USGS National Assessment of Oil and Gas Project - Shale Gas Assessment Units

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: USGS National Assessment of Oil and Gas Resources Team

Originator: Laura R.H. Biewick

Publication_Date: 2013

Title:

USGS National Assessment of Oil and Gas Project - Shale Gas Assessment Units

Geospatial_Data_Presentation_Form: Downloadable GIS Data

Publication_Information:

Publication_Place: Denver, Colorado

Publisher:

U. S. Geological Survey, Central Energy Resources Science Center

Online_Linkage:

<http://energy.usgs.gov/OilGas/AssessmentsData/NationalOilGasAssessment.aspx>

Larger_Work_Citation:

Citation_Information:

Originator: USGS National Assessment of Oil and Gas Resources Team

Originator: Laura R.H. Biewick

Publication_Date: 2013

Title: Map of Assessed Shale Gas in the United States, 2012

Geospatial_Data_Presentation_Form: Digital Maps

Series_Information:

Series_Name: U.S. Geological Survey Digital Data Series

Issue_Identification: DDS-069-Z

Publication_Information:

Publication_Place: Denver, Colorado

Publisher: U.S. Geological Survey

Online_Linkage: <https://pubs.usgs.gov/dds/dds-069/dds-069-z/>

Description:

Abstract:

The U.S. Geological Survey has compiled a map of shale gas assessments in the United States that were completed by 2012, such assessments having been included as part of the U.S. Geological Survey National Assessment of Oil and Gas Project. Using a geology-based assessment methodology, the U.S. Geological Survey quantitatively estimated potential volumes of undiscovered gas within shale-gas assessment units. These shale-gas assessment units are mapped, and square-mile cells are shown to represent proprietary shale-gas wells. The square-mile cells include gas-producing wells from shale intervals.
In some cases, shale gas formations contain gas in deeper parts of a basin and oil at shallower depths (for example, the Woodford Shale and the Eagle Ford Shale). Because a discussion of shale oil is beyond the scope of this report, only shale gas assessment units and cells are shown.
The map can be printed as a hardcopy map or downloaded for interactive analysis in a Geographic Information System data package using the ArcGIS map document (file extension MXD) and published map file (file extension PMF). Also available is a publications access table with hyperlinks to current U.S. Geological Survey shale gas assessment publications and web pages. Assessment results and geologic reports are available as completed at the U.S. Geological Survey Energy Resources Program Web Site, <http://energy.usgs.gov/OilGas/AssessmentsData/NationalOilGasAssessment.aspx>.
A historical perspective of shale gas activity in the United States is documented below and presented in a video clip included as a PowerPoint slideshow.

Purpose:

The Assessment Unit (AU) is the fundamental unit used in the National Assessment of Oil and Gas Project for the estimation of undiscovered oil and gas resources. The AU is defined within the context of the higher-level Total Petroleum System. The AU is shown here as a geographic boundary interpreted, defined, and mapped by the geologist responsible for the province and incorporates a set of known or postulated oil and (or) gas accumulations sharing similar geologic, geographic, and temporal properties within the Total Petroleum System, such as source rock, timing, migration pathways, trapping mechanism, and hydrocarbon type. The AU boundary is defined geologically as the limits of reservoir rock, geologic structures, source rock, and seal lithologies. The only exceptions to this are AUs that border the Federal-State water boundary. In these cases, the Federal-State water boundary forms part of the Assessment Unit boundary.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2012

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -165.

East_Bounding_Coordinate: -73.

North_Bounding_Coordinate: 71.

South_Bounding_Coordinate: 24.

