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Resume Summary:
 Total 22 years of oil and gas exploration experience in Asia-Pacific regions
 Six years of oil & gas exploration experience in East-African regions and middle-east Gulf basins
 Five years of seismic data processing experience; 11 years of seismic data interpretation experience
 Four years of supervisory role experience in the exploration & development projects
 Seismic data processing done for both onshore and offshore basins in the Indian sub-continent
 Successfully generated oil & gas prospects and evaluated them in different sedimentary basin settings
 Petrophysical analysis of well data, seismic petrophysics and reservoir description skills.
 Regional basin analysis by GM; structural and stratigraphic interpretation of 2D and 3D seismic data
 Depositional environments by seismic sequence analysis and well log, core and reservoir data.
 Geological and reservoir models prepared for drillable exploratory and development locations.
 Design and development of oil and Gas Company's data warehouse and data mining of warehouse.
 More than 30 research papers prepared relevant to oil & gas, geophysics and information technology
QUALIFICATIONS
* Master of Information Technology, Curtin University of Technology, Perth, WA, Australia (1999-04).
* Master of Science, Technology in Exploration Geophysics, Osmania Univ., Hyderabad, India (1974-77).
* Doctor of Philosophy in Science in Exploration Geophysics, IIT, Kharagpur, Calcutta, India (1977-82).
* Post Graduate Diploma in Exploration Database Management Systems, BVB, Bombay, (1991-92).
* Diploma in Systems Analysis and Data Processing, Annamalai University, Madras, India, (1989-90).
SPECIAL SKILLS
* 2D and 3D seismic data processing skills on PC and mainframes
* Interpretation of seismic data on Geo-frame (IESX) and Landmark (SeisWorks, ZMAP, Geo-probe)
* Seismic sequences and facies analysis; integration with geological data, prospect generation and evaluation
* Basin analysis and depositional environment mapping; prediction of reservoir, seal and source potential
* Design and development of data warehouse; data-mining of oil & gas companies' warehoused data
PROFESSIONAL
* Active Member, American Association of Petroleum Geologists (AAPG, USA)
* Active Member, Society of Exploration Geophysicists (SEG, USA)
* Active Member, Society of Petroleum Engineers (SPE, USA)
* Member, Indian Geophysical Union (IGU, India) and Association of Exploration Geoscientists (AEG, India)
* Member, Australian Society of Exploration Geophysicists (ASEG, Australia)
SHORT COURSES & MEETINGS
* GEOExplorer, OpenWorks, SeisWorks and Geoprobe, Landmark Geographic Co, Kuwait, 2006
* Kuwait International Petroleum Conference and Exhibition, Kuwait City, 2005
* Practical understanding of Pre- and Post-stack Migrations, Total Depth Pty. Ltd, Australia, 1998
* IBIMA International Conference, Cairo, Egypt 2005
* 3D seismic data processing, Geo-systems Co., Pasadena, California, USA, 1985
* National Certificate Examination in Supervision, NPCL, New Delhi, India, 1989
* STRATA and AVO Workshops, Hampson and Russell Earth Imaging Solutions, Australia, 1999
* The Seismic Velocity Model as an Interpretation Asset, Distinguished Short Course of SEG, Australia, 1999.
* Regional Geological Congress, Kampala, 01 and East-African Petroleum Conference, Nairobi, Kenya, 2003.
EMPLOYMENT
July 2005 – Till date: Senior Geophysicist, Wafra Joint Operations Company, Kuwait Santa Fe (seconded by Kuwait Gulf Oil Company and Chevron Energy), P O Box 9250, Ahmadi, 61003, Kuwait.
Presently working in a project on 2D and 3D Seismic data interpretation using Geo-Frame (IESX) and Landmark (SeisWorks, ZMAP and Geo-probe utilities) workstations for prospect generation and evaluation; integrated interpretation of Q Land 3D seismic data for exploration and development; QC of Q Land 3D seismic data acquisition and processing work done in Gulf basins. Mentoring of young geologists and geophysicists in petroleum companies. Integrated data interpretation using GEOGRAPHIX tools.
Mar-Jun'05: Petroleum Resources Geologist, Petroleum Resources Branch, Department of Industry & Resources, WA, Perth, Australia
Issue of exploration & production licenses for industry partners based on petroleum legislations, schedules and guidelines, recommending for drillable well approvals, promoting new exploration investment opportunities in the Western Australian basins. Intensive researching on the existing WA petroleum systems; integrated interpretation of exploration data and geological modeling studies.
