Eccentric water distributor
By introducing an electric cylinder and an anti-backflow valve into the eccentric water distributor, the problems of fixed water injection channel opening size and short equipment lifespan are solved, achieving precise water injection and long-term equipment operation.
Patent Information
- Application Number
- CN202520211888.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-11
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-02-11
AI Technical Summary
Existing eccentric water distributors are prone to backflow of dirt into the tubing when the injection pressure is lower than the formation pressure. The water distributor equipment may be damaged due to the backflow of formation water, resulting in a short service life. In addition, the size of the water injection channel opening is fixed, making it impossible to achieve precise water injection.
An eccentric water distributor was designed, including a conical adjusting head. Through the extension and retraction of the electric cylinder and the conical adjusting hand, dirt is prevented from flowing back into the tubing. The design of the water distributor, by controlling the extension and retraction stroke of the electric cylinder, adjusts the opening size of the water injection channel. Combined with the anti-backflow valve, it prevents dirt from flowing back, achieving precise water injection and extending service life.
It enables precise adjustment of the water injection channel opening size, improves the accuracy of stratified water distribution, prevents backflow of dirt, and extends the service life of the equipment.
Smart Images
Figure CN223676233U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to water distributor technical field, concretely is a eccentric water distributor. BACKGROUND
[0002] Layered water injection is an important operation in oilfield recovery; eccentric water distributor is one of downhole tools for layered quantitative water injection according to different water absorption capacity of oil layers, and has been widely applied in layered testing and layered water injection field; water injection is the most important oilfield development method, and is the most widely used measure in improving oil production speed and recovery ratio; water injection is to inject water into strata through water injection well to displace underground crude oil to production well to increase the recovery ratio of primary oil production; injected water can play the dual role of displacing crude oil and supplementing stratum energy, and more crude oil can be produced from oil well through water injection displacement.
[0003] The existing eccentric water distributor is prone to backflow of dirt into the pipe column when the water injection pressure is less than the stratum pressure, the water distributor equipment can be damaged due to stratum water return, the service life is short, and the opening size of the water injection channel of the eccentric water distributor is a fixed structure, fine water injection cannot be realized, and the layered water distribution precision needs to be improved. SUMMARY
[0004] The utility model discloses a eccentric water distributor to solve the problem in the above -mentioned background art.
[0005] To achieve the above object, the utility model provides the following technical scheme: a eccentric water distributor, including upper joint, lower joint and outer protection cylinder, the inside of outer protection cylinder is provided with eccentric groove, and the inside of eccentric groove is installed with electric jar, one end of electric jar is installed with drive arm, one end of drive arm is installed with conical adjusting head, the inside of outer protection cylinder is provided with conical groove, the lower of conical adjusting head is provided with anti-return valve.
[0006] One side of the lower joint is provided with a water outlet.
[0007] The upper end of the anti-return valve is provided with an upper valve seat, and the upper valve seat is provided with a water injection hole.
[0008] The lower end of the anti-return valve is provided with a lower valve seat, and the lower valve seat is provided with a water outlet hole, and the water outlet hole is provided with four groups.
[0009] The inside of the anti-return valve is provided with a valve ball, and the valve ball is located between the upper valve seat and the lower valve seat.
[0010] The inside of the outer protection cylinder is provided with a water injection port, and the water injection port is in communication with the conical groove.
[0011] The electric cylinder comprises a push rod, and the driving arm is fixedly connected with the push rod of the electric cylinder through a shaft coupling.
[0012] The water injection channel is arranged between the conical groove and the conical adjusting head.
[0013] Compared with the prior art, the utility model has the advantages that:
[0014] The water injection channel is arranged between the conical groove and the conical adjusting head, the opening size of the water injection channel is related to the position of the conical adjusting head, the working position of the conical adjusting head is controlled and adjusted by controlling the telescopic stroke of the electric cylinder, the opening size of the water injection channel is adjusted in this way, the adjustment mode is simple and the adjustment precision is high, the opening size of the water injection channel can be adjusted according to the water injection requirement, fine water injection of the eccentric water distributor is realized, and the layering water distribution precision of the eccentric water distributor is improved.
