CN201024997Y - A surrounding drug addition device for under-well eccentric and dragging bushing - Google Patents
A surrounding drug addition device for under-well eccentric and dragging bushing Download PDFInfo
- Publication number
- CN201024997Y CN201024997Y CNU200720103755XU CN200720103755U CN201024997Y CN 201024997 Y CN201024997 Y CN 201024997Y CN U200720103755X U CNU200720103755X U CN U200720103755XU CN 200720103755 U CN200720103755 U CN 200720103755U CN 201024997 Y CN201024997 Y CN 201024997Y
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- CN
- China
- Prior art keywords
- salvagable
- spool
- runddichtringo
- seating nipple
- hole
- 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 relates to an annulus hollow drug feeding device of centrifugal bushing which can be delivered and gained under well and is communicated with the oil covers under well, belonging to the field of oil exploitation. The utility model comprises a work cylinder(1), a retrievable valve spool assembly, and an O-shaped airproof ring(3). The inside of the work cylinder(1) can be provided with the retrievable valve spool assembly(2), the O-shaped airproof ring(3) is arranged between the work cylinder(1) and the retrievable valve spool assembly(2), thereby not only not influencing the testing of the oil well, but also not needing the well repairing works after the devices under well are abated; and the utility model can require the different craftwork requirements of the drug adding, blocking oil cover ring hollow and the oil cover communication under the well based on the different craftwork requirements.
Description
Technical field
The utility model belongs to the oilfield exploitation field, but overlaps a kind of down-hole off-centre pulling casing annulus chemicals dosing plant that is communicated with especially for the oil well downhole oil.
Background technology
In the oil extraction process; the oil of oil well output; gas; often contain a certain amount of paraffin in the water; carbon dioxide; hydrogen sulfide etc. can cause down-hole string to stop up; corrosion and poisonous and hazardous material; in order to eliminate the unfavorable shadow that these materials produce; common way is a certain amount of chemical agent of the injection in well; because the needs of protection oil well casing; generally be lowered to packer sleeve pipe with oil pipe separates and add a certain amount of annular space protection liquid in annular space in the down-hole; prevent the corrosion and damage of oil well casing; so just can't inject the down-hole to the functional agent that needs add by oil sets annular space, prevent the obstruction of paraffin in oil pipe; carbon dioxide or hydrogen sulfide are to corrosion of oil pipe etc.
In the prior art, an one way valve communication apparatus is installed on oil pipe, its deficiency is: 1, one way valve communication apparatus shutoff oil pipe passage, tester can't descend well operations.2, the one way valve sealing mechanism can't be changed after losing efficacy, and needed workover treatment in the time of changing, the big cost height of workload.3, function singleness can not satisfy the operation requirement under the different technology conditions.
Summary of the invention
The purpose of this utility model is to provide a kind of oil well test that do not influence, and does not need workover treatment after downhole hardware loses efficacy, but and can satisfy a kind of down-hole off-centre pulling casing annulus chemicals dosing plant that different technology conditions requires.
In order to achieve the above object, the technical scheme that the utility model adopted is:
Comprise seating nipple 1, salvagable Spool assembly 2, O RunddichtringO 3 are equipped with salvagable Spool assembly 2 in the seating nipple 1, are provided with O RunddichtringO 3 between seating nipple 1 and the salvagable Spool assembly 2.
Seating nipple 1 is provided with centre bore and eccentric orfice, and seating nipple 1 is made up of top connection 11, guide way 12, adapter sleeve 13, body 14, and top connection 11 is connected with adapter sleeve 13, and guide way 12 is installed in the adapter sleeve 13, is body 14 in the bottom of seating nipple 1.
Body 14 is provided with eccentric orfice.
