Abstract: A computing device and computer-implemented method to provide user-control short message service (SMS). The method begins with accessing, by a server, data in a third-party format from a third-party server. The server and the third-party server are controlled by different business entities. Next, the data in the third-party format is filtered, which has been accessed according to user preferences, the user preferences including a mobile device identifier. Next, the data in the third-party format is converted which as specified by the user preferences into a format compatible with the SMS protocol or an instant message for receipt by a messaging app. Finally, the data is sent in which has been converted into the SMS format or instant message to the mobile device as specified by the mobile device identifier.

Abstract: A perforating gun system includes an outer housing, a charge carrier assembly slidably receivable in the outer housing, wherein the charge carrier assembly includes a charge carrier having a central axis, a first endplate coupled to a first end of the charge carrier, and a second endplate coupled to a second end of the charge carrier, and an initiator assembly including an electrical switch, wherein the electrical switch has a maximum length extending in a direction parallel the central axis that is less than a maximum width of the electrical switch extending in an orthogonal direction relative to the central axis; wherein the electrical switch is configured to detonate a detonator of the perforating gun system in response to receiving a firing signal.

Abstract: A computing device and computer-implemented method to provide student-control short message service (SMS). The method begins with accessing, by a server, data in a third-party format from a third-party server. The server and the third-party server are controlled by different business entities. Next, the data in the third-party format is filtered, which has been accessed according to student preferences, the student preferences including a mobile device identifier. Next, the data in the third-party format is converted which as specified by the student preferences into a format compatible with the SMS protocol or an instant message for receipt by a messaging app. Finally, the data is sent in which has been converted into the SMS format or instant message to the mobile device as specified by the mobile device identifier.

Abstract: A method and system for a perforating gun having a box by pin perforating gun system using swaged down gun bodies. The box by pin perforating gun system may include a removable cartridge to hold a detonator with a switch and an insulated charge holder as an electrical feed-through.

Abstract: A shaped charge retainer ring for use in containing the liner of a shaped charge and the explosive material.

Abstract: A method and system for a perforating gun having a box by pin perforating gun system using swaged down gun bodies. The box by pin perforating gun system may include a removable cartridge to hold a detonator with a switch and an insulated charge holder as an electrical feed-through.

Abstract: A method and apparatus for using a tandem sub between two perforating guns where an EB fire pressure switch arms a detonator after the detonation of a first perforating gun and then a subsequent electrical signal can then detonate the second perforating gun.

Abstract: A box by pin perforating gun system using swaged down gun bodies, a removable cartridge to hold a detonator and switch, and an insulated charge holder as an electrical feed-through.

Abstract: A box by pin perforating gun system using swaged down gun bodies, a removable cartridge to hold a detonator and switch, and an insulated charge holder as an electrical feed-through.

Abstract: A box by pin perforating gun system using swaged down gun bodies, a removable cartridge to hold a detonator and switch, and an insulated charge holder as an electrical feed-through.

Abstract: A shaped charge retainer ring for use in containing the liner of a shaped charge and the explosive material.

Abstract: A box by pin perforating gun system using swaged down gun bodies, a removable cartridge to hold a detonator and switch, and an insulated charge holder as an electrical feed-through.

Abstract: A box by pin perforating gun system using swaged down gun bodies, a removable cartridge to hold a detonator and switch, and an insulated charge holder as an electrical feed-through.

Abstract: An apparatus and method for providing a fiber optic cord in a perforating gun.

Abstract: In accordance with the present invention an improved secondary battery is disclosed which consists of at least two and preferably three or more cells in series, each intermediate cell containing a pair of shared carbonaceous electrodes, each electrode being a carbonaceous body of a length to be inserted into adjacent cell, forming the positive electrode in one cell and the negative electrode in the adjacent cell. Each terminal cell in said series having a second electrode of a carbonaceous material providing a connection to complete the flow of stored energy out of and charge energy into said cell series. Each cell has a formaninous separator between each pair of electrodes in said cell to maintain its electrodes in spaced apart relationship. Each cell is a container or compartment of a container and the common electrode connects each cell to the adjacent cell. Each cell is provided with an ionizable salt in a non-aqueous fluid.

Abstract: A small amount of SiO.sub.2 is added to the sodium borate solder glasses of the type previously used to make tubesheets in hollow fiber, high temperature battery cells. The modified glass is more easily ground and has a lower softening temperature. When the powdered glass is fused, to form the tubesheet and sealingly engage the fibers, the fiber-weakening fluxing action of the glass is considerably reduced.