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Friday, December 12, 2014

Scientific Results of the India National Gas Hydrate Program Expedition 01

Outside Publication: Journal of Marine and Petroleum Geology
Geologic implications of gas hydrates in the offshore of India: Results of the National Gas Hydrate Program Expedition 01 have been published as a special issue of the Journal of Marine and Petroleum Geology (Volume 58, Part B).


Wednesday, October 01, 2014

Evidence for a palaeo-oil column and alteration of residual oil in a gas-condensate field: Integrated oil inclusion and experimental results

Outside Publication: Geochimica et Cosmochimica Acta
In the Phuong Dong gas condensate field, Cuu Long Basin, Vietnam, hydrocarbon inclusions in quartz trapped a variety of petroleum fluids in the gas zone. Based on the attributes of the oil inclusion assemblages (fluorescence colour of the oil, bubble size, presence of bitumen), the presence of a palaeo-oil column is inferred prior to migration of gas into the reservoir. When a palaeo-oil column is displaced by gas, a residual volume fraction of oil remains in pores....


Wednesday, September 24, 2014

Assessment Potential Shale-Oil and Shale-Gas Resources in Silurian Shales of Jordan, 2014

National and Global Petroleum Assessment Project

USGS Publication: Fact Sheet 2014–3082
Using a geology-based assessment methodology, the U.S. Geological Survey estimated means of 11 million barrels of potential shale-oil and 320 billion cubic feet of shale-gas resources in Silurian shales of Jordan.


Friday, August 15, 2014

Assessment of unconventional oil and gas resources in Northeast Mexico, 2014

National and Global Petroleum Assessment

USGS Publication: Fact Sheet 2014–3047
Using a geology-based assessment methodology, the U.S. Geological Survey estimated means of 0.78 billion barrels of unconventional oil, 23.5 trillion cubic feet of unconventional gas, and 0.88 billion barrels of natural gas liquids in the Sabinas Basin, Burgos Basin, and Tampico-Misantla Basin provinces of northeast Mexico.


Wednesday, July 16, 2014

Assessment of Undiscovered, Technically Recoverable Oil and Gas Resources of Armenia, 2014

National and Global Petroleum Assessment

USGS Publication: Fact Sheet 2014–3048
Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean volumes of 1 million barrels of undiscovered, technically recoverable conventional oil and 6 billion cubic feet of undiscovered, technically recoverable conventional natural gas in Armenia.


Tuesday, December 03, 2013

Undiscovered Gas Resources in the Alum Shale, Denmark, 2013

Press Release & Publication
Using a geology-based assessment methodology, the U.S. Geological Survey estimates a mean undiscovered volume of 6.9 trillion cubic feet of natural gas in the Alum Shale in Denmark.


Friday, November 01, 2013

Supporting Data for the U.S. Geological Survey 2012 World Assessment of Undiscovered Oil and Gas Resources

USGS Publication: Digital Data Series 69–FF
This report provides information pertaining to the 2012 U.S. Geological Survey assessment of undiscovered, technically recoverable conventional oil and gas resources of the world, exclusive of the United States. Some of the results were previously published, mostly in USGS fact sheet series.


Friday, July 19, 2013

Commercial Possibilities for Stranded Conventional Gas from Alaska’s North Slope

Journal: Natural Resources Research

Outside Publication
This study defines stranded conventional gas resources as gas in identified (discovered and appraised) conventional oil and gas accumulations which are not currently commercially producible for either physical or economic reasons. The discovered conventional North Slope gas is stranded because there is currently no transportation system to take the gas to a market.


Monday, March 11, 2013

Undiscovered Conventional Oil and Gas Resources of the Western Canada

Assessment of Undiscovered Conventional Oil and Gas Resources of the Western Canada Sedimentary Basin, Canada, 2012

USGS Publication: Fact Sheet 2012–3148
USGS geoscience-based assessment of undiscovered oil and gas resources of provinces within the Western Canada Sedimentary Basin. The Western Canada Sedimentary Basin primarily comprises the (1) Alberta Basin Province of Alberta, eastern British Columbia, and the southwestern Northwest Territories; (2) the Williston Basin Province of Saskatchewan, southeastern Alberta, and southern Manitoba; and (3) the Rocky Mountain Deformed Belt Province of western Alberta and eastern British Columbia.



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Overview

Relative Undiscovered Gas Volumes
Relative Volumes of Asssessed
Undiscovered Gas Resources in 3D.

The USGS World Energy Project conducts geologic studies that provide an understanding of the quantity, quality, and geologic distribution of world oil and gas resources. Our geologic studies are conducted in an impartial manner and are performed in collaboration and partnership with energy experts within and outside government. Through synthesis and improved understanding of global oil and gas data, we shall establish a geologic basis for predicting energy production trends, we shall discuss logical implications and consequences of energy occurrence for public policy, and we shall provide for the education of society about energy issues.

