Ofori Pearson
Science Center Director of the Central Energy Resources Science Center
Science and Products
Filter Total Items: 26
Geologic models underpinning the 2018 US Geological Survey assessment of hydrocarbon resources in the Eagle Ford Group and associated Cenomanian–Turonian strata, United States Gulf Coast, Texas Geologic models underpinning the 2018 US Geological Survey assessment of hydrocarbon resources in the Eagle Ford Group and associated Cenomanian–Turonian strata, United States Gulf Coast, Texas
The availability of new geologic and production data has greatly increased since 2010, when the US Geological Survey (USGS) last assessed undiscovered, technically recoverable oil and gas resources in the Cenomanian–Turonian (CT) Eagle Ford Group (EFG) across Texas. This new information facilitated an updated assessment of undiscovered continuous oil and gas resources in the Eagle Ford...
Authors
Katherine Whidden, Janet K. Pitman, Heidi M. Leathers-Miller, Ofori Pearson, Nicholas Gianoutsos, Scott Kinney, Justin Birdwell, Stanley Paxton, Lauri Burke, Russell F. Dubiel
Assessment of undiscovered oil and gas resources in the Upper Cretaceous Austin Chalk and Tokio and Eutaw Formations, U.S. Gulf Coast, 2019 Assessment of undiscovered oil and gas resources in the Upper Cretaceous Austin Chalk and Tokio and Eutaw Formations, U.S. Gulf Coast, 2019
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 6.9 billion barrels of oil and 41.5 trillion cubic feet of natural gas in conventional and continuous accumulations in the Upper Cretaceous Austin Chalk and Tokio and Eutaw Formations onshore and in State waters of the U.S. Gulf Coast region.
Authors
Janet Pitman, Stanley Paxton, Scott Kinney, Katherine Whidden, Seth Haines, Brian Varela, Tracey Mercier, Cheryl Woodall, Christopher Schenk, Heidi Leathers-Miller, Ofori Pearson, Lauri Burke, Phuong Le, Justin Birdwell, Nicholas Gianoutsos, Katherine French, Ronald Drake, Thomas Finn, Geoffrey Ellis, Stephanie Gaswirth, Kristen Marra, Marilyn Tennyson, Chilisa Shorten
New method for correcting bottomhole temperatures acquired from wireline logging measurements and calibrated for the onshore Gulf of Mexico Basin, U.S.A. New method for correcting bottomhole temperatures acquired from wireline logging measurements and calibrated for the onshore Gulf of Mexico Basin, U.S.A.
Bottomhole temperature (BHT) measurements offer a useful way to characterize the subsurface thermal regime as long as they are corrected to represent in situ reservoir temperatures. BHT correction methods calibrated for the domestic onshore Gulf of Mexico basin were established in this study. These corrections are empirically derived and based on newly compiled databases of BHT wireline
Authors
Lauri Burke, Ofori Pearson, Scott Kinney
Methodology for correcting bottomhole temperatures acquired from wireline logging measurements in the onshore U.S. Gulf of Mexico Basin to characterize the thermal regime of total petroleum systems Methodology for correcting bottomhole temperatures acquired from wireline logging measurements in the onshore U.S. Gulf of Mexico Basin to characterize the thermal regime of total petroleum systems
Characterization of the subsurface thermal regime is critical for understanding many facets of the petroleum system, from thermal maturation of organic-rich source rocks to thermal preservation and non-degradation of hydrocarbon accumulations. On a broad scale, paleo-heatflow has been mapped for the North American continent (Blackwell and Richards, 2004) as well as the contiguous United...
Authors
Lauri Burke, Ofori Pearson, Scott Kinney, Janet Pitman
U.S. Geological Survey input-data forms for the assessment of the Upper Jurassic Bossier Formation, U.S. Gulf Coast, 2016 U.S. Geological Survey input-data forms for the assessment of the Upper Jurassic Bossier Formation, U.S. Gulf Coast, 2016
Introduction In 2016, the U.S. Geological Survey (USGS) completed an updated assessment of undiscovered, technically recoverable oil and gas resources in the Upper Jurassic Bossier Formation of the onshore U.S. Gulf Coast Province (Paxton and others, 2017). The Bossier Formation was assessed using both the standard continuous (unconventional) and conventional methodologies established by...