Keywords:

Theme:

Theme_Keyword_Thesaurus: none

Theme_Keyword: National Assessment of Oil and Gas

Theme_Keyword: USGS World Energy Region 5

Theme_Keyword: Energy Resources

Theme_Keyword: Oil

Theme_Keyword: Natural Gas

Theme_Keyword: Resource Assessment

Theme_Keyword: Earth Science

Theme_Keyword: Natural Resources

Theme_Keyword: U.S. Geological Survey

Theme_Keyword: USGS

Theme_Keyword: Geology

Theme_Keyword: Assessment Unit

Theme:

Theme_Keyword_Thesaurus: ArcIMS Metadata Server Theme Codes

Theme_Keyword: geoscientificInformation

Theme:

Theme_Keyword_Thesaurus: Gateway to the Earth draft 9 28-Jun-2002

Theme_Keyword: Shale gas resources

Theme_Keyword: Natural gas resources

Theme_Keyword: Economic geology

Place:

Place_Keyword_Thesaurus: none

Place_Keyword: United States

Place_Keyword: USGS World Energy Region 5

Place_Keyword: U.S.A.

Access_Constraints: none

Use_Constraints:

Users of this geospatial database and geologic information derived therefrom should acknowledge the U.S. Geological Survey as the source of the data.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Christopher J. Schenk

Contact_Organization: U.S. Geological Survey, Central Energy Resources Science Center

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing and physical address

Address:

U.S. Geological Survey, Box 25046, MS 939, Denver Federal Center

City: Denver

State_or_Province: Colorado

Postal_Code: 80225

Country: USA

Contact_Voice_Telephone: (303) 236-5796

Contact_Electronic_Mail_Address: schenk@usgs.gov

Browse_Graphic:

Browse_Graphic_File_Name:

<http://certmapper.cr.usgs.gov/data/noga00/natl/graphic/ShaleGasAUs11g.jpg>

Browse_Graphic_File_Description: USGS Shale Gas AUs (2012)

Browse_Graphic_File_Type: JPEG

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

One attribute for the Assessment Unit coverage is the eight digit number that identifies the USGS-specific Assessment Unit. The first digit of the code indicates the World region number (5), the following three digits (5067) are the North America province number, the next two digits (506703) are the Total Petroleum System number, and the last two digits (50670365) are the Assessment Unit number. The assessment results attributes include estimated volumes of undiscovered, technically recoverable gas and natural gas liquids. For more detailed assessment results data, refer to the CD_ROM publications for the Provinces that are available at <https://pubs.usgs.gov/dds/dds-069/> or the USGS Fact Sheets that are available for each Province at the National Oil and Gas Assessment website - <http://energy.usgs.gov/OilGas/AssessmentsData/NationalOilGasAssessment.aspx>.

Logical_Consistency_Report:

The Assessment Unit boundary was defined on the basis of the surface and subsurface geology of the petroleum system elements, and oil and gas production, shows, and seeps related to the Assessment Unit. The province geologist was required to defend the geologic boundaries of each Assessment Unit in a formal geologic and petroleum system review meeting.

Completeness_Report:

The Assessment Unit was mapped in part on the data contained in the IHS Energy Group, WHCS data base for wells, and the Nehring Significant Oil and Gas Field File.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The Assessment Unit boundary represents the gross boundary of the combined geologic elements that comprise the Total Petroleum System. The Assessment Unit boundary was mapped by the province geologist and the boundary line digitally transferred using ArcGIS.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: U.S. Geological Survey Assessment Teams

Publication_Date: 2000 to 2012

Title:

Petroleum Systems and Geologic Assessment of Oil and Gas in the United States

Series_Information:

Series_Name: U.S. Geological Survey Digital Data Series

Issue_Identification: DDS-69

Publication_Information:

Publication_Place: Denver, Colorado

Publisher: U.S. Geological Survey

Type_of_Source_Media: CD-ROM

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2002-2012

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: USGS Assessment Teams

Source_Contribution:

USGS Province assessment, digital map data, undiscovered oil and gas resources

Process_Step:

Process_Description:

The province geologist mapped the Assessment Unit boundary on a hard copy or digital base map that contained data from IHS Energy Group, WHCS data base for wells, and the Nehring Significant Oil and Gas Field File. The province geologist then plotted all other available geologic, geophysical and geochemical data and information on the base map to assist in mapping the Assessment Unit boundary. Following review, the Assessment Unit boundary was digitally captured from the hard copy or digitial base map using ArcGIS.