Jan'04 – Feb'05: Resources Data Analyst, Curtin business School, Curtin University of Technology, P O Box U1987, Perth, WA 6845, Australia
Using the Western Australian Petroleum and Mineral Exploration Data, Multidimensional (ER) Models have been generated. Data loaded into Oracle program using SQL loaders. Relational databases designed and developed. User queries generated using SQL queries and manipulated data using DDL, DML and DCL features. Data mining and visualization approaches adopted for studying the correlations, trends and patterns of selected oil & gas data from warehoused resources data. Explored data have been presented for business intelligence.
Aug' 2001-'03: Technical Advisor, Petroleum Exploration and Production Department, Ministry of Energy and Mineral Development, PO Box 9, Entebbe, Uganda.
Worked as a technical advisor in the petroleum exploration and production department (a project funded by CFTC, London). Monitored exploration activities of this department with special reference to the geophysical exploration strategies applied to various oil and gas provinces and prospects in the western part of Uganda. Provided the technical advisory support to the department. Based on integrated interpretation of exploration data, submitted well locations proposal document for exploratory drilling in western Uganda. Promoted exploration investment opportunities in Uganda. Various emerging information technologies have been recommended for appropriate electronic business solutions for Oil & Gas Exploration Industries in East Africa.
Organized and conducted various training programs and workshops for young geologists and geophysicists on seismic exploration strategies. Prepared technical support training manuals for mentoring the young geologists and geophysicists of PEPD.
Jan'00-01: Sessional Faculty, Curtin Business School, Curtin University of Technology, Bentley Campus, Perth, WA, Australia: Taught under-graduate students on electronic commerce, business solutions with latest information technology tools. Prepared ERD and relational databases for Western Australian Petroleum Companies.
Dec'98-99: Seismic Interpreter, Total Depth (Exploration Services) Pty. Ltd., 21 Churchill Ave., Subiaco, 6008, WA, Australia: Done successfully integrated seismic and well-log data interpretation on Unix based workstations using STRATA and AVO software and also Unix based seismic data processing software.
July 1998 - Data Acquisition Geophysicist, TerraCorp, 23, Felspar St., Perth, WA, 6106, WA, Australia.: Associated with the seismic field crews in Leeman area, Perth Basin. Operated sign-bit recording system and acquired high-resolution 2D seismic data for exploring oil and natural gas deposits in Perth Basin. Got trained in the Geo-systems Corporation on 3D Seismic Acquisition and Processing technologies in the USA.
April 1998 - Geophysical Computing Analyst, Geo-Instruments Pty., Ltd, Rocky Point Rd., Rams Gate, Sydney, NSW 2219, Australia.
Signal processing of EM Prospecting data of mineral provinces of New South Wales. Discrete Fourier Transform algorithms prepared for calculating and analyzing amplitude and phase spectra for 1024 channel data of SIROTEM system. Analyzed amplitude and phase spectra manually for bipolar and square pulse excitations utilizing 1024 random noise data. Computer programs in Fortran attempted for calculating amplitude and phase spectra for 1024 channel transient EM data utilizing DFT and Radix-2 FFT algorithms. Linear filtering approach using the Goertzel algorithm, attempted for calculating spectra of kilo channel transient EM data. Attempted to solve an equation, establish and computerize a relation between apparent depth-apparent conductivity-normalized sensitivity parameters used in interpretation of time-domain EM data.
1983 – 1997: Senior Geophysicist–Superintendent Geophysicist, Exploration Business Group, Oil & Natural Gas Corporation Ltd (ONGC), Dehra Dun and Baroda, India.
FUNCTIONS
Led and worked with a team of geophysicists in the Regional Exploratory Data Interpretation Group (REDIG). I was responsible for exploring, proposing and evaluating drillable exploratory locations in North and South Cambay Basins, based on 2D and 3D seismic data interpretation on SIDIS, LANDMARK, GEOQUEST and CRYSTAL workstations. My responsibilities, as a team leader included extensive day-to-day planning, field surveys and field monitoring with updated seismic and well-log data, development of databases and consultancy services with projects, drill sites and field parties. We generated 3D Coordinate Information System for 3D seismic surveys in India. I was also responsible for presenting proposals for exploratory drilling locations in the Board Meetings.