Authors
Stanley Paxton, Janet Pitman, Scott Kinney, Nicholas Gianoutsos, Ofori Pearson, Katherine Whidden, Russell Dubiel, Christopher Schenk, Lauri Burke, Timothy R. Klett, Heidi Leathers-Miller, Tracey Mercier, Seth Haines, Brian Varela, Phuong Le, Thomas Finn, Stephanie Gaswirth, Sarah Hawkins, Kristen Marra, Marilyn E. Tennyson
U.S. Geological Survey input-data forms for the assessment of the Upper Jurassic Haynesville Formation, U.S. Gulf Coast, 2016 U.S. Geological Survey input-data forms for the assessment of the Upper Jurassic Haynesville Formation, U.S. Gulf Coast, 2016
Introduction In 2016, the U.S. Geological Survey (USGS) completed an updated assessment of undiscovered, technically recoverable oil and gas resources in the Upper Jurassic Haynesville Formation of the onshore U.S. Gulf Coast Province (Paxton and others, 2017). The Haynesville Formation was assessed using both the standard continuous (unconventional) and conventional methodologies...
Authors
Stanley Paxton, Janet Pitman, Scott Kinney, Nicholas Gianoutsos, Ofori Pearson, Katherine Whidden, Russell Dubiel, Christopher Schenk, Lauri Burke, Timothy R. Klett, Heidi Leathers-Miller, Tracey Mercier, Seth Haines, Brian Varela, Phuong Le, Thomas Finn, Stephanie Gaswirth, Sarah Hawkins, Kristen Marra, Marilyn E. Tennyson
Assessment of undiscovered oil and gas resources in the Eagle Ford Group and associated Cenomanian–Turonian Strata, U.S. Gulf Coast, Texas, 2018 Assessment of undiscovered oil and gas resources in the Eagle Ford Group and associated Cenomanian–Turonian Strata, U.S. Gulf Coast, Texas, 2018
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 8.5 billion barrels of oil and 66 trillion cubic feet of gas in continuous accumulations in the Upper Cretaceous Eagle Ford Group and associated Cenomanian–Turonian strata in onshore lands of the U.S. Gulf Coast region, Texas.
Authors
Katherine Whidden, Janet Pitman, Ofori Pearson, Stanley Paxton, Scott Kinney, Nicholas Gianoutsos, Christopher Schenk, Heidi Leathers-Miller, Justin Birdwell, Michael Brownfield, Lauri Burke, Russell Dubiel, Katherine French, Stephanie B. Gaswirth, Seth Haines, Phuong A. Le, Kristen Marra, Tracey Mercier, Marilyn E. Tennyson, Cheryl Woodall
Assessment of undiscovered conventional oil and gas resources in the downdip Paleogene formations, U.S. Gulf Coast, 2017 Assessment of undiscovered conventional oil and gas resources in the downdip Paleogene formations, U.S. Gulf Coast, 2017
Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean undiscovered, technically recoverable conventional resources of 100 million barrels of oil and 16.5 trillion cubic feet of gas in the downdip Paleogene formations in onshore lands and State waters of the U.S. Gulf Coast region.
Authors
Marc Buursink, Colin Doolan, Catherine Enomoto, William Craddock, James Coleman, Michael Brownfield, Stephanie B. Gaswirth, Timothy Klett, Phuong A. Le, Heidi Leathers-Miller, Kristen Marra, Tracey Mercier, Ofori Pearson, Janet Pitman, Christopher Schenk, Marilyn E. Tennyson, Katherine Whidden, Cheryl A. Woodall
Assessment of undiscovered oil and gas resources of the Susitna Basin, southern Alaska, 2017 Assessment of undiscovered oil and gas resources of the Susitna Basin, southern Alaska, 2017
The U.S. Geological Survey (USGS) recently completed an assessment of undiscovered, technically recoverable oil and gas resources in the Susitna Basin of southern Alaska. Using a geology-based methodology, the USGS estimates that mean undiscovered volumes of about 2 million barrels of oil and nearly 1.7 trillion cubic feet of gas may be found in this area.
