Abstract: A method and apparatus for using a tandem sub to connect one or more perforating gun assemblies, having a rotational mechanism located in both ends of the tandem sub allowing the one or more shaped charges to rotate within the one or more perforating assemblies connected to the tandem sub.

Abstract: A method and apparatus for using a tandem sub to connect one or more perforating gun assemblies using a rotational bearing mechanism contained within a sleeve lining the inner diameter in both ends to allow the charge tube assembly to rotate within the gun body and protect the tandem sub from damage when firing the shaped charges.

Abstract: A method and apparatus for using a tandem sub to connect one or more perforating gun assemblies, having a rotational mechanism located in both ends of the tandem sub allowing the one or more shaped charges to rotate within the one or more perforating assemblies connected to the tandem sub.

Abstract: A method and apparatus for inserting a detonator into a door on an end fitting and closing the door into a recess of the end fitting, enabling a quick wireless install of a detonator and resulting in a side-by-side arrangement between the detonator and the detonating cord.

Abstract: A method and apparatus for using a tandem sub to connect one or more perforating gun assemblies, having a rotational bearing mechanism lining the inner diameter in both ends to allow the charge tube assembly to rotate within the gun body.

Abstract: A method and apparatus for containing one or more shaped charges in a single plane, arrayed about the center axis of a gun body, and detonated from a single initiator in a shaped charge cluster assembly, having one or more detonator circuits located within a recess within the shaped charge cluster assembly electrically coupled to the single initiator located at the center of the arrayed shaped charges.

Abstract: A method and apparatus for using a tandem sub to connect one or more perforating gun assemblies using a rotational bearing mechanism contained within a sleeve lining the inner diameter in both ends to allow the charge tube assembly to rotate within the gun body and protect the tandem sub from damage when firing the shaped charges.

Abstract: A method and apparatus for containing one or more shaped charges in a single plane, using a shaped charge housing containing a cluster of one or more shaped charges. The cluster contains with the apex ends facing each other, arrayed about the center axis of a gun body, and detonated from a single initiator located in the middle of the cluster of the one or more shaped charges. The shaped charge housing can be one of many shaped charge housings coupled together to perforate in a plurality of single planes.

Abstract: A method and apparatus for using a tandem sub to connect one or more perforating gun assemblies, having a rotational bearing mechanism lining the inner diameter in both ends to allow the charge tube assembly to rotate within the gun body.

Abstract: A method and apparatus for coupling a pre-wired end fitting with a shaped charge loading tube where the end fitting centers and orients the loading tube within a perforating gun and further includes a selective switch, feed through contact and orifices to insert a wireless detonator and detonating cord, the loading tube being pre-wired with insulated wire.

Abstract: A system and apparatus for applying and removing weight from a tool string over an installed wireline, including a weight section having a longitudinal slot and a removable closure bar.

Abstract: A method and apparatus for using a tandem sub to connect one or more perforating gun assemblies, having a rotational bearing mechanism lining the inner diameter in both ends to allow the charge tube assembly to rotate within the gun body.

Abstract: A method and apparatus for using a tandem sub to connect one or more perforating gun assemblies, having a rotational bearing mechanism lining the inner diameter in both ends to allow the charge tube assembly to rotate within the gun body.

Abstract: A method and apparatus for using a tandem sub to connect one or more perforating gun assemblies, having a rotational bearing mechanism lining the inner diameter in both ends to allow the charge tube assembly to rotate within the gun body.

Abstract: A method for managing a modular product life cycle is described. A central computing device or system receives inputs representative of one or more of: an expected product life cycle, a market demand for the product, a manufacturing process for the product, a reverse manufacturing process for the product, and one or more technical engineering constraints associated with the product. From this information, a first modular product design is determined. Later in the life cycle of the modular product a second plurality of inputs representative of one or more of: a market demand, a manufacturing process, a reverse manufacturing process, and one or more technical engineering constraints are retrieved. From this information, a second modular product design is determined.

Abstract: A system and apparatus for applying and removing weight from a tool string over an installed wireline, including a weight section having a longitudinal slot and a removable closure bar.

Abstract: A method and apparatus for containing one or more shaped charges in a single plane, arrayed about the center axis of a gun body, and detonated from a single initiator in a shaped charge cluster assembly.

Abstract: A method and apparatus for inserting a detonator into a door on an end fitting and closing the door into a recess of the end fitting, enabling a quick wireless install of a detonator and resulting in a side-by-side arrangement between the detonator and the detonating cord.

Abstract: A method and apparatus for containing one or more shaped charges in a single plane, using a shaped charge housing containing a cluster of one or more shaped charges, with the apex ends facing each other, arrayed about the center axis of a gun body, and detonated from a single initiator located in the middle of the cluster of the one or more shaped charges, the shaped charge housing can be one of many shaped charge housings coupled together to perforate in a plurality of single planes.

Abstract: A method and apparatus for coupling a pre-wired end fitting with a shaped charge loading tube where the end fitting centers and orients the loading tube within a perforating gun and further includes a selective switch, feed through contact and orifices to insert a wireless detonator and detonating cord, the loading tube being pre-wired with insulated wire.