Patents by Inventor Nolan C. Lerche

Nolan C. Lerche has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10557693
    Abstract: A downhole explosive detonation assembly with a high voltage electro-explosive initiator having an input high voltage power supply with a low impedance shunting fuse, a flexible electrical link and a capacitor discharge unit. The explosive detonation assembly is adapted to detonate detonating cord from the side.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: February 11, 2020
    Assignee: Hunting Titan, Inc.
    Inventors: Nolan C. Lerche, James E. Brooks
  • Publication number: 20180224248
    Abstract: A downhole explosive detonation assembly with a high voltage electro-explosive initiator having an input high voltage power supply with a low impedance shunting fuse, a flexible electrical link and a capacitor discharge unit. The explosive detonation assembly is adapted to detonate detonating cord from the side.
    Type: Application
    Filed: August 28, 2015
    Publication date: August 9, 2018
    Applicant: Hunting Titan, Inc.
    Inventors: Nolan C. LERCHE, James E. BROOKS
  • Patent number: 9851191
    Abstract: A downhole explosive detonation comprises a high voltage electro-explosive initiator comprising an input high voltage power supply with a low impedance shunting fuse, a flexible electrical link and a capacitor discharge unit. Explosive is initiated in a direction approximately parallel, or in another version perpendicular to the capacitor discharge unit. A unique configuration and construction of the assembly allows installation through a small service port in the gun housing structure for more efficient gun arming. A real time downhole voltage monitoring is described that transmits voltage readings to the surface during a firing sequence.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: December 26, 2017
    Assignee: Hunting Titan, Inc.
    Inventors: Nolan C. Lerche, James E. Brooks
  • Patent number: 9464508
    Abstract: A tool activation system and method includes receiving an authorization code of a user to verify access rights of a user to activate the tool. In one example, the authorization code is receive from a smart card. The environment around the tool, which can be in a wellbore, for example, is checked. In response to the authorization code and the checking of the environment, activation of the tool is enabled.
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: October 11, 2016
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Nolan C. Lerche, James E. Brooks, Simon L. Farrant, Edward H. Rogers
  • Patent number: 9394767
    Abstract: A method and apparatus is described for modifying downhole wellbore pressure at the instant that an explosive event occurs. By a significant temporary reduction in wellbore pressure, for example, an explosive cutter will be able to cut through thicker pipe in a deep well with high hydrostatic pressure. A favorable transient wellbore pressure is achieved by the selective timing of implosion and explosion devices, to improve the performance of certain explosive tools when subsequently initiated, such as shaped charge explosive cutters, severing tools, setting tools and perforating guns. As part of the system, each implosion or explosion device is initiated by a detonator having a preprogrammed control unit with a preselected timing delay to take advantage of the temporarily lowered wellbore pressure.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: July 19, 2016
    Assignee: Hunting Titan, Inc.
    Inventors: James E Brooks, Nolan C Lerche
  • Publication number: 20150292849
    Abstract: A downhole explosive detonation comprises a high voltage electro-explosive initiator comprising an input high voltage power supply with a low impedance shunting fuse, a flexible electrical link and a capacitor discharge unit. Explosive is initiated in a direction approximately parallel, or in another version perpendicular to the capacitor discharge unit. A unique configuration and construction of the assembly allows installation through a small service port in the gun housing structure for more efficient gun arming. A real time downhole voltage monitoring is described that transmits voltage readings to the surface during a firing sequence.
    Type: Application
    Filed: December 9, 2014
    Publication date: October 15, 2015
    Applicant: Hunting Titan, Inc.
    Inventors: Nolan C. Lerche, James E. Brooks
  • Patent number: 8931389
    Abstract: A downhole explosive detonation comprises a high voltage electro-explosive initiator comprising an input high voltage power supply with a low impedance shunting fuse, a flexible electrical link and a capacitor discharge unit. Explosive is initiated in a direction approximately parallel, or in another version perpendicular to the capacitor discharge unit. A unique configuration and construction of the assembly allows installation through a small service port in the gun housing structure for more efficient gun arming. A real time downhole voltage monitoring is described that transmits voltage readings to the surface during a firing sequence.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: January 13, 2015
    Inventors: James E. Brooks, Nolan C. Lerche
  • Patent number: 8884778
    Abstract: Apparatus and methods for controlling and communicating with one or more tools in a downhole tool string including a tractor, an auxiliary tractor tool, a logging tool, a safety sub, a release mechanism, a unit containing sensors for monitoring downhole conditions, a setting tool, and a perforating gun. Also provided are apparatus and methods for controlling and communicating with one or more perforating guns, release devices, and explosive devices in a string to be lowered into a wellbore. Control and communication are accomplished by sending signals from the surface to control switches in the control units on the tool, with redundant switches for safety, to state machines in the respective control units, “each state machine returning a signal verifying switch status to the surface. Control and power functions are accomplished with voltage of different polarities for safety.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: November 11, 2014
    Assignee: Hunting Titan, Inc.
