Paul Lillis
Scientist Emeritus with the Central Energy Resources Science Center
Paul Lillis is a recently retired petroleum geochemist with the Central Energy Resources Science Center of the U.S. Geological Survey (USGS) in Denver, Colorado. He received a B.A. in geology from San Jose State University, an M.S. in geology from San Diego State University, and a Ph.D. in geochemistry from Colorado School of Mines. He was a petroleum exploration geologist with Atlantic Richfield for eight years (1978 to 1986) in Colorado, California, and Texas, and has been with the USGS in Denver since 1987. His research focuses on the application of petroleum and source-rock geochemistry to identifying, characterizing, and mapping petroleum systems.\
Science and Products
Filter Total Items: 70
Assessment of undiscovered oil and gas resources in the Ventura Basin Province, California, 2016 Assessment of undiscovered oil and gas resources in the Ventura Basin Province, California, 2016
The U.S. Geological Survey (USGS) completed a geology-based assessment of undiscovered, technically recoverable conventional and continuous oil and gas resources in the part of the Ventura Basin Province that lies onshore or within State waters (within 3 miles of the shoreline) of California (fig. 1). Conventional oil and gas resources are those that have migrated upward into structural...
Authors
Marilyn E. Tennyson, Christopher J. Schenk, Janet K. Pitman, Paul G. Lillis, Timothy R. Klett, Michael E. Brownfield, Thomas M. Finn, Stephanie B. Gaswirth, Sarah J. Hawkins, Kristen R. Marra, Tracey J. Mercier, Phuong A. Le, Heidi M. Leathers-Miller
Effects of thermal maturation and thermochemical sulfate reduction on compound-specific sulfur isotopic compositions of organosulfur compounds in Phosphoria oils from the Bighorn Basin, USA Effects of thermal maturation and thermochemical sulfate reduction on compound-specific sulfur isotopic compositions of organosulfur compounds in Phosphoria oils from the Bighorn Basin, USA
Compound-specific sulfur isotope analysis was applied to a suite of 18 crude oils generated from the Permian Phosphoria Formation in the Bighorn Basin, western USA. These oils were generated at various levels of thermal maturity and some experienced thermochemical sulfate reduction (TSR). This is the first study to examine the effects of thermal maturation on stable sulfur isotopic...
Authors
Geoffrey S. Ellis, Ward Said-Ahamed, Paul G. Lillis, Lubna Shawar, Alon Amrani
Evolution of the Lower Tertiary Elko Lake Basin, a potential hydrocarbon source rock in Northeast Nevada Evolution of the Lower Tertiary Elko Lake Basin, a potential hydrocarbon source rock in Northeast Nevada
No abstract available.
Authors
Ronald C. Johnson, Justin E. Birdwell
The Chuar Petroleum System, Arizona and Utah The Chuar Petroleum System, Arizona and Utah
The Neoproterozoic Chuar Group consists of marine mudstone, sandstone and dolomitic strata divided into the Galeros and Kwagunt Formations, and is exposed only in the eastern Grand Canyon, Arizona. Research by the U.S. Geological Survey (USGS) in the late 1980s identified strata within the group to be possible petroleum source rocks, and in particular the Walcott Member of the Kwagunt...
Authors
Paul G. Lillis
Geological, geochemical, and reservoir characterization of the Uteland Butte member of the Green River Formation, Uinta Basin, Utah Geological, geochemical, and reservoir characterization of the Uteland Butte member of the Green River Formation, Uinta Basin, Utah
No abstract available.
Authors
Justin E. Birdwell, Michael D. Vanden Berg, Ronald C. Johnson, Tracey J. Mercier, Adam Boehlke, Michael E. Brownfield
Assessment of undiscovered continuous oil resources in the Wolfcamp shale of the Midland Basin, Permian Basin Province, Texas, 2016 Assessment of undiscovered continuous oil resources in the Wolfcamp shale of the Midland Basin, Permian Basin Province, Texas, 2016
Using a geology-based assessment methodology, the U.S. Geological Survey assessed technically recoverable mean resources of 20 billion barrels of oil and 16 trillion cubic feet of gas in the Wolfcamp shale in the Midland Basin part of the Permian Basin Province, Texas.
