Inventor
Weijun Guo
Inventor
Houston, TX, US
Overview
Patents· 60 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G01Vprimary
G01VGeophysics36%
E21BEarth or rock drilling24%
G01TMeasurement of nuclear or x-radiation10%
G01NInvestigating or analysing materials by determining their chemical or physical properties6%
G21KHandling of particles or ionising radiation not otherwise provided for5%
H05HPlasma technique5%
G21GConversion of chemical elements4%
G21BFusion reactors1%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution1%
C04BLime, magnesia1%
PatentTitleYear
11,128,797Photographing apparatus, and control method and device applied to photographing apparatus202111,041,790Stress gradient loading test apparatus and method of accurately determining loading energy202110,753,193Heterogeneity profiling analysis for volumetric void space cement evaluation202010,677,040Material evaluation using nuclear logging tool202010,634,811Downhole neutron generators and methods to generate neutrons in a downhole environment202010,605,954Simultaneous evaluation of the volume and the position of voids in downhole cement202010,551,523Evaluating and imaging volumetric void space location for cement evaluation202010,539,414Determining tubing wall thickness202010,502,861Long-lifetime, high-yield, fast neutrons source201910,495,524Apparatus and method for monitoring production wells201910,480,306Cement evaluation with neutron-neutron measurement201910,459,112Determining a characteristic of a material surrounding a wellbore based on count rates of scattered photons201910,455,684Field-ionization neutron generator201910,438,713High output accelerator neutron source201910,408,968Field emission ion source neutron generator201910,393,917Cement evaluation with X-ray tomography201910,386,533Downhole tool apparatus, system, and methods201910,386,537Gamma-ray spectrometer calibration systems and methods201910,359,374Identification of annulus materials using formation porosity201910,288,763Long-lifetime, high-yield, fast neutrons source201910,288,749Photon collimation apparatus, methods, and systems201910,281,593Energy detection apparatus, methods, and systems201910,280,738Determination of radiation tracer distribution using natural gamma rays201910,274,638Downhole gamma-ray generators and systems to generate gamma-rays in a downhole environment201910,267,947Signal stabilization and calibration for neutron detection201910,240,451Downhole tomographic imaging201910,209,393Method to correct and pulsed neutron fan based interpretation for shale effects201910,209,395Formation independent cement evaluation with active gamma ray detection201910,209,378Photopeak location systems and methods201910,209,398Drilling fluid property determination201910,182,491Deuterium-deuterium neutron generators201910,156,657System and method of determining a value indicative of hydrogen index201810,145,978System and method of determining a value indicative of hydrogen index201810,126,433Energy detection apparatus, methods, and systems201810,067,261Downhole photon radiation detection using scintillating fibers201810,061,054Downhole annulus evaluation apparatus, systems, and methods201810,042,082Gamma ray measurement apparatus, systems, and methods201810,012,762Standoff determination20189,964,665Gamma-ray spectrometer calibration systems and methods20189,951,614Behind pipe evaluation using a nuclear density tool20189,910,185'Pulsed chemical neutron source'20189,840,912'Determining casing fluid capture cross section using gamma count rate ratio'20179,835,757Pulsed-neutron tool methods and systems for monitoring casing corrosion20179,835,731Detector packages20179,835,760Tritium-tritium neutron generator and logging method20179,766,367'Triple phase evaluation of formation fluids'20179,759,834'Method and apparatus for downhole photon imaging'20179,756,714'Nano-emitter ion source neutron generator'20179,726,623'Gamma analysis of cement'20179,690,006'Downhole logging system with azimuthal and radial sensitivity'20179,575,206'Downhole evaluation with neutron activation measurement'20179,557,441'Gain stabilization in a gamma ray detection apparatus'20179,389,335'Pulsed neutron tool for downhole oil typing'20169,383,472'Position-sensitive gamma detectors'20168,996,315'Method and system of determining a value indicative of gas saturation of a formation'20158,898,045'System and method of predicting gas saturation of a formation using neural networks'20148,881,808'Method of determining a value indicative of fracture quality'20148,692,185'Method and system of determining a parameter associated with a formation corrected for neutrons produced'20148,510,050'Systems and methods for downhole fluid typing with pulsed neutron logging'20138,346,481'Method and system of determining a value indicative of gas saturation of a formation'2013Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2013–2017Patents assigned to GUO WEIJUN (6)· patent assignee history
2013–2014Patents assigned to HALLIBURTON ENERGY SERV INC (5)· patent assignee history
2013–2015Patents assigned to JACOBSON LARRY A (3)· patent assignee history
2013–2015Patents assigned to DORFFER DANIEL F (2)· patent assignee history
2013–2014Based in Katy, TX, US· patent location history
2014–2020Based in Houston, TX, US· patent location history
2015–2020Patents assigned to HALLIBURTON ENERGY SERVICES INC (53)· patent assignee history
2021Based in Shanghai, CN· patent location history
2021Based in Qingdao, CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HALLIBURTON ENERGY SERVICES INC | 53 | 2015–2020 |
| GUO WEIJUNself | 6 | 2013–2017 |
| HALLIBURTON ENERGY SERV INC | 5 | 2013–2014 |
| JACOBSON LARRY A | 3 | 2013–2015 |
| DORFFER DANIEL F | 2 | 2013–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Houston, Texas, US | 54 | 2014–2020 |
| Katy, Texas, US | 4 | 2013–2014 |
| Shanghai, CN | 1 | 2021 |
| Qingdao, CN | 1 | 2021 |