CN202170783U - Self-cleaning type double-layer filtering screen pipe - Google Patents
Self-cleaning type double-layer filtering screen pipe Download PDFInfo
- Publication number
- CN202170783U CN202170783U CN2011201751936U CN201120175193U CN202170783U CN 202170783 U CN202170783 U CN 202170783U CN 2011201751936 U CN2011201751936 U CN 2011201751936U CN 201120175193 U CN201120175193 U CN 201120175193U CN 202170783 U CN202170783 U CN 202170783U
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- ball groove
- joint
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Abstract
The utility model relates to a downhole tool used for an oil well of an oil field, in particular to a self-cleaning type double-layer filtering screen pipe which consists of an upper joint, an outer pipe, an inner pipe, a valve joint, a ball groove, a short pipe, a lower joint, a valve ball seat, a valve ball and a spring, wherein the lower end of the upper joint is connected with the upper ends of the outer pipe and the lower pipe; the lower end of the outer pipe is connected with the upper end of the valve joint; the upper part of the ball groove is sheathed on the lower part of the valve ball seat; the inner wall of the ball groove is provided with the valve ball seat; the valve ball and the spring are installed in the ball groove; the upper part of the short pipe is sheathed on the ball groove; and the lower end of the short pipe is connected with the lower joint. The self-cleaning type double-layer filtering screen pipe has the functions of preventing sand and gas as well as setting sand, and is high in sand blocking accuracy, good in self-washing effect and long in service life, thus improving the efficiency of an oil well pump, prolonging the service life of the oil well pump and increasing the economic benefit of oil extraction.
Description
Technical field
The utility model relates to the downhole tool that a kind of oilfield uses, and is specifically related to a kind of self-cleaning double medium filtration screen casing.
Background technology
At present, oil well has cutting seam sieve tube, wire-wrapped screen, filling screen casing, concentric screen etc. with sand control screen, cutting seam sieve tube, wire-wrapped screen and filling screen casing sand block precision is low, intensity is low, fragile; Concentric screen in use; From washing weak effect, impurity such as sand are trapped between outer tube and the core pipe easily, make the concentric screen can't operate as normal; Reduce oil well pump efficient, shortened the application life of oil well pump.
Summary of the invention
The purpose of the utility model provides a kind of long service life, and the sand block precision is high, has the sand setting function and washes effective self-cleaning double medium filtration screen casing certainly.
The technical scheme of the utility model is:
Self-cleaning double medium filtration screen casing includes top connection, outer tube, interior pipe, lower contact, and the lower end of top connection connects the upper end of outer tube and interior pipe; The lower end of outer tube connects the upper end of valve joint; The top of ball groove is enclosed within on the bottom of valve ball seat, and ball groove inwall is provided with the valve ball seat, and the valve ball and spring is installed in the ball groove; The top of short tube is enclosed within on the ball groove, and the lower end of short tube connects lower contact.
Concrete, the external surface of interior pipe is provided with helical blade.
Concrete, top connection has the exhaust inclined hole.
Concrete, the external surface of interior pipe bottom is provided with wrapping wire.
Concrete, the lower end of spring is provided with adjustment screw.
The operating principle of the utility model is: the top connection of the utility model be lowered in the oil well after oil well pump is connected; Fluid is got in the annular space between outer tube and the interior pipe by this device outer tube aperture; Realize that gas, sand, liquid separate automatically, isolated gas is entered in the well by the exhaust inclined hole of top connection; Isolated sand sinks to the shaft bottom through the valve ball seat; Separate back fluid and get into oil well pump from interior pipe.Owing to when liquid gets into the inner core pipe through helical blade, wash away the remaining sand on the inner pipe wall, play the effect that the oneself cleans.
The beneficial effect of the utility model is: have the function of sand control, gas-tight, sand setting, the sand block precision is high, wash certainly effective, long service life, thus improve oil well pump efficient, prolong the application life of oil well pump, increase the oil recovery economic benefit.
Description of drawings
Fig. 1 is the structural representation of the utility model.、
The specific embodiment
Self-cleaning double medium filtration screen casing is made up of top connection 1, outer tube 3, interior pipe 2, valve joint 8, ball groove 5, short tube 6, lower contact 7, valve ball seat 8, valve ball 9, spring 10, and top connection 1 has exhaust inclined hole 13; The lower end of top connection 1 connects the upper end of outer tube 3 and interior pipe 2; Outer tube 1 middle part external surface is provided with helical blade 14, and the outer tube lower external face is provided with wrapping wire 12, and the lower end of outer tube 3 connects the upper end of valve joint 4; The top of ball groove 5 is enclosed within on the bottom of valve ball seat 8; Ball groove 5 inwalls are provided with valve ball seat 8, and valve ball 9 is installed in the ball groove 5 with spring 10, and the lower end of spring 10 is provided with adjustment screw 11; The top of short tube 6 is enclosed within on the ball groove 5, and the lower end of short tube 6 connects lower contact 7.
