CN2736522Y - Filter - Google Patents
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- Publication number
- CN2736522Y CN2736522Y CN 200420096659 CN200420096659U CN2736522Y CN 2736522 Y CN2736522 Y CN 2736522Y CN 200420096659 CN200420096659 CN 200420096659 CN 200420096659 U CN200420096659 U CN 200420096659U CN 2736522 Y CN2736522 Y CN 2736522Y
- Authority
- CN
- China
- Prior art keywords
- filter
- pipe
- sealing plug
- ball seat
- outer pipe
- 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 - Fee Related
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- Filtration Of Liquid (AREA)
- Filtering Materials (AREA)
Abstract
The utility model discloses a filter comprising an upper joint, a lower joint, an outer pipe connected with joints, a steel ball and a ball seat arranged in the upper joint. The filter is characterized in that the filter also comprises a welding ring connected with the ball seat, a sealing plug arranged in the lower joint, a sieve cover and an inner pipe connected between the welding ring and the sealing plug, and depositing hohlraum can form between the filter and the outer pipe. The filter adopts the sieve cover and the depositing hohlraum structure formed between the inner pipe and the outer pipe, and the filter can prevent fixed granules in entering well liquid (gas, vapor) and on the wall of oil pipe from falling into the well to block or harm the oil layer. The filter can raise the oil yield and the steam injection effect, so the filter can be widely used in the technologies of various underground tools and pipe column kits, in particular to be used for the special technologies, such as the acidification and the press-breaking.
Description
One, technical field
The utility model relates to filter plant, particularly a kind of strainer that is used for producing well filtration working fluid.
Two, background technology
Existing filter plant generally all is located at ground, can not use in the down-hole, and filter plant is not established in many operations yet, as acidifying etc., often cause the solid particle that carries on working fluid (gas, vapour) and the tubing wall to fall into well, stop up or the injury oil reservoir, make produce oil, annotate the vapour deleterious, output descends.
Three, summary of the invention
The purpose of this utility model provides a kind of improved strainer, and shortcoming or deficiency that it can overcome effectively and avoid existing in the above-mentioned prior art prevent that solid from falling into well, and the injury oil reservoir improves and recovers the oil or notes vapour effect.
Strainer described in the utility model, outer tube on comprising upper and lower joint and being connected it and install steel ball and ball seat in top connection, it is characterized in that also comprising the screen jacket and the interior pipe that connect between the sealing plug installed in the weld-ring that connects on the described ball seat, the described lower contact and weld-ring and the sealing plug, and form the deposition annular space between the outer tube.
Wherein, described screen jacket is wire-wrapped screen or slot pipe.Shoulder and seal in described lower contact inwall is provided with.Described sealing plug is provided with the outer shoulder that combines with interior shoulder on the lower contact inwall, and its upper end is connected with interior pipe.
The utility model has following advantage compared with prior art:
1, created a kind of down-hole filter utility, owing to adopted screen jacket and interior pipe, and formed the structure of deposition annular space between the outer tube, prevented that the solid particle that carries on working fluid (gas, vapour) and the tubing wall from falling into well, stop up or the injury oil reservoir, improve produce oil, annotate the vapour effect.
2, compliance is strong, and is supporting, use all rightly separately, can match with all kinds of downhole tools, technology, tubing string, easy to install and use.
Four, description of drawings
Accompanying drawing is the utility model structural representation.
Five, the specific embodiment
Referring to the figure that bows, a kind of strainer, outer tube 7 on comprising upper and lower joint 1,11 and being connected it and install steel ball 3 and ball seat 4 in top connection, baffle plate 2 is installed on ball seat top, the bottom connects in weld-ring 5, the lower contact installs sealing plug 9, connect screen jacket 6 and interior pipe 8 between weld-ring 5 and the sealing plug 9, form the deposition annular space between screen jacket 6 and interior pipe 8 and the outer tube, the solid content under filtering and other foreign material are deposited wherein.Screen jacket 6 is wire-wrapped screen or slot pipe.Shoulder and seal 10 in the lower contact inwall is provided with.Sealing plug 9 is provided with the outer shoulder that combines with interior shoulder on the lower contact inwall, and its upper end is connected with interior pipe 8.
Claims (4)
1, a kind of strainer, outer tube on comprising upper and lower joint and being connected it and install steel ball and ball seat in top connection is characterized in that also comprising the screen jacket and the interior pipe that connect between the sealing plug installed in the weld-ring that connects on the described ball seat, the described lower contact and weld-ring and the sealing plug.
2, strainer according to claim 1 is characterized in that described screen jacket is wire-wrapped screen or slot pipe.
3. strainer according to claim 1 and 2 is characterized in that described lower contact inwall is provided with interior shoulder and seal.
4, strainer according to claim 3 is characterized in that described sealing plug is provided with the outer shoulder that combines with interior shoulder on the lower contact inwall, and its upper end is connected with interior pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420096659 CN2736522Y (en) | 2004-10-01 | 2004-10-01 | Filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420096659 CN2736522Y (en) | 2004-10-01 | 2004-10-01 | Filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2736522Y true CN2736522Y (en) | 2005-10-26 |
Family
ID=35307258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420096659 Expired - Fee Related CN2736522Y (en) | 2004-10-01 | 2004-10-01 | Filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2736522Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373063A (en) * | 2014-10-29 | 2015-02-25 | 中国石油天然气股份有限公司 | Anti-falling pressure transmission ball seat |
| CN104747103A (en) * | 2015-02-12 | 2015-07-01 | 中国海洋石油总公司 | Shear pin filtrator |
-
2004
- 2004-10-01 CN CN 200420096659 patent/CN2736522Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373063A (en) * | 2014-10-29 | 2015-02-25 | 中国石油天然气股份有限公司 | Anti-falling pressure transmission ball seat |
| CN104373063B (en) * | 2014-10-29 | 2017-03-08 | 中国石油天然气股份有限公司 | Anti-falling pressure transmission ball seat |
| CN104747103A (en) * | 2015-02-12 | 2015-07-01 | 中国海洋石油总公司 | Shear pin filtrator |
| CN104747103B (en) * | 2015-02-12 | 2017-03-15 | 中海油能源发展股份有限公司 | Cut off filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |