Perforating gun with integrated initiator
AssigneeSchlumberger Technology Corporation
InventorsRaphael Rogman, Allan Goldberg, Vinod Chakka, Pedro Hernandez, Roman Munoz, Richard Lee Warns, Hao Liu, Marcos Calderon, Edward Harrigan, Kenneth Randall Goodman
Life of this patent
Estimating the term…
Abstract
A wellbore perforating device includes at least one perforating charge and an initiator. The initiator can include a ballistic train adapted to fire the at least one perforating charge. The ballistic train can include a detonator and a detonator cord. A ballistic interrupt shutter can be disposed between the detonator and the detonator cord. The ballistic interrupt shutter can prevent firing of the detonator cord.
Claims19
A wellbore perforating device, comprising:
- at least one perforating charge;
- an initiator comprising a ballistic train adapted to fire the at least one perforating charge, the ballistic train comprising a detonator and a detonator cord;
- and
- a ballistic interrupt shutter disposed between the detonator and the detonator cord, wherein the ballistic interrupt shutter prevents firing of the detonator cord, wherein said ballistic interrupt shutter comprises a metallic layer disposed adjacent a layer of thermoplastic material.
A perforating gun, comprising:
- a loading tube having an initiator disposed therein, the initiator comprising a detonator and a detonator cord;
- at least one perforating charge disposed within the loading tube;
- and
- a ballistic interrupt shutter disposed between the detonator and the detonator cord, wherein the ballistic interrupt shutter comprises a metallic layer disposed adjacent a layer of thermoplastic material.
A method of using a wellbore perforating device, comprising:
- inserting an initiator into a loading tube of the wellbore perforating device, the initiator comprising:
- a detonator and a detonator cord;
- and
- a ballistic interrupt shutter disposed between the detonator and the detonator cord, wherein the ballistic interrupt shutter comprises a metallic layer disposed adjacent a layer of thermoplastic material;
- lowering the wellbore perforating device into a wellbore;
- executing a first command releasing the ballistic interrupt shutter from between the detonator and the detonator cord;
- and
- executing a second command firing the wellbore perforating device.
Dependencies are inferred from the claim text.