Microseismic signal processing
AssigneeVetco Grey Controls Limited
InventorsAndrew Fisher, Robert Hughes Jones, Andrew Jupe, Stephen Wilson
Life of this patent
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Abstract
Signals from microseismic events are used to obtain a parameter of reservoir such as porosity, permeability or saturation.
Claims15
A method of monitoring a reservoir by detecting a microseismic signal produced by a microseismic event, the method being applicable both for events induced by injection and extraction of fluid into and out of the reservoir, wherein a characteristic of a microseismic signal is used to investigate a process or property occurring at the source location of an individual microseismic event (as defined by a seismic source volume with a radius with the event located at the center of the volume).
A method of monitoring a reservoir by detecting a microseismic signal produced by a microseismic event, the method being applicable both for events induced by injection and extraction of fluids into and out of the reservoir, wherein the spatial and temporal relationship and/or comparison of seismic waveforms between adjacent microseismic events is used to estimate a reservoir property in the region between and including the individual event locations.
A method of monitoring a reservoir by detecting a microseismic signal produced by a microseismic event, the method being applicable both for events induced by injection and extraction of fluid into and out of the reservoir, wherein a microseismic signal is used to investigate a process occurring at any location between source and receiver locations at some point on a raypath of a wave traveling between source and receiver.
A method of monitoring a hydrocarbon reservoir by detecting a microseismic signal produced by a microseismic event, the method being applicable both for events induced by injection and extraction of fluid into and out of the reservoir, wherein a microseismic signal from one or more events is used to investigate a process occurring at location remote from the seismic event and not necessarily on a raypath between the source and receiver.
Dependencies are inferred from the claim text.