Software, IP and assets of Random Walk Engineering were purchased by Oilfield Nuclear Software, LLC.
Past Projects - Nuclear Tool Design & Characterization
- Design of a CsI based spectral gamma ray tool.
- Design and evaluation of a Co-60 density tool.
- Design of a small-diameter litho-density tool that logs below the bit.
- Design of a LWD neutron porosity tool using a Cf-252 neutron source.
- Design and characterization of a small diameter compensated neutron tool using a Cf-252 source.
- Design and characterization of a neutron porosity tool using thermal and epithermal detectors.
- Design and software development of a pulsed neutron capture (PNC) tool.
- Design and characterization of a new azimuthal LWD gamma-ray tool.
- Design and characterization of a new geochemical logging tool.
- Design of a borehole-fluid density measurement.
- Generic logging tool models that can be quickly changed to model existing tools.
Past Projects - Response and Environmental Corrections
- Characterization of compensated neutron tools and generation of EC nomographs (several projects).
- Characterization of a new small diameter compensated neutron tool.
- Design studies between an AmBe-based neutron porosity tool and a Cf-252 based tool.
- Determination of the optimal gating sequences for a PNC logging tool.
- The effect of different pressure housings on the response of a new natural gamma-ray tool.
- Processing of natural GR counts based on 256-channel, 5-window and 11 window processing.
- Alpha processing of spectral gamma-ray measurements.
- Evaluation and performance of different litho-density windows such as Be, titanium and PEEK.
- Response of a density tool in the presence of rugosity in formations from 2 to 5 g/cc.
- Benchmarking and calibration of older generation logging tools.
- Density-neutron cross plots for a new density-neutron tool string.
- Environmental corrections for a small GR tool centered in a borehole with heavy barite muds.
- Comparison of the porosity and hydrogen index responses of PNC tools vs. CNL tools.
- Environmental corrections for a neutron porosity tool in cased holes.
- Response of a neutron porosity tool to gas in the borehole.
- Comparison of a single-detector epithermal neutron measurement to a standard CNL measurement.
- Design of a compensated neutron porosity tool using low pressure He-3 detectors.
- Evaluation of modifying existing tools with shorter detector spacings to improve performance.
- Cased-hole environmental corrections for a small diameter Cf-252 based neutron porosity tool.
- Evaluation of sigma and neutron porosity measurements in the presence of CO2 and precipated NaCl salt.
- Comparison of new tool designs to earlier generation designs.
- Comparison of the sigma and gas responses of 5 different PNC tools.
- Environmental corrections for a PNC tool for a wide range of conditions such as hole size, casing size and weight, cement quality, clay content, water/oil/gas in the formation, and water/oil/gas in the borehole.
- Environmental corrections for a Si-activation measurement in gravel pack.
- PNC C/O response in a gravel pack.
- Comparison of two different PNC tools in the same well to calibrate one tool to the other.
- Detailed evaluation of the diffusion effect on PNC sigma measurements.
- Evaluation of an X-ray backscatter measurement.
- Evaluation of an X-ray fluid density measurement.
- The effect of invasion on nuclear measurements.
General Physics Studies / Design of Lab Equipment
- Modeling of the response from NaI, BGO, GSO, LaBr3, YAP, YSO, GYSO, CsI, and LaCl3 detectors.
- Dose rates from a neutron tool in a calibration/shield tank.
- Design of calibration fixtures and shield tanks for neutron tools.
- Dose rates on the outside of calibration tanks for PNC tools.
- Evaluation of a mineral logging density tool in calibration formations in Australia.
- Neutron porosity tool response in the University of Houston API Calibration facility.
- Gamma-Ray tool response in the University of Houston TUK Calibration wells.
- Evaluation of tool response in the Callisto calibration facility.
- Evaluation of neutron slowing-down and migration lengths in different formations for AmBe and 14Mev neutrons.
- Development of a new way to interpret elemental capture spectroscopy data.
- Comparison of simulated density spectra to lab measured spectra.
- Studies of neutron activation (oxygen, silicon, aluminum, iron, titanium, etc)
- Determination of the effectiveness of an PNC activation measurement to detect defects in liquid hydrogen fuel tanks (NASA project).
General Physics Studies / Design of Lab Equipment
- Modeling of the response from NaI, BGO, GSO, LaBr3, YAP, YSO, GYSO, CsI, and LaCl3 detectors.
- Dose rates from a neutron tool in a calibration/shield tank.
- Design of calibration fixtures and shield tanks for neutron tools.
- Dose rates on the outside of calibration tanks for PNC tools.
- Evaluation of a mineral logging density tool in calibration formations in Australia.
- Neutron porosity tool response in the University of Houston API Calibration facility.
- Gamma-Ray tool response in the University of Houston TUK Calibration wells.
- Evaluation of tool response in the Callisto calibration facility.
- Evaluation of neutron slowing-down and migration lengths in different formations for AmBe and 14Mev neutrons.
- Development of a new way to interpret elemental capture spectroscopy data.
- Comparison of simulated density spectra to lab measured spectra.
- Studies of neutron activation (oxygen, silicon, aluminum, iron, titanium, etc)
- Determination of the effectiveness of an PNC activation measurement to detect defects in liquid hydrogen fuel tanks (NASA )
Software Development
- Development of a Windows-based user interface for an old program that calculates the response of neutron, density and PNC capture logs in user-defined formations.
- VBA programs for Excel.
Proprietary Software Used In Nuclear Modeling
- Development of the NICO System which is used for all MCNP modeling studies.
- Various upgrades to the MCNP code to model scintillator detectors, for improved precision of detector count rates, and for neutron activation modeling.
- Generic logging tool models that can be quickly changed to model existing tools.
- Random Walk Engineering maintains a CPU cluster of 58 workstations (about 450 cores) for performing the CPU-intensive Monte Carlo simulations.
Information on the DrNuc app
Unfortunately, development stopped when the software did not meet customer needs. We are very grateful for the beta testers who took the time to test the app.
Brochure
Download PDFThis website uses cookies.
We use cookies to analyze website traffic and optimize your website experience. By accepting our use of cookies, your data will be aggregated with all other user data.