A crosshole experiment was carried out in a layered sedimentary environment in which a
normal fault is known to cut through the section. Initial traveltime inversions produced stable …

Anisotropy is often observed due to the thin layering or aligned micro‐structures, like small
fractures. At the scale of cross‐well tomography, the anisotropic effects cannot be neglected …

Rock brittleness and fracability of subsurface formations are two important parameters for
hydraulic fracturing in hydrocarbon reservoir production. This paper presents an effective …

High-frequency, cross-well seismic data, from the Midale oil field of southeastern
Saskatchewan, are analyzed for direct and reflected energy. The goal of the analysis is to …

Crosswell prestack migration can be accomplished by using a beautifully simple method.
The method assumes constant velocity and combines the use of elliptical impulse responses …

Cross-hole seismic data exhibit unique characteristics not seen in surface survey data or
even in vertical seismic profile data. These are, to a large extent, due to the near-horizontal …

To obtain optimal seismic reflection sections, data from individual seismic gathers must be
accurately imaged so that they can be stacked together effectively. The aspect of this …

SUMMARY A new velocity analysis method for crosswell seismic data is discussed. This
method makes use of direct arrivals of crosswell data but, unlike traditional tomographic …

The Cretaceous-Tertiary northwest-trending Sirt Basin system, Libya is a rift/sag basin
formed on Pan-African to Paleozoic-aged basement of North Africa. This study is an …

XSP-CDP mapping of crosswell seismic data continues to be a popular method of imaging
reflections between two boreholes. A key to its success is that reflection events be correctly …