CN203257374U - Leakproof structure of adjustable blanking plug in eccentric water distributor - Google Patents
Leakproof structure of adjustable blanking plug in eccentric water distributor Download PDFInfo
- Publication number
- CN203257374U CN203257374U CN 201320249659 CN201320249659U CN203257374U CN 203257374 U CN203257374 U CN 203257374U CN 201320249659 CN201320249659 CN 201320249659 CN 201320249659 U CN201320249659 U CN 201320249659U CN 203257374 U CN203257374 U CN 203257374U
- Authority
- CN
- China
- Prior art keywords
- blanking plug
- filter cap
- valve pocket
- valve
- valve rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a leakproof structure of an adjustable blanking plug in an eccentric water distributor. The leakproof structure of the adjustable blanking plug in the eccentric water distributor comprises the eccentric water distributor, a water inlet opening A is formed in the eccentric water distributor, a water outlet opening B is formed in the middle portion of the water inlet opening A, a valve bush is arranged in the water inlet opening A, a water nozzle is arranged on the valve bush at the position corresponding to the water outlet opening B, a valve rod is arranged in the valve bush, the valve rod and the water nozzle are in clearance fit, and a filter cap is arranged at one end of the valve bush. A valve bush sealing piece is arranged at the matching part of one end of the valve bush and the valve rod, and a filter cap sealing piece is arranged at the matching part of one end of the valve rod and the filter cap. The bore of the water nozzle can be adjusted to be the minimum before the leakproof structure of the adjustable blanking plug in the eccentric water distributor is put into a well, and the swelling leakproof requirement of the blanking plug is met. After the blanking plug is sealed in a swelling mode, an adjustment device is put into the well directly to adjust flow, and the blanking plug does not need to be replaced. The purchase expanse of holeless blanking plugs is saved, the time of replacing the blanking plug is saved, the work efficiency of an oil field can be improved effectively, and production cost is reduced.
Description
Technical field
The utility model relates to the hermetically-sealed construction of adjustable blanking plug in a kind of eccentric injection mandrel, particularly is arranged on the hermetically-sealed construction of the adjustable blanking plug in the eccentric injection mandrel of water injection well in oil fields, belongs to oil field blanking plug technical field.
Background technology
The packer majority that uses in water injection well in oil fields now is the pressurization envelope formula that rises.Need to add internally hydraulic pressure after every subjob, utilize inside and outside differential pressure to make the packer envelope that rises, realize predetermined function.This just needs can seal fully between the water outlet B of injection well downhole flow regulator 9 and water inlet A.But existing adjustable blanking plug in order to realize flow regulating function, adopts matched in clearance between valve rod 4 and water nozzle 5, also has micro-Seepage after being adjusted to lowest calibre.Cause can not sealing fully between the water outlet B of injection well downhole flow regulator 9 and water inlet A, the packer inside and outside differential pressure does not reach predetermined value, and the packer envelope that can not reliably rise affects the realization of predetermined function.For fear of this phenomenon occurring, nonadjustable atresia blanking plug can only be first used in the oil field when operation, treats that packer rises to be honored as a queen to be replaced by adjustable blanking plug again.The workload in oil field and the expense of buying atresia blanking plug have been increased.
Summary of the invention
The purpose of this utility model is, the hermetically-sealed construction of adjustable blanking plug in a kind of eccentric injection mandrel is provided, and can reduce the workload that blanking plug is changed in the oil field, saves the expense of buying atresia blanking plug.To overcome the deficiencies in the prior art.
The technical solution of the utility model:
In a kind of eccentric injection mandrel of the present utility model, the hermetically-sealed construction of adjustable blanking plug is, this structure comprises eccentric injection mandrel, and eccentric injection mandrel is provided with inlet opening A, is provided with weep hole B in the middle part of the A of inlet opening; Be provided with valve pocket in the A of inlet opening, valve pocket and weep hole B correspondence position are provided with water nozzle, are provided with valve rod in valve pocket, are matched in clearance between valve rod and water nozzle; Valve pocket one end is provided with filter cap; The cooperation place of described valve pocket one end and valve rod is provided with the valve pocket seal; The cooperation place of valve rod one end and filter cap is provided with the filter cap seal.
In aforementioned structure, described filter cap is threaded with valve pocket.
In aforementioned structure, described valve pocket seal and filter cap seal are the self sealss cushion rubber.
In aforementioned structure, the decrement of described self sealss cushion rubber is less than 25%.
In aforementioned structure, the decrement of described self sealss cushion rubber is less than 15%.