Energy is critical to the health and vitality of U.S. and world societies. Historically, prosperity has been directly correlated with energy use. However, energy resources are unevenly distributed throughout the world, and exploration and development of those energy resources is risky. Some have argued that conflicting needs for sources of energy have been the principal causes for major world conflicts in the twentieth century. The World Energy Project provides geologic information and resource assessments which help reduce some of the risks and may directly impact public policy.

Credible scientific information on the abundance and geologic distribution of energy is critically needed for two ongoing national struggles. The first struggle has been for U.S. energy self sufficiency, particularly for petroleum. The U.S. is currently highly dependent upon other nations for the oil that constitutes approximately 50%  of our energy use. The United States is an enormous producer of energy. We are currently the world's largest producer of oil, nuclear, and hydro power combined, and the second largest producer of natural gas and coal. However, the United States alone uses approximately one quarter of the world's supply of energy, but has only about 5% of the world’s population. As of early 2000, the U.S. consumes almost 12 million barrels daily more energy than we produce (in oil equivalent); the shortfall is made up by imported oil. Despite the most technologically advanced exploration and production systems in the world operating in a deregulated environment, U.S. oil and NGL reserves have decreased 30 percent from the high in 1970. The primary reason petroleum reserves have not fallen further is the technological advances in exploration and production that provide additional reserves through the phenomenon of reserve growth. According to the Energy Information Administration, over the past fifteen years an additional million barrels of oil per day has been required to meet world energy demands. Survival of the oil industry within the U.S. today is a story of increasing the life of old fields technologically or exploring in very expensive areas such as the deep Gulf of Mexico or the Arctic.

The second energy struggle is outside the U.S. This struggle is economic, political, and technological, and is waged on the field of uneven geologic distribution of energy resources. The ongoing struggle for energy has been manifested in a military conflict in the Middle East, political struggles in the Former Soviet Union, and financial struggles throughout the world. In order to maintain prosperity, the United States seeks to fill its growing demand for energy internationally. The risks in other energy-rich areas of the world are numerous. New political, financial, and technical risks are added to all the risks traditionally associated with exploration and production of energy. U.S. petroleum companies have increasingly chosen to take their risks internationally because they feel that the greater financial risk overseas is offset by the potential for greater financial rewards. The immense aggregate risks overseas compound the overall financial risk to the Nation of the increasing cost of importing oil. More dollars are spent on buying foreign oil than on buying foreign cars.

The USGS World Energy Project provides public information and analysis to companies, investors and policy makers alike. Basic information for petroleum resource assessment in foreign lands, if available, is difficult to obtain. In the past only large multinational companies have performed such surveys and then only for the benefit of the individual company. USGS products are available to the public; industry, private investors, and the government have already indicated considerable interest.

The essence of the argument for the study of petroleum resources worldwide was captured in the recent strategic plan for the USGS in the Year 2005, where it was determined that increasing emphasis on international mineral and energy studies will be matched by decreasing emphasis on domestic mineral and energy studies. Outside the USGS, as noted above, this change has already taken place. The USGS World Energy Project provides science-based, impartial, comprehensive information for decision makers, policy makers, and the scientific and industrial community to help ensure that the U.S. has a stable supply of energy for future economic and societal needs.

Christopher Schenk
Project Chief


 
 

Assessments

Latest Assessments Browse Graphic
Updated Assessments

Updated International Assessments (Post 2000 Assessment)

The World Petroleum Assessment Team has recently been updating assessments conducted during the comprehensive 2000 assessment as well as conducting new ones in areas around the world that were not examined previously.  This work is being conducted using the latest assessment methodologies for both continuous as well as conventional resources. 

 

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Arctic Assessment Preview
Lisburne Group

2008 Circum-Arctic Resource Appraisal

The U.S. Geological Survey (USGS) has completed an assessment of undiscovered conventional oil and gas resources in all areas north of the Arctic Circle. Using a geology based probabilistic methodology, the USGS estimated the occurrence of undiscovered oil and gas in 33 geologic provinces thought to be prospective for petroleum. The sum of the mean estimates for each province indicates that 90 billion barrels of oil, 1,669 trillion cubic feet of natural gas, and 44 billion barrels of natural gas liquids may remain to be found in the Arctic, of which approximately 84 percent is expected to occur in offshore areas. 

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Enter Section 508 Text Here
World Assessment Regions

2000 World Petroleum Assessment

The USGS undertook this world petroleum assessment in order to provide impartial, scientifically based, societally relevant petroleum-resource information essential to the economic and strategic security of the United States.  This assessment is based on extensive geologic studies as opposed to statistical analysis. A team of more than 40 geoscientists and additional supporting staff conducted the study over a five-year period from 1995 to 2000. The petroleum assessed occurs in fields exceeding a stated minimum size, which varies between 1 and 20 million barrels of oil equivalent in different areas, and in accumulation categories judged to be viable in a 30-year forecast span.

