Provided is a method of operating a blasting system. A blasting device is synchronized with a detonator. A unit group including a plurality of the detonators is set. A first detonator is set from among the plurality of detonators of the unit group. A wireless network based on the first detonator is set. The blasting device performs communications with the plurality of detonators of the unit group via the first detonator.

A system and method of effecting time synchronization between disparate nodes on a network where at least one node has knowledge of the true network time, at least one other node requires synchronization to the true network time, and a third node is utilized to facilitate the synchronization process.

A detonator includes a control circuit and a charging circuit. The control circuit receives a first signal transmitted using a voltage applied to a cable by a blasting device and transmits a second signal to the blasting device using a current flowing to the cable. The charging circuit performs a charging operation by receiving the voltage through the cable. The charging circuit stops the charging operation while the control circuit transmits the second signal to the blasting device.

A device and a method for providing a converted blasting pattern coordinate are proposed. The device for providing a converted blasting pattern coordinate includes: a distance difference calculation part configured to preset any one of detonator holes as a reference point, and to calculate each distance difference between X-coordinates and Y-coordinates of the reference detonator hole and the remaining detonator holes; a polar coordinate value derivation part configured to derive polar coordinate values of the detonator holes; a relative angle calculation part configured to calculate a relative angle between first and second detonator holes; and a blasting pattern coordinate conversion part configured to correct angles of the remaining detonator holes by reflecting the relative angle between the first and second detonator holes, and to provide converted blasting pattern coordinates that are obtained such that latitude and longitude coordinates of the detonator holes are converted based on the corrected angles.

A detonator includes a control circuit and a charging circuit. The control circuit receives a first signal transmitted using a voltage applied to a cable by a blasting device and transmits a second signal to the blasting device using a current flowing to the cable. The charging circuit performs a charging operation by receiving the voltage through the cable. The charging circuit stops the charging operation while the control circuit transmits the second signal to the blasting device.

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.

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 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.

Provided is a method of operating a wireless blasting system in which a blasting device and electric detonators perform communications via a wireless network. Detonator reference times of the electric detonators are synchronized with a blasting reference time of the blasting device. Communication delay times of the electric detonators are calculated. The blasting device transmits a blasting command including a blasting time to the electric detonators. Whether or not the electric detonators are ready to perform blasting is determined by determining initial input states and detonator states of the electric detonators. When the electric detonators are ready, the electric detonators perform the blasting by counting ignition initialization times thereof in which the communication delay times are reflected.