Updated: August **, ****

Name: Sittampalam Thirugnanasampanthan (AKA Sam)

Address:

***** ******** **** **.

Cypress, Texas 77429

United States

Phone: 346-***-****

Residency: US - Green Card since 1989

Citizenship: United Kingdom

Education

1. B Sc Engineering, University of Ceylon

2. M Sc. Mathematics, Cranfield Institute of Technology (now Cranfield University), Bedford, England, United Kingdom

Master’s Thesis: Iterative spectral refinement and extrapolation of band limited and time limited signals.

Membership of Professional Societies

American Geophysical Union (AGU),

American Mathematical Society

American Association for the Advancement of Science WORK EXPERIENCE - 1991 – 2022

Most recent work:

1. Mathematics Tutor

Employer: Vallejo City Unified School District

Vallejo, California, USA

Period: Academic Year 2021 – 2022

(Travels in Bali, Sri Lanka and Australia

Pandemic and odd jobs: January 2019 – September 2021) Employer: Just Geo Services September 1991 –

December 2018

Position: Company Owner / Consultant

Employment Period: June 1991 – December 2018

Providing Seismic data processing / subsurface imaging services to oil and gas companies worldwide.

2. Working at Geokinetics as a consultant

Employment Period: February 2013 - June 2018

Seismic Acquisition and Processing Technology Research group Ocean Bottom Cable System (OBC),

Ocean Bottom Node System (OBN) offshore seismic acquisition systems, Broad Band seismic – from very low to very high bandwidth, Marine vibrator and other future technologies as well as the state-of-the-art processing research. 3. March 2009 to January 2013

Land 3D Seismic Processing Consultant. Qatar Petroleum Working on the onshore seismic acquisition and processing of a 3D seismic survey, a four year program including field work and final results that includes subsurface 3D images, subsurface faulting, evidence of oil and gas accumulations and many useful rock properties for further research and development of the oil and gas for commercial purpose. !

4. February 2008 to January 2009:

Seismic data processing/Project management and Processing QC of offshore seismic data in China covering many blocks in the South China Sea for Devon Energy 5. Just Geo Inc.: June 1991 – December 2007, Houston, Texas. Time processing of Large Marine 3D: 200 to 1000 Sq. Miles, Time processing of small Land 3D: 15 - 100 Sq. Miles. Land and Marine 2D processing: from one line to more than 2000 KM multiple lines grids.

Software ProMAX 2D / 3D – Licensed by Halliburton

DISCO/ FOCUS 2D /3D – Licensed by Paradigm Geophysical Other PSTM software by GeoTomo Geophysical Co.

Good experience with UNIX / LINUX and MS OFFICE.

6. Entropic Geophysical: April 1986 - August 1991

Cupertino, California and Houston, Texas

Position: Chief Geophysicist / VP

Time processing and imaging of land and marine 2D seismic data. 7. TLC Seismic: Jan 1985 - March 1986 Dallas, Texas Position: Chief Geophysicist

Mostly 2D Land Data processing

8. DIGICON Geophysical: September 1982 – December 1984 East Grinstead, England

Position: Area Geophysicist – for Europe, Africa and Middle East Region 2D Land, 2D/3D Marine Seismic acquisition and Processing, Research and Software Development

9. Geophysical Services Int. – A Division of Texas Instruments January 1974 - August 1982 Bedford, England

a. Positions: Seismologist, Group Leader, Party Chief (project manager), Bedford, England, United Kingdom.

b. Research Geophysicist, Dallas, Texas, USA (August 1978 to September 1980)

c. Project Manager: Bedford, England, United Kingdom ( October 1980 – August 1982)

Projects: Large marine 2D and medium sized 3D (large for those days) While in Dallas, Texas, I Worked on research mostly on Saudi ARAMCO data - for example; Marjan Oil Field, 3D – offshore Arabian Gulf - Near surface related problems of noise and travel time distortions, Signal recovery by inverse filters etc.

Other traditional 2D/3D residual statics(travel time correction for distortion due to near surface velocity anomalies in near surface soil and rocks) and de- convolution/wavelet processing problems

Wrote my own Software for wavelet estimation, spectral ratios for time varying Inverse Q filters. I also developed a simple method for iterative subsurface imaging by 3D seismic velocity field updates.

But I am not current on programming, except for MATLAB and Python 10. January 1971 – May 1973:

Employer: Mott Hay and Anderson – International Consulting Engineers Worked on remodeling and new Subway Designs in London. 11. Part Time Mathematics Tutor - June 1965 – September 1967 University of Ceylon

Kandy, Sri Lanka

12. Mechanical Engineer – September 1968 – December 1970 Ceylon Transport Board

Colombo, Sri Lanka

13. Part Time Tutoring to Aspiring Engineering students Part Time Tutoring Junior Staff for London City and Guilds engineering examinations

June 1968 – December 1970