FIELD: oil and gas industry, particularly rock drills.
SUBSTANCE: charge comprises body with orifice for blast initiation, explosive arranged in the body and covering formed as shell. The shell is made of material having density exceeding 7000 kg/m3 and having at least one profiled surface. The profile includes trihedral or hexahedral convex members. Distance between adjacent convex member centers is not less than 4 average covering thicknesses. Convex member heights do not exceed average covering thickness to provide cumulative effect.
EFFECT: increased oil output from wells.
19 cl, 1 dwg, 11 ex
| Title | Year | Author | Number |
|---|---|---|---|
| SHAPED CHARGE WITH RELIEF COVERING | 2008 |
|
RU2364819C1 |
| SHAPED CHARGE | 2007 |
|
RU2365859C2 |
| BODY OF THE CHARGE | 2005 |
|
RU2293285C2 |
| SHAPED CHARGE | 2005 |
|
RU2303232C2 |
| METHOD FOR CUMULATIVE ACTION ON CONDENSED MEDIUM | 2003 |
|
RU2254548C1 |
| LAUNCHING SHAPED-CHARGE ELEMENT | 2003 |
|
RU2253830C1 |
| EXPLOSIVE DEVICE | 2006 |
|
RU2331040C1 |
| BLASTING SUPPLY | 2004 |
|
RU2265793C1 |
| BOMB | 2003 |
|
RU2232040C1 |
| PERFORATOR CHARGE | 2003 |
|
RU2250359C2 |