Process_Date: 2000 to 2012

Process_Step:

Process_Description:

The attributes were added from the assessment output data file. These assessment results attributes are published on the National Assessment of Oil and Gas Fact Sheet for each Province.

Process_Date: 2000 to 2012

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Complete chain

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Entity point

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Point

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.000001

Longitude_Resolution: 0.000001

Geographic_Coordinate_Units: Decimal degrees

Geodetic_Model:

Horizontal_Datum_Name: World Geodetic System (WGS) of 1984

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137.0

Denominator_of_Flattening_Ratio: 298.257223

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: au"assessunitnum and abbreviated name"

Entity_Type_Definition:

Polygon Attribute Table. For each assessment unit, "assessunitnum" is replaced with the assessment unit number, and is followed by an abbreviation of the assessment unit name.

Entity_Type_Definition_Source: U.S. Geological Survey

Attribute:

Attribute_Label: REG_NUM

Attribute_Definition: Region Number

Attribute_Definition_Source: U.S. Geological Survey Energy Resource World Regions

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 5

Enumerated_Domain_Value_Definition: North America

Enumerated_Domain_Value_Definition_Source: common knowledge

Attribute:

Attribute_Label: REG_NAME

Attribute_Definition: Region Name

Attribute_Definition_Source: U.S. Geological Survey Energy Resource World Regions

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: North America

Enumerated_Domain_Value_Definition: country

Enumerated_Domain_Value_Definition_Source: common knowledge

Attribute:

Attribute_Label: PROVCODE

Attribute_Definition: Province Code

Attribute_Definition_Source: U.S. Geological Survey Energy Resource Provinces

Attribute_Domain_Values:

Unrepresentable_Domain: 72 provinces numbered 1 to 72

Attribute:

Attribute_Label: PROV_NAME

Attribute_Definition: Province Name

Attribute_Definition_Source: U.S. Geological Survey Energy Resource Provinces

Attribute_Domain_Values:

Unrepresentable_Domain: see <http://energy.cr.usgs.gov/oilgas/noga/>

Attribute:

Attribute_Label: TPSCODE

Attribute_Definition: Total Petroleum System Code

Attribute_Definition_Source: U.S. Geological Survey Energy Resource Total Petroleum Systems

Attribute_Domain_Values:

Unrepresentable_Domain: see <http://energy.cr.usgs.gov/oilgas/noga/>

Attribute:

Attribute_Label: TPSNAME

Attribute_Definition: Total Petroleum System Name

Attribute_Definition_Source: U.S. Geological Survey Energy Resource Total Petroleum Systems

Attribute_Domain_Values:

Unrepresentable_Domain: see <http://energy.cr.usgs.gov/oilgas/noga/>

Attribute:

Attribute_Label: ASSESSCODE

Attribute_Definition: Assessment Unit Code

Attribute_Definition_Source: U.S. Geological Survey Energy Resource Assessment Units

Attribute_Domain_Values:

Unrepresentable_Domain: see <http://energy.cr.usgs.gov/oilgas/noga/>

Attribute:

Attribute_Label: ASSESSNAME

Attribute_Definition: Assessment Unit Name

Attribute_Definition_Source: U.S. Geological Survey Energy Resource Assessment Units

Attribute_Domain_Values:

Unrepresentable_Domain: see <http://energy.cr.usgs.gov/oilgas/noga/>

Attribute:

Attribute_Label: ASSESSTYPE

Attribute_Definition: Assessment Unit Type

Attribute_Definition_Source:

U.S. Geological Survey Energy Resource Assessment Unit Types. Both conventional and continuous accumulations are assessed. All of the shale gas AUs are continuous gas.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Continuous Gas

Enumerated_Domain_Value_Definition: Type of resource

Enumerated_Domain_Value_Definition_Source: USGS

Attribute:

Attribute_Label: NAGAS_F95

Attribute_Definition:

95% probability of greater than this volume of undiscovered gas (non-associated gas) in gas accumulations in the assessment unit (in billions of cubic feet)

Attribute_Definition_Source: USGS DDS-69-B; USGS DDS-60, Chpt. AM; USGS Bulletin 2165

Attribute_Domain_Values:

Unrepresentable_Domain: stored as a floating-point value

Attribute:

Attribute_Label: NAGAS_F50

Attribute_Definition:

50% probability of greater than this volume of undiscovered gas (non-associated gas) in gas accumulations in the assessment unit (in billions of cubic feet)

Attribute_Definition_Source: USGS DDS-69-B; USGS DDS-60, Chpt. AM; USGS Bulletin 2165

Attribute_Domain_Values:

Unrepresentable_Domain: stored as a floating-point value

Attribute:

Attribute_Label: NAGAS_F5

Attribute_Definition:

5% probability of greater than this volume of undiscovered gas (non-associated gas) in gas accumulations in the assessment unit (in billions of cubic feet)

Attribute_Definition_Source: USGS DDS-69-B; USGS DDS-60, Chpt. AM; USGS Bulletin 2165

Attribute_Domain_Values:

Unrepresentable_Domain: stored as a floating-point value

Attribute:

Attribute_Label: NAGASMEAN

Attribute_Definition:

The mean estimate of volume of undiscovered gas (non-associated gas) in gas accumulations in the assessment unit (in billions of cubic feet)

Attribute_Definition_Source: USGS DDS-69-B; USGS DDS-60, Chpt. AM; USGS Bulletin 2165

Attribute_Domain_Values:

Unrepresentable_Domain: stored as a floating-point value

Attribute:

Attribute_Label: NAGASSTDEV

Attribute_Definition:

The standard deviation of the distribution of volume of undiscovered gas (non-associated gas) in gas accumulations in the assessment unit (in billions of cubic feet)

Attribute_Definition_Source: USGS DDS-69-B; USGS DDS-60, Chpt. AM; USGS Bulletin 2165

Attribute_Domain_Values:

Unrepresentable_Domain: stored as a floating-point value

Attribute:

Attribute_Label: NAGL_F95

Attribute_Definition:

95% probability of greater than this volume of undiscovered liquids in gas accumulations in the assessment unit (in millions of barrels)

Attribute_Definition_Source: USGS DDS-69-B; USGS DDS-60, Chpt. AM; USGS Bulletin 2165

Attribute_Domain_Values:

Unrepresentable_Domain: stored as a floating-point value

Attribute:

Attribute_Label: NAGL_F50

Attribute_Definition:

50% probability of greater than this volume of undiscovered liquids in gas accumulations in the assessment unit (in millions of barrels)

Attribute_Definition_Source: USGS DDS-69-B; USGS DDS-60, Chpt. AM; USGS Bulletin 2165

Attribute_Domain_Values:

Unrepresentable_Domain: stored as a floating-point value

Attribute:

Attribute_Label: NAGL_F5

Attribute_Definition:

5% probability of greater than this volume of undiscovered liquids in gas accumulations in the assessment unit (in millions of barrels)

Attribute_Definition_Source: USGS DDS-69-B; USGS DDS-60, Chpt. AM; USGS Bulletin 2165

Attribute_Domain_Values:

Unrepresentable_Domain: stored as a floating-point value

Attribute:

Attribute_Label: NAGLMEAN

Attribute_Definition:

The mean estimate of volume of undiscovered liquids in gas accumulations in the assessment unit (in millions of barrels)

Attribute_Definition_Source: USGS DDS-69-B; USGS DDS-60, Chpt. AM; USGS Bulletin 2165

