Abstract: From Surface to Pseudo Borehole Data
Interpretation
Ala'i Riaz, C. P. A. Wapenaar
The method of pseudo borehole data
generation is a method for transforming
seismic
surface
data
into (deviated) borehole
data
in a numerical way. The generation of pseudo borehole
data
is a very useful tool in the
interpretation
of
seismic
data
: it adds a depth dimension to
seismic
data
and gives insight into to entire wave propagation through the subsurface.
In this paper some examples will be presented on transforming surface measurements into borehole data
. One of the aims is the verification and update of the macro subsurface model, by making use of inconsistencies of multi-source and offset borehole
data
together with the behaviour of non-causalities (two-way schemes). Pseudo borehole
data
will be generated for various borehole/detector configurations. The comparison of the pseudo borehole
data
with real borehole
data
and well
data
improves indirectly the integration of surface seismics and well information. Due to acquisition difference between the real borehole and surface
data
, the pseudo borehole
data
has a lower frequency band than the real borehole
data
. After proper preprocessing (including a thorough study of the sources and d
tectors used in both situations), the pseudo borehole
data
may have a better signal-to-noise ratio. In practical situations both borehole datasets may enhance each other significantly. Now the fundamental importance in the pseudo borehole
data
generation technique is that we can walk away from the well with optimally determined matching parameters at the well and extend our geological knowledge in all lateral directions (reservoir characterization).
AAPG Search and Discovery Article #90951©1996 AAPG International Conference and Exhibition, Caracas, Venezuela