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Tony’s Achievements:

President and Owner of TDL International, Inc., a successful petrophysical consulting company, since its incorporation in the State of Texas in 1999.

Consulting petrophysicist involved in the deep water discovery of large hydrocarbon fields in Mauritania and Senegal, West Africa


One of the primary petrophysicists involved in the deep water discovery of Jubilee and other oil and gas fields in the West Cape Three Points and Deepwater Tano Blocks in Ghana, some of the largest in West Africa

Developed original methods for pseudo-sonic synthetic curve generation offered by two major petrophysical software companies currently in use by the oil and gas industry, worldwide

"Evaluation of Thin Bedded Turbidites in the Union Pacific / Ford 98 Area of Wilmington Field Utilizing High-Resolution Processed FMI Resistivity Data" (Joint Meeting Pacific Coast Convention of AAPG and Western Regional Meeting of SPE, Long Beach, 2000)

Exceptional Contribution Award from ARCO Chairman in 1998 for certification of the Indonesia Tangguh natural gas field estimated to contain over 500 billion m³ (17 Tcf) of proven natural gas reserves, with estimates of potential reserves reaching over 800 billion m³ (28 Tcf), the third largest hydrocarbon discovery in ARCO history (now BP):

Special Award for ARCO Indonesia Ubadari gas discovery in Irian Jaya presented, 1998.

ARCO Exceptional Contribution Awards for the Wiriagar/Berau and Vorwata gas discoveries in Irian Jaya, Indonesia. · Presented special WILDCAT AWARD from C.E.O. of ARCO for discovery of Indonesia Tangguh Field, 1997

Selected by Pertamina and ARCO Indonesia as a representative at the World Petroleum Congress in Beijing, China to present a new method for editing and generating Pseudo/Synthetic sonic curves, 1997

"Sonic/Density Well Log Data Editing with Pseudo Curve Generation -Indonesian Examples Using a Multiple Crossproduct Non-Linear Method "(World Petroleum Congress, Beijing, 1997)

"Low-Resistivity, Low-Contrast Pay: Some Examples from Offshore North West Java, Ardjuna Basin, Indonesia" (AAPG, Dallas, AAPG Bulletin, Volume 81 (1997)

Outstanding Technical Achievement Award from ARCO International Oil and Gas Company for developing computer model to locate by-passed pay using well logs, resulting in over 100 million dollars (USD) of additional reserves for ARCO and Pertamina, 1995

"Comparisons of Conventional Wireline Resistivity Logs Versus Logging While Drilling/Measurement While Drilling Logs in the Offshore Northwest Java Sea of Indonesia“ (Indonesia Petroleum Association, Jakarta, 1995)

"Talang Akar (Oligocene) Source Rock Identification From Wireline Logs -Applications in the Deep Ardjuna Basin, Offshore Northwest Java" (Indonesia Petroleum Association, Jakarta, 1995)

Outstanding Contribution Award from Atlantic Richfield Indonesia, Inc. for discovering large by-passed gas reserves in the Java Sea using only cased hole well logs, 1994

Outstanding Contribution Award from Atlantic Richfield Indonesia, Inc. for the development of computer programs to locate potential source rocks, 1994

Member Indonesian Petroleum Association

"U.S. Gulf Coast Field Experience with Thin-Bed Well Log Analysis" (GCAGS, Lafayette, 1990)

"Thin-bed Log Analysis Using High Resolution Measurements" (SAID/LASER/SPWLA, Paris, 1989)

"Applications of the High Resolution Deep Investigation Resistivity (TBRt) Instrument" (SAID/LASER/SPWLA, Paris, 1989)

"Dielectric Log Applications in Complex Lithologies and Variable Salinity Fluids" (International Meeting on Well Logging Techniques, Beijing, 1989)

"An Advanced Interpretation Technique Integrates Well Log and Core Data for Thin-Bed Reservoir Evaluation" (GCAGS, Corpus Christi, 1989)

"Simplified Dielectric Log Interpretation in Variable Salinities Using Resistivity vs. Phase Angle Crossplots" (SPWLA, London, 1987)

"PDK-100 Log Examples in the Gulf Coast" (SPWLA, Dallas, 1985)

"Log Evaluation of Clastic Shaly Formations Using Corrected Rwa-Ratio Techniques" (SPWLA, New Orleans, 1984)

"Continuous Carbon/Oxygen and Neutron Lifetime Log Proposed Interpretation for Organic and/or Shaly Depositional Environments" (SPWLA, New Orleans, 1984)


President, Society of Professional Well Log Analysts (SPWLA), Dallas Chapter, 1984

"Continuous Carbon/Oxygen Log Interpretation Techniques" (SPE, Las Vegas, 1979, JPT, 1981)

"Proposed Spectralog Product Index for Clay Volumes" ( Interoffice correspondence, Dresser Atlas, Houston, 1980. Documented in: Ruhovets, N., & Fertl, W. H. (1982, May 1). Digital Shaly Sand Analysis Based On Waxman-Smits Model And Log-Derived Clay Typing. Society of Petrophysicists and Well-Log Analysts).


"California Applications of the Continuous Carbon/Oxygen Log" (API, Bakersfield, 1977)


 "The Use of Photon Logs to Evaluate Gravel Packing" (SPE, Bakersfield, California, 1977)


Member Society of Petrophysicists and Well Log Analysts since 1975


Logging engineer for deepest straight well drilled in the world at the time (Bertha Rogers No. 1 in Oklahoma), 1974


Nominated for Schlumberger "Wildcatter Award", 1974


Member Society of Petroleum Engineers since 1973