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Data

2012 World Assessment Data (DDS69-FF)

Tabular and spatial data in support of the 2012 World Assessment have been released and are available at: http://pubs.usgs.gov/dds/dds-069/dds-069-ff/

2000 World Assessment Data (DDS60)

These data files are from the fourth CD-ROM of a four CD-ROM set documenting and supporting the USGS World Petroleum Assessment 2000–Description and Results report. The fourth CD-ROM contains archival data and supporting software permitting the user to query databases and perform further analysis.  Access to these data can be found here.

Spatial Data [+]

Spatial Data Files from World Petroleum Assessment 2000 (DDS 60)
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au_sum.e00 - Assessment Unit Summary Data (Robinson projection)    Download View
au_sumg.e00 - Assessment Unit Summary Data (geographic coordinates) Download Download View
tps_geo.e00 - Total Petroleum System Geologic Characterizations (Robinson projection)   Download View
tps_geog.e00 -Total Petroleum System Geologic Characterizations (geographic coordinates) Download Download View
tps_sum.e00 - Total Petroleum System Summary Data (Robinson projection)   Download View
tps_sumg.e00 - Total Petroleum System Summary Data (geographic coordinates) Download Download View
wep_prv.e00 - Geologic Provinces of the World (Robinson projection)    Download View
wep_prvg.e00 - Geologic Provinces of the World (geographic coordinates)  Download Download View

Assessment Tables [+]

Data Tables from World Petroleum Assessment 2000 (DDS 60)

The following files contain the supporting data for the World Petroleum Assessment and are the source for the various plots, data tables, and summary tables used in this report.

