Data Interchange Content Models
Each feature or observation type that is prioritized for delivery using a community data interchange format has an associated content model that defines the information contained in interoperable interchange documents that deliver data from the data system servers to client users. The content model in its simplest form is a statement that some particular entity (feature or observation) will have some list of properties. For example a content model for a record describing a book feature might include: title, author, publisher, publication date, publication place, number of pages, and an ISBN number (a URI).
To document these content models, we are using MS Excel workbooks. Each workbook includes a description of the entity type, a list of the elements (fields, attributes) in a data instance for that entity presented both as a table and a list, and lists of vocabulary terms meant as a start or example for the kinds of vocabularies that will be required in the long run for semantic interoperability. Use of the terms in these example vocabularies will facilitate migration to formal vocabularies later.
In order to actually use the content models, they must be implemented using some computer-friendly encoding scheme. The AASG project is currently using eXtensible Markup Language (XML) to implement the content models, but in view of the rate of technology evolution, other schemes may be adopted as the system matures. The important thing is that the information is encoded consistently in a structured, well documented format. This enables computer programs to parse the interchange documents and extract the desired information, and as newer encodings are adopted, conversion between formats can be automated using software.
These content models are being developed under the auspices of the AASG geothermal data project, but they are being submitted for review and adoption for use by other project partners in the NGDS and broader USGIN community. To view applications that are compatible with the NGDS, please visit the NGDS Applications page.
Title |
Summary | Most recent version | Most recent update |
|---|---|---|---|
| Well Tests |
This template defines the content model for a service that delivers well stem test data collected during development of Oil and Gas wells. Normal drilling procedures control formation pressures and fluids through the use of a hydrostatic head. Well testing brings these formation pressures and fluids to the surface. Data collected during the test procedure will be provided through the well test feature service. Types of tests include Production, G10, Drill Stem, Drawdown, Buildup, and other well test types. |
1.000 | Mar 6 2013 |
| Well Log Observation |
This workbook describes a content model for well log observation features. These will be point features that locate the well origin for a well bore from which a well log is available. The well log observation record describes the log (type, top and bottom of logged interval) and provides links to representations of the actual log data, which typically will be either a paper copy, scanned image, or LAS file. |
0.800 | Jun 21 2012 |
| Well Log Data Compilation Workbook |
This workbook is designed as a guideline for compiling information from well log headers and well records. Information consolidated in this workbook will be used to populate multiple worksheets required to provide related services (the Well Header and Borehole Temperature data delivery ) and to populate Metadata records for single-source, well log documents and images (e.g. PDF, TIFF, JPG, or LAS). FOR WELL LOGS SUBMISSIONS, PLEASE USE THE WELL LOG OBSERVATION CONTENT MODEL. |
1.420 | Feb 6 2012 |
| Well Header |
A well is a facility defined by its function to extract fluids from within the earth. A well may be a simple hole in the ground (generally not the kind of wells we're interested in here...), but in general will consist of a dug shaft or drilled borehole. Drilled wells may include one or more boreholes (well bores) that are accessed from the surface at an origin collar, which defines the origin of the well. Individual boreholes in the well my have origin points (collars) that are located within existing boreholes in the well (e.g. sidetracks). The most common situation, especially for water wells, is a well consisting of a single borehole with a collar that is coincident with the well origin. Well header features represent individual wells, and are the anchor for a variety of observations and other features. |
1.510 | Feb 6 2012 |
| Well Fluid Production |
This workbook documents a content model for exchange of information about fluid production for a given well. A generic model is intended to allow for a variety of flows from a well including oil, gas, and water as well as steam production. **PLEASE NOTE:** |
1.000 | Oct 15 2012 |
| Volcanic Vents |
This spreadsheet indicates the content requested for features representing active volcanic vent data. This simple content model is intended to identify recently active volcanic vents that may indicate areas of active hydrothermal systems. Detailed geophysical or geodetic information related to active magma movement and prediction of eruptive activity are out of scope. |
1.430 | Feb 27 2013 |
| Thermal/Hot Spring Feature |
This spreadsheet indicates the content requested for basic data characterizing a hot spring feature for the AASG geothermal data project. Typically, water temperatures are recorded with other information such as water quality or chemical analysis from a particular spring. The temperature and flow rate reported here are meant to be generalized characterization. Other observation services should be used to report time series of temperature or flow measurements. Chemical analytical data is also reported by a separate observation service. This sheet may be used to compile multiple temperature or flow rate observations for individual springs as well. |
1.610 | Jul 6 2012 |
| Thermal Conductivity |
This spreadsheet indicates the content requested for features representing thermal conductivity observations. Design is focused on thermal conductivity measurements/observations portrayed as geospatial points with an associated depth, TC value, headerURI, construction information, and related resources. Thermal Conductivity data for the geothermal data system is intended as a tool to identify areas that may be favorable for geothermal energy production. Each record should contain measurement values, location, measurement type, and citations for the data. |
2.010 | Mar 29 2012 |
| Seismic Event Hypocenter |
