US 2019/0376775 A1 · CONDUCTIVE DETONATING CORD FOR PERFORATING GUN

Abstract

A detonating cord for using in a perforating gun includes an explosive layer and an electrically conductive layer extending around the explosive layer. The electrically conductive layer is configured to relay a communication signal along a length of the detonating cord. In an embodiment, a protective jacket extends around the electrically conductive layer of the detonating cord. The detonating cord may be assembled in a perforating gun to relay a communication signal from a top connector to a bottom connector of the perforating gun, and to propagate a detonating explosive stimulus along its length to initiate shaped charges of the perforating gun. A plurality of perforating guns, including the detonating cord, may be connected in series, with the detonating cord of a first perforating gun in communication with the detonating cord of a second perforating gun.

Claims20

Dependent claims

A perforating gun comprising:

a first contact;
a second contact;
a shaped charge arranged between the first contact and the second contact;
and
a detonating cord connected to the first contact, the shaped charge and the second contact, wherein the detonating cord comprises:
an explosive layer,
an electrically conductive layer extending around the explosive layer, and
a jacket covering the electrically conductive layer,
wherein the detonating cord is configured to relay a communication signal from the first contact to the second contact.

6 more elements

A perforating gun comprising:

a top connector;
a bottom connector;
at least one charge holder between the top connector and the bottom connector, wherein the charge holder is configured for holding a shaped charge;
and
a detonating cord extending from the top connector to the bottom connector, and connected to the shaped charge, wherein the detonating cord comprises:
an explosive layer,
an electrically conductive layer extending around the explosive layer,
a jacket extending around the electrically conductive layer,
a first contact portion configured for receiving a communication signal, and
a second contact portion spaced apart from the first contact portion and configured for outputting the communication signal,
wherein the detonating cord is configured to transfer the communication signal along a length of the detonating cord to an adjacent perforating gun.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/503,839Filed 5 Jul 2019

Priority

11 Jun 2018

Published

12 Dec 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification12 codes

E21B 43/119
Perforators; Permeators: details, e.g. for locating perforating place or direction
C06C 5/04
Fuses, e.g. fuse cords: detonating fuses
E21B 43/1185
Gun or shaped-charge perforators: ignition systems
F42B 1/02
Explosive charges characterised by form or shape but not dependent on shape of container: shaped or hollow charges

Family

Application62/683,083Us provisional application · filed 11 Jun 2018

Application16/152,933Division · filed 5 Oct 2018

Application16/503,839Division

US 10,386,168 B1Related patent

US 10,845,177 B2Related patent

US 2019/0376775 A1This patent

From the US filing history. Foreign family members aren’t listed.

Conductive detonating cord for perforating gun

Life of this patent

Conductive detonating cord for perforating gun

Life of this patent

Abstract

Claims20