Attribute_Domain_Values:

Unrepresentable_Domain: stored as a floating-point value

Attribute:

Attribute_Label: NAGLSTDEV

Attribute_Definition:

The standard deviation of the distribution of volume of undiscovered liquids in gas accumulations in the assessment unit (in millions of barrels)

Attribute_Definition_Source: USGS DDS-69-B; USGS DDS-60, Chpt. AM; USGS Bulletin 2165

Attribute_Domain_Values:

Unrepresentable_Domain: stored as a floating-point value

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: USGS Information Services

Contact_Address:

Address_Type: mailing address

Address: Box 25286 Denver Federal Center

City: Denver

State_or_Province: Colorado

Postal_Code: 80225

Country: USA

Contact_Voice_Telephone: 1-888-ASK-USGS

Contact_Facsimile_Telephone: 303-202-4693

Contact_Electronic_Mail_Address: ask@usgs.gov

Resource_Description: Downloadable Data

Distribution_Liability:

Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The U.S. Geological survey shall not be held liable for improper or incorrect use of the data described and/or contained herein. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this information product, for the most part, is in the public domain, it may also contain copyrighted materials as noted in the text. Permission to reproduce copyrighted items for other than personal use must be secured from the copyright owner.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: Shapefile

Format_Information_Content: Assessment unit geographic features and attribute data

File_Decompression_Technique: unzip

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

<http://certmapper.cr.usgs.gov/data/noga00/natl/spatial/shape/ShaleGasAU2012shp.zip>

Access_Instructions:

The URL above links to a compressed file containing shale gas Assessment Unit Boundaries.

Digital_Form:

Digital_Transfer_Information:

Format_Name: ArcGIS Geodatabase File

Format_Version_Number: 9.3

Format_Information_Content: Assessment unit geographic features and attribute data

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

<http://certmapper.cr.usgs.gov/data/noga00/natl/spatial/geodatabase/ShaleGasAU2012gdb.zip>

Access_Instructions:

The URL above links to a compressed file containing shale gas Assessment Unit Boundaries.

Digital_Form:

Digital_Transfer_Information:

Format_Name: ArcGIS Published Map File Package

Format_Information_Content:

This file contains a data package and interactive map intended for use in any ArcGIS desktop product, including the no-cost ArcGIS Reader

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

<http://certmapper.cr.usgs.gov/data/noga00/natl/spatial/pmf/ShaleGas2012pmf.zip>

Access_Instructions:

Download and unzip the package. Open the mxd within the package using ArcGIS ArcMap 9.3.1 or later. Open the pmf within the package using ArcGIS Reader or ArcGIS ArcMap.

Digital_Form:

Digital_Transfer_Information:

Format_Name: CD-ROM

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: <https://pubs.usgs.gov/dds/dds-069/dds-069-z/>

Access_Instructions: send email request to eteamdisks@usgs.gov

Offline_Option:

Offline_Media: CD-ROM

Recording_Format: unknown

Fees: None

Ordering_Instructions:

These products can be downloaded individually using any one of the Network_Resource_Name URLs above. Each of these URLs provide access to various formats of these data.

Metadata_Reference_Information:

Metadata_Date: 20120501

Metadata_Review_Date: 20110730

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey, Central Energy Resources Science Center

Contact_Person: Laura R.H. Biewick

Contact_Position: Physical Scientist

Contact_Address:

Address_Type: mailing and physical address

Address:

U.S. Geological Survey, Box 25046, MS 939, Denver Federal Center

City: Denver

State_or_Province: Colorado

Postal_Code: 80225

Country: USA

Contact_Voice_Telephone: 303-236-7773

Contact_Electronic_Mail_Address: lbiewick@usgs.gov

Contact_Instructions:

For inquiries regarding this document, please include the metadata contact person's name, dataset name, and publication series and number.

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998