Authors
Richard Stanley, Christopher Potter, Kristen Lewis, Paul Lillis, Anjana Shah, Peter Haeussler, Jeffrey Phillips, Zenon Valin, Christopher Schenk, Timothy R. Klett, Michael Brownfield, Ronald Drake, Thomas Finn, Seth Haines, Debra Higley, David Houseknecht, Phuong A. Le, Kristen Marra, Tracey Mercier, Heidi Leathers-Miller, Stanley Paxton, Ofori Pearson, Marilyn E. Tennyson, Cheryl Woodall, Margarita Zyrianova
Geochemical and mineralogical characterization of the Eagle Ford Shale: Results from the USGS Gulf Coast #1 West Woodway core Geochemical and mineralogical characterization of the Eagle Ford Shale: Results from the USGS Gulf Coast #1 West Woodway core
The Eagle Ford shale is a major continuous oil and gas resource play in southcentral Texas and a source for other oil accumulations in the East Texas Basin. As part of the U.S. Geological Survey’s (USGS) petroleum system assessment and research efforts, a coring program to obtain several immature, shallow cores from near the outcrop belt in central Texas has been undertaken. The first of...
Authors
Justin Birdwell, Adam Boehlke, Stanley Paxton, Katherine Whidden, Ofori Pearson
Assessment of undiscovered oil and gas resources in the Haynesville Formation, U.S. Gulf Coast, 2016 Assessment of undiscovered oil and gas resources in the Haynesville Formation, U.S. Gulf Coast, 2016
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 1.1 billion barrels of conventional oil and 195.8 trillion cubic feet of gas in the Upper Jurassic Haynesville Formation in onshore lands and State waters of the U.S. Gulf Coast region.
Authors
Stanley Paxton, Janet Pitman, Scott Kinney, Nicholas Gianoutsos, Ofori Pearson, Katherine Whidden, Russell Dubiel, Christopher Schenk, Lauri Burke, Timothy R. Klett, Heidi Leathers-Miller, Tracey Mercier, Seth Haines, Brian Varela, Phuong Le, Thomas Finn, Stephanie B. Gaswirth, Sarah Hawkins, Kristen Marra, Marilyn E. Tennyson
Assessment of undiscovered oil and gas resources in the Bossier Formation, U.S. Gulf Coast, 2016 Assessment of undiscovered oil and gas resources in the Bossier Formation, U.S. Gulf Coast, 2016
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 2.9 billion barrels of conventional oil and 108.6 trillion cubic feet of natural gas in the Upper Jurassic Bossier Formation in onshore lands and State waters of the U.S. Gulf Coast region.
Authors
Stanley Paxton, Janet Pitman, Scott Kinney, Nicholas Gianoutsos, Ofori Pearson, Katherine Whidden, Russell Dubiel, Christopher Schenk, Lauri Burke, Timothy Klett, Heidi Leathers-Miller, Tracey Mercier, Seth Haines, Brian Varela, Phuong A. Le, Thomas Finn, Stephanie Gaswirth, Sarah Hawkins, Kristen Marra, Marilyn E. Tennyson
Comparing Uncorrected and Corrected Bottom-hole Temperatures Using Published Correction Methods For the Onshore U.S. Gulf of Mexico Comparing Uncorrected and Corrected Bottom-hole Temperatures Using Published Correction Methods For the Onshore U.S. Gulf of Mexico
Wireline logging temperature readings are known to be imprecise and need to be corrected to more accurately show what the formation temperature is. One issue with correcting logging temperatures is what correction factor to use. Because there are so many correction factors and they are based on different types of data and locations choosing a correction factor for a particular study area...