auvol.tab - Table contains volumetric data of discovered petroleum in regions, provinces, total petroleum systems, and assessment units. These volumes are the sum of volumes of individual fields reported in Petroconsultants (1996) and NRG Associates (1995).
bin_au.tab - Table contains the field size distribution of undiscovered fields.  Results are divided into binned field-size classes and reported at the assessment unit level. The class limits are in millions of barrels of oil equivalent (MMBOE), where 6000 cubic feet of gas equals one equivalent barrel. Each assessment unit is represented by two rows, one for oil fields and one for gas fields.
bin_prov.tab - Table contains the distribution of field sizes of undiscovered fields.  Results are divided into binned field-size classes and reported at the province level. The class limits are in millions of barrels of oil equivalent (MMBOE), where 6000 cubic feet of gas equals one equivalent barrel. Each province is represented by two rows, oil fields and gas fields, respectively.
frac_au.tab - Table contains fractiles from the results of the Monte Carlo calculations.  Results are reported at the assessment unit level. Each assessment unit is represented by seven rows (distinguished by the values of columns 3 and 4): oil in oil fields; gas in oil fields; natural gas liquids (NGL) in oil fields; the largest undiscovered oil field; gas in gas fields; liquids in gas fields; and the largest undiscovered gas field.
gdisc.tab - Table contains information regarding known and grown volumes of petroleum in an assessment unit. Grown field sizes are defined as known field sizes that were adjusted upward to account for estimated future reserve growth. These tables contain 54 columns.  NA means not applicable and shown either in place of volumes for which only one field is present.
input.tab - Table contains input data from the Seventh Approximation World Petroleum Assessment Data Forms for Conventional Assessment Units used in this report. For some Canadian assessment units, pool data, rather than field data, are reported. Blank cells represent no data. This table contains 147 columns.
kdisc.tab - Table contains information regarding known and grown volumes of petroleum in an assessment unit. Grown field sizes are defined as known field sizes that were adjusted upward to account for estimated future reserve growth. These tables contain 54 columns.  NA means not applicable and shown in place of volumes for which only one field is present.
master.tab - Table contains names and codes of the hierarchical structure of assessment units that were identified in World Petroleum Assessment 2000. The hierarchical structure includes USGS-regions, provinces, total petroleum systems, and assessment units. 
provvol.tab - Table contains volumetric data of discovered petroleum in regions, provinces, total petroleum systems, and assessment units. These volumes are the sum of volumes of individual fields reported in Petroconsultants (1996) and NRG Associates (1995). These tables contains 31 columns. NA means not applicable and is shown either in place of discovered volumes for which only one field is present, or for undiscovered volumes and values calculated from these volumes in assessment units not quantitatively assessed.
regvol.tab - Table contains volumetric data of discovered petroleum in regions, provinces, total petroleum systems, and assessment units. These volumes are the sum of volumes of individual fields reported in Petroconsultants (1996) and NRG Associates (1995) database. These tables contains 31 columns. NA means not applicable and is shown either in place of discovered volumes for which only one field is present, or for undiscovered volumes and values calculated from these volumes in assessment units not quantitatively assessed.
sum_au.tab - Table contains summary results of the Monte Carlo calculations.  Results are reported at the assessment unit level. Each assessment unit is represented by two rows, oil fields and gas fields, respectively.
sum_ca.tab - Table contains the Country allocation summary results from the Monte Carlo calculations.  Results are reported at the parcel level. Each parcel is identified by the assessment unit being allocated (columns 3 and 4), the country to which the allocation is made (column 1), the onshore or offshore identification (column 2), and the field type (column 5).
sum_ct.tab - Table contains Country allocation totals from the summary results of the Monte Carlo calculations.  Results are reported at the parcel level. Each parcel is identified by the country to which the allocation is made (column 1), the summation level (column 4), and the field type (column 5). The three summation levels are onshore total, offshore total, and (grand) total. For each summation level, there are two rows; oil fields and gas fields, respectively. The structure of the Country summary totals table, sum_ct.tab, is the same as the Country summary allocation table, sum_ca.tab, so that these files can be appended if desired. The only columns treated differently are columns 2, 3, and 4.
sum_ctry.tab - Table contains summary results of the Monte Carlo calculations. Results are reported at the Country level. Each Country is represented by two rows, oil fields and  gas fields, respectively.
sum_pa.tab - Table contains province allocations from the summary results of the Monte Carlo calculations. Results are reported at the parcel level. Each parcel level is identified by the assessment unit being allocated (columns 4 and 5), the province to which the allocation is made (columns 1 and 2), the onshore or offshore identification (column 3), and the field type (column 6).
sum_prov.tab - Table contains summary results of the Monte Carlo calculations.  Results are reported at the province level. Each province is represented by two rows, oil fields and gas fields, respectively.
sum_pt.tab - Table contains the province allocation totals from the  summary of results of the Monte Carlo calculations.  Results are reported at the parcel level. Each parcel is identified by the province to which the allocation is made (columns 1 and 2), the summation level (column 5), and the field type (column 6). The three summation levels are onshore total, offshore total, and (grand) total. For each summation level, there are two rows; oil fields and gas fields, respectively. The structure of the province summary totals table, sum_pt.tab, is the same as the province summary allocation table, sum_pa.tab, so that these files can be appended if desired. The only columns treated differently are columns 3, 4, and 5.
sum_reg.tab - Table contains summary results of the Monte Carlo calculations.  Results are reported at the region level. Each region is represented by two rows, oil fields and gas fields, respectively.
sum_tps.tab - Table contains summary results of the Monte Carlo calculations.  Results are reported at the total petroleum system level. Each total petroleum system is represented by two rows, oil fields and gas fields, respectively.
tpsvol.tab - Table contains volumetric data of discovered petroleum in regions, provinces, total petroleum systems, and assessment units. These volumes are the sum of volumes of individual fields reported in Petroconsultants (1996) and NRG Associates (1995). These tables contains 31 columns. NA means not applicable and is shown either in place of discovered volumes for which only one field is present, or for undiscovered volumes and values calculated from these volumes in assessment units not quantitatively assessed.

Monte Carlo Simulation Programs [+]

Monte Carlo Simulation programs - from Chapter MC, World Petroleum Assessment 2000 (DDS 60)
 

EMCEE and Emc2 are Monte-Carlo simulation programs for assessing undiscovered conventional oil and gas resources. EMCEE allows a variety of distribution types for input, while Emc2 works with a specific set of distributions. They run as spreadsheet workbooks in Microsoft Excel. EMCEE and Emc2 require Crystal Ball, a Monte Carlo simulation program from Decisioneering, Inc. that runs in Microsoft Excel.  For futher information, refer to Chapter MC of DDS60.

README Files [+]

Readme Files - World Petroleum Assessment 2000 (DDS 60)

readme.txt - (Text File Format)
readme.pdf - (PDF Format)
readme.mac - (Macintosh Format)

Plots[+]

HP2 Plot Files from World Petroleum Assessment 2000 (DDS60)

asm.hp2 - World Assessment Units Map
contin.hp2 - Continuous and Unconventional Resources Map
prov.hp2 - World Geologic Province Map
tps.hp2 - World Total Petroleum System Map

World Geologic Maps

In support of the 2000 World Petroleum Assessment (DDS60), a series of geologic maps were captured, resulting in near global coverage of coarse resolution surface geology.  Each of these maps were published as Open-File Reports on CD but are available for use in a variety of formats. 

Access this content here.

Circum-Arctic Resources Appraisal

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2012 World Assessment Supporting Data

Access This content here.

 

Page Last Modified: Wednesday, December 04, 2013

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