FIELD: mining.
SUBSTANCE: group of inventions relates to drilling and operation of wells. Perforator includes a housing, a plunger, a piston with the possibility of radial movement in the piston chamber, a punch with a central channel, at the output of which there is at least one profiled jet nozzle.
EFFECT: piston chamber can have a closed hydraulic connection with an under-plunger cavity, and the above-plunger cavity communicates with the jet nozzle after mechanical opening of the wall of the casing string.
7 cl, 4 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| HYDROMECHANICAL PIERCING PERFORATOR AND ITS OPERATING PRINCIPLE | 2012 |
|
RU2506414C1 |
| DEVICE FOR DEPRESSION-WAVE WELL CLEANING | 2014 |
|
RU2553696C1 |
| COMPLEX HYDRAULIC WEDGE PERFORATOR (VERSIONS) | 2016 |
|
RU2633596C1 |
| RESERVOIRS OPENING METHOD AND EQUIPMENT FOR EXECUTION (VERSIONS) | 2007 |
|
RU2375556C2 |
| DEVICE FOR PERFORATION OF CASED WELL | 1998 |
|
RU2137915C1 |
| METHOD OF REPEATED PRODUCING FORMATION EXPOSING AND DEVICE FOR ITS IMPLEMENTATION | 2008 |
|
RU2365743C1 |
| DEVICE FOR DEVELOPMENT OF PERFORATION CHANNELS OF DEEP PENETRATION IN OIL AND GAS WELLS | 2009 |
|
RU2403380C1 |
| DEVICE FOR PUNCTURING CASING PIPE IN WELL | 2016 |
|
RU2631446C1 |
| METHOD FOR SECONDARY DRILLING OF PRODUCTIVE FORMATION WITH CREATION OF SYSTEM FROM EXTENDED DRAIN CHANNELS AND DEVICE FOR ITS IMPLEMENTATION | 2010 |
|
RU2457318C2 |
| DEVICE FOR SLIT PERFORATION OF CASED WELLS | 2003 |
|
RU2241822C1 |
