公开(公告)号：US20240352833A1

公开(公告)日：2024-10-24

申请号：US18644275

申请日：2024-04-24

Applicant: Oso Perforating, LLC

Inventor： Nathan McFarland ,  Varun Garg ,  Jeremy Ursi ,  Kerron James ,  Peter Galligan

IPC: E21B43/1185 ,  F42D1/05

CPC classification number: E21B43/1185 ,  F42D1/05

Abstract: A perforating gun used in oil and gas completions operations, the perforating gun including a ballistic interrupter actuable from a disarmed state or configuration, in which ballistic communication between a detonator and a detonation cord is impeded, to an armed state or configuration, in which ballistic communication between the detonator and the detonating cord is permitted. A gun string includes the perforating gun and one or more additional perforating guns substantially identical to the perforating gun.

公开(公告)号：US12078461B2

公开(公告)日：2024-09-03

申请号：US17378826

申请日：2021-07-19

Applicant: Schlumberger Technology Corporation

Inventor： Kenneth Randall Goodman

IPC: F42B3/18 ,  E21B43/1185 ,  F42B3/182 ,  F42B3/188 ,  F42D1/04 ,  F42D1/05

CPC classification number: F42B3/18 ,  F42B3/182 ,  F42B3/188 ,  F42D1/04 ,  F42D1/05 ,  E21B43/1185

Abstract: A radio frequency attenuating switch including a switch having a first input for connection to an electrical power supply and first and second output leads for connecting a device such as a detonator. One or more RF mitigation devices are connected within one or more of the output leads.

公开(公告)号：US20240230300A1

公开(公告)日：2024-07-11

申请号：US18008716

申请日：2022-10-07

Applicant: HANWHA CORPORATION

Inventor： Jeong Ho Choi ,  Se Ho Kim

IPC: F42D1/05 ,  F42C11/00 ,  F42C19/12 ,  G01R31/40 ,  H02J7/34

CPC classification number: F42D1/05 ,  F42C11/001 ,  F42C19/12 ,  G01R31/40 ,  H02J7/34 ,  H02J2207/50

Abstract: A device and a method thereof for operating an electronic detonator having an auxiliary power function are proposed. The device is configured to include a power supply unit configured to supply power to a power source unit of the detonation capacitor and a power source unit of the operation capacitor, a power state determination unit configured to determine a state of the power charged in the power source unit of the operation capacitor, and an auxiliary power supply request unit configured to request auxiliary power supply to the power source unit of the detonation capacitor when the determined state of the power charged in the power source unit of the operation capacitor falls within a preset abnormal power state range.

公开(公告)号：US12024986B2

公开(公告)日：2024-07-02

申请号：US17995975

申请日：2021-04-15

Applicant: Schlumberger Technology Corporation

Inventor： Erick Lowe ,  Hari Prakash Kalakonda ,  Atsushi Nakano ,  Bertha Wang

IPC: E21B43/1185 ,  F42D1/05

CPC classification number: E21B43/1185 ,  F42D1/05

Abstract: A downhole ignition assembly is described herein. The downhole ignition assembly has a switch container having a longitudinal axis, the switch container having a first portion that accommodates a switch circuit in an orientation transverse to the longitudinal axis, and a second portion that contacts an igniter disposed in the second portion, the first portion having a contact that makes electrical contact with a tool coupled to the downhole ignition assembly.

公开(公告)号：US20240133275A1

公开(公告)日：2024-04-25

申请号：US18360364

申请日：2023-07-26

Applicant: Schlumberger Technology Corporation

Inventor： Indranil Ghosh ,  Anjali Vijay Dhobale ,  Richard Lee Warns ,  Juan Carlos Luna Diaz ,  Andreas Hendrawinata ,  Tommy Nguyen ,  Sonia James

IPC: E21B43/117 ,  E21B43/11 ,  E21B43/114 ,  E21B43/116 ,  E21B43/1185 ,  E21B43/119 ,  F42D1/05

CPC classification number: E21B43/117 ,  E21B43/11 ,  E21B43/114 ,  E21B43/116 ,  E21B43/1185 ,  E21B43/119 ,  F42D1/05

Abstract: A detonation module for a perforation tool is described herein. The detonation module includes a detonator, a switch circuit disposed in a fluid-sealed housing and electrically coupled to the detonator, a shielding circuit coupled to the switch circuit, an annular electrical contact electrically coupled to the switch circuit, and an annular, electrically conductive, compressive member to form a compressive electrical connection with an end of a perforation unit.

