Artículos de revistas
Pressure And Saturation Estimation From P And S Impedances: A Theoretical Study
Registro en:
Journal Of Geophysics And Engineering. , v. 9, n. 5, p. 447 - 460, 2012.
17422132
10.1088/1742-2132/9/5/447
2-s2.0-84865986070
Autor
Davolio A.
Maschio C.
Schiozer D.J.
Institución
Resumen
This work represents the first step of a study to integrate time lapse seismic and reservoir engineering data where a petro-elastic inversion from seismic data to pressure and saturation is presented. This inversion is made through an optimization procedure. In order to better understand and validate the initial step of the methodology, synthetic data (initially free of noise and errors) have been used. Through this ideal set of data, it was possible to show that pressure and saturation can be extracted from P and S impedances using only one seismic survey (3D inversion). It is also shown that this 3D approach is not robust when errors are assumed in reservoir data and it fails when, for instance, uncertainty in porosity data occurs. Thus, an improvement is made and the algorithm is rewritten based on 4D differences that diminish the wrong reservoir data effect. For both algorithms (3D and 4D), we have presented a discussion of the objective function behaviour concerning the use of P and S impedances simultaneously, the initial guess and the solution space. A sensitivity analysis discussing the influence of porosity and the dynamic properties on P and S impedances for 3D and 4D approaches is also presented. After understanding the inversion process behaviour for an ideal data set, an analysis of its results assuming different combinations of pressure and saturation variations and including some errors in the data set used is presented in the last subsections. © 2012 Sinopec Geophysical Research Institute. 9 5 447 460 Avseth, P., Mukerji, T., Mavko, G., (2005) Quantitative Seismic Interpretation: Applying Rock Physics Tools to Reduce Interpretations Risk, , 10.1017/CBO9780511600074 Batzle, M., Wang, Z., Seismic properties of pore fluids (1992) Geophysics, 57, pp. 1396-1408 Castro, S.A., Caers, J., Otterlei, C.M., Meisingset, H., Hoye, T., Gomel, P., Zachariassen, E., Incorporating 4D seismic data into reservoir models while honoring production and geologic data: A case study (2009) Leading Edge, 28 (12), pp. 1498-1506. , 10.1190/1.3272706 1070-485X Dadashpour, M., Echeverría-Ciaurri, D., Kleppe, J., Landro, M., Porosity and permeability estimation by integration of production and time-lapse near and far offset seismic data (2009) J. Geophys. Eng., 6 (4), pp. 325-344. , 10.1088/1742-2132/6/4/001 1742-2132 Dadashpour, M., Landro, M., Kleppe, J., Nonlinear inversion for estimating reservoir parameters from time-lapse seismic data (2008) J. Geophys. Eng., 5 (1), pp. 54-66. , 10.1088/1742-2132/5/1/006 1742-2132 Davolio, A., Maschio, C., Schiozer, D., Incorporating 4D seismic attributes into history matching process through an inversion scheme (2011) SPE142946 SPE EUROPEC/EAGE Ann. Conf. and Exhibition Fahimuddin, A., Aanonsen, S., Skjervheim, J.A., Ensemble based 4D seismic history matching: Integration of different levels and types of seismic data (2010) SPE131453SPE EUROPEC/EAGE Ann. Conf. and Exhibition Landro, M., Discrimination between pressure and fluid saturation changes from time-lapse seismic data (2001) Geophysics, 66 (3), pp. 836-844 MacBeth, C., Floricich, M., Soldo, J., Going quantitative with 4D seismic analysis (2006) Geophys. Prospect., 54 (3), pp. 303-317. , 10.1111/j.1365-2478.2006.00536.x 0016-8025 Mavko, G., Mukerji, T., Dvorkin, J., (2003) The Rock Physics Handbook: Tools for Seismic Analysis in Porous Media Souza, R.M., Machado, A.F., Muneratto, F.P., Schiozer, D.J., Iterative history matching technique for estimation reservoir parameters from seismic data (2010) SPE131617SPE EUROPEC/EAGE Ann. Conf. and Exhibition Souza, R.M., Muneratto, F.P., Schiozer, D.J., Quantitative integration of time-lapse derived information in a history matching procedure (2011) SPE143009 SPE EUROPEC/EAGE Ann. Conf. and Exhibition Tura, A., Lumley, D.E., Estimating pressure and saturation changes from time-lapse AVO data (1999) SEG Expanded Abstracts Tuttle, C., Pelissier, M., Barnes, M., Tribe, J., Persad, K., A seismically constrained reservoir modeling workflow: Case study (2009) Leading Edge, 28 (12), pp. 1492-1497. , 10.1190/1.3272705 1070-485X