Patent ID: 8730762

Claim:
A method to make seismic measurements using a seismic source disposed in a cased wellbore, comprising: providing one or more seismic sources carried on a source conveyance mechanism; providing one or more seismic receivers; running the one or more seismic sources into or out of the wellbore; positioning the one or more seismic sources at one or more locations in the wellbore by controlling the conveyance mechanism using a set of computer-controlled instructions; making the seismic measurements at the one or more locations by activating the one or more seismic sources and detecting a seismic source signal using the seismic receivers, the one or more seismic sources being activated by sequencing drive waveforms based upon sonic or density log data; and prior to making each seismic measurement, magnetically clamping the one or more seismic sources to the cased wellbore.