Towards a Common Earth Model: Combining Seismic Inversion with Basin Modeling
Kacewicz, Marek1, Wenlong
Xu2 (1) Unocal Corporation, Sugar Land, TX (2) Unocal Thailand, Ltd,
Recent advances in 3D basin modeling include utilization of parallel algorithms for solving classic Navier-Stokes equations and application of invasion percolation based methods designed for fast hydrocarbon migration modeling. These combined with the availability of excellent visualization tools and easy access to Linux clusters have opened a new era in data interpretation and integration. Basin modelers are able to handle much larger volumes of data 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 inversion 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 data. This most likely is an indication of some problems with input rock properties. Saturation data generated by basin models can be utilized to improve seismic inversion. Multiple iterations between seismic inversion and basin modeling provide a foundation for a new approach in earth modeling, which may lead to more reliable final products.
presents methodology and workflows for building integrated seismic inversion /
basin models. Case studies from SE Asia and the