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Blueback ODiSI

One dimensional stochastic inversion.

A robust, rigorous, and accessible solution for seismic inversion.

A new seismic inversion technique for geophysicists.

Developed jointly by BP and Cegal

Blueback ODiSI is a facies based seismic inversion method that specifically includes only the most robust prior information in order to jointly estimate facies and reservoir properties along with their associated uncertainties.

Blueback ODiSI does not require any prior lateral constraints: the algorithm converges so that each trace can be inverted independently of its neighbors yet laterally continuity is still achieved.

The technology was originally developed by BP (Connolly & Hughes, 2013, 2014, 2016) while a version for the Petrel* E&P software platform has been developed jointly by Cegal and BP.

The solution comes fully integrated into Petrel, complementing Cegal’s Quantitative Interpretation solution Blueback Rocks QI.

Robust Seismic Inversion
QC Rock Physics Models
Optimize seismic match
QC Best matching Pseudo Wells
QC Bed Thicknesses and Transitions
Blueback ODiSI is a robust, rigorous, and accessible solution for seismic inversion.
Dynamically create and QC the Rock Physics models.
The new post inversion algorithm “Finesse” allows a better match with the seismic input data and a reduction of seismic residuals.
Blueback ODiSI Inversion QC – quick and efficient QC of the Best Match Pseudo Wells.
Dynamically create and QC bed thicknesses and transitions statistics to ensure the desired range of prior information for each geo-layer. 



Low frequency model required

Up to 5

Color inverted angle stacks simultaneously


Statistically correct pseudo-wells generated

Blueback ODiSI features

Facies based inversion

Blueback ODiSI is a robust, rigorous, and accessible solution for seismic inversion.

  • High-quality reservoir imagery
  • Produces properties and uncertainties
  • Conceptually simple but rigorous
Inversion process

The process is based on geological concepts and captures all the prior knowledge about a given field, prospect or reservoir.

  • Time Markov Chains for vertical statistic lithofacies
  • Rock Physics Models to assign parameters
  • Pseudo-wells tied locally to geological interpretation
Improved algorithms

The computing intensive algorithm is simple, robust and multi-threaded, and now includes the new post inversion algorithm “Finesse” for improved results.

  • Based on local facies optimization
  • Better match to seismic data
  • Significant residual reduction

Petrel * is a mark of SLB

Want to know more about Blueback ODiSI? We are ready to help you get started.

Related products

Blueback Rock Physics

A dynamic, powerful and easy-to-use tool that allows asset teams to optimize the value of seismic data, reduce exploration risk, uncertainty and improve reservoir understanding.

Blueback Avary

Blueback Avary, developed in collaboration with Aker BP, offers increased effectiveness, speed, and quality for seismic post-stack processing workflows.

Blueback Seismic Reservoir Characterization

Blueback Seismic Reservoir Characterization delivers high end geophysics tools for reservoir characterization.

Blueback Investigator

Blueback Investigator brings powerful cross-domain data analysis and unique visualization technology to improve your understanding of Petrel data.


Success Stories

Software Oil and Gas Success Stories
Seismic Inversion in BP: Interview with Sara Grant
Software Oil and Gas Success Stories
Cegal Aid Wintershall Dea in Nova Field Production
Software Oil and Gas Success Stories
BP Seismic Inversion Technology Commercialized by Cegal


#MeetOurTeam – Arne Kristoffer

We want to show some of our colleagues through what we’ve called #MeetOurTeam. Meet Stoffe!

Related resources

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Blueback ODiSI: Helping to Steer Your Facies Model
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