Salvagable Spool assembly 2 is by locking member 27, salvagable spool body 28, O RunddichtringO 29, O RunddichtringO 32, back-moving spring 30, valve ball 31, valve seat pressure cap 33, ball seat 34, O RunddichtringO 35 are formed, locking member 27 is connected with salvagable spool body 28, between salvagable spool body 28 and the valve ball 31 back-moving spring 30 is housed, valve seat pressure cap 33 is connected with ball seat 34.
Be provided with O RunddichtringO 29 between locking member 27 and the salvagable spool body 28, be provided with O RunddichtringO 35 between salvagable spool body 28 and the ball seat 34, salvagable spool body 28 is provided with O RunddichtringO 32.
In the salvagable spool body 28 back-moving spring 30 is housed.
Valve ball 31 is seated on the ball seat 34.
The beneficial effects of the utility model are: not only do not influence oil well test, and after downhole hardware loses efficacy, do not need workover treatment, and the multiple different technological requirement that can be communicated with according to dosing, shutoff oil jacket annular space and the oil jacket of different technological requirement down-holes.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model seating nipple 1;
Fig. 3 is the structural representation of the utility model salvagable Spool assembly 2.
The specific embodiment
But down-hole off-centre pulling casing annulus chemicals dosing plant is made up of seating nipple and salvagable spool two parts, a centre bore and an eccentric orfice are arranged on the seating nipple, the vexed core of salvagable is thrown in the seating nipple eccentric orfice, seals with " O " type circle between salvagable spool and eccentric orfice; The salvagable spool is with conventional wire Launching and Bailing device input or pull out and do not need workover treatment, and centre bore can directly carry out downhole testing by the downhole testing instrument.
As shown in Figure 2, seating nipple 1 is made up of seating nipple top connection 11, seating nipple guide way 12, seating nipple adapter sleeve 13 and seating nipple body 14, on seating nipple body 14, have one fixedly the eccentric orfice of salvagable spool and one be used for the downhole testing instrument by and the centre bore of output liquid overcurrent, the eccentric orfice latch recess and the eccentric orfice that are useful on locking member 27 cooperations of salvagable spool on the eccentric orfice of seating nipple body 14 are crossed the water groove, eccentric orfice is crossed the through hole that an overcurrent is arranged between water groove and seating nipple 1 centre bore, in seating nipple 1 outside a feed liquor groove is arranged.
As shown in Figure 3, this is the dosing spool, locking member 27, and spool body 28, ' O ' RunddichtringO 29,32, back-moving spring 30, valve ball 31, valve seat pressure cap 33, ball seat 34, ball seat ' O ' RunddichtringO 35 have constituted the dosing spool; Back-moving spring in the dosing spool 30, valve ball 31, ball seat 34 taking-ups are replaced with the dead stifled shutoff spool that just constituted.Locking member 27 not only can lock with the eccentric orfice latch recess on the eccentric orfice of seating nipple 1, can also or pull out with general hanging throw in catcher input.
As shown in Figure 1,2 of salvagable Spool assemblies are in seating nipple 1 eccentric orfice, by the fit clearance of 2 of O RunddichtringO 3 seal operation tubes, 1 eccentric orfice and salvagable Spool assemblies.
Cam on the locking member 27 on the salvagable Spool assembly 2 is locked in seating nipple 1 eccentric orfice locking groove, fixing and locking salvagable Spool assembly 2.
When needing dosing, with the wire Launching and Bailing device salvagable Spool assembly 2 is devoted oneself to work in tube 1 the eccentric orfice, inject the chemical agent that need add from the oil jacket annular space, the oil jacket annular pressure back liquid that raises has a feed liquor groove to pass valve seat pressure cap 33 and ball seat 34 by seating nipple 1 outside to back down the eccentric orfice that valve ball 31 enters seating nipple 1 and cross the water groove, and then pass through through hole, enter centre bore and mix, realize the down-hole dosing with output liquid.Also can from the eccentric orfice of seating nipple 1, pull salvagable Spool assembly 2 out with the wire Launching and Bailing device.