Analyzed seismic sequences and para-sequences for interpreting depositional environments of sedimentary clastics of Cambay basin. Seismic facies, log-motiffs, core samples along with dip meter data used for preparing geological models. Structural and strati-structural analysis of 2D and 3D seismic data has been integrated with geological data. Developed field strategies and ensured optimum investment of available resources for commercial exploration and thereby minimizing drilling of dry locations. Applied 3D seismic modeling, depth imaging, cross hole tomography, amplitude versus offset, seismic inversion, seismic signature analysis tools during interpretation of seismic data for reservoir model development. Wave-let processing used for modeling purposes. Velocity models also prepared and interpreted the anomalous zones.
During 1983-86, carried out seismic processing work of onshore and offshore data. Processed gravity and magnetic data acquired from Bombay and Andaman offshore fields in the west coast of India. Extensive processing of 2D seismic data carried out in Krishna-Godavary and Cauvary onshore basins in the east coast of India on mainframe computer systems. Completed successfully projects of seismic data acquisition on DFS-5 and GEOCOR-4 with field processing work in the Cambay basin for six field seasons.
ACHIEVEMENTS
Total 10000 line kilometers of 2D seismic data and 300 square kilometers 3D seismic data have been processed and interpreted both manually and on workstations. Based on the structural and stratigraphic interpretation, we (I was part of team of geologists and geophysicists) proposed several drillable exploratory locations and presented them in board meetings. Over 60% of exploratory locations are found to be oil and gas bearing and rest were under testing. Worth mentioning important oil pool discoveries with commercial reserve accretion contributed based on seismic attributes and conceptual geological models include South of Gandhar, East of Gandhar and North and South of Mehsana. Interpretation of seismic facies and reflection character analysis combined with geological anomalies of the fields helped in exploring these oil and gas prospects. Based on manual and workstation seismic data interpretation integrated with geological data, over 20 delineation locations are found to be oil and gas bearing in the north Cambay basin. Based on 2D seismic data interpretation in Kutch basin, five important exploratory locations were proposed. These are the future thrust areas of exploration in the west coast of India. Interpreted 2D seismic stack sections from 3D Swath data set for detecting lenticular sand bodies hidden at a depth of 1.5 Km. Interpretation of field processed seismic sections done by me and along with other team members, helped to delineation of pinch-out prospects, lenticular sands within massive shales and cross faults responsible for movement, migration and accumulation of hydrocarbons at a depth of 1000 meters.
Under several multi-disciplinary projects " Insitu Combustion and Pay Zone Mapping", I interpreted 32 field stacks for mapping thick coal seams at a depth of 900 meters and "Mapping of thick coal seams by 3D seismic survey for Underground Coal Gasification", where injection and production well sites were recommended.
APRIL - AUGUST 1983: SCIENTIST, CENTER FOR EARTH SCIENCE STUDIES, INDIA
FUNCTIONS
As a scientist, under UNDP project, I, as part to team of geophysicists, carried out geophysical surveys like induced polarisation, electrical resistivity, gravity and magnetic surveys for estimating the depth to the basement, weathered zones and associated problems with placer deposits of gold in the Kerala State in India.
CONTRIBUTIONS
Analysis and interpretation of gravity and magnetic survey data, fairly provided the depth to basement and its structural relief. Qualitative data interpretation of I.P and electrical resistivity surveys identified areas of weathered zones of placer gold deposits.
JULY 1982 - MARCH 1983: GEOPHYSICIST, CMPDIL, COAL INDIA LIMITED, INDIA
FUNCTIONS
As a geophysicist, I assisted in processing of CDP reflection and refraction sounding data acquired from coal basins in northern India. During this period, I assisted the Department of Central Mine Planning and Design Institute Limited and carried out gravity, magnetic and electrical resistivity surveys for exploring coal seams and their thickness. Seismic refraction also conducted for estimating coal and sand columns in open cast mines. Mining geophysical methods have been recommended for delineating coal extensions and qualities.
CONTRIBUTIONS
Interpreted basement structural relief and its depth by analysis of gravity and magnetic survey data. Calculated sand columns and coal seam thickness by analysis of seismic refraction and electrical resistivity sounding data. Interpreted quality of coal seams by high resolution seismic data acquired by MDS-10 field system.
1980 – 1981: SENIOR RESEARCH ASSISTANT, IIT, Kharagpur, WB, India.
