MULTIBOREHOLE SEISMIC IMAGING IN STEAM INJECTION HEAVY OIL-RECOVERY PROJECTS

被引:13
作者
MACRIDES, CG [1 ]
KANASEWICH, ER [1 ]
BHARATHA, S [1 ]
机构
[1] ESSO RESOURCES CANADA LTD,CALGARY T2G 2B3,ALBERTA,CANADA
关键词
COMPUTER SIMULATION - GEOPHYSICS - Seismic - OIL WELL LOGGING - Acoustic;
D O I
10.1190/1.1442400
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
Crosshole seismic measurements before and after steam injection were obtained for the purpose of delineating the fluid-invaded zone. The experiment, despite its limited temporal and spatial sampling, showed significant changes in seismic signature after steam injection. The seismic records of the 'before' and 'after' (steam flood) experiments were normalized by using the tube waves. Important results were obtained from power spectral studies which show significant changes after fluid injection. For higher resolution and increased constraints on the determination of the steam-invaded zone, a more sophisticaed cross-hole experiment has been designed. Computer simulation of the proposed experiment has been carried out assuming an asymmetrical shape for the steam zone. Inversion via a tomographic approach by solution of an overdetermined system of linear equations produced reconstructions that were in good agreement with the assumed shape and P wave velocity of the steam zone.
引用
收藏
页码:65 / 75
页数:11
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