FIELD: oil-and-gas industry.
SUBSTANCE: aperture filter comprises perforated load-bearing pipe and slot filtration element made up of wire wound on lengthwise elements in helical line. Wire cross-section feature pentahedral shape. One of wire faces is parallel with filter lengthwise axis to make its outer surface. Every cheek has two faces. Top faces make filtration gap while bottom faces converged to form acute angle. Top faces are perpendicular to filter lengthwise axis and parallel with top faces of adjacent turns. Angle of inclination of top faces from crosswise axis is larger than that of bottom faces. Angle of bottom faces connection is rounded.
EFFECT: higher reliability, efficiency and wear resistance.
11 cl, 11 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| COMBINED WELL SCREEN | 2007 |
|
RU2359109C2 |
| WELL FILTERS STRING AND METHOD OF WELL FILTERS STRING ASSEMBLY | 2008 |
|
RU2378496C1 |
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|
RU2378494C1 |
| ARRANGEMENT OF WELL STRAINERS FOR DECREASING FLOODING OF OIL WELLS | 2008 |
|
RU2388904C2 |
| DEVICE TO REDUCE OIL WELL DROWNING | 2008 |
|
RU2378500C1 |
| WELL FILTER | 2007 |
|
RU2347890C2 |
| SLOT-TYPE WELL STRAINER | 2010 |
|
RU2446275C1 |
| DEMOUNTABLE WELL SCREEN | 2007 |
|
RU2348795C1 |
| WELL FILTER AND ITS MANUFACTURING METHOD | 2007 |
|
RU2347891C2 |
| WELL FILTERING DEVICE | 2007 |
|
RU2340763C1 |
