Expert Details

Expert in Navigation, Physics, Oilfield Projects, Computational Electromagnetics, Nuclear Radiation, Computers

Expert ID: 732043 California, USA

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Expert studied physics at MIT and has 8 years' expertise in navigation, guidance and control. He is experienced in JPL Radiation and worked on the Voyager spacecraft -- which, despite "doomsday" conditions, is still working 30 years later.

He has worked on hundreds of oil well surveying and navigation projects in U.S., South America, North SEA, and the Gulf of Mexico. He has extensive teaching experience at graduate and undergraduate levels for science and engineering.

Expert was one of 3 experts selected by NASA's Jet Propulsion Laboratory to analyze and radiation harden The Voyager Spacecrafts #1 and #2. The modules were exposed to a radiation environment many times a "doomsday level" here on earth and are still operational today 30 years later.

Expert subsequently served Ansoft corporation as Applications Engineer in Electromagnetic Radiation. He analyzed many systems, ranging from commonplace keyless entry system to the superconducting supercollider.

Expert managed the joint program between Wield-Heerbrug and Magnavox to develop the world's first portable millimeter surveying system using differential GPS, delivering the first system on time and on budget in 1986.

Today he consults the oilfield industry on a variety of directional drilling issues. He has developed his own passive magnetic ranging software to repair blowouts such as the deep-water Horizon tragedy.

Expert provided key direction in the development of new directional drilling oilfield tools at Baker Hughes.


Year Degree Subject Institution
Year: 1971 Degree: BS Subject: Physics Institution: MIT
Year: 1979 Degree: MS Subject: EE/Computer Science Institution: USC

Work History

Years Employer Title Department
Years: 2014 to Present Employer: Undisclosed Title: Consultant Department: Sensor Development
Expert guided the development of specialized directional drilling survey instruments witha staff of 30 engineers and programmers. This is expected to be the lead offering for BHI into a 900M new business area.
Years Employer Title Department
Years: 2010 to Present Employer: Undisclosed Title: Managing Director Department: Corp. HQ>
Expert developed his own proprietary passive magnetic ranging software for oilfield directional drilling which he has used in the field for a variety of intercept, repair, plug and abandon, and other applications. He has managed this eponymous consulting firm for several years.
Years Employer Title Department
Years: 1997 to 2010 Employer: Scientific Drilling International Title: Senior Staff Engineer Department: Engineering
Expert performed many Electromagnetics, Structural. and Thermal Computational analyses for a variety of instruments including propagation resistivity, pulsed neutron, acoustic fluid density measurement, shorthop transmission telemetry.
He discovered and corrected a set of errors in a widely accepted and reverified IEEE Standsrd on gyroscope calibration, bringing a large suite of the company's tools into industry acceptance which had heretofore failed standardstesting techniques.
Years Employer Title Department
Years: 1994 to 1997 Employer: Macneal-Schwendler/ Ansoft Corporation Title: Applications Engineer, Computational Electromagnetics Department: Engineering
He served as Applications Engineer for a variety of electromagnetic, Structural, Dynamic, and Eigenvalue problems on such instrumants as antennas, motors, centrifuges, etc.
Years Employer Title Department
Years: 1979 to 1994 Employer: Magnavox Governmental and Industrial Corp. Title: Staff Engineer Department: Engineering
He was Program Manager for GPS Survey Systems, Project Engineer for US Navy's "Precise Integrated Navigation System" for US Navy.. This system included SatNav, Loran Raydist, Acoustiv Nav, Dead Recckoning and others for the first operational Precise Minesweepers.

ExpertWallen also designed aspects of the first digital baseband GPS receiver for Command, Control, and Communication, Electronic Warfare deployed in the user equipment for all 4 branches of the military.
Years Employer Title Department
Years: 1973 to 1979 Employer: Jet Propulsion Laboratory Title: Radiation Specialist Department: Reliabilty and Quality Assurance
Expert was Radiation Hardening Specialist for Project Voyager, Later assigned to be project engineer for the NASA's Standard Articulation System achieveing pointing accuracy of 0.05 arc seconds per second. He was project engineer for NASA's Spin Bearing Assembly.
Years Employer Title Department
Years: 1972 to 1973 Employer: General Electric Co. Title: Component Engineer Department: Valley Forge Space Division
Expert made design decisions fro a variety of electronic components deloyed in earth orbiting, space probe and reentry systems.

Government Experience

Years Agency Role Description
Years: to Present Agency: NASA/JPL Role: Engineer Description: Radiation Hardening and Analysis

International Experience

Years Country / Region Summary
Years: 2006 to 2010 Country / Region: Aberdeen, Scotland Summary: Expert directed offshore drilling operations to successfully avoid collisions with other wells in the North Sea.
Years: 2008 to 2007 Country / Region: Santa Barbera, Venezuela Summary: ExpertWallen directed the drilling intercept of a major blowout, Schlumberger SBC-256 for PEDVESA, the state run Oil Agency. Work was done in conjunction with Boots and Coots Corporation, the Red Adair company that successfully extinquished the ensuing Fire.

Career Accomplishments

Associations / Societies
Awards / Recognition
NASA award for outstanding Achievemnet in Radiation Protection
NASA award for outstanding Achievemnet in Standard Articulation Control System
NASA award for outstanding Achievemnet Spin Bearing Assembly
Publications and Patents Summary
Expert has published 6 papers on computational electromagnetics and has 2 more in process.

Additional Experience

Expert Witness Experience
Expert has given several depositions for lawsuits between Magnavox and their subcontractors regarding contract requirements as well as for his own personal cases involving discrimination.
Vendor Selection
Expert has conducted a variety of activities throughout his career in vendor selection. For example, he worked on NASA's source evaluation board (SEB) for the Gallileo Standard articulation system and spin bearing assembly.
Marketing Experience
He has a unique perspective on oilfields directional drilling, having worked with all the main vendors in this area.
Other Relevant Experience
For ten years he has taught graduate and undergraduate courses in areas of Electronic Engineering and Computer Science and Programming. He also taught at the undergraduate level for 2 years in Physics and Astronomy.

Language Skills

Language Proficiency
Spanish Capable

Fields of Expertise

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