FIELD: oil and gas industry.
SUBSTANCE: slot-type well strainer includes perforated tube on which filter elements containing stringers to outer surface of which wire is welded so that gaps are formed between coils are installed. At least two filter elements are used. Spring is installed between each pair of filter elements.
EFFECT: eliminating thermal stresses in filter elements.
10 cl, 9 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| WELL FILTER WITH LOW HYDRAULIC FRICTION | 2007 |
|
RU2374433C2 |
| SLOTTED FILTER WITH WIRED FILTRATING ELEMENT | 2008 |
|
RU2378494C1 |
| DEMOUNTABLE WELL SCREEN | 2007 |
|
RU2348795C1 |
| BOREHOLE APERTURE FILTER | 2012 |
|
RU2507384C2 |
| WELL TYPESET FILTER | 2008 |
|
RU2374432C2 |
| WELL FILTER AND ITS MANUFACTURING METHOD | 2007 |
|
RU2347891C2 |
| WELL FILTER | 2007 |
|
RU2347890C2 |
| MULTIPURPOSE WELL SCREEN | 2007 |
|
RU2364709C2 |
| COMBINED WELL SCREEN | 2007 |
|
RU2359109C2 |
| WELL FILTERS STRING AND METHOD OF WELL FILTERS STRING ASSEMBLY | 2008 |
|
RU2378496C1 |
