Components and methods for use with explosives

An explosive device for use in a wellbore environment, comprising:

• a support structure
• plural explosives carried by the support structure;
• and
• one or more shock impeding elements carried by the support structure and in close proximity to the plural explosives to provide an impediment to shock wave propagation in the wellbore environment caused by detonation of the explosives,
• wherein each of the one or more shock impeding elements comprises a porous solid
• wherein the porous solid comprises a material selected from the group consisting of cement mixed with shells each containing a compressible element, and epoxy mixed with shells each containing a compressible element.

An explosive device for use in a wellbore environment, comprising:

• plural explosives;
• and
• one or more shock impeding elements in close proximity to the plural explosives to provide an impediment to shock wave propagation in the wellbore environment caused by detonation of the explosives,
• wherein the one or more shock impeding elements comprise a composite including a hollow filler material, a heavy powder, and a binder.

An explosive device for use in a wellbore environment, comprising:

• plural explosives;
• one or more shock impeding elements in close proximity to the plural explosives to provide an impediment to shock wave propagation in the wellbore environment caused by detonation of the explosives;
• and
• a perforating gun having a strip, wherein the explosives comprise capsule charges coupled to the strip, and the one or more shock impeding elements comprise a porous material encapsulating at least a portion of the strip and capsule charges.

An explosive device for use in a wellbore environment, comprising:

• plural explosives;
• and
• one or more shock impeding elements in close proximity to the plural explosives to provide an impediment to shock wave propagation in the wellbore environment caused by detonation of the explosives,
• wherein the explosive device comprises a perforating gun having a hollow carrier and a loading tube, and wherein the explosives comprise shaped charges mounted to the loading tube, and the one or more shock impeding elements comprise a porous material inside the loading tube.

An explosive device for use in a wellbore environment comprising:

• plural explosives;
• and
• one or more shock impeding elements in close proximity to the plural explosives to provide an impediment to shock wave propagation in the wellbore environment caused by detonation of the explosives;
• a carrying tube, wherein the explosives comprise shaped charges mounted inside the carrying tube, and the one or more shock impeding elements comprise a porous material inside the carrying tube;
• and
• a strip on which the carrying tube is mounted.

An explosive device for use in a wellbore environment, comprising:

• plural explosives;
• and
• one or more shock impeding elements in close proximity to the plural explosives to provide an impediment to shock wave propagation in the wellbore environment caused by detonation of the explosives,
• wherein the one or more shock impeding elements comprise plural layers formed of different types of porous materials around at least portions of the explosives.

An apparatus comprising:

• an explosive;
• and
• a porous material proximal the explosive to impede shock caused by detonation of the explosive,
• wherein the porous material contains a hollow filler material to achieve a predetermined porosity,
• wherein the porous material further contains a heavy powder to achieve a predetermined density.

An apparatus comprising:

• a carrier strip;
• a plurality of explosives, at least some of the explosives mounted on the carrier strip;
• and
• one or more shock impeding elements contacted to the plurality of explosives,
• each of the one or more shock impeding elements formed of a porous material to impede shock caused by detonation of the explosives.