 1 during working is reduced, and the overall anti-back pressure capacity is improved.
The power butt joint port is a port form which is arranged at one end of the working body 1 and is used for butt joint with an external power source to transmit power, and external driving force can be transmitted to the working body 1 to drive the working body 1 to complete work.
The stop groove is an inward concave type which is uniformly distributed in the circumferential direction at the end part of the fixed body 2, and the axial thrust and the circumferential rotation stopping of the fixed body 2 are realized by being meshed with the stop element.
One end of the working body 1 is provided with a structure for installing a steel wire retainer ring 6 and a spacer 7 element, and the working body 1 and the fixing body 2 are locked together and are not loosened, so that the integrity and the easy installation of the working body 1 and the fixing body 2 are realized.
The operation flow of the water nozzle structure for the oil field downhole injection allocation tool comprises the following steps:
firstly, a set of matching parts of the working body 1 and the fixed body 2 is taken, and the inner sealing element 4 is arranged in the fixed body 2.
Secondly, coating a proper amount of glycerol lubricating grease on the outer surface of the small-diameter section of the working body 1, slowly installing the working body into the fixed body 2 by adopting a manual spinning mode, and sequentially sleeving a spacer 7 and a steel wire check ring 6 at the penetrating end.
The fixed body seal a3 and the fixed body seal B5 are fitted to the corresponding mounting positions of the fixed body 2.
The technical solution of the present invention is explained in detail through specific embodiments, in the above embodiments, the descriptions of the embodiments are focused on, and for parts not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.
The utility model discloses realize that accuse pressure is nimble, sealed reliable, small in size, simple structure, be convenient for profitable technological effect such as installation.
It should be understood that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same. The technical solutions described in the above embodiments can be modified or part of the technical features can be equivalently replaced by those skilled in the art; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (7)
1. The utility model provides a water injection well choke structure for oil field is injection allocation instrument in pit, including fixed body (2) and install in the inside work body (1) of fixed body (2), its characterized in that: fixed body sealing member A (3) is installed to fixed body (2) middle part outside recess internally mounted, and fixed body sealing member B (5) are installed in fixed body (2) both ends outside, work body (1) is installed and is being worn out the end in fixed body (2) inside and suit shock insulator (7) and steel wire retaining ring (6) in proper order, and fixed body (2) internally mounted's interior sealing member (4) cover is put on work body (1).
2. A water nozzle arrangement for an oilfield downhole injection tool as defined in claim 1, wherein: the working body (1) is arranged in the fixed body (2), one end of the working body is a pressure control section, the pressure control section is made of ceramic materials and is of a cylindrical structure, liquid guide grooves are symmetrically arranged on the pressure control section, a pressure balance groove is arranged on the outer circular surface of a transition section in the middle of the working body (1), the other end, penetrating out of the fixed body (2), of the working body (1) is a transmission section, and the transmission section is made of stainless steel materials and is of a cylindrical structure; the outer part is in a stepped shaft structure.
3. A water nozzle arrangement for an oilfield downhole injection tool as defined in claim 2, wherein: the stepped shaft small-diameter end part of the transmission section of the working body (1) is provided with a positioning channel, and the small-diameter end part is in butt joint with an external power source.
4. A water nozzle arrangement for an oilfield downhole injection tool as defined in claim 1, wherein: the fixing body (2) is made of high-hardness materials and is of a cylindrical structure, and liquid guide holes are symmetrically formed in the middle of the fixing body (2).
5. A water nozzle structure for an oilfield downhole injection tool as defined in claim 4, wherein: the cylindrical outer side surface of the fixing body (2) is provided with a groove for installing a fixing body sealing element A (3) and a fixing body sealing element B (5), the fixing body (2) is internally provided with a step hole, and a small hole section in the fixing body (2) is provided with a groove for installing an inner sealing element (4).
6. A water nozzle structure for an oilfield downhole injection tool as defined in claim 5, wherein: the end part of the fixing body (2) is provided with a stop groove, and the fixing body (2) is externally connected with a stop element.
7. A water nozzle structure for an oilfield downhole injection tool according to any one of claims 1 to 6, wherein: the working body (1) and the fixed body (2) are matched by adopting matching parts, and the transmission section of the working body (1) and the small hole of the fixed body (2) are sealed by externally adding soft packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221358481.XU CN217354339U (en) | 2022-06-01 | 2022-06-01 | Water nozzle structure for oil field downhole injection allocation tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221358481.XU CN217354339U (en) | 2022-06-01 | 2022-06-01 | Water nozzle structure for oil field downhole injection allocation tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217354339U true CN217354339U (en) | 2022-09-02 |
Family
ID=83016819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221358481.XU Active CN217354339U (en) | 2022-06-01 | 2022-06-01 | Water nozzle structure for oil field downhole injection allocation tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217354339U (en) |
-
2022
- 2022-06-01 CN CN202221358481.XU patent/CN217354339U/en active Active
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