A wellbore perforating system and method with reliable and safer connections in a perforating gun assembly is disclosed. The system/method includes a gun string assembly (GSA) deployed in a wellbore with multiple perforating guns attached to plural switch subs. The perforating guns are pre-wired with a cable having multi conductors; the multi conductors are connected to electrical ring contacts on either end of the perforating guns. The switch subs are configured with electrical contacts that are attached to the electrical contacts of the perforating guns without the need for manual electrical connections and assembly in the field of operations. The system further includes detonating with a detonator that is positioned upstream of the perforating gun. The detonator is wired to a switch that is positioned downstream of the perforating gun.

A tool for manipulating a tubular. The tool comprising a plurality of tool sections arranged in a stack, each tool section comprising a propellant source having an upper surface and lower surface, the upper and lower surfaces being separated by an outer surface extending around the perimeter of the propellant source, a first flame retardant material being associated with the propellant source upper surface and a second flame retardant material being associated with the propellant source lower surface. The tool further comprises at least one modifying agent provided in or adjacent the tool sections or generated by the tool sections; and an ignition mechanism for igniting the propellant source outer surface of each tool section, such that upon ignition, each propellant source is adapted to deflagrate, creating a stream of combustion products, the stream of combustion products extending around, and flowing away from, the outer surface of said propellant source.

A mechanical gun to gun delay for providing a desired time delay between the firing of a first gun and the firing of a second gun downhole without using a pyrotechnic fuse as the delay

A mechanical gun to gun delay for providing a desired time delay between the firing of a first gun and the firing of a second gun downhole without using a pyrotechnic fuse as the delay

A device and a method for managing registration and arrangement of a detonator are proposed. The device includes: a detonator arrangement part configured to arrange, in response to a request for registration of a detonator input by an operator, the detonator on a detonator hole number according to a blasting pattern pre-designed on the basis of arrangement information input by the operator or arranging the detonator on the basis of an arrangement pattern of pre-arranged detonators; an arrangement result analysis part configured to analyze an arrangement result of the detonator that is arranged according to the arrangement pattern of the pre-arranged detonators; and an arrangement error notification part configured to provide notification to the operator when the analyzed arrangement result has an error.

Disclosed is an ignition arrangement for multiple pyrotechnic articles, which includes a moulded body including a housing for an igniter cord, and also including sides and partitions. The housing is formed by pairs of parallel ribs separated from one another, the ribs of each pair being joined under the igniter cord, thus forming the bottom of the moulded body. Aligned openings are provided in the igniter cord, having inclined opposing surfaces that converge transversely towards the inside of the igniter cord, such as to channel the ignition sparks scattered in the arrangement towards an area of an ignition fuse held against a corresponding opening, such that the fuse is ignited from the igniter cord and ignition spreads to a pyrotechnic element located outside the moulded body.

The present disclosure relates to an apparatus and method for controlling detonator blasting based on a danger radius, the apparatus including a danger radius setting unit that sets a danger radius for a detonator or a communication module, a blasting area setting unit that sets a blasting area in which a preset danger radius is reflected in a location value input during registration of the detonator or the communication module, an equipment location determination unit that determines a location of equipment possessed by an operator, and a blasting start control unit that controls so that blasting of the detonator is allowed only when the equipment is not located within the set blasting area as a result of the determination.

The present invention relates to an electronic delay detonator logging control device and a method therefor. The state and the connection of a plurality of electronic delay detonators connected in parallel and a trunk line are inspected before blasting so as to check for an incomplete connection and prevent a partial misfire, thereby inducing accurate blasting and enabling the stability of the electronic delay detonator to be improved. A log counter is assigned to the plurality of electronic delay detonators such that the plurality of electronic delay detonators can be blasted in desired blasting patterns or in sequence. In the event of a failure, a logging recovery mode is operated so as to recover connection information of the plurality of electronic delay detonators, and thus worker inconvenience is minimized during reconnection and re-registration operations such that work efficiency and convenience can be maximized.

A wellbore perforating system and method with reliable and safer connections in a perforating gun assembly is disclosed. The system/method includes a gun string assembly (GSA) deployed in a wellbore with multiple perforating guns attached to plural switch subs. The perforating guns are pre-wired with a cable having multi conductors; the multi conductors are connected to electrical ring contacts on either end of the perforating guns. The switch subs are configured with electrical contacts that are attached to the electrical contacts of the perforating guns without the need for manual electrical connections and assembly in the field of operations. The system further includes detonating with a detonator that is positioned upstream of the perforating gun. The detonator is wired to a switch that is positioned downstream of the perforating gun.

A wellbore perforating system and method with reliable and safer connections in a perforating gun assembly is disclosed. The system/method includes a gun string assembly (GSA) deployed in a wellbore with multiple perforating guns attached to plural switch subs. The perforating guns are pre-wired with a cable having multi conductors; the multi conductors are connected to electrical ring contacts on either end of the perforating guns. The switch subs are configured with electrical contacts that are attached to the electrical contacts of the perforating guns without the need for manual electrical connections and assembly in the field of operations. The system further includes detonating with a detonator that is positioned upstream of the perforating gun. The detonator is wired to a switch that is positioned downstream of the perforating gun.