[0015] The utility model discloses a prevent the dirty backflow into the pipe column through the anti-backflow valve, avoid the water distributor equipment to be damaged because of the formation water backflow, prolong the service life of the water distributor and water distribution equipment. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is the structure schematic diagram of the utility model;
[0017] Figure 2 It is Figure 1 It is the local enlarged view of A area in the middle;
[0018] Figure 3 It is the working principle diagram of the conical adjusting head of the utility model;
[0019] Figure 4 It is the overhead view structure schematic diagram of the anti-backflow valve of the utility model;
[0020] Figure 5 It is the overhead view structure schematic diagram of the anti-backflow valve of the utility model.
[0021] In the drawing: 1, upper joint;2, lower joint;3, outer protection cylinder;4, electric cylinder;5, driving arm;6, conical adjusting head;7, conical groove;8, anti-backflow valve;9, water outlet;10, upper valve seat;11, water injection hole;12, lower valve seat;13, water outlet hole;14, valve ball;15, water injection port. DETAILED DESCRIPTION
[0022] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0023] Please refer to Figures 1-5 The utility model provides a kind of eccentric water distributor, including upper joint 1, lower joint 2 and outer casing 3, the inside of outer casing 3 is provided with eccentric groove, and eccentric groove is equipped with electric cylinder 4 in its inside, one end of electric cylinder 4 is equipped with driving arm 5, one end of driving arm 5 is equipped with conical adjusting head 6, the inside of outer casing 3 is provided with conical groove 7, the lower portion of conical adjusting head 6 is provided with anti-return valve 8, electric cylinder 4 works and pushes driving arm 5, conical adjusting head 6 is moved relative to conical groove 7 by driving arm 5 and pushes conical adjusting head 6, water injection channel is provided between conical groove 7 and conical adjusting head 6, the opening size of this water injection channel is related with the position of conical adjusting head 6, by controlling the telescopic stroke of electric cylinder 4, the working position of conical adjusting head 6 is controlled and adjusted, to adjust the opening size of water injection channel, and the adjustment mode is simple and the adjustment precision is high, can adjust the opening size of water injection channel according to water injection demand, realize the fine water injection of eccentric water distributor, and then improve the layering water distribution precision of eccentric water distributor.
[0024] Among them, upper joint 1 is fixed between thread and outer casing 3, lower joint 2 is fixed between thread and outer casing 3.
[0025] Among them, the side of lower joint 2 is provided with water outlet 9, and the injected water is finally discharged through water outlet 9, and water injection is completed.
[0026] Among them, the upper end of the inside of anti-return valve 8 is equipped with upper valve seat 10, and water injection hole 11 is provided on upper valve seat 10, and the injected water enters the inside of anti-return valve 8 through water injection hole 11 of upper valve seat 10.
[0027] Among them, the lower end of the inside of anti-return valve 8 is equipped with lower valve seat 12, and water outlet hole 13 is provided on lower valve seat 12, and water outlet hole 13 is provided with four groups, and the injected water is discharged through four groups of water outlet hole 13 of lower valve seat 12.
[0028] Among them, the inside of anti-return valve 8 is provided with valve ball 14, and valve ball 14 is located between upper valve seat 10 and lower valve seat 12, and valve ball 14 can float up and down under the action of pressure.
[0029] Wherein, when the water injection pressure is greater than the formation pressure, the valve ball 14 is pushed open, the water flows into the water injection hole 11 of the upper valve seat 10, and then flows out through the four groups of water outlet holes 13 of the lower valve seat 12, forming a passage, when the formation pressure is greater than the water injection pressure, the valve ball 14 of the anti-return valve 8 is embedded in the inside of the upper valve seat 10 to form a seal under the driving of water and pressure difference, so as to achieve the purpose of preventing return.
[0030] Wherein, the anti-return valve 8 prevents the dirt from flowing back into the pipe string, avoids the damage of the water distributor equipment caused by the formation water return, and prolongs the service life of the water distributor and the water distribution equipment.
