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.

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

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 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)

• Technology

• Applications

• Data integrity ?????

G I S ?

- Spatial

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

• 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.

What is the value of interpreted data without its spatial component?

What is the value of the map without its spatial component?

Diving BellGeophysical

SonarROV

Subsea Wellhead

Lay Barge

GNSS

LIDAR

• Due attention is given to key components i.e. geographical or location data

• GIS helps in managing the complexity of data

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

• 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

• 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

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”

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”

• 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

Existing Platform

New proposed route

Existing pipeline

Existing pipelines

Barge approach to the platform

Anchor Wires

Anchor targets location with 300m radius from Pipelines

Actual Position

$$ million

SURVEY

INTERPRETATION

WGS84 vs. Local ~300m

Insufficient Coverage

Proposed Well

~300m

Reservoir

$$ million WGS84 vs. Local ~300m

Reservoir

Drill at the wrong location

Coun

try

Boun

dary

• 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.

*GI = Geospatial Integrity

• 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 FORUM17 – 19 OCTOBER 2011

Hotel Mulia Senayan, Jakarta, Indonesia