UncerTZ Consortium - Time to Depth Conversion Evolved


Courtesy of Geovariances

Near the end of 2015 Geovariances committed itself into building a new, sophisticated tool for Time to Depth conversion in Reservoir Characterization. The challenges petitioned by the consortium partners were not easy. It included features such as: more choices in conversion (and less of a “black box”), uncertainty characterization, inclusion of faults in the conversion procedure, easy to use software, fast to operate so that it can be included in a bigger workflow, among others.

Geovariances already had past experience in building Time to Depth conversion software such as Isatoil but this new potential tool far exceeded the former package. In fact, the new tool presented several unheard features in any of the software packages currently available in the market. We were aiming for an actual scientific and technical innovation in this field of reservoir modelling. And there was work to be done.

Geovariances assembled a team of developers and scientists and brought Mines ParisTech to the consortium, gaining the necessary Research and Development capability that would enable us to get to the point we are today. We’ve meet experts in reservoir characterization and geophysics, debated with our Consortium partners and, point by point, decided which methodologies, and what parameters an User would need to have full control of the Time to Depth conversion procedure.

From the list that came out of those deliberations we had to think of a way of transforming the complexity of the science into an easy to use toolbox. Well…, we shall not say how many prototypes were made before finally opting for an interface that appeased all participants. But in the end we actually had something that was fast, reliable and intuitive. The user could fully build a scenario for Time to Depth conversion in mere minutes. And re-use it. And edit it. And fine tune it. And document it.

This was achieved by a shift in paradigm in software usability. We started toying with the idea that perhaps most things could be done automatically. And the user should only spend time in fine tuning the parameters that are of interest for its case study. So we came up with this crazy idea. You tell us what seismic surfaces interpretations you want to convert to depth and our tool will automatically build the defaults for your case study and make it ready to run. If you don’t agree with the arguments of this or that formula, no worries, you can fine tune it. If you dislike having a fully sequential approach, no problem, just change that. The remaining parameters will still be there.

If a user needs to spend time, it should spend it doing what it knows how to do best. And for that it needs adequate tools. The UncerTZ Consortium was never about building a single tool to perform Time to Depth Conversion. It is about building a package of tools to solve a myriad of problems in the Time to Depth Conversion field of science. As so you need pre-processing tools to check the quality of the input data and propose corrections. You need post-processing tools to analyze uncertainties, calculate reservoir properties or just document your results. You need tools that allow you to experiment and come up with your own, optimal, Time to Depth Conversion.

This, still ongoing, effort to provide the user with an easy and intuitive experience, while retaining a solid science behind it, has been proving fruitful. Our Consortium partners shared their satisfaction for both the results we keep obtaining and the vision we are aiming to. We are confident that in the future we will have more than a top-quality Time to Depth Conversion tool. We will have the best Time to Depth Conversion tool.

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