FUNCTIONS
As a senior research assistant, I worked in projects for development of groundwater resources in hard rock areas of West Bengal, India. I, along with other research students, conducted electrical and electromagnetic depth sounding surveys in hard rock areas to establish feasibility and applicability of these techniques in these terrains. Developed relevant computer software in FORTRAN for different layered earth media and computed their responses by simulating various layer conditions. We carried out integrated geophysical surveys in India for exploring Cu, Pb, Zn, coal and gold deposits.
CONTRIBUTIONS
Computed response curves of Dipole Frequency Sounding and Central Frequency Sounding systems used for interpreting field situations quantitatively in West Bengal and Orissa states in India. Interpreted integrated geophysical anomalies and their trends for drillable prospective locales for barites, disseminated sulphides and mica deposits in parts of Andhra Pradesh and Madhya Pradesh States of India. Used mathematical, statistical and numerical techniques for 2D ore modelling studies.
The following research papers have already been published in the international journals.
1. N.L.Shastri and H.P.Patra, Computation of type curves for central frequency sounding by means of digital linear filters, Bullittino Geofisica Teorica Ed Applica, Vol.25 (98), 1983, pp.119-130.
2. N.L.Shastri and H.P.Patra, Relative performances of CFS and DFS over a layered earth, PAGEOPH, Vol.120, 1982, pp.527-537.
3. N.L.Shastri and H.P.Patra, Theoretical CFS response curves over a generalized three-layer earth, PAGEOPH, Vol.121 (92), 1983.
4. H.P.Patra and N.L.Shastri, Electromagnetic sensing for groundwater at shallow depths in hard formations, published in the proceedings of international seminar on MIGS, held at Hague, The Netherlands.
5. H.P.Patra and N.L.Shastri, Electromagnetic depth sounding as an investigating method for groundwater, Published in the proceedings of the seminar on 'Hydrological investigations during the last 25 years in India, May 23-24, 1982.
6. H.P.Patra and N.L.Shastri, Response characteristics of Central Frequency Sounding, Bullittino Di Geofisica, Italy, 1984.
7. H.P.Patra and N.L.Shastri, Multi-frequency sounding results of laboratory simulated homogeneous and two-layer earth models, IEEE Transactions on Geoscience and Remote Sensing, Vol.26(6) pp.749-752,1988.
8. N.L.Shastri, Some studies on 3D field layouts for high resolution seismic data, 13th Annual convention and seminar in Exploration Geophysics of AEG, 1987.
9. N.L.Shastri, On high resolution 3D seismic survey for mapping coal for Underground Coal Gasification, 72nd Engineering Br., ISC, January, 1988.
10. N. L. Shastri, New method of analyzing seismic refractions for residual statics by 1024 channel seismic data acquisition system, NGRI Conference, 1988.
11. N. L. Shastri, Field data processing, an essential quality control approach for expensive 3D seismic data acquisition, NGRI, India, 1988.
12. N. L. Shastri, Geo-exploration strategies for converting underground coal into oil, gas and electricity, NGRI Conference, Hyderabad, India, 1989.
13. H.P. Patra, and N. L. Shastri, Long Offset Transient Electromagnetic Depth Sounding in the Saurastra peninsular, Western India, Indo-US Workshop on Deep Electromagnetic Methods, IIT, Kharagpur, 1991.
14. H. P. Patra, and N.L. Shastri, Transient CFS response over a two-layer earth, 16th General Assembly of European Geophysical Society, Wiesbaden, FRG, 1991.
15. Chakraborty, K. Mubarak, Al. H, Nimmagadda, S.L. and Ray, J. (2006) Exploration Data Integration, an effective reengineering process for new petroleum plays in Gulf Offshore Basins, presented and published in an International Conference of AAPG, held in Perth, Australia.
16. Nimmagadda, S.L. Kashambuzi, R. Rubondo, E. and Kasande, R. (2006) Application of Integrated Geophysical Strategies in the Albertine Graben and its Petroleum Potentiality, a poster presented and published in an International Conference of AAPG, held in Perth, Australia.
17. Chakraborty, K. Al-Hajeri, M and Nimmagadda, S.L, (2007) 3D Seismic Data Attributes Analysis for Predicting Wara reservoir qualities in the Al-Khafji Field, Middle East, a paper presented and published in the proceedings of 3rd North African/Mediterranean Petroleum & Geo-science Conference & Exhibition, Tripoli, Libya, February.
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