RU2492314C1 - Screened pipe - Google Patents
Screened pipe Download PDFInfo
- Publication number
- RU2492314C1 RU2492314C1 RU2012118767/03A RU2012118767A RU2492314C1 RU 2492314 C1 RU2492314 C1 RU 2492314C1 RU 2012118767/03 A RU2012118767/03 A RU 2012118767/03A RU 2012118767 A RU2012118767 A RU 2012118767A RU 2492314 C1 RU2492314 C1 RU 2492314C1
- Authority
- RU
- Russia
- Prior art keywords
- pipe
- pipes
- filter
- perforated
- taper
- Prior art date
Links
- 239000004576 sand Substances 0.000 claims description 8
- 238000001914 filtration Methods 0.000 abstract description 5
- 238000005065 mining Methods 0.000 abstract description 2
- 210000001513 Elbow Anatomy 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 239000000126 substances Substances 0.000 abstract 1
- 239000011148 porous materials Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000010586 diagrams Methods 0.000 description 1
- 239000007789 gases Substances 0.000 description 1
- 239000007788 liquids Substances 0.000 description 1
- 239000003921 oils Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Images
Abstract
Description
The invention relates to the mining industry, more specifically to filtering devices, and can be used in the operation of oil and gas wells.
The closest technical solution to the claimed object is a sand filter according to the patent of the Russian Federation No. 2433252, containing the outer and inner perforated frames and placed between them a set of filter elements [prototype].
The disadvantage of this filter is the fast and difficult to regenerate blockage of the pores of the filtering elements with mechanical impurities.
The disadvantage of the prototype is that. that the pore spaces are quickly clogged with sand, as a result of which the filter must be removed from the well for washing gravel.
The technical result is an increase in the duration of the filter by eliminating the clogging of the filter mesh.
This is achieved by the fact that in the sand filter, consisting of concentrically located outer and intermediate pipes, a sub, the outer and inner pipes in the upper part are interconnected by tangential nozzles, and the inner and intermediate pipes in the lower part are also interconnected by tangential nozzles, but opposite oriented, while the annular gap between the intermediate and inner pipes in the upper part, as well as the upper and lower parts of the inner pipe are equipped with plugs, the outer pipe while the upper part is provided with elastic rings, and at the bottom - a plug, provided with an intermediate tube disposed inside the filter element, formed as a perforated cone with perforations inverse ratio of 50 to 85%, and located axially intermediate pipe.
The drawing shows a diagram of a sand filter.
The anti-sand filter consists of a concentrically arranged outer pipe 1, an intermediate pipe 3, an internal filter element 2 located axially symmetrically to the intermediate pipe 3, and made in the form of a perforated inverse cone with a perforation coefficient of 50 to 85%, tangential pipes 5 and 6, plugs 7, 8 and 9, annular plug 10, elastic rings 11, sub 12, holes 14 and 15, made on the intermediate pipe 3. Inside the perforated inverse cone 2, at least one filtering element is coaxially ment 16, formed as a perforated cylinder with a perforation ratio of 80 to 90%.
The anti-sand filter is lowered into the well in the layout with any type of pumping equipment, while the elastic rings 11 overlap the annular gap 13 between the casing 4 of the well and the outer pipe 1 of the filter.
The sand filter works as follows.
The reservoir fluid, driven by the action of the pump, through the tangential nozzles 5, twists, enters the intermediate pipe 3, since the pipe 3 has plugs 7 and 8 at the top and bottom, the fluid moves down, where it flows from the internal filter elements 2 and 16 through the tangential nozzles 6 and along the annular gap formed by the outer 1 and intermediate 3 pipes, rises up, where through the holes 14 and 15 it enters the pump, the sub 12 is a connecting link of the outer 1 and intermediate 3 pipes.
The mechanical impurities contained in the liquid, under the action of centrifugal force, settle on the wall of the inner filter element 2, and are washed off by the fluid flow and move to the outer edge, where through the holes of the filter element 2 and 16 they fall into the annular gap formed by the inner element 2 and 16 by the intermediate pipe 3, and under the influence of gravitational forces move to the bottom of the outer pipe 1, the duration of the filter depends on the volume of the lower part of the pipe 1, namely the part located below the tangential pipes 6, pr and this pipe 1 is equipped with a plug 9, designed to clean the filter when lifting it to the day surface.
Claims (1)
- An anti-sand filter, consisting of concentrically located outer and intermediate pipes, a sub, the outer and inner pipes in the upper part are connected by tangential pipes, and the inner and intermediate pipes in the lower part are also connected by tangential pipes, but oppositely oriented, with an annular gap between the intermediate and inner pipes in the upper part, as well as the upper and lower parts of the inner pipe are equipped with plugs, the outer pipe in the upper part is provided elastic rings, and in the lower part a plug, characterized in that the intermediate pipe is equipped with a filter element located inside it, made in the form of a perforated return cone with a perforation coefficient from 50 to 85%, and located axially symmetrically to the intermediate pipe, and coaxially inside the perforated return cone at least one filter element is arranged in the form of a perforated cylinder with a perforation coefficient from 80 to 90%.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2012118767/03A RU2492314C1 (en) | 2012-05-10 | 2012-05-10 | Screened pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2012118767/03A RU2492314C1 (en) | 2012-05-10 | 2012-05-10 | Screened pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
RU2492314C1 true RU2492314C1 (en) | 2013-09-10 |
Family
ID=49164926
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU2012118767/03A RU2492314C1 (en) | 2012-05-10 | 2012-05-10 | Screened pipe |
Country Status (1)
Country | Link |
---|---|
RU (1) | RU2492314C1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2585612C1 (en) * | 2015-04-21 | 2016-05-27 | Рашит Салимович Юмачиков | Self-cleaning filter module |
RU181492U1 (en) * | 2017-11-21 | 2018-07-17 | ПАО "Татнефть" имени В.Д. Шашина | Device to prevent sand from entering the pump intake |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2158358C1 (en) * | 1999-03-09 | 2000-10-27 | Открытое акционерное общество "Сибирская инновационная нефтяная корпорация" | Sand filter |
RU49103U1 (en) * | 2005-06-15 | 2005-11-10 | Открытое акционерное общество "Татнефть" имени В.Д. Шашина | Filter anti-sand |
RU2305756C1 (en) * | 2006-01-10 | 2007-09-10 | Рашит Салимович Юмачиков | Self-cleaning well screen |
RU2408779C1 (en) * | 2009-08-21 | 2011-01-10 | Владимир Александрович Чигряй | Well filter |
-
2012
- 2012-05-10 RU RU2012118767/03A patent/RU2492314C1/en active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2158358C1 (en) * | 1999-03-09 | 2000-10-27 | Открытое акционерное общество "Сибирская инновационная нефтяная корпорация" | Sand filter |
RU49103U1 (en) * | 2005-06-15 | 2005-11-10 | Открытое акционерное общество "Татнефть" имени В.Д. Шашина | Filter anti-sand |
RU2305756C1 (en) * | 2006-01-10 | 2007-09-10 | Рашит Салимович Юмачиков | Self-cleaning well screen |
RU2408779C1 (en) * | 2009-08-21 | 2011-01-10 | Владимир Александрович Чигряй | Well filter |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2585612C1 (en) * | 2015-04-21 | 2016-05-27 | Рашит Салимович Юмачиков | Self-cleaning filter module |
RU181492U1 (en) * | 2017-11-21 | 2018-07-17 | ПАО "Татнефть" имени В.Д. Шашина | Device to prevent sand from entering the pump intake |
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