    Inventors: Nolan C. Lerche, James E. Brooks
  • Publication number: 20140151018
    Abstract: Apparatus and methods for controlling and communicating with one or more tools in a downhole tool string including a tractor, an auxiliary tractor tool, a logging tool, a safety sub, a release mechanism, a unit containing sensors for monitoring downhole conditions, a setting tool, and a perforating gun. Control and communication are accomplished by sending signals from the surface to control switches in the control units on the tool, with redundant switches for safety, to state machines in the respective control units, each state machine returning a signal verifying switch status to the surface. The state machine need not return a signal including a unique identifier.
    Type: Application
    Filed: November 13, 2013
    Publication date: June 5, 2014
    Applicant: Hunting Titan, Ltd.
    Inventors: Nolan C. Lerche, James E. Brooks, Jesper Oluf Larsen, Brian Thomsen, Kasper Juul Larsen
  • Patent number: 8689868
    Abstract: Apparatus and methods for controlling and communicating with one or more tools in a downhole tool string including a tractor, an auxiliary tractor tool, a logging tool, a safety sub, a release mechanism, a unit containing sensors for monitoring downhole conditions, a setting tool, and a perforating gun. Control and communication are accomplished by sending signals from the surface to control switches in the control units on the tool, with redundant switches for safety, to state machines in the respective control units, each state machine returning a signal verifying switch status to the surface. The state machine need not return a signal including a unique identifier.
    Type: Grant
    Filed: January 7, 2008
    Date of Patent: April 8, 2014
    Assignee: Hunting Titan, Inc.
    Inventors: Nolan C. Lerche, James E. Brooks, Jesper Oluf Larsen, Brian Thomsen, Kasper Juul Larsen
  • Patent number: 8576090
    Abstract: Apparatus and methods for controlling and communicating with one or more tools in a downhole tool string including a tractor, an auxiliary tractor tool, a logging tool, a safety sub, a release mechanism, a unit containing sensors for monitoring downhole conditions, a setting tool, and a perforating gun. Also provided are apparatus and methods for controlling and communicating with one or more perforating guns, release devices, and explosive devices in a string to be lowered into a wellbore. Control and communication are accomplished by sending signals from the surface to control switches in the control units on the tool, with redundant switches for safety, to state machines in the respective control units, each state machine returning a signal verifying switch status to the surface. Control and power functions are accomplished with voltage of different polarities for safety.
    Type: Grant
    Filed: August 5, 2008
    Date of Patent: November 5, 2013
    Assignee: Hunting Titan, Ltd.
    Inventors: Nolan C. Lerche, James E. Brooks
  • Publication number: 20130220613
    Abstract: A method and apparatus is described for modifying downhole wellbore pressure at the instant that an explosive event occurs. By a significant temporary reduction in wellbore pressure, for example, an explosive cutter will be able to cut through thicker pipe in a deep well with high hydrostatic pressure. A favorable transient wellbore pressure is achieved by the selective timing of implosion and explosion devices, to improve the performance of certain explosive tools when subsequently initiated, such as shaped charge explosive cutters, severing tools, setting tools and perforating guns. As part of the system, each implosion or explosion device is initiated by a detonator having a preprogrammed control unit with a preselected timing delay to take advantage of the temporarily lowered wellbore pressure.
    Type: Application
    Filed: February 7, 2013
    Publication date: August 29, 2013
    Applicant: PRJ Solutions, LLC
    Inventors: James E. Brooks, Nolan C. Lerche
  • Publication number: 20130042780
    Abstract: A downhole explosive detonation comprises a high voltage electro-explosive initiator comprising an input high voltage power supply with a low impedance shunting fuse, a flexible electrical link and a capacitor discharge unit. Explosive is initiated in a direction approximately parallel, or in another version perpendicular to the capacitor discharge unit. A unique configuration and construction of the assembly allows installation through a small service port in the gun housing structure for more efficient gun arming. A real time downhole voltage monitoring is described that transmits voltage readings to the surface during a firing sequence.
