Numerical Optimization and Inversion (seismic and petrophysical)​
Cheng, L., Jin, G., Michelena, R., and Tura, A., 2022, Practical Bayesian Inversions for Rock Composition and Petrophysical Endpoints in Multimineral Analysis: SPE Reservoir Evaluation & Engineering, SPE-210576-PA, 1-17.
Cheng, L., Prasad, M., Michelena, R.J., Tura, A., Akther, S., Angelov, P.V., and Srinivasa, R.N., 2022, "Using rock-physics models to validate rock composition from multimineral log analysis": Geophysics, 87, MR49–MR62.
Cheng, L., Jin, G., and Michelena, R.J., 2021, "Bayesian inversion for rock composition and petrophysical endpoints in multimineral analysis": SEG Technical Program Expanded Abstract, 2383-2387.
Michelena, R.J., Godbey, K.S., Uland, M.J., and Rodrigues, P.E., 2020, "Petrophysical multimineral analysis using genetic optimization to solve complex mineral composition in unconventional reservoirs": SEG Technical Program Expanded Abstract, 2459-2463.
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Michelena, R.J., and Godbey, K.S., 2018, iMineralysis™ as a tool to optimize petrophysical multimineral analysis: theoretical review: white paper.
Michelena, R.J., Godbey, K.S., and Angola, O.G., 2017, “Integrated facies modeling in unconventional reservoirs using a frequentist approach: example from a South Texas field”: Geophysics, 82, B219-B230.
Michelena, R.J., Angola, O., G., and Godbey, K.S., 2016, “Facies modeling in unconventional reservoirs using seismic derived facies probabilities”: SEG Technical Program Expanded Abstract, 2866-2870.
Michelena, R.J., Godbey, K.S., and Rodrigues, P.E., 2011, “Facies probabilities from multidimensional crossplots of seismic attributes: Application to tight gas Mamm Creek Field, Piceance Basin, Colorado”: The Leading Edge, 30, 62-69.
Guliyev, E., and Michelena, R.J., 2010, Inversion of converted PS data in the poststack domain for shear impedance: SEG Technical Program Expanded Abstract, 2789-2793.
Michelena, R. and Jimenez, J., 2001, Estimation of petrophysical properties using multiple attributes: perturbing linear regressions, SEG Technical Program Expanded Abstract, 1560- 1563.
Cores, D., Fung, G. M., and Michelena, R.J., 2000, “A fast and global two-point low storage optimization technique for tracing rays in 2D and 3D isotropic media”: Journal of Applied Geophysics, 45, p. 273-287.
Banchs, R., and Michelena, R.J., 2000, Well log estimates and confidence intervals by using artificial neural networks: SEG Technical Program Expanded Abstract, 1430-1432.
Contreras, P., Klíe, H., and Michelena, R.J., 1998, Estimation of elastic constants from ellipsoidal velocities in orthorhombic media: SEG Technical Program Expanded Abstract, 1491-1494.
D’Agosto, C. and Michelena, R.J., 1997, Tomographic estimation of compressional and shear wave velocities from P-S converted waves: SEG Technical Program Expanded Abstract, 1885-1888.
Michelena, R.J., Harris. J., Muir. F., 1995, Crosswell tomographic estimation of elastic constants in heterogeneous transversely isotropic media: Geophysics, 60, 774-783.
Vásquez, C. and Michelena, R.J., 1995, VSP-CDP transform in anisotropic media: Proceedings of the IV Congresso Internacional Da Sociedade Brasileira de Geofísica, 150-153.
Michelena, R.J., 1994, “Elastic constants of transversely isotropic media from constrained aperture traveltimes”: Geophysics, 59, 658-667.
Harris, J.M., Dahlhaus, L., and Michelena, R.J., 1994, P-wave anisotropy in shales from crosswell data: SEG Technical Program Expanded Abstract, 1125-1128.
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Michelena, R.J., 1993, “Anisotropic traveltime tomography”: Ph.D. Thesis, Stanford University.
Michelena, R.J., Muir, F., and Harris, J.M., 1993, “Anisotropic traveltime tomography”: Geophys. Prosp., 41, 381-412.
Michelena, R.J., 1993, “Singular-value decomposition for cross-well tomography”: Geophysics, 58, 1665-1661.
Michelena, R.J., Harris, J., and Muir, F., 1993, Tomographic estimation of elastic constants in heterogeneous transversely isotropic media: SEG Technical Program Expanded Abstract, 630-633.
Michelena, R.J., 1992, Traveltime tomography in azimuthally anisotropic media: SEG Technical Program Expanded Abstract, 757-761.
Michelena, R.J. and Harris, J. M., 1991, “Tomographic traveltime inversion using natural pixels”: Geophysics, 56, 635-653.
Harris, J.M., Lazaratos, S., and Michelena, R.J., 1990, Tomographic string inversion: SEG Technical Program Expanded Abstract, 82-85.
Michelena, R.J. and Harris, J.M., 1990, Tomographic traveltime inversion using natural pixels: SEG Technical Program Expanded Abstract, 78-81.
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