CN205172538U - Water injection well is water injection mandrel in pit - Google Patents
Water injection well is water injection mandrel in pit Download PDFInfo
- Publication number
- CN205172538U CN205172538U CN201520823986.2U CN201520823986U CN205172538U CN 205172538 U CN205172538 U CN 205172538U CN 201520823986 U CN201520823986 U CN 201520823986U CN 205172538 U CN205172538 U CN 205172538U
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- seating nipple
- delivery port
- water injection
- water
- sliding sleeve
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model relates to a water injection well is water injection mandrel in pit belongs to oil industry waterflood development kit technical field in the pit. By top connection, seating nipple, eccentric water distribution device and joint down, it has the delivery port to open on the seating nipple, setting -up eccentricity water distribution device in the cavity of the corresponding seating nipple of delivery port, and the delivery port on the seating nipple and the seating nipple outer tube wall mounting of the upper and lower both sides of throttle spring have the ring of keeping off, and the cover is equipped with sliding sleeve and throttle spring in proper order on two seating nipples that keep off between the ring. Novel whole tool design is passed through the sliding sleeve and is realized throttling in advance with the throttle spring, and throttle pressure differential is adjustable, change water distribution device water injection well choke through conventional measure and regulate technology, realize the second grade throttle, satisfy the allotment on the poor well low pressure layer of high pressure. Simultaneously, when stopping annotating, the sliding sleeve is closed under throttle spring and oil pipe internal -external differential pressure effect, realizes preventing the anti - purpose of telling in stratum.
Description
Technical field
The utility model relates to a kind of water injection well downhole water flow regulator, belongs to petroleum industry waterflooding extraction down-hole kit technical field.
Background technology
In oilfield development process, packer is entered under usually in water injection well, the oil reservoir differed greatly is separated, layering water distribution is carried out again with eccentric type, fixed or open-core type injection well downhole flow regulator, high permeability formation water injection rate is controlled, middle-low permeability oil-bearing stratum flooding amount is strengthened, and all kinds of oil reservoir can play a role.Existing injection well downhole flow regulator is made up of top connection, seating nipple and lower contact, and seating nipple has delivery port, installs water dispensing apparatus in the cavity of the seating nipple that delivery port is corresponding.When needs adjustment water distribution, by entering the water nozzle size that corresponding instrument is changed or adjusted water dispensing apparatus under cable reel, regulate each layer water yield.At present in the process of application, fractional water flooding well high permeability formation and low-permeability layer interlayer pressure difference are too large, and the maximum chock pressure difference of minimum water nozzle of application is 8MPa, and easily blocking thorn is bad, cannot realize allotment more than 8MPa; Meanwhile, when water injection well stops note, the delivery port on seating nipple and oil jacket annular space are in connected state, to cause in well liquid by middle low-permeability layer to high permeability formation channelling, cause injection water to circulate in down-hole, even shake out to bring hidden danger safely to tubing string.
Utility model content
The purpose of this utility model is the problem of easily altering mutually between oil reservoir when the chock pressure difference of injection well downhole flow regulator in order to overcome above-mentioned prior art is little, water injection well stops noting, and designs a kind of water injection well downhole water flow regulator.
The utility model is made up of top connection, seating nipple, eccentric center water-distributing device and lower contact, seating nipple has delivery port, setting-up eccentricity water dispensing apparatus in the cavity of the seating nipple that delivery port is corresponding, the seating nipple outer tube wall of the delivery port on seating nipple and the upper and lower both sides of throttling spring is provided with baffle ring, the seating nipple between two baffle rings is set with successively sliding sleeve and throttling spring.