[0031] Wherein, the inside of the outer protection cylinder 3 is provided with a water injection port 15, and the water injection port 15 is communicated with the conical groove 7, and the conical groove 7 is provided with a water injection channel between the conical adjusting head 6, the injected water enters through the water injection port 15 and is discharged through the water injection channel.
[0032] Wherein, the electric cylinder 4 includes a push rod, the driving arm 5 and the push rod of the electric cylinder 4 are fixedly connected through a shaft coupling, the connection mode is simple, the electric cylinder 4 works to push the push rod, the push rod pushes the driving arm 5, and the driving arm 5 pushes the conical adjusting head 6, so that the conical adjusting head 6 moves relative to the conical groove 7.
[0033] Wherein, the conical groove 7 and the conical adjusting head 6 are provided with a water injection channel, and the opening size of the water injection channel is related to the position of the conical adjusting head 6.
[0034] Working principle: in use, the conical groove 7 and the conical adjusting head 6 are provided with a water injection channel, the working position of the conical adjusting head 6 is controlled and adjusted by controlling the extension stroke of the electric cylinder 4, so as to adjust the opening size of the water injection channel, the electric cylinder 4 works to push the push rod, the push rod pushes the driving arm 5, the driving arm 5 pushes the conical adjusting head 6, so that the conical adjusting head 6 moves relative to the conical groove 7, the opening size of the water injection channel is adjusted according to the water injection requirement, the fine water injection of the eccentric water distributor is realized, the injected water enters through the water injection port 15, is discharged through the water injection channel and the anti-return valve 8, and is finally discharged through the water outlet 9, the water injection is completed, when the water injection pressure is greater than the formation pressure, the valve ball 14 of the anti-return valve 8 is pushed open, the water flows into the water injection hole 11 of the upper valve seat 10, and then flows out through the four groups of water outlet holes 13 of the lower valve seat 12, forming a passage, when the formation pressure is greater than the water injection pressure, the valve ball 14 of the anti-return valve 8 is embedded in the inside of the upper valve seat 10 to form a seal under the driving of water and pressure difference, so as to achieve the purpose of preventing return.
[0035] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. An eccentric water distributor comprising an upper joint (1), a lower joint (2) and an outer casing (3), characterized in that: The outer sleeve (3) is internally provided with an eccentric groove, and an electric cylinder (4) is installed in the eccentric groove, one end of the electric cylinder (4) is provided with a driving arm (5), one end of the driving arm (5) is provided with a conical adjusting head (6), the inner part of the outer sleeve (3) is provided with a conical groove (7), and a backflow prevention valve (8) is arranged below the conical adjusting head (6).
2. An eccentric water distributor according to claim 1, characterized in that: One side of the lower joint (2) is provided with a water outlet (9).
3. An eccentric water distributor according to claim 1, characterized in that: An upper valve seat (10) is installed at the upper end of the backflow prevention valve (8), and a water injection hole (11) is arranged on the upper valve seat (10).
4. An eccentric distributor according to claim 3, characterised in that: A lower valve seat (12) is installed at the lower end of the backflow prevention valve (8), a water outlet hole (13) is arranged on the lower valve seat (12), and the water outlet hole (13) is provided with four groups.
5. An eccentric distributor according to claim 4, characterised in that: A valve ball (14) is arranged in the backflow prevention valve (8), and the valve ball (14) is located between the upper valve seat (10) and the lower valve seat (12).
6. An eccentric distributor according to claim 1, characterized in that: The inner part of the outer sleeve (3) is provided with a water injection hole (15), and the water injection hole (15) is communicated with the conical groove (7).
7. An eccentric water distributor according to claim 1, characterized in that: The electric cylinder (4) comprises a push rod, and the driving arm (5) and the push rod of the electric cylinder (4) are fixedly connected through a shaft coupling.
8. An eccentric distributor according to claim 1, characterized in that: A water injection channel is arranged between the conical groove (7) and the conical adjusting head (6).