FIELD: treatment of near-face zone of well seam. SUBSTANCE: cavitator has hollow case and pulse generator. The latter is formed by placing dome and bushing with helical channels into case. The latter has contracting channel and swirl chamber. Annular expanding channel is formed by two conical surfaces on external surface side of case with channel aperture angle of 6 to 7 deg. Bushing is installed for replacement. Dome is collapsible structure also installed for replacement. Vortex chamber communicates with expanding channel by means of side tangential channels provided in changeable extension pieces installed in case. EFFECT: improved design. 11 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| JET SWIRL DEVICE | 1996 |
|
RU2085762C1 |
| DOUBLE-STAGE PULSATOR FOR TREATMENT OF BOTTOM-HOLE ZONE IN OIL BED | 1996 |
|
RU2114280C1 |
| METHOD AND DEVICE FOR TREATMENT OF THE NEAR-BOTTOM BED AREA | 1992 |
|
RU2047729C1 |
| TANDEM WELL JET PLANT | 1996 |
|
RU2100661C1 |
| WELL FLUSHING OUT DEVICE | 1992 |
|
RU2047740C1 |
| DEVICE FOR CLEARING AND TREATING OF WELLS | 1997 |
|
RU2114983C1 |
| BOTTOM-HOLE ZONE TREATMENT METHOD | 1999 |
|
RU2155884C1 |
| METHOD OF OPERATION OF WELL PUMP-EJECTOR IMPULSE UNIT AND DESIGN OF UNIT | 1996 |
|
RU2107842C1 |
| BOREHOLE JET DEVICE | 1999 |
|
RU2155883C1 |
| CAVITATION DEVICE FOR STIMULATION OF OIL RECOVERY OF FORMATIONS | 2019 |
|
RU2713846C1 |
