Patents-Review.com
ClassID:

135613 ⎘

E21B43/11857 - CPC Classification

Classification description:

Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells; Perforators; Permeators; Gun or shaped-charge perforators; Ignition systems firing indication systems

Recent Application in this class:
#1
20260043317
2026-02-12

DISPOSABLE PERFORATION TOOL

 #2
20250109668
2025-04-03

SYSTEM AND METHOD FOR SURFACE DEVICES USED FOR DOWNHOLE PERFORATIONS

 #3
20240426196
2024-12-26

ELECTRONIC DEVICE AND METHOD FOR ORIENTATION-MEASURING DEVICE FOR DOWNHOLE PERFORATIONS

 #4
20240019234
2024-01-18

Addressable ignition stage for enabling a detonator/ignitor

 #5
20230383644
2023-11-30

SYSTEM AND METHOD FOR MONITORING WELL OPERATIONS

 #6
20230250711
2023-08-10

CONTROL MODULE FOR A DETONATION SUB AND A DETONATION SUB

 #7
20220333468
2022-10-20

Sensor system for detecting fiber optic cable locations and performing flow monitoring downhole

 #8
20220298896
2022-09-22

Micro-controller-based switch assembly for wellbore systems and method

 #9
20220136813
2022-05-05

Addressable Ignition Stage for Enabling a Detonator/Ignitor

 #10
20220034221
2022-02-03

Switch device with non-addressable scheme for wellbore operations

 #11
20210123331
2021-04-29

Micro-controller-based switch assembly for wellbore systems and method

 #12
20210079769
2021-03-18

Hydraulic underbalance initiated safety firing head, well completion apparatus incorporating same, and method of use

 #13
20210079768
2021-03-18

Downhole shock sensor

 #14
20210054724
2021-02-25

Ballistic coupling of perforating arrays

 #15
20190390536
2019-12-26

Micro-controller-based switch assembly for wellbore systems and method

 #16
20190162058
2019-05-30

Hydraulic underbalance initiated safety firing head, well completion apparatus incorporating same, and method of use

 #17
20190063885
2019-02-28

Perforating systems with insensitive high explosive

 #18
20190017356
2019-01-17

Retaining and positioning end cap for downhole setting tool power charges

 #19
20180119538
2018-05-03

System and method for downhole ignition detection

 #20
20170241245
2017-08-24

Perforating systems with insensitive high explosive

 #21
20170241244
2017-08-24

Perforating systems with insensitive high explosive

 #22
20160333676
2016-11-17

Select fire switch control system and method

 #23
20160298438
2016-10-13

Refracturing method using spaced shaped charges straddled with isolators on a liner string

 #24
20150337653
2015-11-26

Well monitoring by means of distributed sensing means

 #25
20150096752
2015-04-09

System and method for performing a perforation operation

 #26
20150000509
2015-01-01

Methods and systems for controlling networked electronic switches for remote detonation of explosive devices

 #27
20130161007
2013-06-27

PULSE DETONATION TOOL, METHOD AND SYSTEM FOR FORMATION FRACTURING

 #28
20120325463
2012-12-27

Device for intervention in a well comprising a pyrotechnic system, installation and method associated therewith

 #29
20120227962
2012-09-13

NON-INTRUSIVE FLOW INDICATOR

 #30
20120175109
2012-07-12

Non-intrusive flow indicator

 #31
20120155219
2012-06-21

System and Method for Acoustic Recording in Well Bottomhole Assembly while Firing A Perforating Gun

 #32
20120111560
2012-05-10

Fracture monitoring

 #33
20120063267
2012-03-15

Well Monitoring by Means of Distributed Sensing Means

 #34
20120057432
2012-03-08

Well monitoring by means of distributed sensing means

 #35
20110066378
2011-03-17

Apparatus and Methods for Controlling and Communicating with Downhole Devices

 #36
20100286800
2010-11-11

Tractor communication/control and select fire perforating switch simulations

 #37
20100230105
2010-09-16

Perforating with wired drill pipe

 #38
20090168606
2009-07-02

Interactive and/or secure activation of a tool

 #39
20090084535
2009-04-02

Apparatus string for use in a wellbore

 #40
20080245255
2008-10-09

Modular time delay for actuating wellbore devices and methods for using same

 #41
20070125540
2007-06-07

Monitoring an explosive device

 #42
20070125530
2007-06-07

Interactive and/or secure activation of a tool

 #43
20060054317
2006-03-16

Method and apparatus for a tubing conveyed perforating guns fire identification system using fiber optics

 #44
20050045331
2005-03-03

Secure activation of a downhole device