Should be noted that at last: above embodiment only in order to the explanation the utility model technical scheme but not to its restriction; Although with reference to preferred embodiment the utility model has been carried out detailed explanation, the those of ordinary skill in affiliated field is to be understood that: still can make amendment to the specific embodiment of the utility model perhaps is equal to replacement to the part technical characterictic; And not breaking away from the spirit of the utility model technical scheme, it all should be encompassed in the middle of the technical scheme scope that the utility model asks for protection.
Claims (5)
1. self-cleaning double medium filtration screen casing includes top connection, outer tube, interior pipe, lower contact, and the lower end of top connection connects the upper end of outer tube and interior pipe; It is characterized in that the lower end of outer tube connects the upper end of valve joint, the top of ball groove is enclosed within on the bottom of valve ball seat; Ball groove inwall is provided with the valve ball seat; The valve ball and spring is installed in the ball groove, and the top of short tube is enclosed within on the ball groove, and the lower end of short tube connects lower contact.
2. according to the said self-cleaning double medium filtration of claim 1 screen casing, it is characterized in that the external surface of interior pipe is provided with helical blade.
3. according to the said self-cleaning double medium filtration of claim 1 screen casing, it is characterized in that top connection has the exhaust inclined hole.
4. according to the said self-cleaning double medium filtration of claim 1 screen casing, it is characterized in that the external surface of interior pipe bottom is provided with wrapping wire.
5. according to the said self-cleaning double medium filtration of claim 1 screen casing, it is characterized in that the lower end of spring is provided with adjustment screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201751936U CN202170783U (en) | 2011-05-30 | 2011-05-30 | Self-cleaning type double-layer filtering screen pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201751936U CN202170783U (en) | 2011-05-30 | 2011-05-30 | Self-cleaning type double-layer filtering screen pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202170783U true CN202170783U (en) | 2012-03-21 |
Family
ID=45828978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201751936U Expired - Fee Related CN202170783U (en) | 2011-05-30 | 2011-05-30 | Self-cleaning type double-layer filtering screen pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202170783U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244082A (en) * | 2013-04-10 | 2013-08-14 | 中国石油天然气集团公司 | Flexible first-time sand control sandblasting technique pipe |
| RU2504644C1 (en) * | 2012-06-25 | 2014-01-20 | Асгар Маратович Валеев | Downhole filter with flushing without surfacing |
| CN103541695A (en) * | 2013-10-24 | 2014-01-29 | 西安陆海油田设备有限公司 | Dynamic self-cleaning screen pipe |
| CN104329069A (en) * | 2014-10-21 | 2015-02-04 | 中国石油天然气股份有限公司 | Fire flooding system |
| CN104594856A (en) * | 2015-01-15 | 2015-05-06 | 新疆罡拓能源科技有限公司 | Full-diameter slide bushing sieve tube for oil and gas reservoir segmented acid fracturing |
| RU2610738C1 (en) * | 2016-01-29 | 2017-02-15 | Дмитрий Валентинович Моисеев | Slotted borehole filter |
| CN108643880A (en) * | 2018-04-17 | 2018-10-12 | 中国石油天然气股份有限公司 | A kind of new type of sand prevention air trap device |
| CN114753807A (en) * | 2022-03-14 | 2022-07-15 | 中国海洋石油集团有限公司 | Novel deep sea hydrate production sand control screen pipe |
-
2011
- 2011-05-30 CN CN2011201751936U patent/CN202170783U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2504644C1 (en) * | 2012-06-25 | 2014-01-20 | Асгар Маратович Валеев | Downhole filter with flushing without surfacing |
| CN103244082A (en) * | 2013-04-10 | 2013-08-14 | 中国石油天然气集团公司 | Flexible first-time sand control sandblasting technique pipe |
| CN103541695A (en) * | 2013-10-24 | 2014-01-29 | 西安陆海油田设备有限公司 | Dynamic self-cleaning screen pipe |
| CN103541695B (en) * | 2013-10-24 | 2016-04-20 | 西安陆海油田设备有限公司 | A kind of dynamically self-cleaning screen casing |
| CN104329069A (en) * | 2014-10-21 | 2015-02-04 | 中国石油天然气股份有限公司 | Fire flooding system |
| CN104594856A (en) * | 2015-01-15 | 2015-05-06 | 新疆罡拓能源科技有限公司 | Full-diameter slide bushing sieve tube for oil and gas reservoir segmented acid fracturing |
| CN104594856B (en) * | 2015-01-15 | 2017-06-13 | 新疆罡拓能源科技有限公司 | A kind of full-bore sliding sleeve screen casing that acid fracturing is segmented for oil-gas reservoir |
| RU2610738C1 (en) * | 2016-01-29 | 2017-02-15 | Дмитрий Валентинович Моисеев | Slotted borehole filter |
| CN108643880A (en) * | 2018-04-17 | 2018-10-12 | 中国石油天然气股份有限公司 | A kind of new type of sand prevention air trap device |
| CN114753807A (en) * | 2022-03-14 | 2022-07-15 | 中国海洋石油集团有限公司 | Novel deep sea hydrate production sand control screen pipe |
| CN114753807B (en) * | 2022-03-14 | 2023-07-25 | 中国海洋石油集团有限公司 | Novel sand control screen pipe for deep sea hydrate production |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120321 Termination date: 20130530 |