Data georeferencing and geo-database

A geodatabase is an essential data format used for editing and data management in the oil and gas industry, using numerous geographic information system (GIS) file formats. It is the physical store of geographic information such as licenses, fields, well data, prospects, leads, seismic surveys, surface facilities, environmental protected area, etc.

A GIS database allows providing a comprehensive information model for representing and managing geographic information holding feature classes, raster datasets, and attributes.

GGE  frequently provides following services:

  • Building and managing a GIS database for an asset management by starting from zero by collecting all the useful data (maps, tables, pictures, shapefiles, rasters).
  • Georeferencing and digitizing existing old maps (paper maps, PDF, jpg pictures) to create GIS layers (shapefiles and rasters) that can be easily modified, analysed and linked into all GIS systems and/or integrated into seismic interpretation projects (culture layers). Once georeferenced and sorted, all data and maps can be easily printed suiting company’s template (logo) and frequently requested as support in creating company’s portfolio.
  • Creating layers (wells, prospect and field polygons, licenses, facilities) you can easily visualize and/or modify in Arcgis explorer® or google Earth®, particularly useful for exploration geology (play maps).
  • Mapping/presentation of any kind of georeferenced layers and data using professional gis format and legends.

Digitizing, mapping

Detailed mapping and interpretation of GIS data (layers) are very often used in exploration geology or during Due Diligence processes to make fast and better exploration and business decisions.

  • Overlaying several geological and geographical layers to constrain an area of interest (“play maps”) reducing risk exposures and highlighting or confirming areas of high prospectivity
  • Calculating surfaces for seismic planning, fields or prospects area for volumes’ evaluation and/or distances to closest facilities for economic criteria
  • Gridding (using numerous gridding algorithms) and contouring of reservoir properties (depth, thickness, porosity or saturation maps)
  • Analysing using spatial tools (ArcMap®) and buffering to know maximal or minimal distance of a point of interest (wells, facilities, factories)
  • Structural and/or environmental analysis based on high resolution satellite images
  • Broad data review, data sorting and files classification, update on ops status, seismic acquisition follow-up, drilling operation follow-up, TCM follow-up, etc. are managed in-house with remote access or on-site.
  • GGE provides a private secured online server exclusively dedicated to your needs, remotely accessible and searchable.

GGE also provides following additional data support including :

  • Data loading
  • Quality check
  • Correction

NB : when not directly involved in the interpretation work, our petrophysical and geophysical staff can load technical data to applications like Interactive Petrophysics (IP), Powerlog, Geolog, Kingdom, Petrel, SeisEarth (Paradigm) and SKUA to guarantee your data quality.

When required, specific data improvement are proposed like :

  • Seismic data extraction and storage from Standard Seismic Archive Tapes (IBM 3592 JJ,JR,JA,JW,JB,JX cartridges)
  • 2D seismic data mis-tie minimisation (typically when loading several different 2D surveys)
  • Reformatted SEGYs
  • 2D and/or 3D seismic surveys merging and reformatting (including rebinning and phase-matching)
  • Petrophysical and seismic project conversion