In aforementioned structure, be respectively equipped with sealing ring between described valve pocket and filter cap and inlet opening A; Be provided with thread seal spare between filter cap and valve pocket.
Compared with prior art, the utility model can first transfer to minimum with the water nozzle bore before going into the well, and satisfies the packer envelope requirement of rising.Treat that packer rises and be honored as a queen, directly be lowered to water-quantity regulating device and carry out Flow-rate adjustment, need not change blanking plug.Saved the expense of buying the atresia blanking plug, saved simultaneously the time of changing blanking plug, can effectively improve field operations efficient, reduced production costs.
Description of drawings
Fig. 1 is structural representation of the present utility model (sealing state);
Fig. 2 is structural representation of the present utility model (non-tight state);
Fig. 3 is the structural representation of prior art.
Being labeled as in accompanying drawing: 1-valve pocket seal, 2-valve pocket, 3-sealing ring, 4-valve rod, 5-water nozzle, 6-filter cap seal, 7-filter cap, 8-thread seal spare, 9-eccentric injection mandrel.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing, but not as to any restriction of the present utility model.
Fig. 3 is the structural representation of prior art, does not establish valve pocket seal 1 and filter cap seal 6 in Fig. 3, and owing to being matched in clearance between valve rod 4 and water nozzle 5, also there is micro-Seepage in valve rod after being adjusted to the end.Cause can not sealing fully between the weep hole B of eccentric injection mandrel 9 and inlet opening A, the packer inside and outside differential pressure does not reach predetermined value, and the packer envelope that can not reliably rise affects the realization of predetermined function.
The utility model is constructed according to the encapsulating method of adjustable blanking plug in following a kind of eccentric injection mandrel, as depicted in figs. 1 and 2, the method is to set up seal at valve rod two ends, to realize sealing fully between eccentric injection mandrel weep hole B and inlet opening A, satisfies the envelope requirement of rising of packer; The seal of valve rod one end passes through the groove positioning sleeve of valve pocket on valve rod; The seal of the valve rod other end withstands on the water nozzle end face of valve rod by the groove location of filter cap.Described seal adopts the self sealss cushion rubber, and when the eccentric injection mandrel internal pressure increased, the contact between self sealss cushion rubber and valve rod also increased thereupon, to guarantee sealing reliability; When the eccentric injection mandrel internal pressure reduced, the contact between self sealss cushion rubber and valve rod also reduced thereupon, damaged seal when moving to prevent that valve rod from coming and going.The decrement of described self sealss cushion rubber need be controlled at below 25%, relies on packer to suppress the high speed impact pressure that rises when sealing and realizes self sealss.The decrement of described self sealss cushion rubber need be controlled at below 15%, relies on packer to suppress the high speed impact pressure that rises when sealing and realizes self sealss.
In the eccentric injection mandrel of the present utility model that builds according to said method the schematic diagram of the hermetically-sealed construction of adjustable blanking plug as depicted in figs. 1 and 2, this structure comprises eccentric injection mandrel 9, eccentric injection mandrel 9 is provided with inlet opening A, inlet opening A middle part is provided with weep hole B; Be provided with valve pocket 2 in the A of inlet opening, valve pocket 2 is provided with water nozzle 5 with weep hole B correspondence position, is provided with valve rod 4 in valve pocket 2, is matched in clearance between valve rod 4 and water nozzle 5; Valve pocket 2 one ends are provided with filter cap 7; Filter cap 7 is threaded with valve pocket 2.The cooperation place of valve pocket 2 one ends and valve rod 4 is provided with valve pocket seal 1; The cooperation place of valve rod 4 one ends and filter cap 7 is provided with filter cap seal 6.Valve pocket seal 1 and filter cap seal 6 are the self sealss cushion rubber.The decrement of self sealss cushion rubber is less than 25%.The optimal compression amount of self sealss cushion rubber is less than 15%.Be respectively equipped with sealing ring 3 between described valve pocket 2 and filter cap 7 and inlet opening A; Be provided with thread seal spare 8 between filter cap 7 and valve pocket 2.
Structural representation when Fig. 2 is the utility model non-tight state, as seen from Figure 2, in figure, filter cap seal 6 is left in the left side of valve rod 4, and filter cap seal 6 is in the non-tight state, and the water of inlet opening A can flow out from weep hole B by filter cap 7 and water nozzle 5.Movement by valve rod 4 can regulating water flow.
