3D survey areas
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SARIG Metadata
Citation
Description
Data currency
Dataset status
Access
Data quality
Contact information
Metadata information
Supplementary information
Responsible party
Description
Usage
Dataset associations
Origin
Metadata management
Citation
Unique record ID:
Title: 3D Seismic Survey
Originator:
Custodian: Petroleum Group - Office of Minerals and Energy Resources, South Australia.
Jurisdiction: South Australia
Description
Abstract:
Location of ground traverses along which seismic surveys have been carried out as part of geophysical exploration for petroleum resources and research studies.
The area covered exceeds 6400 square kilometres and contains over thirty 3D surveys.
ANZLIC search words:
seismic, geophysics, seismic line, seismic survey, survey, petroleum, hydrocarbon, oil, gas, exploration, geophysics, shotpoints
Spatial domain:
Geographic extent name: South Australia
Geographic extent polygon: 129 -38.5, 129 -26, 141 -26, 141 -38.5, 129 -38.5
Bounding coordinates:
North Bounding Coordinate: -26
South Bounding Coordinate: -38.5
East Bounding Coordinate: 141
West Bounding Coordinate: 129
Data currency
Beginning date: 01JAN1981
Ending date: Current
Dataset status
Progress: In progress
Maintenance and update frequency: As required
Access
Stored data format:
Digital ArcInfo, vector data, geographicals GDA94
Available format type:
Digital ARC/INFO
Digital ArcView Shapefiles
Digital ASCII
Non-Digital Plotted maps
Access constraints:
None
Data quality
Lineage:
Source Data History: PIRSA receives seismic line location data from exploration companies as part of their statutory reporting requirements, from Government and Academic institutions and information collected by Office of Minerals and Energy Resources and its predecessors. Data is received digitally in ASCII code and UKOOA format. The data files contain surveyed and/or interpolated seismic shotpoints which define the position of the seismic line.
Processing Steps: Data received in digital form were checked and corrected as necessary before being committed to the database. The original shotpoint data were processed to filter out and reduce the number of points so that only those points required to define near-straight line segments are retained in the database. The survey areas were created from the outermost extent of inlines and crosslines which constitute the survey.
Positional accuracy:
The accuracy of the surveyed data is dependant on the survey techniques used to acquire the data and the quality of the horizontal and vertical control to which the seismic shotpoints were connected. The relative accuracy between points, rather than absolute accuracy, is the main criteria in seismic surveying methodology. The absolute accuracy is defined to be within the minimum specifications of (2.5*sqrt(kilometres length of line)) metres for horizontal accuracy and (10*sqrt(kilometres length of line)) centimetres for vertical accuracy. Generally, this accuracy is a factor of 5 times better than the minimum survey specifications. The relative accuracy between points is generally better than a couple of centimetres. The data is stored in the database to 1m precision. The original data is archived in its native format including the original precision which may be quoted to two decimal places.
Attribute accuracy:
The seismic line and survey attributes are derived from operational survey reports. Validation checks are performed periodically, resulting in an estimated 95% accuracy. These checks include comparisons between reports from the spatial dataset and other supporting data.
Logical consistency:
Highly consistent internally.
Completeness:
95% complete. Receipt of data is generally 3-6 months after a survey is completed.
Contact information
Contact organisation: Petroleum Group - Office of Minerals and Energy Resources, South Australia.
Contact position: Senior Geophysicist
Postal address: GPO Box 1671
City: Adelaide
State: South Australia
Country: Australia
Postcode: 5001
Telephone: +61 8 8463 3204
Facsimile: +61 8 8463 3229
Electronic mail address: pirsa.petroleum@sa.gov.au
Metadata information
Metadata date: 01AUG2002
Metadata reference:
Supplementary information
Refer to additional user information on our web site.
Responsible party
Responsible: Custodian / Steward
Description
Dataset classification: Derived
Spatial representation type: Vector
Feature type: Polygon
Dimension: x, y
Sample graphic:
Usage
Purpose:
To display the location of and basic data for 3D seismic surveys
Use:
Geophysical and prospectivity assessment
Use limitation:
None
Dataset associations
Dependant dataset title:
None.
Attribute information:
Attribute table type: Vector - Line
| Attribute name | SARIG attribute name | Description |
|---|---|---|
| SURVEY | Survey | PIRSA Survey code |
| NAME | Survey name | Survey name |
| DIMENSION | Dimension | Refers to how survey data is collected; either along a line or over an area (one of 2D, 2.5D or 3D) |
| PROVINCE | Province | Sedimentary basin or petroleum province within which the survey is carried out |
| TENEMENT | Tenement | Licensed areas where the survey was carried out |
| REFERENCES | References | PIRSA documents which provide associated survey information |
| OPERATOR | Operator | Company that manages survey operations within the licenced area |
| CONTRACTOR | Contractor | Company that carries out the seismic recording |
| ENERGY_SOU | Energy Sou | Device which releases energy for seismic recording |
| RECMODE | Recmode | Nature of the seismic recording (one of D (Digital) or A (Analog)) |
| INSTRUMENT | Instrument | Seismic recording instrument |
| CHANNELS | Channels | The number of geophone groups which are recorded simultaneously |
| FOLD | Fold | The multiplicity of common-midpoint data |
| LINEKMS | Linekms | Length (km) of all seismic lines which have been recorded for the survey |
| GROUP | Group Inte | The number of geophones in a group that collectively feed a single channel |
| SPVP | Spvp Inter | The distance (m) between geophone groups |
| SECURITY | Security | The status of the seismic survey (one of Open File or Confidential) |
| DATEBEG | Datebeg | The date on which the seismic survey was commenced |
| DATEEND | Dateend | The date on which the seismic survey was completed |
| ONOFF | Situation | Indicates whether the survey is anonshore or offshore survey |
| COMMENT | Comment | Additional comments that clarify survey details |
Origin
Dataset size: 57kb (ArcView shapefile)
Projection: Geographicals
Datum: Geocentric Datum of Australia (GDA94)
Metadata management
Date modified: 26AUG2002
Modified officer: Dragan Ivic, Senior Geophysicist
Date authorised:
Authorisation officer:
- Page URL: http://www.pir.sa.gov.au/minerals/sarig/metadata/seismic_lines/3d_survey_areas
- Page Last Modified: November 8, 2011