The design of the utility model solid tool realizes pre-throttling by sliding sleeve and throttling spring, and chock pressure difference is adjustable; By conventional commissioning process, water dispensing apparatus water nozzle is changed, realize two-step throttle, meet the allotment of High Pressure Difference well low pressure layer., when stopping note, close under sliding over throttling spring and the effect of oil pipe inside and outside differential pressure meanwhile, realize preventing the anti-object of telling in stratum.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
As shown in Figure 1: the utility model is made up of top connection 1, seating nipple 6, eccentric center water-distributing device 3 and lower contact 2, seating nipple 6 has delivery port 7, setting-up eccentricity water dispensing apparatus 3 in the cavity of the seating nipple 6 that delivery port 7 is corresponding, seating nipple 6 outer tube wall of the delivery port 7 on seating nipple 6 and the upper and lower both sides of throttling spring 4 is provided with baffle ring 81,82, the seating nipple 6 between two baffle rings 81,82 is set with successively sliding sleeve 5 and throttling spring 4.
Described seating nipple 6 comprises seating nipple and lower seating nipple, connecting, connection short circuit having delivery port 7, the inner tubal wall of the connection short circuit corresponding with delivery port 7 is provided with eccentric center water-distributing device 3 by connecting short circuit; The screw thread of two ends up and down connecting short circuit is provided with baffle ring 81,82, the connection short circuit between two baffle rings 81,82 is set with successively sliding sleeve 5 and throttling spring 4.
All joint ring is installed between the connection short circuit of delivery port about 7 both sides of described connection short circuit and the bonding surface of sliding sleeve 5.
During construction, first by the anticipation to water injection pressure, the opening pressure of adjustment throttling spring 4, then connects down on oil pipe string with packing device by the utility model.During work, after injection water carries out throttling by eccentric center water-distributing device 3 and compression throttling spring 4 pairs of low pressure layers, promote sliding sleeve 5 descending, open the delivery port 7 on seating nipple 6, make injection water enter stratum; When stopping note, under the effect of throttling spring 4, promote sliding sleeve 5 up, close the delivery port 7 on seating nipple 6, to avoid in well liquid by middle low-permeability layer to high permeability formation channelling, reach and prevent from injecting the anti-object of telling of water.
Claims (3)
1. a water injection well downhole water flow regulator, by top connection (1), seating nipple (6), eccentric center water-distributing device (3) and lower contact (2) composition, it is characterized in that: seating nipple (6) has delivery port (7), setting-up eccentricity water dispensing apparatus (3) in the cavity of the seating nipple (6) that delivery port (7) is corresponding, on delivery port (7) on seating nipple (6) and throttling spring (4), seating nipple (6) outer tube wall of lower both sides is provided with baffle ring (81, 82), at two baffle rings (81, 82) seating nipple (6) between is set with successively sliding sleeve (5) and throttling spring (4).
2. a kind of water injection well downhole water flow regulator according to claim 1, it is characterized in that: described seating nipple (6) comprises seating nipple and lower seating nipple, connect by connecting short circuit, connection short circuit has delivery port (7), the inner tubal wall of the connection short circuit corresponding with delivery port (7) is provided with eccentric center water-distributing device (3); The screw thread of two ends up and down connecting short circuit is provided with baffle ring (81,82), the connection short circuit between two baffle rings (81,82) is set with successively sliding sleeve (5) and throttling spring (4).
3. a kind of water injection well downhole water flow regulator according to claim 2, is characterized in that: be all provided with joint ring between the connection short circuit of the upper and lower both sides of delivery port (7) of described connection short circuit and the bonding surface of sliding sleeve (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520823986.2U CN205172538U (en) | 2015-10-23 | 2015-10-23 | Water injection well is water injection mandrel in pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520823986.2U CN205172538U (en) | 2015-10-23 | 2015-10-23 | Water injection well is water injection mandrel in pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205172538U true CN205172538U (en) | 2016-04-20 |
Family
ID=55736541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520823986.2U Active CN205172538U (en) | 2015-10-23 | 2015-10-23 | Water injection well is water injection mandrel in pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205172538U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113356811A (en) * | 2021-06-09 | 2021-09-07 | 门万龙 | Oil well is with joining in marriage notes ware in pit |
-
2015
- 2015-10-23 CN CN201520823986.2U patent/CN205172538U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113356811A (en) * | 2021-06-09 | 2021-09-07 | 门万龙 | Oil well is with joining in marriage notes ware in pit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |