CN206554869U - Salvagable well-flushing bottom sieve is blocked up - Google Patents
Salvagable well-flushing bottom sieve is blocked up Download PDFInfo
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- CN206554869U CN206554869U CN201620970900.3U CN201620970900U CN206554869U CN 206554869 U CN206554869 U CN 206554869U CN 201620970900 U CN201620970900 U CN 201620970900U CN 206554869 U CN206554869 U CN 206554869U
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- well
- flushing
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- blanking plug
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Abstract
The utility model is related to a kind of well washing apparatus, and specially a kind of salvagable well-flushing bottom sieve is blocked up, including top connection, upper connecting cylinder, main body, lower contact and the plug being sequentially connected, and is provided with blanking plug main body in main body, blanking plug main body upper end is connected with bed washer.The utility model uses said structure, can be stifled according to pulling or put at any time well-flushing bottom sieve the need for test well-flushing out, the need for meeting water filling.Removed during operation in company with water injection string one in well, due to the blocked device closure of tubing string afterbody, polymer, profile control solution in lower oil pipe in sleeve pipe, loose sand particles do not enter in oil pipe, it is ensured that TCH test channel is unimpeded in oil pipe.Well-flushing is needed to pull blanking plug out with special fishing tool, open wide the normal well-flushing of well-flushing passage, lost after well-flushing from well head into blanking plug, blanking plug is under self gravitation effect and under the collective effect of water filling hydraulic pressure, directly it is seated in throw-in type well-cleanout bottom screen packer seating nipple, waterflood path is blocked, water injection well just can normally water filling.
Description
Technical field
The utility model is related to a kind of well washing apparatus, and specially a kind of salvagable well-flushing bottom sieve is blocked up.
Background technology
At present, eccentric injection mandrel tubing string sealed bottom, is to seal water injection string using bottom well-flushing valve, and it is solid
Be scheduled on water injection string bottom, with water injection string in operation G.I.H.Effect of the valve ball in water injection pressure during normal water filling
Under, valve ball, which is sitting in valve ball seat, seals waterflood path, meets injection water and enters from the inclined hole plug device fluid hole of eccentric injection mandrel
The need for entering bottom, if necessary to anti-flushing well, injection water, through packer backwash passage to bottom single current valve, injects water from sleeve pipe
Push valve ball open and complete well-flushing into return ground in oil pipe.But deepened continuously with the exploitation in oil field, polymer injection
Promoting the use of a large area for well is allocated in well, water filling, also injects water and the cement in stratum is washed away for a long time, the rock in stratum
Stone particle becomes loose, at the same because difference between reservoir pre ssure and injection pressure is big, if flood pattern changes, polymer, seasoning liquid, loose rock
Particle just enters in oil pipe from the single current valve of bottom, blocks TCH test channel, influences proper testing.Although also having at present using fixed
Well-flushing valve, level pressure well-flushing valve in use, is differed between well and well, and the water filling of some well stratum starts pressure
Very low, the big well-flushing water of pressure that opens of setting is put into less than in oil pipe, and well-flushing water is filled with stratum, does not reach the mesh of well-flushing
, can only more wash that the face that is hampered is higher, the small purpose for just not having level pressure of Opening pressure.Pass through well-flushing if there is such situation
It is difficult to remove to be, only upper operation cleaning tubing string, the maintenance cost expenditure of well is added, while influenceing the production of correspondence oil well
Amount.
Utility model content
The technical problems to be solved in the utility model is：In separated-zone water infection oil field pipe note technique, bottom well-flushing single current valve
Because of water injection pressure change, caused by polymer, seasoning liquid, loose rock particles enter oil pipe from the single current valve of bottom
It is interior, TCH test channel is blocked, proper testing is influenceed, blocked up to solve the above problems, providing a kind of salvagable well-flushing bottom sieve.
The purpose of this utility model is realized in the following manner：
Salvagable well-flushing bottom sieve is blocked up, including top connection, upper connecting cylinder, main body, lower contact and the plug being sequentially connected, main body
Blanking plug main body is inside provided with, blanking plug main body upper end is connected with bed washer.
The central through hole for being provided centrally with coordinating with blanking plug of main body, is evenly equipped with axially disposed water excessively in main body
Hole I.
Bed washer is provided centrally with through hole, and the upper end of through hole is provided with the big conical surface.
Bed washer is T fonts, and water hole II is evenly equipped with the big conical surface of bed washer upper end.
Relative to prior art, the utility model uses said structure, can according to test well-flushing the need for pull out at any time or
Person's input well-flushing bottom sieve is blocked up, the need for meeting water filling.Former eccentric water injection tubing string bottom well-flushing single current valve there is into fixed be changed to
Dropping in and taking off type stopper type structure.Removed during operation in company with water injection string one in well, due to the blocked device closure of tubing string afterbody,
Polymer, profile control solution in lower oil pipe in sleeve pipe, loose sand particles do not enter in oil pipe, it is ensured that test is logical in oil pipe
Road is unimpeded.Blanking plug can be pulled out if necessary to well-flushing with special fishing tool, opened wide after the normal well-flushing of well-flushing passage, well-flushing
Lost from well head into blanking plug, blanking plug is under self gravitation effect and under the collective effect of water filling hydraulic pressure, and being directly seated in can pulling
Formula well-flushing bottom sieve is blocked up in seating nipple, blocks waterflood path, water injection well just can normally water filling.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is bed washer structural representation.
Fig. 3 is Fig. 2A-A sectional views.
Wherein, 1 is top connection；2 be upper connecting cylinder；3 be main body；4 be lower connecting cylinder；5 be lower contact；6 be plug；7 are
Blanking plug main body；8 be bed washer；9 be blanking plug；10 be water hole II；11 be water hole I.
Embodiment
As shown in Figure 1-Figure 3, salvagable well-flushing bottom sieve block up, including be sequentially connected top connection 1, upper connecting cylinder 2, main body 3,
Blanking plug main body 7 is provided with lower contact 5 and plug 6, main body 3, the upper end of blanking plug main body 7 is connected with bed washer 8.
The central through hole for being provided centrally with coordinating with blanking plug 9 of main body 3, becomes big in the mid diameter of central through hole and is formed
The cooperation positioning hole coordinated with blanking plug, is evenly equipped with axially disposed water hole I 11 in main body 3, makes connecting cylinder 3 with
Connecting cylinder 4 is connected.
Bed washer 8 is provided centrally with through hole, is provided with the upper end of through hole on the big conical surface, the big conical surface and is evenly equipped with water hole II
10, as shown in Figure 2 and Figure 3.Bed washer 8 is T fonts.Blanking plug 9 passes through bed washer 8, blanking plug main body 7, is inserted in the center of main body 3
In through hole.The outside dimension of bed washer 8 is approached with the upper internal diameter size of connecting tube 2, has the big conical surface, Neng Goubang in the upper end of bed washer 8
Blanking plug is helped smoothly to enter during decentralization is set in main body 3.
Above-described is only preferred embodiment of the present utility model, it is noted that for those skilled in the art
For, under the premise of the utility model general idea is not departed from, some changes and improvements can also be made, these should also be considered as
Protection domain of the present utility model.
Claims (2)
1. salvagable well-flushing bottom sieve is blocked up, it is characterised in that：Including the top connection being sequentially connected, upper connecting cylinder, main body, lower contact and
Blanking plug main body is provided with plug, main body, blanking plug main body upper end is connected with bed washer, and bed washer is provided centrally with through hole,
The big conical surface is provided with the upper end of through hole, bed washer is T fonts, and water hole II is evenly equipped with the big conical surface of bed washer upper end.
2. salvagable well-flushing bottom sieve according to claim 1 is blocked up, it is characterised in that：Main body is provided centrally with and blanking plug
The central through hole of cooperation, is evenly equipped with axially disposed water hole I in main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620970900.3U CN206554869U (en) | 2016-08-27 | 2016-08-27 | Salvagable well-flushing bottom sieve is blocked up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620970900.3U CN206554869U (en) | 2016-08-27 | 2016-08-27 | Salvagable well-flushing bottom sieve is blocked up |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206554869U true CN206554869U (en) | 2017-10-13 |
Family
ID=60368129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620970900.3U Active CN206554869U (en) | 2016-08-27 | 2016-08-27 | Salvagable well-flushing bottom sieve is blocked up |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206554869U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043214A (en) * | 2019-04-19 | 2019-07-23 | 李眉博 | A kind of tubing plug |
-
2016
- 2016-08-27 CN CN201620970900.3U patent/CN206554869U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043214A (en) * | 2019-04-19 | 2019-07-23 | 李眉博 | A kind of tubing plug |
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