Authors
Stephanie B. Gaswirth, Kristen R. Marra, Paul G. Lillis, Tracey J. Mercier, Heidi M. Leathers-Miller, Christopher J. Schenk, Timothy R. Klett, Phuong A. Le, Marilyn E. Tennyson, Sarah J. Hawkins, Michael E. Brownfield, Janet K. Pitman, Thomas M. Finn
Science and Products
Filter Total Items: 70
Assessment of undiscovered oil and gas resources in the Ventura Basin Province, California, 2016 Assessment of undiscovered oil and gas resources in the Ventura Basin Province, California, 2016
The U.S. Geological Survey (USGS) completed a geology-based assessment of undiscovered, technically recoverable conventional and continuous oil and gas resources in the part of the Ventura Basin Province that lies onshore or within State waters (within 3 miles of the shoreline) of California (fig. 1). Conventional oil and gas resources are those that have migrated upward into structural...
Authors
Marilyn E. Tennyson, Christopher J. Schenk, Janet K. Pitman, Paul G. Lillis, Timothy R. Klett, Michael E. Brownfield, Thomas M. Finn, Stephanie B. Gaswirth, Sarah J. Hawkins, Kristen R. Marra, Tracey J. Mercier, Phuong A. Le, Heidi M. Leathers-Miller
Effects of thermal maturation and thermochemical sulfate reduction on compound-specific sulfur isotopic compositions of organosulfur compounds in Phosphoria oils from the Bighorn Basin, USA Effects of thermal maturation and thermochemical sulfate reduction on compound-specific sulfur isotopic compositions of organosulfur compounds in Phosphoria oils from the Bighorn Basin, USA
Compound-specific sulfur isotope analysis was applied to a suite of 18 crude oils generated from the Permian Phosphoria Formation in the Bighorn Basin, western USA. These oils were generated at various levels of thermal maturity and some experienced thermochemical sulfate reduction (TSR). This is the first study to examine the effects of thermal maturation on stable sulfur isotopic...
Authors
Geoffrey S. Ellis, Ward Said-Ahamed, Paul G. Lillis, Lubna Shawar, Alon Amrani
Evolution of the Lower Tertiary Elko Lake Basin, a potential hydrocarbon source rock in Northeast Nevada Evolution of the Lower Tertiary Elko Lake Basin, a potential hydrocarbon source rock in Northeast Nevada
No abstract available.
Authors
Ronald C. Johnson, Justin E. Birdwell
The Chuar Petroleum System, Arizona and Utah The Chuar Petroleum System, Arizona and Utah
The Neoproterozoic Chuar Group consists of marine mudstone, sandstone and dolomitic strata divided into the Galeros and Kwagunt Formations, and is exposed only in the eastern Grand Canyon, Arizona. Research by the U.S. Geological Survey (USGS) in the late 1980s identified strata within the group to be possible petroleum source rocks, and in particular the Walcott Member of the Kwagunt...
Authors
Paul G. Lillis
Geological, geochemical, and reservoir characterization of the Uteland Butte member of the Green River Formation, Uinta Basin, Utah Geological, geochemical, and reservoir characterization of the Uteland Butte member of the Green River Formation, Uinta Basin, Utah
No abstract available.
Authors
Justin E. Birdwell, Michael D. Vanden Berg, Ronald C. Johnson, Tracey J. Mercier, Adam Boehlke, Michael E. Brownfield
Assessment of undiscovered continuous oil resources in the Wolfcamp shale of the Midland Basin, Permian Basin Province, Texas, 2016 Assessment of undiscovered continuous oil resources in the Wolfcamp shale of the Midland Basin, Permian Basin Province, Texas, 2016
Using a geology-based assessment methodology, the U.S. Geological Survey assessed technically recoverable mean resources of 20 billion barrels of oil and 16 trillion cubic feet of gas in the Wolfcamp shale in the Midland Basin part of the Permian Basin Province, Texas.
Authors
Stephanie B. Gaswirth, Kristen R. Marra, Paul G. Lillis, Tracey J. Mercier, Heidi M. Leathers-Miller, Christopher J. Schenk, Timothy R. Klett, Phuong A. Le, Marilyn E. Tennyson, Sarah J. Hawkins, Michael E. Brownfield, Janet K. Pitman, Thomas M. Finn