When needing the oil jacket pressure system to isolate as packer set fully, salvagable Spool assembly 2 usefulness wire Launching and Bailing devices are devoted oneself to work salvagable Spool assembly 2 to get final product in tube 1 the eccentric orfice.Also can from the eccentric orfice of seating nipple 1, pull salvagable Spool assembly 2 out with throw in catcher.
When needing oil jacket to be communicated with, with throw in catcher salvagable Spool assembly 2 is pulled out from seating nipple 1 and to be got final product as draining.
Claims (8)
1. but down-hole off-centre pulling casing annulus chemicals dosing plant, comprise seating nipple (1), salvagable Spool assembly (2), O RunddichtringO (3), it is characterized in that: salvagable Spool assembly (2) is housed in the seating nipple (1), is provided with O RunddichtringO (3) between seating nipple (1) and the salvagable Spool assembly (2).
2. but a kind of down-hole off-centre pulling casing annulus chemicals dosing plant according to claim 1, it is characterized in that: seating nipple (1) is provided with centre bore and eccentric orfice.
3. but a kind of down-hole off-centre pulling casing annulus chemicals dosing plant according to claim 1, it is characterized in that: seating nipple (1) is made up of top connection (11), guide way (12), adapter sleeve (13), body (14), top connection (11) is connected with adapter sleeve (13), guide way (12) is installed in the adapter sleeve (13), is body (14) in the bottom of seating nipple (1).
4. but a kind of down-hole off-centre pulling casing annulus chemicals dosing plant according to claim 3, it is characterized in that: body (14) is provided with eccentric orfice.
5. but a kind of down-hole off-centre pulling casing annulus chemicals dosing plant according to claim 1, it is characterized in that: salvagable Spool assembly (2) is by locking member (27), salvagable spool body (28), O RunddichtringO (29), O RunddichtringO (32), back-moving spring (30), valve ball (31), valve seat pressure cap (33), ball seat (34), O RunddichtringO (35) is formed, locking member (27) is connected with salvagable spool body (28), between salvagable spool body (28) and the valve ball (31) back-moving spring (30) is housed, valve seat pressure cap (33) is connected with ball seat (34).
6. but a kind of down-hole off-centre pulling casing annulus chemicals dosing plant according to claim 5, it is characterized in that: be provided with O RunddichtringO (29) between locking member (27) and the salvagable spool body (28), be provided with O RunddichtringO (35) between salvagable spool body (28) and the ball seat (34), salvagable spool body (28) is provided with O RunddichtringO (32).
7. but a kind of down-hole off-centre pulling casing annulus chemicals dosing plant according to claim 5 is characterized in that: back-moving spring (30) is housed in the salvagable spool body (28).
8. but a kind of down-hole off-centre pulling casing annulus chemicals dosing plant according to claim 5, it is characterized in that: valve ball (31) is seated on the ball seat (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720103755XU CN201024997Y (en) | 2007-03-07 | 2007-03-07 | A surrounding drug addition device for under-well eccentric and dragging bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720103755XU CN201024997Y (en) | 2007-03-07 | 2007-03-07 | A surrounding drug addition device for under-well eccentric and dragging bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201024997Y true CN201024997Y (en) | 2008-02-20 |
Family
ID=39098855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720103755XU Expired - Lifetime CN201024997Y (en) | 2007-03-07 | 2007-03-07 | A surrounding drug addition device for under-well eccentric and dragging bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201024997Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150462A (en) * | 2015-03-27 | 2016-11-23 | 中国石油化工股份有限公司 | The method of a kind of down-hole dosing and device for continuously adding medicine |
-
2007
- 2007-03-07 CN CNU200720103755XU patent/CN201024997Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150462A (en) * | 2015-03-27 | 2016-11-23 | 中国石油化工股份有限公司 | The method of a kind of down-hole dosing and device for continuously adding medicine |
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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: 20080220 |
|
| CX01 | Expiry of patent term |