FIELD: oil and gas industry.
SUBSTANCE: invention relates to oil and gas industry, particularly to well filters. Device includes perforated supporting pipe and at least one slit-type filter element, made of wire which is wound on longitudinal elements along a spiral. At beginning and end of slit-type filter element there are restricting rings. Each slit-type filter element is connected to a supporting pipe by welding one limiting ring.
EFFECT: higher resistance of filter to abrasive wear, providing required level of filtration and flow rate for a long time, increased rigidity and strength of filter element, possibility of self-cleaning filter elements.
14 cl, 24 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| SLOTTED BOREHOLE FILTER | 2016 |
|
RU2610738C1 |
| FRAMELESS BOREHOLE FILTER | 2016 |
|
RU2606470C1 |
| BOREHOLE APERTURE FILTER | 2012 |
|
RU2507384C2 |
| COMBINED WELL SCREEN | 2007 |
|
RU2359109C2 |
| FRAMELESS BOREHOLE FILTER | 2015 |
|
RU2594903C1 |
| SELF-CLEANING WELL FILTER | 2015 |
|
RU2600224C1 |
| WELL FILTERS STRING AND METHOD OF WELL FILTERS STRING ASSEMBLY | 2008 |
|
RU2378496C1 |
| DOWNHOLE FILTER | 2020 |
|
RU2730728C1 |
| SLOTTED FILTER WITH WIRED FILTRATING ELEMENT | 2008 |
|
RU2378494C1 |
| DOWNHOLE FILTER | 2020 |
|
RU2724731C1 |
