Post on 27-Dec-2015
transcript
MGIS Capstone Proposal: Procedures for Standardizing
Geohazard Assessments Sponsor: Shell Oil
Paulina Fernandez Luengo MGIS Candidate
28 March 2011
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Objectives
To develop an EP18¹ document, to be used by Geomaticians around the world, of the procedures required to carry out geohazard assessments.
¹ The term “EP18” is used by Shell to refer to a document defining the preferred standard procedures and work instructions for performing certain tasks/ functions.
Typical maps (created with ArcGIS): • Location Bathymetry• Rendered Seafloor• Seafloor Slope• Geohazards Avoidance
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Background
• Lack of standards for generating sub-surface geohazard maps
• Need for developing preferred workflows and processes to optimize efficiency and reduce costs
• Desire to ensure consistency and standardization across all operating units
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What are the benefits?
• Develop and maintain best practice• Ensure consistency and improve ease of
interpretation • Develop standardized map products• Minimize time required to perform
analyses and prepare deliverables• Facilitate transition of tasking to new
analysts• Provide time/cost-saving benefits through
increased efficiency
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Geohazards Assessment Team
• Identify sub-surface hazards- Shallow gas- Shallow Water Flow (SWF)- Gas hydrates
• Identify seafloor hazards- Slope instability- Fault scarps- Fluid expulsion- Man-made debris- Thalwegs
• Provide advice on pipeline routing and avoidance areas to exploration, development and production
- Sandy depositional systems
- Faulting
- Biological/ chemosynthetic communities
- Pockmarks- Ridges
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Geomatics Team
• Ensure geodetic integrity for all spatial data
• Convert x,y,z point data into raster and vector data
• Create geohazard map deliverables- Location Bathymetry- Rendered Seafloor- Seafloor Slope- Geohazards Avoidance
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Workflow of Geohazards Assessment
Geohazards Assessment Team
Geomatics Team
3D Survey of Area
Survey imported into
Shell proprietary subsurface application
Surfaces interpreted and depth calibrated
Export to ASCII file and convert into raster and
vector data
Geohazard maps
delivered to customer
Archived to appropriate
Shell corporate stores
Location Bathymetry Rendered Seafloor Seafloor Slope Geohazards Avoidance
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Geohazard Maps
Example of Location Bathymetry
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Geohazard Maps (con’t)
Example of Rendered Seafloor
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Geohazard Maps (con’t)
Example of Seafloor Slope
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Components of Deliverables
EP18¹ report documenting the detailed procedures and work instructions required to generate standard geohazard map products. ArcGIS topics that will be documented are:
• Coordinate Reference System• Importing/ Exporting Large ASCII files (conversion)• Gridding algorithms (IDW, Kriging, Spline)• Skewed vs Non-Skewed Grids• Hillshading (Azimuth and Altitude)• Slope• Contouring• Color Ramps• Creating custom style files• Smoothing• Labeling• Editing legend items• ArcScene/ ArcGIS Explorer
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Project Timeline
15-J un 1-J ul 15-J ul 1-Aug15-Apr 1-May 15-May 1-J un15-Feb 1-Mar 15-Mar 1-Apr
Revise based on feedback
Capstone Proposal Presentation (28 March)
Submittal of 2nd draft for interim review
Development of proposal
Create work procedures for Location Bathymetry
Submittal of 1st draft for interim review
Create work procedures for Rendered Seafloor
Revise based on feedback
Create work procedures for Seafloor Slope
Submittal of 3rd draft for interim review
Finalize Capstone
Finalize deliverables and Capstone Presentation to Shell
Review
3x
Revise
Bold = Major milestone
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Project Management Tools
Schedule• Microsoft Project to identify and keep track of
tasks, milestones and due dates (coordinated with Shell)
Communication• Weekly updates on progress via email/phone
(with Shell and advisor)• Regular face-to-face interaction (with Shell)
Quality• Several review cycles of deliverables (with Shell
and advisor)
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Thank You!
Questions?
Comments?
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Acknowledgements
Patrick KennellyCapstone AdvisorThe Pennsylvania State University
Steve LongGeo-Information ConsultantShell International Exploration & Production
Jack VeroudenGeomatics Global Discipline HeadShell International Exploration & Production