We systematically describe an approach to estimate the large-scale permeability of
reservoirs using seismic emission (microseismicity) induced by fluid injection. We call this …

An asymptotic formulation of the inverse problem for flow reveals that the inversion may be
partitioned into two complementary subproblems. In the first problem the arrival time …

The concept of radius of investigation is fundamental to well test analysis and is routinely
used to design well tests and to understand the reservoir volume investigated. The radius of …

Hydraulic tomography is a method to identify the three‐dimensional spatial distribution of
hydraulic properties in the subsurface. We propose a tomographic approach providing the …

Deformation in the material overlying an active reservoir is used to monitor pressure change
at depth. A sequence of 11 field estimates allows us to construct a measure of diffusive …

The concept of depth of investigation is fundamental to well-test analysis. Much of the
current well-test analysis relies on solutions based on homogeneous or layered reservoirs …

Understanding how pressure fronts propagate (diffuse) in a reservoir formation is
fundamental to welltest analysis and reservoir drainage volume estimation. We have …

We generalize the streamline approach to transient pressure applications by introducing a"
diffusive" time of flight along streamlines. This allows us to define drainage areas or volumes …

In this study the potential of an inversion approach based on hydraulic travel time and
hydraulic attenuation tomography was assessed. Both hydraulic travel time and hydraulic …

Unconventional reservoirs are characterized by sufficiently low permeabilities so that the
pressure depletion from a producing well may not propagate far from the well during the life …