FIELD: oil and gas industry.
SUBSTANCE: tubular body with threaded ends is perforated and installed at exterior surface of a casing with squamate slots finished up to a nominal size by rolling of the casing between rollers. Rolling of the casing between rollers is made till protrusions are formed at the beginning and ending of each slot and a cap appears at upper protrusion of each squamate slot. The gap between rollers is equal to double thickness of a rolled sheet plus 40-60 mcm, while diameter of a shape-generating driven roller is equal to 0.75-0.85 of the casing diameter.
EFFECT: increase of performance rating, improvement of safety during operation.
5 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| WELL STRAINER | 2012 |
|
RU2486332C1 |
| WELL FILTER AND PROCEDURE FOR ITS FABRICATION (VERSIONS) | 2008 |
|
RU2394979C2 |
| CARTRIDGE-TYPE DOWNHOLE FILTER | 2019 |
|
RU2725448C1 |
| WELL SCREEN | 2006 |
|
RU2334865C2 |
| WELL FILTER | 2007 |
|
RU2347890C2 |
| DEMOUNTABLE WELL SCREEN | 2007 |
|
RU2348795C1 |
| DEVICE FOR PERFORATION OF WELL BORE | 1996 |
|
RU2105137C1 |
| WELL FILTER AND ITS MANUFACTURING METHOD | 2007 |
|
RU2347891C2 |
| WELL STRAINER AND METHOD OF ITS FORMATION | 2001 |
|
RU2209299C2 |
| WELL FILTER | 0 |
|
SU1046484A1 |