Science and Products
Filter Total Items: 26
Geologic models underpinning the 2018 US Geological Survey assessment of hydrocarbon resources in the Eagle Ford Group and associated Cenomanian–Turonian strata, United States Gulf Coast, Texas Geologic models underpinning the 2018 US Geological Survey assessment of hydrocarbon resources in the Eagle Ford Group and associated Cenomanian–Turonian strata, United States Gulf Coast, Texas
The availability of new geologic and production data has greatly increased since 2010, when the US Geological Survey (USGS) last assessed undiscovered, technically recoverable oil and gas resources in the Cenomanian–Turonian (CT) Eagle Ford Group (EFG) across Texas. This new information facilitated an updated assessment of undiscovered continuous oil and gas resources in the Eagle Ford...
Authors
Katherine Whidden, Janet K. Pitman, Heidi M. Leathers-Miller, Ofori Pearson, Nicholas Gianoutsos, Scott Kinney, Justin Birdwell, Stanley Paxton, Lauri Burke, Russell F. Dubiel
Assessment of undiscovered oil and gas resources in the Upper Cretaceous Austin Chalk and Tokio and Eutaw Formations, U.S. Gulf Coast, 2019 Assessment of undiscovered oil and gas resources in the Upper Cretaceous Austin Chalk and Tokio and Eutaw Formations, U.S. Gulf Coast, 2019
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 6.9 billion barrels of oil and 41.5 trillion cubic feet of natural gas in conventional and continuous accumulations in the Upper Cretaceous Austin Chalk and Tokio and Eutaw Formations onshore and in State waters of the U.S. Gulf Coast region.
Authors
Janet Pitman, Stanley Paxton, Scott Kinney, Katherine Whidden, Seth Haines, Brian Varela, Tracey Mercier, Cheryl Woodall, Christopher Schenk, Heidi Leathers-Miller, Ofori Pearson, Lauri Burke, Phuong Le, Justin Birdwell, Nicholas Gianoutsos, Katherine French, Ronald Drake, Thomas Finn, Geoffrey Ellis, Stephanie Gaswirth, Kristen Marra, Marilyn Tennyson, Chilisa Shorten
New method for correcting bottomhole temperatures acquired from wireline logging measurements and calibrated for the onshore Gulf of Mexico Basin, U.S.A. New method for correcting bottomhole temperatures acquired from wireline logging measurements and calibrated for the onshore Gulf of Mexico Basin, U.S.A.
Bottomhole temperature (BHT) measurements offer a useful way to characterize the subsurface thermal regime as long as they are corrected to represent in situ reservoir temperatures. BHT correction methods calibrated for the domestic onshore Gulf of Mexico basin were established in this study. These corrections are empirically derived and based on newly compiled databases of BHT wireline
Authors
Lauri Burke, Ofori Pearson, Scott Kinney
Methodology for correcting bottomhole temperatures acquired from wireline logging measurements in the onshore U.S. Gulf of Mexico Basin to characterize the thermal regime of total petroleum systems Methodology for correcting bottomhole temperatures acquired from wireline logging measurements in the onshore U.S. Gulf of Mexico Basin to characterize the thermal regime of total petroleum systems
Characterization of the subsurface thermal regime is critical for understanding many facets of the petroleum system, from thermal maturation of organic-rich source rocks to thermal preservation and non-degradation of hydrocarbon accumulations. On a broad scale, paleo-heatflow has been mapped for the North American continent (Blackwell and Richards, 2004) as well as the contiguous United...
Authors
Lauri Burke, Ofori Pearson, Scott Kinney, Janet Pitman
U.S. Geological Survey input-data forms for the assessment of the Upper Jurassic Bossier Formation, U.S. Gulf Coast, 2016 U.S. Geological Survey input-data forms for the assessment of the Upper Jurassic Bossier Formation, U.S. Gulf Coast, 2016
Introduction In 2016, the U.S. Geological Survey (USGS) completed an updated assessment of undiscovered, technically recoverable oil and gas resources in the Upper Jurassic Bossier Formation of the onshore U.S. Gulf Coast Province (Paxton and others, 2017). The Bossier Formation was assessed using both the standard continuous (unconventional) and conventional methodologies established by...
