A wellbore perforating system including a multi-component universal initiator. The universal initiator is a “plug and play” initiator able to accommodate a wide range of perforating gun system.

A wellbore perforating system including a multi-component universal initiator. The universal initiator is a “plug and play” initiator able to accommodate a wide range of perforating gun system.

A detonator positioning device for use with a detonator in a perforating gun assembly is described. The detonator positioning device is configured for electrically contactably forming an electrical connection within the perforating gun housing by contact. The detonator positioning device includes a body having a first end, a second end, and a central bore extending between the first and second ends. The central bore is adapted for receiving one or more electrically contactable components of a detonator. The detonator positioning device aligns at least one of the one or more electrically contactable components to form an electrical connection with a bulkhead assembly.

A power charge and method for actuating a wellbore tool with a power charge. The power charge may include a groove formed in the outer surface of the power charge. The power charge may include a first volume containing a first energetic material and a second volume containing a second energetic material that is a faster burning material compared to the first energetic material. The wellbore tool may include a tool body wall defining a power charge cavity. The groove formed in the outer surface of the power charge may define a gas pressure path between the tool body wall and the power charge, within the power charge cavity, when the power charge is inserted into the power charge cavity. The method may include coupling an initiator to the wellbore tool and initiating combustion of the first energetic material and the second energetic material to actuate the wellbore tool.

A power charge and method for actuating a wellbore tool with a power charge. The power charge may include a groove formed in the outer surface of the power charge. The power charge may include a first volume containing a first energetic material and a second volume containing a second energetic material that is a faster burning material compared to the first energetic material. The wellbore tool may include a tool body wall defining a power charge cavity. The groove formed in the outer surface of the power charge may define a gas pressure path between the tool body wall and the power charge, within the power charge cavity, when the power charge is inserted into the power charge cavity. The method may include coupling an initiator to the wellbore tool and initiating combustion of the first energetic material and the second energetic material to actuate the wellbore tool.

Various implementations include a self-coupling initiator including one or more integrated features that allow the initiator to be installed within a housing tube without a forming or fastening operation. The integrated features are able to be coupled to a drop protection cap. The drop protection cap extends around at least a portion of a head portion of the initiator and abuts the structure of the outer housing so that force imparted on the drop protection cap from a drop test is transferred to a direct compression load on the cap and housing, instead of the force being transferred to the initiator. In addition, the initiator may include one or more clip features that allow the initiator to clip into the housing. In such embodiments, the drop protection cap may also prevent the clips from being disengaged with the housing.

Various implementations include a self-coupling initiator including one or more integrated features that allow the initiator to be installed within a housing tube without a forming or fastening operation. The integrated features are able to be coupled to a drop protection cap. The drop protection cap extends around at least a portion of a head portion of the initiator and abuts the structure of the outer housing so that force imparted on the drop protection cap from a drop test is transferred to a direct compression load on the cap and housing, instead of the force being transferred to the initiator. In addition, the initiator may include one or more clip features that allow the initiator to clip into the housing. In such embodiments, the drop protection cap may also prevent the clips from being disengaged with the housing.

The present disclosure relates to a connector for a blast-triggering device, said connector including a connector head in which a rear end thereof is integrally connected with a rear surface of a connector body, an upper surface thereof is formed in a curved surface extending from the rear end thereof to a front end thereof, a tube insertion portion is provided between a lower surface thereof and the connector body so that a plurality of shock tubes is fitted therein, and the front end thereof is separated from the connector body. Thus, it is possible to maintain the shape of the connector during detonation, thereby minimizing the generation of debris and improving the safety at the time of detonation. In addition, it is possible to prevent damage to the plurality of shock tubes, thereby preventing a cut-off phenomenon caused by damaged shock tubes during detonation.

A booster assembly (60) for use in a drill and blast operation comprises in co-axial alignment: (a) a booster (65) for initiating an explosion of an explosives material in a hole (90) in a pit floor (91) as part of a drill and blast operation, (b) a spool (63) and a detonation cord (66) wrapped around the spool in a storage position outside the hole and connected to the spool and to the booster, and (b) a stake (61). The spool allows the detonation cord to be unwound from the spool as the booster is moved from the storage position to an operative depth in the hole and the spool remains in the storage position. The stake is provided for locating the spool in the pit floor proximate the hole after the booster is at the operative depth in the hole.

A booster assembly (60) for use in a drill and blast operation comprises in co-axial alignment: (a) a booster (65) for initiating an explosion of an explosives material in a hole (90) in a pit floor (91) as part of a drill and blast operation, (b) a spool (63) and a detonation cord (66) wrapped around the spool in a storage position outside the hole and connected to the spool and to the booster, and (b) a stake (61). The spool allows the detonation cord to be unwound from the spool as the booster is moved from the storage position to an operative depth in the hole and the spool remains in the storage position. The stake is provided for locating the spool in the pit floor proximate the hole after the booster is at the operative depth in the hole.