Case Study: NAFTA Efficiently Migrates to the Petrel E&P Software Platform

Projects in GeoFrame reservoir characterization software are cost-effectively migrated to the Petrel platform with minimized interruption and migration risk

Challenge: Accurately and efficiently migrate large volumes of data, maps, and interpretation created using GeoFrame reservoir characterization software to the Petrel E&P software platform.

Solution: Externalize the transition to the expert transition services team at the dedicated, secure Schlumberger environment using a dedicated migration tool and conducting repeated quality checks.

Result: Successfully migrated one project per day from GeoFrame software to the Petrel platform with 100% conversion according to the technical scope.

The challenges of large-scale data migration

NAFTA a.s. is the leading Slovakian company in the exploration and production of hydrocarbons. To maintain this competitive margin, NAFTA decided to adopt the Petrel E&P software platform, specifically for its advanced technological capabilities for geophysics. However, NAFTA’s data would need to be migrated from GeoFrame reservoir characterization software, which NAFTA had initially begun using in 1996. IESX 2D/3D seismic interpretation was also used for seismic and geological data interpretation and mapping. Over nearly two decades, many types of data have been loaded and created in GeoFrame software projects, including 2D and 3D seismic data, well log data, deviation data, checkshots and markers, seismic interpretation, and grids generated with the Basemap Plus and CPS-3 advanced mapping and surface modeling software.

This large volume of seismic data, maps, and interpretations to be migrated posed major demands for both ensuring the integrity of the converted data and consuming time. NAFTA specialists performed an in-house migration of smaller GeoFrame software projects by using the Export to Petrel function in the Basemap Plus base map and the standard export functionality of CPS-3 and GeoFrame software. The migration was successful, with correct conversion of seismic data and time interpretation, although some manual data modification was required, such as adding the Z values required by the Petrel platform to the imported fault polygons and setting checkshot associations with the wells. Synthetic seismograms generated in GeoFrame software could not be migrated by this approach.

The discrepancy of the GeoFrame software’s coordinate reference system (CRS) with that in the Petrel platform posed a critical concern for correctly converting the data coordinates. Coordinates were being shifted by approximately 10 to 12 m upon conversion and required manual updating.

According to NAFTA’s exploration team, the “in-house migration of the GeoFrame software projects to the Petrel platform is a time-consuming process and in the case of large-size projects practically not viable.”

To more efficiently address the complexities of the migration to the Petrel platform and not be diverted from its E&P activities, NAFTA decided to entrust Schlumberger with the data migration of 10 large key GeoFrame software projects.

Efficient externalized transition to the Petrel platform

Schlumberger recognizes the challenges and risks facing companies performing internal data migration. A data footprint that includes well, seismic, and interpretation data is not a simple export and import exercise, and it requires an extensive commitment of dedicated personnel and resources.

To assist NAFTA with the complexities of the large-scale data migration, Schlumberger assembled a team of trained experts with advanced knowledge of both GeoFrame software and the Petrel platform. Internal tools and scripts were used to assess the quality of the projects in the GeoFrame software prior to data migration. Quality checks were also conducted throughout the migration process and during postmigration quality control in the Petrel platform by the team.

The Schlumberger offices in La Défense, France, host the transition services for GeoFrame software to the Studio E&P knowledge environment and Petrel platform. The transition setup includes the latest software releases and dedicated hardware in a secure environment for customers to fully externalize their data transition. The infrastructure enables Schlumberger to upgrade any project in the GeoFrame platform, from version 3.5 to the latest GeoFrame 2012 version, which is compatible with the dedicated GF2S migration tool. The GF2S migration tool uses one workflow for migrating all data types from GeoFrame 2012 to the most recent Petrel platform or Studio environment to transition in a shorter time frame than previously possible.

Quick, accurate migration in only 10 days

NAFTA’s decision to take full advantage of Schlumberger transition services saved the company a significant amount of time and effort. In addition to managing and reducing the risk of incorrect data migration, NAFTA gained a productivity advantage from freeing its resources for higher priority projects. Hosting the transition at Schlumberger offices also eliminated the need to install and configure transition tools onsite at NAFTA facilities.

The expert team worked with NAFTA’s experts to solve the coordinate system issue and set an objective of one day per project migration from GeoFrame software for the 10 projects, which in total corresponded to

  • global volume of 175 GB
  • 3,658 wells including deviations and checkshots
  • 8,393 logs
  • 9,431 well tops
  • 1,317 2D lines
  • 58 3D cubes
  • 939 2D and 3D horizons
  • 1,945 CPS-3 software data.

NAFTA requested a project organization in the Petrel platform that followed the structure in GeoFrame software. A survey-centric interpretation organization was employed by the expert team, grouping the wells by field, which facilitates navigating and identifying project data in the Petrel platform by former users of GeoFrame software.

NAFTA representatives were invited to visit the secure Schlumberger transition environment, providing an opportunity to present NAFTA with the initial results of the migration project and to discuss in person the details of the workflows used.

The migration objective of one day per GeoFrame software project was successfully reached. A maintenance period of 2 weeks was used by NAFTA geoscientists to validate the quality of the transition results. No anomalies were identified by NAFTA, resulting in the quick, successful closure of the project.


Download: NAFTA Efficiently Migrates to the Petrel E&P Software Platform (0.66 MB PDF)

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Data Transfer Using GeoFrame Reservoir Characterization Software

Data capture from GeoFrame 2012 source project in Basemap Plus base map versus data transferred with correct positioing to the Petrel platform using the GF2S tool.
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"Through engaging with SIS transition services, we have seen a potentially time-consuming and impractical migration project turn into a trouble-free, cost-effective solution. In the case of migrating additional projects we will be engaging the SIS transition services again."
Branislav Šály
Head of Exploration G&G
NAFTA a.s.

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