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ASIA GEOSPATIAL FORUM17 – 19 OCTOBER 2011
Hotel Mulia Senayan, Jakarta, Indonesia
By: Razali B Ahmad, Saiful Nizam B Mustafa, Afiq Juazer Rizal
Geomatics Department, Technical Services Division, PETRONAS ExplorationPETRONAS Carigali Sdn. Bhd.
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1.0 Introduction2.0 E&P Activity Cycle3.0 Challenges3.0 Complexity of E&P Data4.0 Significance of Geospatial Data Integrity 5.0 Consequences of Incorrect “G” Component.6.0 Way Forward7.0 Summary
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Area of Operations
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Geomatics Technical Authority:
– Custodian of corporate geospatial data– Verifications of proposed well / platform location(s)– Coordinates Reference System (CRS) and control surveys for
seismic acquisition
– Positioning of temporary and permanent installations (e.g. anchors, barges, rigs, platforms and wellhead) in pre-defined location(s)
– Pipeline route surveys– Shallow geohazard identification for offshore facilities– Survey and mapping support to project teams
– Subsidence measurement & monitoring (e.g. caused by reservoir compaction)
– Maintenance of maps, geoinformation, satellite imagery and GIS for emergency response centers (e.g. search & rescue, vessel tracking)
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• Technology
• Applications
• Data integrity ?????
G I S ?
- Spatial
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Petroleum Industry is location dependentPetroleum Industry is location dependent 80%80%
Blocks
Geology
HC Resources
Maps & databases
Acquire Rights
Rig moves
Construction
Pipelay construction
Precise Positioning
Maps & databases
Develop
Platform surveys
Pipeline inspection
Maps & database
Produce
Seismic
Rig moves
Wells
Maps & databases
Explore
Seismic
Geohazards
Reservoir
Environmental
Wells
Maps & databases
Appraise
Pre/as-built survey
Metocean
Environmental
Maps & databases
Abandonment
Geographical Information SystemGeographical Information System
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• To manage and maintain geospatial integrity through out the E&P Activity Cycle.
• Typical lifecycle of about 25 years.
• Failure to manage data integrity in any of the cycle will result in loss of potential discovery and investment.
• Significance of spatial data to be appreciated.
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What is the value of interpreted data without its spatial component?
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What is the value of the map without its spatial component?
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Diving BellGeophysical
SonarROV
Subsea Wellhead
Lay Barge
GNSS
LIDAR
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• Due attention is given to key components i.e. geographical or location data
• GIS helps in managing the complexity of data
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Pipelines Data
Subsurfaceinterpretation Data
Cultural DataData
Well data,Hydrocarbon production
Data
Hydrographic dataWrecks, etc.
Data
Environment
Data
Geology
Data
Seismic data,gravity & magnetic
Data
Document MgtData
Fields, Leads & Prospects Data
etc, etc, etc ...
Data
Bathymetry data Data
Survey Ops. Data LicensingData
New OpportunitiesData
Engineering dataData
G= Geographical Components
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• In E&P/oil and gas business, excellent subsurface data incomplete without
the surface coordinates i.e. its location data• E&P Companies handle varied number of Coordinates Reference Systems
(CRS) in their database.M
RS
OM
RS
O
BRSOBRSO
UTM Z
48
UTM Z
48
UTM
Z49
UTM
Z49
UTM
Z50
UTM
Z50
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• GIS is meaningless if the position i.e. “G” is suspect.Good data + wrong location = loss of investment
• To provide a link to an accurate and reliable information for better E&P project planning via simultaneous data analysis and mapping. • To ensure safe operation.• To protect people & sustain the environment• To protect business asset and reputation
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With GNNS, Coordinates are no longer unique ….
Significance of Geospatial Data Integrity
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• Coordinates are only unique when qualified by the geodetic datum/projection name.
• A point has different latitude and longitude when the geodetic datum is changed.
WGS 84
Lat 5°31’27”
Long 105°31’27”
Kertau
Lat 5°31’27”
Long 105°31’27”
Timbalai
Lat 5°31’27”
Long 105°31’27”
Lat 5°31’27”
Long 105°31’27”
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• Arjuna APN, West Java Basin 106° 59' 04.220" E 05° 25' 09.540" S
WGS 84106° 59' 04.220" E 05° 25' 09.540" S
Indonesian Datum 1974106° 59' 04.220" E 05° 25' 09.540" S
Batavia Datum106° 59' 04.220" E 05° 25' 09.540" S
~28.7 m~136.7 m
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Existing Platform
New proposed route
Existing pipeline
Existing pipelines
Barge approach to the platform
Anchor Wires
Anchor targets location with 300m radius from Pipelines
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Actual Position
$$ million
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SURVEY
INTERPRETATION
WGS84 vs. Local ~300m
Insufficient Coverage
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Proposed Well
~300m
Reservoir
$$ million WGS84 vs. Local ~300m
Reservoir
Drill at the wrong location
Coun
try
Boun
dary
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• Geomatics personnel in GIS Team.• Geomatics awareness of all GIS Team
members.• GIS need to be maintained with up-to-
date information to ensure it continuously benefit users.
• Proper workflow to maintain the integrity.
• Ensure the spatial integrity of third party data. e.g. IHS, ROBERTSON, GETECH, etc.
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*GI = Geospatial Integrity
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• GIS is meaningless if the geographical (G) component is suspect
• Mismanagement of geospatial data leads to potential loss of investment
• Sustaining the geospatial integrity is not limited to the data updates but the coordinates integrity.
• Sustaining the geospatial integrity is important to ensure the right location and safe operation.
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ASIA GEOSPATIAL FORUM17 – 19 OCTOBER 2011
Hotel Mulia Senayan, Jakarta, Indonesia