This template defines the content model for a service that delivers seismic event hypocenter observations. Many of these will be standard map location and IDs, but other information may be delivered. Much of the variation will concern procedures used to recorded events, citations, and possible other collected data that may be useful for geothermal resource research. The seismic event hypocenter template should be used when compiling geo data from maps and field data. The content model presented here is intended to present key information necessary to query a seismic event hypocenter observation service and to evaluate the reported activity and potentially related features (faults). |
1.700 | Apr 26 2012 |
| Rock Chemistry |
RockChemistryAnalysis-Basic contains fields for information used to discover and retrieve chemical analyses meeting various criteria, and to evaluate the reported results. These fields would be reported along with a collection of analytes from the different suites proposed on the suites table. |
0.400 | Feb 27 2013 |
| Radiogenic Heat Production |
This workbook documents a content model for interchange documents with data from measurements of Radiogenic Heat Production based on analysis of individual rock samples. This content model is currently in review by the GDSDPWG working group. |
0.500 | Oct 2 2012 |
| Power Plant Production |
This workbook documents a content model for reporting electrical power production. In the context of NGDS, these will normally be geothermal power plants, but the content model is not unique to a single power plant type. This content model is currently in review by the GDSDPWG working group. |
0.800 | Sep 28 2012 |
| Power Plant Facility |
This spreadsheet contains content requested for features representing Geothermal Power Plant locations. Design is focused on power plants portrayed as geospatial points with an associated plant type, capacity in megawatts, and use application. Power plant data for the geothermal data system is intended as a tool to identify sites with existing power plants. Thus, the content model may not include detailed information that would be important for determining geothermal potential; such information should be accessed by including related resource links. As such, data should be restricted to records for existing facilities. |
0.200 | Mar 21 2012 |
| Powell Cummings Geothermometry |
The Powell and Cummings Geothermometry content model reports gas and liquid analytes. Field headings match those in the Powell and Cummings, 2010 spreadsheets and can be directly inputted into their model, which creates numerous ternary diagrams and other Excel graphics to create a geothermomerty report. |
0.100 | Oct 19 2012 |
| Physical Sample |
This workbook documents a content model for basic data characterizing a physical sample. This content model is currently in review by the GDSDPWG working group. |
0.800 | Sep 25 2012 |
| Metadata |
This template is for use in compiling metadata content in a structured tabular format that can be automatically transformed into any of several metadata encoding and content schemes. The content is based on the USGIN Recommended Metadata Model. The goal of this template is to make metadata creation easier while still complying to metadata requirements for the:
This spreadsheet is somewhat different from other templates in that the column names in the spreadsheet are not precisely the same as xml elements in the interchange document used to transport the metadata content. Metadata is being encoding for the NGDS using ISO19139 xml encoding of ISO 19115 content. This is a complex XML schema that can not be fully represented in the flat table format offered by a spreadsheet. Column names in the spreadsheet correspond to element names in the XML loosely. See also: USGIN content recommendations for geoscience information resources. USGIN full ISO 19139 metadata profile (ISO 19115 and ISO 19119). Not for the faint of heart. |
1.350 | Jul 10 2012 |
| Heat Pump Facility |
This spreadsheet indicates the content requested for features representing heat pump facility locations. Design is focused on sites/facilities portrayed as geospatial points with associated facility type, use application, and operational date. Heat Pump facility data for the geothermal data system is intended as a tool to identify information related to facility construction and location, thus the content model may not include detailed information. Such information should be accessed by including related resource links. As such, data is intended to be restricted to records for existing heat pump facilities. |
0.600 | Mar 21 2012 |
| Heat Flow |
This spreadsheet indicates the content requested for observation features representing Heat Flow measurements. The content model is based on specifications gathered from the SMU Heat Flow database, and has been extended to include the specifics of Heat Flow data from other parties. Minimal required features include Observation URI, Well Name, Header URI, Label, County, State, Latitude and Longitude Degrees, Source, Driller Depth, Interval, Thermal Conductivity, Gradient, Heat Flow, and Heat Flow Method. |
1.230 | Jun 25 2012 |
| Geothermal Fluid Production |
This template defines the content model for a service that delivers geothermal fluid production observations. Many of these will be a standard map location and production volume, but other information may be delivered. The geothermal fluid production content model is designed to be used for data compilation from publications, reports, and databases. This content model is intended to present key information necessary to query a geothermal fluid production observation service and to evaluate the reported data. **PLEASE NOTE:** This spreadsheet is still under review; please contact us before using it. |
1.000 | Oct 15 2012 |
| Geothermal Area |
This package contains both an Excel spreadsheet and an accompanying personal geodatabase (PGD) for data delivery of a Geothermal Area dataset (polygons). Design is focused on providing characteristics of sites identified as having geothermal potential. Geothermal area content for the state geothermal data system is intended as a tool to identify areas that may be associated with geothermal resource potential. Thus, the content model does not include specific measurements/data collection information that would be important for analysis; such information should be accessed by querying other related data sets in the area of interest such as borehole temperature observation services, thermal conductivity services, and published reports. The deliverable is the personal geodatabase containing the geometry information. |
0.500 | Mar 21 2012 |
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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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