Transcript GIS Applications in PCSB and Roles of Geomatics

By:
Razali B Ahmad, Saiful Nizam B Mustafa, Afiq Juazer Rizal
Geomatics Department, Technical Services Division, PETRONAS Exploration
PETRONAS Carigali Sdn. Bhd.
ASIA GEOSPATIAL FORUM
17 – 19 OCTOBER 2011
Hotel Mulia Senayan, Jakarta, Indonesia
Contents
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Introduction
E&P Activity Cycle
Challenges
Complexity of E&P Data
Significance of Geospatial Data Integrity
Consequences of Incorrect “G” Component.
Way Forward
Summary
Area of Operations
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 predefined 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)
Introduction
GIS?
• Technology
• Applications
• Data integrity ????? - Spatial
E&P Activity Cycle
Acquire Rights
Explore
Appraise
Develop
Produce
Abandonment
Blocks
Seismic
Seismic
Rig moves
Platform surveys
Geology
Rig moves
Geohazards
Construction
HC Resources
Wells
Reservoir
Maps &
databases
Maps &
databases
Environmental
Pipelay
construction
Pipeline
inspection
Wells
Maps & databases
Precise
Positioning
Pre/as-built
survey
Metocean
Environmental
Maps &
database
Maps &
databases
Maps &
databases
Petroleum Industry is location dependent
80%
Geographical Information System
Challenges
• 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.
Challenges
What is the value of interpreted data without its spatial component?
Challenges
What is the value of the map without its spatial component?
Complexity of E&P Data
GNSS
LIDAR
Lay Barge
Geophysical
Diving Bell
Subsea Wellhead
Sonar
ROV
Complexity of E&P Data
GIS in E&P
• GIS helps in managing the complexity of data
• Due attention is given to key components i.e. geographical or
location data
Significance of ‘G’ in GIS
Geology
Environment
Hydrographic data
Wrecks, etc.
Data
Data
Seismic data,
gravity & magnetic
Data
Cultural Data
Subsurface
interpretation
Data
Data
Data
Data
Pipelines
Data
Data
Bathymetry data
Well data,
Hydrocarbon production
Data
Data
Data
Survey Ops.
Data
Data
Data
Data
Engineering data
Document Mgt
Fields, Leads & Prospects
New Opportunities
Licensing
etc, etc, etc ...
G= Geographical Components
Significance of Geospatial Data Integrity
• 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.
Significance of Geospatial Data Integrity
• 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
Significance of Geospatial Data Integrity
With GNNS, Coordinates are no longer unique ….
Significance of Geospatial Data Integrity
• 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”
Lat 5°31’27”
Long 105°31’27”
Long 105°31’27”
Kertau
Timbalai
Lat 5°31’27”
Lat 5°31’27”
Long 105°31’27”
Long 105°31’27”
Significance of Geospatial Data Integrity
• Arjuna APN, West Java Basin
WGS 84
106° 59' 04.220" E
05° 25' 09.540" S
~28.7 m
106° 59' 04.220" E
05° 25' 09.540" S
Batavia Datum
106° 59' 04.220" E
05° 25' 09.540" S
Indonesian Datum 1974
106° 59' 04.220" E
05° 25' 09.540" S
~136.7 m
Consequence of Applying Incorrect “G” Component
Existing pipelines
Existing Platform
New proposed route
Barge approach
to the platform
Anchor Wires
Anchor targets location with 300m radius from Pipelines
Consequence of Applying Incorrect “G” Component
$$ million
Actual Position
Consequence of Applying Incorrect “G” Component
Insufficient Coverage
SURVEY
INTERPRETATION
WGS84 vs. Local ~300m
Consequence of Applying Incorrect “G” Component
Proposed Well
$$ million
Country
Boundary
Drill at the wrong location
WGS84 vs. Local ~300m
~300m
Reservoir
Reservoir
Way Forward
• Geomatics personnel in GIS Team.
• Geomatics awareness of all GIS Team
members.
• GIS need to be maintained with up-todate 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.
Geospatial Quality Control Workflow
*GI = Geospatial Integrity
Summary
• 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.
ASIA GEOSPATIAL FORUM
17 – 19 OCTOBER 2011
Hotel Mulia Senayan, Jakarta, Indonesia