公开(公告)号：US11929570B2

公开(公告)日：2024-03-12

申请号：US17127639

申请日：2020-12-18

Applicant: Hunting Titan, Inc.

Inventor： Dale Langford ,  Andy Lane ,  Rick Blain

IPC: H01R13/24 ,  E21B17/02 ,  E21B43/119 ,  F42C19/06 ,  H01R13/08 ,  E21B43/1185 ,  F42D1/04 ,  F42D1/05 ,  H01R13/533

CPC classification number: H01R13/08 ,  E21B17/0285 ,  E21B43/119 ,  F42C19/06 ,  E21B43/1185 ,  F42D1/04 ,  F42D1/05 ,  H01R13/533

Abstract: An electrical connector apparatus for use in a downhole tool comprising a housing, a contact screw within outer threads and inner threads, a contact plunger within the inner bore of the housing and a second cylinder protruding from the first cylinder. The contact spring is located between the contact plunger and the contact screw and pre-loads the contact plunger within the housing.

公开(公告)号：US11906279B2

公开(公告)日：2024-02-20

申请号：US17675372

申请日：2022-02-18

Applicant: DynaEnergetics Europe GmbH

Inventor： Christian Eitschberger

IPC: F42D1/05 ,  F42D1/04

CPC classification number: F42D1/05 ,  F42D1/043

Abstract: An electrical connector may include a connector body extending along a longitudinal axis, a first electrical contact provided at a first end of the connector body, a first aperture provided in the first end of the connector body, a bore provided in an interior of the connector body and connected to the first aperture, and a conductive fixed body provided within the bore. The conductive fixed body may include a first contact surface on a first side of the conductive fixed body facing the first electrical contact along the longitudinal axis. A first spring may be provided in the bore between the first contact surface and the first electrical contact, and the first spring may be in contact with the first contact surface and the first electrical contact.

公开(公告)号：US11852455B2

公开(公告)日：2023-12-26

申请号：US17422251

申请日：2020-01-27

Applicant: DETNET SOUTH AFRICA (PTY) LTD

Inventor： Michiel Jacobus Kruger ,  Daniel Auguste Maurissens ,  Albertus Abraham Labuschagne ,  Andre Louis Koekemoer

IPC: F42D1/05

CPC classification number: F42D1/05

Abstract: A detonator which is used with a shock tube or a fibre optic cable and wherein an incident light signal is passed through a first impedance for communication purposes and a light signal associated with initiation of the detonator is passed through a second impedance which is less in value than the first impedance.

公开(公告)号：US11851993B2

公开(公告)日：2023-12-26

申请号：US17572379

申请日：2022-01-10

Applicant: G&H Diversified Manufacturing LP

Inventor： Benjamin Vascal Knight ,  James Edward Kash ,  Joe Noel Wells

IPC: E21B43/1185 ,  F42D1/05 ,  E21B23/00 ,  E21B23/06 ,  E21B43/117 ,  E21B43/119

CPC classification number: E21B43/1185 ,  E21B23/00 ,  E21B23/065 ,  E21B43/117 ,  E21B43/119 ,  F42D1/05

Abstract: A method includes assembling a first tool string to include at least one original perforating gun and an original gun switch in communication with the original perforating charge, and inserting the first tool string into a first wellbore. The method also includes retrieving the first tool string from the first wellbore and recovering the original gun switch from the first tool string, assembling a new tool string to include at least one new perforating gun, wherein the new tool string further includes the recovered original gun switch whereby the original gun switch is in communication with the new perforating charge, and inserting the new tool string into at least one of the first wellbore and a different wellbore, and delivering a signal to the original gun switch to initiate detonation of the second perforating gun.

公开(公告)号：US11795792B2

公开(公告)日：2023-10-24

申请号：US17835353

申请日：2022-06-08

Applicant: GEODYNAMICS, INC.

Inventor： Roger Archibald ,  Jason Ansley ,  Brad Perry

IPC: E21B43/1185 ,  H01H47/02 ,  E21B47/12 ,  F42D1/05

CPC classification number: E21B43/1185 ,  E21B43/11857 ,  E21B47/12 ,  F42D1/05 ,  H01H47/02

Abstract: A switch assembly, which is part of a chain of switch assemblies. The switch assembly includes a micro-controller PB that has no address, a thru-line switch, and a detonator switch. The micro-controller PB is configured to directly communicate with an upstream or downstream switch assembly through a pulsing scheme, and the micro-controller PB receives no command from a surface controller.