Authors
Stanley Paxton, Janet Pitman, Scott Kinney, Nicholas Gianoutsos, Ofori Pearson, Katherine Whidden, Russell Dubiel, Christopher Schenk, Lauri Burke, Timothy R. Klett, Heidi Leathers-Miller, Tracey Mercier, Seth Haines, Brian Varela, Phuong Le, Thomas Finn, Stephanie Gaswirth, Sarah Hawkins, Kristen Marra, Marilyn E. Tennyson
U.S. Geological Survey input-data forms for the assessment of the Upper Jurassic Haynesville Formation, U.S. Gulf Coast, 2016 U.S. Geological Survey input-data forms for the assessment of the Upper Jurassic Haynesville Formation, U.S. Gulf Coast, 2016
Introduction In 2016, the U.S. Geological Survey (USGS) completed an updated assessment of undiscovered, technically recoverable oil and gas resources in the Upper Jurassic Haynesville Formation of the onshore U.S. Gulf Coast Province (Paxton and others, 2017). The Haynesville Formation was assessed using both the standard continuous (unconventional) and conventional methodologies...
Authors
Stanley Paxton, Janet Pitman, Scott Kinney, Nicholas Gianoutsos, Ofori Pearson, Katherine Whidden, Russell Dubiel, Christopher Schenk, Lauri Burke, Timothy R. Klett, Heidi Leathers-Miller, Tracey Mercier, Seth Haines, Brian Varela, Phuong Le, Thomas Finn, Stephanie Gaswirth, Sarah Hawkins, Kristen Marra, Marilyn E. Tennyson
Assessment of undiscovered oil and gas resources in the Eagle Ford Group and associated Cenomanian–Turonian Strata, U.S. Gulf Coast, Texas, 2018 Assessment of undiscovered oil and gas resources in the Eagle Ford Group and associated Cenomanian–Turonian Strata, U.S. Gulf Coast, Texas, 2018
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 8.5 billion barrels of oil and 66 trillion cubic feet of gas in continuous accumulations in the Upper Cretaceous Eagle Ford Group and associated Cenomanian–Turonian strata in onshore lands of the U.S. Gulf Coast region, Texas.
Authors
Katherine Whidden, Janet Pitman, Ofori Pearson, Stanley Paxton, Scott Kinney, Nicholas Gianoutsos, Christopher Schenk, Heidi Leathers-Miller, Justin Birdwell, Michael Brownfield, Lauri Burke, Russell Dubiel, Katherine French, Stephanie B. Gaswirth, Seth Haines, Phuong A. Le, Kristen Marra, Tracey Mercier, Marilyn E. Tennyson, Cheryl Woodall
Assessment of undiscovered conventional oil and gas resources in the downdip Paleogene formations, U.S. Gulf Coast, 2017 Assessment of undiscovered conventional oil and gas resources in the downdip Paleogene formations, U.S. Gulf Coast, 2017
Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean undiscovered, technically recoverable conventional resources of 100 million barrels of oil and 16.5 trillion cubic feet of gas in the downdip Paleogene formations in onshore lands and State waters of the U.S. Gulf Coast region.
Authors
Marc Buursink, Colin Doolan, Catherine Enomoto, William Craddock, James Coleman, Michael Brownfield, Stephanie B. Gaswirth, Timothy Klett, Phuong A. Le, Heidi Leathers-Miller, Kristen Marra, Tracey Mercier, Ofori Pearson, Janet Pitman, Christopher Schenk, Marilyn E. Tennyson, Katherine Whidden, Cheryl A. Woodall
Assessment of undiscovered oil and gas resources of the Susitna Basin, southern Alaska, 2017 Assessment of undiscovered oil and gas resources of the Susitna Basin, southern Alaska, 2017
The U.S. Geological Survey (USGS) recently completed an assessment of undiscovered, technically recoverable oil and gas resources in the Susitna Basin of southern Alaska. Using a geology-based methodology, the USGS estimates that mean undiscovered volumes of about 2 million barrels of oil and nearly 1.7 trillion cubic feet of gas may be found in this area.
