Shaped charge with ring shaped jet
Provided is a shaped charge for use in a wellbore. The shaped charge, in one example, includes a case exterior, the case exterior including an outer surface, and an inner surface forming an cavity, a case interior located within the cavity, a toroidal shaped liner located within the cavity and surrounding a base of the case interior, and explosive material located within a first gap between the inner surface of the case exterior and the toroidal shaped liner and a second gap between the toroidal shaped liner and the case interior.
1. A shaped charge for use in a wellbore, comprising:
a case exterior, the case exterior including an outer surface, and an inner surface forming a cavity;
a case interior located within the cavity, the case interior having a first larger inner portion and a second smaller outer portion, the first larger inner portion having a cross-sectional shape of a pentagon or hexagon;
a toroidal shaped liner located within the cavity and surrounding a base of the case interior; and
explosive material located within a first gap between the inner surface of the case exterior and the toroidal shaped liner and a second gap between the toroidal shaped liner and the case interior.
2. The shaped charge of claim 1 , wherein the case exterior is a single piece case exterior.
3. The shaped charge of claim 1 , wherein the first larger inner portion has a cross-sectional shape of an irregular pentagon or irregular hexagon.
4. The shaped charge of claim 1 , wherein an angle (θ) of a downward slanting side of the first larger inner portion substantially mirrors an angle (α) of a downward slanting side of the toroidal shaped liner.
5. The shaped charge of claim 1 , wherein the first gap and the second gap have substantially similar cross-sectional widths (w).
6. The shaped charge of claim 1 , wherein the toroidal shaped liner is a conical toroidal shaped liner or a hemispherical toroidal shaped liner.
7. A perforating gun assembly for use in a wellbore, the perforating gun assembly comprising:
a carrier gun body;
a charge holder disposed within the carrier gun body; and
a plurality of shaped charges supported within the carrier gun body by the charge holder, wherein each shaped charge includes:
a case exterior, the case exterior including an outer surface, and an inner surface forming a cavity;
a case interior located within the cavity, the case interior having a first larger inner portion and a second smaller outer portion, the first larger inner portion having a cross-sectional shape of a pentagon or hexagon;
a toroidal shaped liner located within the cavity and surrounding a base of the case interior; and
explosive material located within a first gap between the inner surface of the case exterior and the toroidal shaped liner and a second gap between the toroidal shaped liner and the case interior.
8. The perforating gun assembly of claim 7 , wherein the case exterior is a single piece case exterior.
9. The perforating gun assembly of claim 7 , wherein the first larger inner portion has a cross-sectional shape of an irregular pentagon or irregular hexagon.
10. The perforating gun assembly of claim 7 , wherein an angle (θ) of a downward slanting side of the first larger inner portion substantially mirrors an angle (α) of a downward slanting side of the toroidal shaped liner.
11. The perforating gun assembly of claim 7 , wherein the first gap and the second gap have substantially similar cross-sectional widths (w).
12. The perforating gun assembly of claim 7 , wherein the toroidal shaped liner is a conical toroidal shaped liner or a hemispherical toroidal shaped liner.
13. A method for perforating a wellbore, comprising:
positioning a perforating gun assembly at a desired location within a wellbore, the perforating gun assembly including:
a carrier gun body;
a charge holder disposed within the carrier gun body; and
a plurality of shaped charges supported within the carrier gun body by the charge holder, wherein each shaped charge includes:
a case exterior, the case exterior including an outer surface, and an inner surface forming a cavity;
a case interior located within the cavity, the case interior having a first larger inner portion and a second smaller outer portion, the first larger inner portion having a cross-sectional shape of a pentagon or hexagon;
a toroidal shaped liner located within the cavity and surrounding a base of the case interior; and
explosive material located within a first gap between the inner surface of the case exterior and the toroidal shaped liner and a second gap between the toroidal shaped liner and the case interior; and
detonating the explosive material within the plurality of shaped charges to form a plurality of ring shaped jets that penetrate the wellbore and form a plurality of openings therein.
14. The method of claim 13 , wherein the case exterior is a single piece case exterior.
15. The method of claim 13 , wherein the first larger inner portion has a cross-sectional shape of an irregular pentagon or irregular hexagon.
16. The method of claim 13 , wherein the toroidal shaped liner is a conical toroidal shaped liner or a hemispherical toroidal shaped liner.