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Object Lessons from a State Survey to Improve Data Discovery,
Access, and Stewardship
Denise J. Hills, Geological Survey of AlabamaStephen M. Richard, Arizona Geological Survey
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GSA Annual Meeting 29 October 2013
Sponsored by the U.S. Department of Energy under award DE-EE0002850 to the Arizona Geological Survey acting on behalf of the Association of American State Geologists
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GSA Annual Meeting
Goal of NGDS
29 October 2013
To make large quantities of geothermal-relevant
geoscience data available to the public by creating a
national, sustainable, distributed, and
interoperable network of data providers
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GSA Annual Meeting
In association with the State Oil and Gas board, the Geological Survey of Alabama (GSA) is a repository of all Oil and Gas well information in the state, including: Geophysical well logs (which may have bottom
hole temperatures (BHT) recorded) Cores, cuttings, and other physical samples,
sometimes with descriptionsFluid production and injection information
29 October 2013
Role of the GSA
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GSA Annual Meeting
These data may contain information relevant to geothermal resource development
This project was the first experience for our agency to generate large quantities of digitally preserved data in a standardized format
29 October 2013
Role of the GSA
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GSA Annual Meeting
Early on, standard data science and archival practices could be confusing for a data creator/provider, including the terminology
AZGS provided many useful resources
Webinars and workshops were conducted that greatly improved creator/provider’s understanding of expectations and of the data science field
29 October 2013
Roadblock – “Disconnect” Between Data Creators and Data Scientists
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GSA Annual Meeting
Webinar on Metadata
29 October 2013
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GSA Annual Meeting
Large project – in theory, one provider per state – each with different research practices, needs, and standards
Content models therefore went through numerous iterations, trying to capture all relevant information without unnecessary duplication
29 October 2013
Roadblock – Diverse Users and Data Creators
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GSA Annual Meeting
Example of Iterative Process
29 October 2013
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GSA Annual Meeting
Data discoverability often difficult
Much of the available information was analog
Even digital data was not always “machine-readable”
Lack of standardization and documentation of data and metadata
Provenance and quality often poor or unknown
29 October 2013
Roadblock – Data at GSA
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GSA Annual Meeting
GSA/OGB Well Web Search
29 October 2013
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GSA Annual Meeting
GSA/OGB Well Record
29 October 2013
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GSA Annual Meeting
GSA/OGB Well Form Access
29 October 2013
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GSA Annual Meeting
Example Well Data Forms – Application to Drill
29 October 2013
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GSA Annual Meeting
Example Well Data Forms – Record of Completion
29 October 2013
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GSA Annual Meeting
Example of Digital Headers Available for Download
29 October 2013
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GSA Annual Meeting
Geophysical Well Logs
29 October 2013
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GSA Annual Meeting
GSA/OGB Web Core Search
29 October 2013
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GSA Annual Meeting
Core Warehouse
29 October 2013
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GSA Annual Meeting
Preservation of Core
29 October 2013
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GSA Annual Meeting
GSA/OGB Production Search
29 October 2013
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GSA Annual Meeting
GSA/OGB Production Record
29 October 2013
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GSA Annual Meeting
Alabama Oil and Gas Wells
29 October 2013
Over 18000 permitted wells in the state (including offshore wells)
Over 16000 wells have information submitted to NGDS
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GSA Annual Meeting
Alabama Oil and Gas Wells
29 October 2013
More than 13000 wells had logs on file that might contain a BHT measurement
Over 30000 geophysical well logs had to be examined for BHT measurements
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GSA Annual Meeting
Alabama Oil and Gas Wells
29 October 2013
In all, GSA submitted more than 11500 BHT measurements from more than 6500 oil and gas wells
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GSA Annual Meeting
Tech-transfer is key to the success of a robust, usable database – and this needs to be two-way
Data providers and creators need to be aware of existing standards, how they are used, and how they may be modified to best suit their needs if necessary
29 October 2013
Lessons Learned
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GSA Annual Meeting
In the past, GSA has primarily been data generator, with little concern about interoperability
New process: To think about what all different users might need with respect to metadata, for data discovery and access, and for object/data preservation
29 October 2013
Roadblocks Overcome – A Shift in Mindset at GSA
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GSA Annual Meeting
A new web search database is in development for the GSA, with a variety of stakeholder needs addressed
NGDS Content Models provide a guide for standardization of GSA metadata beyond NGDS
While issues of data provenance, quality, and preservation remain for legacy data, standards are being discovered, developed, and applied to any new data (including samples) moving forward
29 October 2013
Moving Forward
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GSA Annual Meeting 29 October 2013