An explosive cord is disclosed. In various embodiments, the explosive cord includes a tube having a tube inner surface and a tube outer surface, the tube inner surface defining a hollow interior that extends along a length of the tube; a carrier fiber disposed within the hollow interior of the tube, the carrier fiber having a carrier fiber exposed surface area; and a reactive material disposed on the carrier fiber exposed surface area.

An explosive device is described herein, wherein the explosive device includes a substrate that has a surface, wherein surface energy of a portion of the surface of the substrate has been modified in a vacuum chamber from a first surface energy to a second surface energy. The explosive device additionally includes explosive material that has been deposited on the surface of the substrate in the vacuum chamber by way of physical vapor deposition (PVD), wherein the explosive material is deposited on the portion of the surface of the substrate subsequent to the surface energy of the portion of the surface of the substrate being modified from the first surface energy to the second surface energy.

A detonating cord for using in a perforating gun includes an explosive layer and an electrically conductive layer extending around the explosive layer. The electrically conductive layer is configured to relay a communication signal along a length of the detonating cord. In an embodiment, a protective jacket extends around the electrically conductive layer of the detonating cord. The detonating cord may be assembled in a perforating gun to relay a communication signal from a top connector to a bottom connector of the perforating gun, and to propagate a detonating explosive stimulus along its length to initiate shaped charges of the perforating gun. A plurality of perforating guns, including the detonating cord, may be connected in series, with the detonating cord of a first perforating gun in communication with the detonating cord of a second perforating gun.

A shock tube package system and a method of deploying a shock tube package system is provided. The system includes a coreless bundle of shock tubing. The system further includes an outer covering disposed about the periphery of the bundle of shock tubing. In an embodiment, the outer covering is made from a flexible or elastic material such as a textile.

A shock tube package system and a method of deploying a shock tube package system is provided. The system includes a coreless bundle of shock tubing. The system further includes an outer covering disposed about the periphery of the bundle of shock tubing. In an embodiment, the outer covering is made from a flexible or elastic material such as a textile.

Included are methods and systems for oilfield perforating. An example system includes a firing head subassembly; a gun subassembly; and 4,10-dinitro-2,6,8,12-tetraoxa-4,10-diazatetracyclo[5.5.0.0.sup.5,9.0.sup.3,11]-dodecane (“TEX”). An example method includes lowering a perforating system into a casing of a wellbore, wherein the perforating system comprises TEX; detonating the TEX; and perforating the casing.

A shock tube package system and a method of deploying a shock tube package system is provided. The system includes a coreless bundle of shock tubing. The system further includes an outer covering disposed about the periphery of the bundle of shock tubing. The outer covering being made from a flexible or ela In an embodiment, the outer covering is made from a flexible or elastic material such as a textile.

A shock tube package system and a method of deploying a shock tube package system is provided. The system includes a coreless bundle of shock tubing. The system further includes an outer covering disposed about the periphery of the bundle of shock tubing. The outer covering being made from a flexible or ela In an embodiment, the outer covering is made from a flexible or elastic material such as a textile.

A shock tube for propagating and initiating a signal to an explosive charge which includes at least first and second elongate flexible conductors on a body of the detonator to enable two-way communication between the explosive charge and a blasting machine thereby to confirm the status of the detonator prior to sending a fire signal.

A shock tube for propagating and initiating a signal to an explosive charge which includes at least first and second elongate flexible conductors on a body of the detonator to enable two-way communication between the explosive charge and a blasting machine thereby to confirm the status of the detonator prior to sending a fire signal.