NSW Petroleum Boreholes 20140815

Brief description

## **Abstract**

This dataset and its metadata statement were supplied to the Bioregional Assessment Programme by a third party and are presented here as originally supplied.



The Petroleum Wells database stores information about petroleum wells within NSW. The NSW Petroleum Wells Database has been developed to record summary data on petroleum exploration and development drilling data for holes drilled in New South Wales. The database contains summary information about each drillhole such as location, total depth, azimuth/dip, geochemistry, wireline logs and DIGS references.



Full metadata available at: http://minview.minerals.nsw.gov.au/mv2web/mv2?cmd=MDDetail&lid=petbore



This dataset has been provided to the BA Programme for use within the programme only. Third parties should contact the NSW Department of Industry. http://www.industry.nsw.gov.au/

## **Dataset History**

Data Quality

Lineage:

The primary data source for the petroleum borehole database was company exploration reports supplied to the Department of Mineral Resources as part of the statutory reporting requirements for exploration licences. Holes drilled by Industry and Investment NSW (Minerals) are also included in the database. Initially data was held in the COGENT Oracle database. The data was exported into spreadsheets and maintained in this environment for some time. The database is now on a SQL Server platform. Data can be entered or edited using the GBIS program

Positional Accuracy:

Drillhole coordinates have been obtained from a number of sources including exploration companies and consultants. The accuracy of the drillholes varies and is often unknown. In most instances the drillhole coordinates have been measured off company exploration maps or parish/county maps and these holes have an accuracy of between 25m and 500m depending on the quality of the map displaying the holes. Where a number of holes have been drilled on one prospect they will be located accurate relative to each other.

Attribute Accuracy:

The dataset contains a number of attributes (see attribute definitions below), these values have been derived from a large number of sources (see data lineage). Overall accuracy of the attributes will vary according to many factors such as the company that reported the drillhole and the type of lease the hole was drilled on. Some companies provide the Department with exploration reports of very high standard while others submit the bare minimum of information. Likewise, exploration licences (EL's) have fairly stringent reporting requirements while older types of licences and mining leases often have reports of poor quality

Logical Consistency:

There should be a high degree of logical consistency in this data set as data from one drillhole does not depend upon other information

Completeness:

As mentioned in the attribute accuracy the completeness of the data is dependent upon the quality of the data supplied to the Department in company reports. It is not always possible to obtain all the information required for each drillhole.

Attribute Definitions

Name\tDescription

\t

OBJECTID\tAn identification code given by the database

PROJECT\tA group of drillholes - eg. PET=Petroleum, MIN=Minerals, COAL=Coal

SITE_ID\tA text value that uniquely defines a drillhole within the project that it belongs to

CONFIDENTIAL_YN\tIndicates if the hole is confidential - ie. not available to the public

PROGRAM\tUsed to identify an area/prospect where a hole/series of holes was drilled. eg Cow Flat, Angus Place

HOLE_NAME\tHole number in a program or hole name in a program (DD97GR01)

OLD_NAME\tA name of a drillhole that has been superceded by a new name

BUS_PURPOSE\tBusiness reason for drilling the hole - eg. COAL, CSM, PETROLEUM

DRILL_TYPE\tType of drill used

HOLE_STATUS\tStatus of the drillhole - eg. CASE=cased, PLUG=plugged - codes listed in GSL_HOLE_STATUS

TITLE_TYPE\tCode of type of licence where hole was drilled - eg. EL, ML, ATOE

TITLE_NO\tThe number of the title where the hole was drilled

LICENCEE\tCompany that holds the Exploartion or Mining Title

OPERATOR\tCompany doing the work eg joint venture partner

LICENCEE_ID\tCode for the company that holds the Exploartion or Mining Title

OPERATOR_ID\tCode for company doing the work eg joint venture partner

TARGET\tThe target the hole was drilled to intersect - eg. GEOCHEM, GOSSAN

CORELIB\tCore library where the core is stored

STARTPOINT\tStarting point of the drill - eg. GRND=natural ground surface, UNDG=underground

\tHOLE_TESTS

\tREPORTS

COMMENTS\tComments about the drillhole/well

TOP_STRAT\tLetter Symbol for the top stratigraphic unit intersected in the hole

TOPSTRAT\tThe top stratigraphic unit intersected in the hole

BASE_STRAT\tLetter Symbol fpr the bottom stratigraphic unit intersected in the hole

BASESTRAT\tThe bottom stratigraphic unit intersected in the hole

COMMENCED_DT\tDate the drilling of the hole commenced

COMPLETED_DT\tDate the drilling of the hole was completed

YEAR_DRILLED\tThe year the hole was drilled if cemmenced date not known

KELLY_LEVEL\tElevation in metres above sea level of the Kelly Bushing or Rotary Table

START_DEPTH\tDepth in metres that the hole started at - usually 0 but can be different depth for a wedge

END_DEPTH\tDepth in metres that the hole was stopped at

GEOPHYS_YN\tIs a geophysical log available for the drillhole?

TEXTLOG_YN\tIs a written log available for the drillhole?

GRAPHLOG_YN\tIs a graphic log available for drillhole?

COREPHOTO_YN\tAre photos of the core available?

RECOVD_COST\tCosts recovered by the department for holes drilled by the the department

\tLAT94

\tLNG94

TITLEREF\tConcatenation of TITLE_TYPE and TITLE_NO

COMPANY\tConcatenation of LICENCEE and OPERATOR



Miscellaneous

Source Pathname:

SDE GS_SPATIAL.GBV_Drillhole via FME from SQLServer GBIS Boreholes

## **Dataset Citation**

NSW Trade and Investment (2014) NSW Petroleum Boreholes 20140815. Bioregional Assessment Source Dataset. Viewed 22 June 2018, http://data.bioregionalassessments.gov.au/dataset/7629e8db-b01e-4d6e-b926-a4df07e7eebc.