Inventor

GUO WEIJUN

US82 patents

⚠️ This page may combine multiple inventors who share the name “GUO WEIJUN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

GUO WEIJUN

HALLIBURTON ENERGY SERVICES INC

Material evaluation using nuclear logging tool

Long-lifetime, high-yield, fast neutrons source

Borehole density measurement using pulsed neutron tool

Porosity determination using optimization of inelastic and capture count rates in downhole logging

Gamma-ray spectrometer calibration systems and methods

Downhole tool apparatus, system, and methods

Photopeak location systems and methods

Method and apparatus for downhole photon imaging

Downhole logging system with azimuthal and radial sensitivity

Three-component holdup measurement using pulsed neutron tool

Holdup algorithm using assisted-physics neural networks

Logging with joint ultrasound and X-ray technologies

Simultaneous evaluation of the volume and the position of voids in downhole cement

Field emission ion source neutron generator

Photon collimation apparatus, methods, and systems

Long-lifetime, high-yield, fast neutrons source

Formation independent cement evaluation with active gamma ray detection

Deuterium-deuterium neutron generators

Downhole photon radiation detection using scintillating fibers

Determination of near wellbore properties using natural gamma rays

Gamma ray measurement apparatus, systems, and methods

Downhole evaluation with neutron activation measurement

Method to correct and pulsed neutron fan based interpretation for shale effects

Downhole annulus evaluation apparatus, systems, and methods

Signal stabilization and calibration for neutron detection

Scandium target for a neutron generator for wellbore logging

Pulsed neutron logging mineralogy using oxide standards

Algorithm-free, data-centric multivariate inversion for pulsed neutron logging

Gamma spectral analysis

Compensated formation saturation using assisted physics and neural networks

Holdup measurement using quantized classification and categorized local regression

Evaluating cement integrity in a wellbore with multiple casing strings

Downhole neutron generators and methods to generate neutrons in a downhole environment

Determining a characteristic of a material surrounding a wellbore based on count rates of scattered photons

Field-ionization neutron generator

High output accelerator neutron source

Cement evaluation with X-ray tomography

Downhole gamma-ray generators and systems to generate gamma-rays in a downhole environment

Downhole tomographic imaging

Apparatus and method for monitoring production wells

Hot cathode for an ion source of a neutron generator

Time-gated energy spectra for removal of borehole capture background

Optimization of a target of a downhole neutron generator

GUO WEIJUN

Method and system of determining a parameter associated with a formation corrected for neutrons produced

Method and system of determining a value indicative of gas saturation of a formation

Pulsed-neutron tool methods and systems for monitoring casing corrosion

HALLIBURTON ENERGY SERV INC

Method of determining a value indicative of fracture quality

Method and system of determining a value indicative of gas saturation of a formation

CHEN DINGDING

System and method of predicting gas saturation of a formation using neural networks

NUCTECH CO LTD

Conveying device and inspection system