U.S. Geological Survey National Produced Waters Geochemical Database v2.3
Data and Resources
U.S. Geological Survey National Produced...HTML
The U.S. Geological Survey National Produced Waters Geochemical Database v2.3...
USGSPWDB v2.3 Data DictionaryCSV
USGSPWDBv2.3 Data Dictionary.csv, defines the 190 variables contained in the...
Interactive Map of Produced Water Sample LocationsHTML
U.S. Geological Survey National Produced Waters Geochemical Database v2.3...
|Division||Energy and Minerals|
|Subdivision||Energy Resources Program|
|Contact Name||Madalyn S Blondes|
|Contact Phone||(703) 648-6509|
|Known Uses of Data||The purpose of the U.S. Geological Survey National Produced Waters Geochemical Database v2.3 is to provide all background information on the compositions of waters produced along with oil and gas to all relevant stakeholders, including industry, the government, environmental groups, and the public.|
|Data Collection Procedures|
|Data Collection Timeframe|
|Data Collection Frequency||One-time|
|Data Publishing Method||ArcGIS REST Map Service, Map Service|
|Data Publishing Frequency||One-time|
|Data Quality Procedures||Attribute Accuracy Report: Quality control of the dataset can be performed by culling based on geochemical criteria. In this version 2.3 of the provisional database, the data that fall outside of the bounds of the following criteria are flagged, rather than culled. There are six temporary columns in the database that indicate the failure to meet specific culling criteria, based on those published in Hitchon and Brulotte (1994). An “X” is placed in the columns shown in the "USGSPWDBv2.3 Data Dictionary.csv" file where the sample falls outside of the pH range of 4.5 – 10.5; where Mg > Ca, K > Cl, or K > 5 x Na; and where the charge balance error is greater than 15%. The data were kept to allow the user to make judgment calls on their quality. Logical Consistency Report: Samples with duplicate American Petroleum Institute well identification (API) codes and chemical concentrations with large numbers of significant figures in common, were culled. It is unlikely that two samples, even from the same well, will have the exact same concentrations for three or more analytes, and therefore such similarities represent true duplicates. API code, calcium (Ca), chloride (Cl), and bicarbonate (HCO3) concentrations are used for a starting duplicate search. If these analytes were detected in samples that did not appear to be true duplicates, other analytes like Na and Mg were added to the search. Care was taken to avoid false duplicates (e.g. where all three of the initial ions had null data). Completeness Report: Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details.|
|Geographic Location||United States. Bounding coordinates: West Bounding Coordinate: -162.77332 East Bounding Coordinate: -75.61 North Bounding Coordinate: 71.26424 South Bounding Coordinate: 25.2819|
|Coordinate Reference System|