Perforating gun and detonator assembly
According to an aspect, a perforating gun assembly and a detonator assembly is provided. The detonator assembly includes at least a shell, selective detonation, and more than one electrically contactable component that is configured for being electrically contactably received by the perforating gun assembly without using a wired electrical connection, but rather forms the electrical connection merely by contact with at least one of the more than one electrically contactable components. A method of assembling the perforating gun assembly including the detonator assembly is also provided.
1. A wirelessly-connectable selective detonator assembly configured for being electrically contactably received within a perforating gun assembly without using a wired electrical connection, comprising:
a detonator shell configured for housing a fuse head and an electronic circuit board, wherein the electronic circuit board is connected to the fuse head and is configured to allow for selective detonation of the detonator assembly;
a detonator head extending from one end of the detonator shell, the detonator head comprising an electrically contactable line-in portion, an electrically contactable line-out portion, and an insulator positioned between the line-in portion and the line-out portion, wherein the insulator electrically isolates the line-in portion from the line-out portion; and
an electrically contactable ground portion,
wherein the ground portion in combination with the line-in portion and the line-out portion are configured to replace the wired electrical connection and complete the electrical connection merely by contact,
wherein at least a portion of the detonator shell is configured as the ground portion, and
wherein the detonator assembly is configured to be electrically contactingly received within a detonator positioning assembly within the perforating gun assembly without using the wired electrical connection, and to selectively receive an ignition signal to fire the perforating gun assembly.
2. The detonator assembly of claim 1 , further comprising:
a capacitor positioned on the electronic circuit board, the capacitor configured to be discharged to initiate the detonator assembly upon receipt of a digital firing sequence via the ignition signal, the ignition signal being electrically relayed directly through the line-in portion and the line-out portion of the detonator head.
3. The detonator assembly of claim 1 , wherein the detonator assembly is fluid disabled.
4. The detonator assembly of claim 1 , further comprising:
means for ensuring immunity to stray current or voltage or radio frequency signals, such that the detonator assembly is not unintentionally armed or unintentionally initiated.
5. The detonator assembly of claim 1 , wherein the detonator head is disk-shaped and the detonator shell is shaped as a hollow cylinder, the detonator head is complementarily sized and shaped to be received and seated within the detonator positioning assembly in at least a semi-fixed position.
6. The detonator assembly of claim 1 , wherein the detonator assembly is configured for being electrically contactably received within a modular perforating gun assembly.
7. The detonator assembly of claim 1 , wherein the insulator is sized to have an insulator diameter that is substantially equal to a line-out diameter of the line-out portion, the line-in portion has a line-in diameter that is smaller than the insulator diameter and the line-in portion is positioned within a depression of the insulator, the depression being located in a substantially central portion of the insulator.
8. The detonator assembly of claim 1 , wherein the detonator head is injection molded.