Authors
Richard Stanley, Christopher Potter, Kristen Lewis, Paul Lillis, Anjana Shah, Peter Haeussler, Jeffrey Phillips, Zenon Valin, Christopher Schenk, Timothy R. Klett, Michael Brownfield, Ronald Drake, Thomas Finn, Seth Haines, Debra Higley, David Houseknecht, Phuong A. Le, Kristen Marra, Tracey Mercier, Heidi Leathers-Miller, Stanley Paxton, Ofori Pearson, Marilyn E. Tennyson, Cheryl Woodall, Margarita Zyrianova
Geochemical and mineralogical characterization of the Eagle Ford Shale: Results from the USGS Gulf Coast #1 West Woodway core Geochemical and mineralogical characterization of the Eagle Ford Shale: Results from the USGS Gulf Coast #1 West Woodway core
The Eagle Ford shale is a major continuous oil and gas resource play in southcentral Texas and a source for other oil accumulations in the East Texas Basin. As part of the U.S. Geological Survey’s (USGS) petroleum system assessment and research efforts, a coring program to obtain several immature, shallow cores from near the outcrop belt in central Texas has been undertaken. The first of...
Authors
Justin Birdwell, Adam Boehlke, Stanley Paxton, Katherine Whidden, Ofori Pearson
Assessment of undiscovered oil and gas resources in the Haynesville Formation, U.S. Gulf Coast, 2016 Assessment of undiscovered oil and gas resources in the Haynesville Formation, U.S. Gulf Coast, 2016
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 1.1 billion barrels of conventional oil and 195.8 trillion cubic feet of gas in the Upper Jurassic Haynesville Formation in onshore lands and State waters of the U.S. Gulf Coast region.
Authors
Stanley Paxton, Janet Pitman, Scott Kinney, Nicholas Gianoutsos, Ofori Pearson, Katherine Whidden, Russell Dubiel, Christopher Schenk, Lauri Burke, Timothy R. Klett, Heidi Leathers-Miller, Tracey Mercier, Seth Haines, Brian Varela, Phuong Le, Thomas Finn, Stephanie B. Gaswirth, Sarah Hawkins, Kristen Marra, Marilyn E. Tennyson
Assessment of undiscovered oil and gas resources in the Bossier Formation, U.S. Gulf Coast, 2016 Assessment of undiscovered oil and gas resources in the Bossier Formation, U.S. Gulf Coast, 2016
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 2.9 billion barrels of conventional oil and 108.6 trillion cubic feet of natural gas in the Upper Jurassic Bossier Formation in onshore lands and State waters of the U.S. Gulf Coast region.
Authors
Stanley Paxton, Janet Pitman, Scott Kinney, Nicholas Gianoutsos, Ofori Pearson, Katherine Whidden, Russell Dubiel, Christopher Schenk, Lauri Burke, Timothy Klett, Heidi Leathers-Miller, Tracey Mercier, Seth Haines, Brian Varela, Phuong A. Le, Thomas Finn, Stephanie Gaswirth, Sarah Hawkins, Kristen Marra, Marilyn E. Tennyson
Comparing Uncorrected and Corrected Bottom-hole Temperatures Using Published Correction Methods For the Onshore U.S. Gulf of Mexico Comparing Uncorrected and Corrected Bottom-hole Temperatures Using Published Correction Methods For the Onshore U.S. Gulf of Mexico
Wireline logging temperature readings are known to be imprecise and need to be corrected to more accurately show what the formation temperature is. One issue with correcting logging temperatures is what correction factor to use. Because there are so many correction factors and they are based on different types of data and locations choosing a correction factor for a particular study area...