RU2492314C1 - Screened pipe - Google Patents

Screened pipe Download PDF

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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
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RU
Russia
Prior art keywords
pipe
pipes
filter
perforated
taper
Prior art date
Application number
RU2012118767/03A
Other languages
Russian (ru)
Inventor
Олег Савельевич Кочетов
Мария Олеговна Стареева
Мария Михайловна Стареева
Original Assignee
Олег Савельевич Кочетов
Мария Олеговна Стареева
Мария Михайловна Стареева
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Олег Савельевич Кочетов, Мария Олеговна Стареева, Мария Михайловна Стареева filed Critical Олег Савельевич Кочетов
Priority to RU2012118767/03A priority Critical patent/RU2492314C1/en
Application granted granted Critical
Publication of RU2492314C1 publication Critical patent/RU2492314C1/en

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Abstract

FIELD: mining.
SUBSTANCE: device comprises concentrically arranged outer and intermediate pipes, a reducing taper elbow. The outer and inner pipes in the upper part are connected between each other with tangential nozzles. The inner and outer pipes in the lower part are connected to each other also with tangential nozzles, which are aligned oppositely. The circular gap between the inner and outer 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 equipped with elastic rings, and in the lower part - with a plug. The intermediate pipe is equipped with a filtering element installed inside it and arranged in the form of a perforated back taper with a perforation coefficient from 50 to 85%, and arranged in an axisymmetrical manner to the intermediate pipe. Inside the taper there is at least one filtering element installed, which is made in the form of a perforated cylinder with perforation ratio from 80 to 90%.
EFFECT: increased duration of filter operation.
1 dwg

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)

  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%.
RU2012118767/03A 2012-05-10 2012-05-10 Screened pipe RU2492314C1 (en)

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

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU2012118767/03A RU2492314C1 (en) 2012-05-10 2012-05-10 Screened pipe

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RU (1) RU2492314C1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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