    Type: Application
    Filed: August 17, 2012
    Publication date: February 21, 2013
    Inventors: James E. Brooks, Nolan C. Lerche
  • Patent number: 8230788
    Abstract: A detonator assembly is provided for use in oilfield operations to detonate an explosive downhole including a capacitor discharge unit and initiator electrically connected together to form a single unit. Further, provided is a method of fabricating an integrated detonator. Additionally, a method of use for an integrated detonating unit is provided.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: July 31, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: James E. Brooks, Nolan C. Lerche, Anthony Frank Veneruso
  • Publication number: 20120168226
    Abstract: A detonator assembly is provided for use in oilfield operations to detonate an explosive downhole including a capacitor discharge unit and initiator electrically connected together to form a single unit. Further, provided is a method of fabricating an integrated detonator. Additionally, a method of use for an integrated detonating unit is provided.
    Type: Application
    Filed: September 26, 2011
    Publication date: July 5, 2012
    Inventors: James E. Brooks, Nolan C. Lerche, Anthony F. Veneruso
  • Patent number: 8091477
    Abstract: A detonator assembly includes a capacitor, an initiator, a transformer and an addressable chip. The initiator is electrically connected to the capacitor, the transformer is mechanically and electrically connected to the capacitor and the addressable chip is mechanically and electrically connected to the transformer. The initiator may be bonded or fused to the capacitor, and the transformer may be bonded or fused to the capacitor. The capacitor, initiator, transformer and addressable chip form a unified integrated detonating unit.
    Type: Grant
    Filed: October 6, 2004
    Date of Patent: January 10, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: James E. Brooks, Nolan C. Lerche, Anthony F. Veneruso
  • Publication number: 20110090091
    Abstract: Apparatus and methods for controlling and communicating with one or more tools in a downhole tool string including a tractor, an auxiliary tractor tool, a logging tool, a safety sub, a release mechanism, a unit containing sensors for monitoring downhole conditions, a setting tool, and a perforating gun. Also provided are apparatus and methods for controlling and communicating with one or more perforating guns, release devices, and explosive devices in a string to be lowered into a wellbore. Control and communication are accomplished by sending signals from the surface to control switches in the control units on the tool, with redundant switches for safety, to state machines in the respective control units, “each state machine returning a signal verifying switch status to the surface. Control and power functions are accomplished with voltage of different polarities for safety.
    Type: Application
    Filed: August 5, 2008
    Publication date: April 21, 2011
    Inventors: Nolan C. Lerche, James E. Brooks
  • Publication number: 20110066378
    Abstract: Apparatus and methods for controlling and communicating with one or more tools in a downhole tool string including a tractor, an auxiliary tractor tool, a logging tool, a safety sub, a release mechanism, a unit containing sensors for monitoring downhole conditions, a setting tool, and a perforating gun. Also provided are apparatus and methods for controlling and communicating with one or more perforating guns, release devices, and explosive devices in a string to be lowered into a wellbore. Control and communication are accomplished by sending signals from the surface to control switches in the control units on the tool, with redundant switches for safety, to state machines in the respective control units, each state machine returning a signal verifying switch status to the surface. Control and power functions are accomplished with voltage of different polarities for safety.
    Type: Application
    Filed: August 5, 2009
    Publication date: March 17, 2011
    Inventors: Nolan C. Lerche, James E. Brooks
  • Publication number: 20100286800
    Abstract: Apparatus and methods for controlling and communicating with one or more tools in a downhole tool string including a tractor, an auxiliary tractor tool, a logging tool, a safety sub, a release mechanism, a unit containing sensors for monitoring downhole conditions, a setting tool, and a perforating gun. Control and communication are accomplished by sending signals from the surface to control switches in the control units on the tool, with redundant switches for safety, to state machines in the respective control units, each state machine returning a signal verifying switch status to the surface. The state machine need not return a signal including a unique identifier.
    Type: Application
    Filed: January 7, 2008
    Publication date: November 11, 2010
    Inventors: Nolan C. Lerche, James E. Brooks, Jesper Oluf Larsen, Brian Thomsen, Kasper Juul Larsen
  • Publication number: 20090168606
    Abstract: A tool activation system and method includes receiving an authorization code of a user to verify access rights of a user to activate the tool. In one example, the authorization code is receive from a smart card. The environment around the tool, which can be in a wellbore, for example, is checked. In response to the authorization code and the checking of the environment, activation of the tool is enabled.
    Type: Application
    Filed: March 10, 2009
    Publication date: July 2, 2009
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Nolan C. Lerche, James E. Brooks, Simon L. Farrant, Edward H. Rogers