Structural representation when Fig. 1 is the utility model sealing state, as seen from Figure 1, in figure, the left end of valve rod 4 is through in filter cap seal 6, and filter cap seal 6 is in sealing state, and the water of inlet opening A cannot flow out from weep hole B by filter cap 7 and water nozzle 5.Realize sealing fully between eccentric injection mandrel weep hole B and inlet opening A, can satisfy the envelope requirement of rising of packer.
Embodiment
During concrete enforcement, the patent No. that can apply on September 16th, 2003 the patentee is to improve on the basis of " a kind of blanking plug " of ZL03135863.2.Also can completely newly make.Processing is used for the groove of location self sealss cushion rubber on valve pocket 2 and filter cap 7, the valve rod 4 of packing into after the groove inner sleeve upper valve sleeve seal 1 of valve pocket 2, and then the water nozzle 5 of packing into, the patent No. that water nozzle 5 can be applied on December 3rd, 2008 by the patentee is that " water faucet for adjustable plugging device " of ZL200810305926.6 processed.After in the groove of filter screen 7, filter cap seal 6 being installed, filter cap 7 is screwed in valve pocket 2.
For reducing difficulty of processing, the patent No. that valve pocket 2 can be applied on December 3rd, 2008 by the patentee is that " Split adjustable packer casing " of ZL200820303070.4 carries out parts processing.For preventing that valve rod 4 from coming and going mobile valve pocket seal 1 and the filter cap seal 6 of damaging, the decrement of valve pocket seal 1 and filter cap seal 6 need be controlled at below 25%, preferably is controlled at below 15%, relies on the high speed pressure of suppressing when rising by envelope to impact and realizes self sealss in addition.
Claims (6)
1. the hermetically-sealed construction of the interior adjustable blanking plug of eccentric injection mandrel, comprise eccentric injection mandrel (9), and eccentric injection mandrel (9) is provided with inlet opening A, is provided with weep hole B in the middle part of the A of inlet opening; Be provided with valve pocket (2) in the A of inlet opening, valve pocket (2) is provided with water nozzle (5) with weep hole B correspondence position, is provided with valve rod (4) in valve pocket (2), is matched in clearance between valve rod (4) and water nozzle (5); Valve pocket (2) one ends are provided with filter cap (7); It is characterized in that: the cooperation place of described valve pocket (2) one ends and valve rod (4) is provided with valve pocket seal (1); The cooperation place of valve rod (4) one ends and filter cap (7) is provided with filter cap seal (6).
2. the hermetically-sealed construction of adjustable blanking plug in eccentric injection mandrel according to claim 1, it is characterized in that: described filter cap (7) is threaded with valve pocket (2).
3. the hermetically-sealed construction of adjustable blanking plug in eccentric injection mandrel according to claim 1, it is characterized in that: described valve pocket seal (1) and filter cap seal (6) are the self sealss cushion rubber.
4. the hermetically-sealed construction of adjustable blanking plug in eccentric injection mandrel according to claim 3, it is characterized in that: the decrement of described self sealss cushion rubber is less than 25%.
5. the hermetically-sealed construction of adjustable blanking plug in eccentric injection mandrel according to claim 4, it is characterized in that: the decrement of described self sealss cushion rubber is less than 15%.
6. the hermetically-sealed construction of adjustable blanking plug in eccentric injection mandrel according to claim 1, is characterized in that: be respectively equipped with sealing ring (3) between described valve pocket (2) and filter cap (7) and inlet opening A; Be provided with thread seal spare (8) between filter cap (7) and valve pocket (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320249659 CN203257374U (en) | 2013-05-10 | 2013-05-10 | Leakproof structure of adjustable blanking plug in eccentric water distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320249659 CN203257374U (en) | 2013-05-10 | 2013-05-10 | Leakproof structure of adjustable blanking plug in eccentric water distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203257374U true CN203257374U (en) | 2013-10-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320249659 Expired - Lifetime CN203257374U (en) | 2013-05-10 | 2013-05-10 | Leakproof structure of adjustable blanking plug in eccentric water distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203257374U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141471A (en) * | 2013-05-10 | 2014-11-12 | 贵州航天凯山石油仪器有限公司 | Sealing method for adjustable blanking plug in eccentric water distributor and sealing structure of adjustable blanking plug in eccentric water distributor |
-
2013
- 2013-05-10 CN CN 201320249659 patent/CN203257374U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141471A (en) * | 2013-05-10 | 2014-11-12 | 贵州航天凯山石油仪器有限公司 | Sealing method for adjustable blanking plug in eccentric water distributor and sealing structure of adjustable blanking plug in eccentric water distributor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131030 |
|
| CX01 | Expiry of patent term |