--> Towards a Common Earth Model: Combining Seismic Inversion with Basin Modeling
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Towards a Common Earth Model: Combining Seismic Previous HitInversionNext Hit with Basin Previous HitModelingNext Hit

 

Kacewicz, Marek1, Wenlong Xu2 (1) Unocal Corporation, Sugar Land, TX (2) Unocal Thailand, Ltd, Bangkok, Thailand

 

Recent advances in 3D basin Previous HitmodelingNext Hit include utilization of parallel algorithms for solv­ing classic Navier-Stokes equations and application of invasion percolation based Previous HitmethodsNext Hit designed for fast hydrocarbon migration Previous HitmodelingNext Hit. These combined with the availability of excellent visualization tools and easy access to Linux clusters have opened a new era in Previous HitdataNext Hit interpretation and integration. Basin modelers are able to handle much larger volumes of Previous HitdataNext Hit which yield a higher model resolution and much better quality of final results.

One interesting advantage of being able to handle larger basin models is the opportuni­ty to utilize full 3D seismic Previous HitinversionNext Hit results. Another advantage is the potential for model­ing basin-scale hydrocarbon migration at reservoir-scale resolution. In addition to more reli­able temperature and pore pressure predictions resulting from better constrained rock prop­erties, it is possible to identify areas where calculated oil and gas saturations do not repro­duce well Previous HitdataNext Hit. This most likely is an indication of some problems with input rock proper­ties. Saturation Previous HitdataNext Hit generated by basin models can be utilized to improve seismic Previous HitinversionNext Hit. Multiple iterations between seismic Previous HitinversionNext Hit and basin Previous HitmodelingNext Hit provide a foundation for a new approach in earth Previous HitmodelingTop, which may lead to more reliable final products.

This paper presents methodology and workflows for building integrated seismic inver­sion / basin models. Case studies from SE Asia and the Gulf of Mexico will be used to demonstrate this process and to evaluate the applicability of Navier-Stokes vs. invasion per­colation based methodologies in different geologic settings.