Back to results
US 12,331,633 B2Granted
High voltage protection and receiver saturation prevention apparatus with high voltage peeking functions for downhole logging
AssigneeHalliburton Energy Services, Inc.
InventorsPeng Li, Ziyang Li
Life of this patent
Estimating the term…
Abstract
A system for high voltage protection may comprise a high voltage protection module electrically connected to a transmitter module and a receiver module and a muting module connected to the high voltage protection module and the receiver module. A method for high voltage protection may comprise disposing a downhole tool into a wellbore, transmitting an excitation signal from the transmitter module to transceiver as a high voltage pulse signal to the high voltage protection module, reducing the high voltage pulse signal with the high voltage protection module, and preventing saturation of the receiver with a low impedance interface from the muting module.
Claims21
A system comprising:
- a high voltage protection module electrically connected to a transmitter module and a receiver module, wherein the high voltage protection module comprises a first resistor and a second resistor that are in parallel;
- a high voltage peeking module wherein the high voltage peeking module measures a firing voltage at a transceiver;
- and
- a muting module connected to the high voltage protection module and the receiver module, wherein the muting module is configured to prevent saturation of the receiver module with a low impedance interface.
1 more element
A downhole tool comprising:
- a transmitter module, wherein the transmitter module is configured to transmit a high voltage pulse signal from an output of the transmitter module;
- a high voltage protection module connected to the output of the transmitter module and an input of a receiver module, wherein the high voltage protection module is configured to reduce the high voltage pulse signal to a receiver, and wherein the high voltage protection module comprises a first resistor and a second resistor that are in parallel;
- a transceiver connected to the output of the transmitter module and a high voltage protection module input, wherein the transceiver is configured to emit an excitation and sense a response;
- a muting module input connected to the high voltage protection module output and the input of the receiver module, wherein a muting module is configured to prevent saturation of the receiver module with a low impedance interface;
- and
- an analog to digital converter connected to a receiver module output.
3 more elements
A method comprising:
- disposing a downhole tool into a wellbore, wherein the downhole tool comprises:
- a digital control system;
- a transceiver configured to emit a pressure pulse;
- a transmitter module configured to transmit an excitation signal;
- a high voltage protection module with a first resistor and a second resistor that are in parallel connected to the transmitter module;
- a muting module connected to the high voltage protection module;
- a receiver connected to the muting module;
- and
- an analog to digital converter;
- transmitting the excitation signal from the transmitter module to the transceiver as a high voltage pulse signal to the high voltage protection module;
- reducing the high voltage pulse signal with the high voltage protection module;
- and
- preventing saturation of the receiver with a low impedance interface from the muting module.
10 more elements
A system comprising:
- a high voltage protection module electrically connected to a transmitter module and a receiver module;
- and
- a muting module connected to the high voltage protection module and the receiver module wherein the muting module comprises a first transistor and a second transistor and is configured to prevent saturation of the receiver module with a low impedance interface and an amplifier and a transformer winding, wherein a digital control system is connected to the amplifier and the digital control system is configured to operate the amplifier, wherein the muting module is configured to remain engaged after transmission of a pressure pulse.
A system comprising:
- a high voltage protection module electrically connected to a transmitter module and a receiver module, wherein the high voltage protection module comprises a first resistor and a second resistor that are in parallel and each individually ten kilo ohms or greater;
- a third resistor and a fourth resistor each individually less than one ohm;
- a high voltage peeking module configured to monitor voltage drop across the third resistor and the fourth resistor, wherein the third resistor and the fourth resistor are at two different locations, wherein the high voltage peeking module measures a firing voltage at a transceiver;
- and
- a muting module connected to the high voltage protection module and the receiver module, wherein the muting module is configured to prevent saturation of the receiver module with a low impedance interface.
2 more elements
Dependencies are inferred from the claim text.