Ballistically safe wellbore tool
AssigneeDynaEnergetics Europe GmbH
InventorsChristian Eitschberger, Thilo Scharf
Life of this patent
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Abstract
A ballistically-safe wellbore tool may include an explosive device, an initiator including an initiating charge, and a bias member. A relative configuration of the explosive device and the initiator may be switchable between a first configuration, in which the initiating charge is at a ballistically safe distance from the explosive device, and a second configuration, in which the initiating charge is within a ballistically operable distance from the explosive device. The bias member is configured to bias the explosive device and the initiator to the first configuration.
Claims20
A ballistically-safe wellbore tool comprising:
- an explosive device;
- an initiator comprising an initiating charge;
- a bias member;
- and
- wherein a relative configuration of the explosive device and the initiator is movable between a first configuration, in which the initiating charge is at a ballistically safe distance from the explosive device, and a second configuration, in which the initiating charge is within a ballistically operable distance from the explosive device;
- and
- the bias member is configured to bias the explosive device and the initiator to the first configuration;
- wherein a relative rotational position of the explosive device and the initiator is changed between the first configuration and the second configuration.
A method of arming an explosive device in a wellbore tool, the method comprising:
- providing a first module comprising:
- an explosive device;
- an initiator comprising an initiating charge;
- and
- a bias member;
- wherein a relative configuration of the explosive device and the initiator is movable between a first configuration, in which the initiating charge is at a ballistically safe distance from the explosive device, and a second configuration, in which the initiating charge is within a ballistically operable distance from the explosive device;
- and
- the bias member is configured to bias the explosive device and the initiator to the first configuration via a biasing force;
- and
- arming the first module by coupling a second module to the first module;
- wherein the arming the first module comprises ballistically arming the first module by providing a coupling force to act against the biasing force such that the explosive device and the initiator transition from the first configuration to the second configuration;
- wherein a relative rotational position of the explosive device and the initiator is changed between the first configuration and the second configuration.
Dependencies are inferred from the claim text.