The following is a list of abstracts of issued United States patents during the review period. For additional information about issued patents, visit http://patft.uspto.gov/netahtml/PTO/srchnum.htm and enter the patent number.

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7,872,944 INVENTORS: Eisner, Leo; Fischer, Tomas; ASSIGNEE: Schlumberger Technology Corporation; ISSUE DATE: January 18, 2011

A microseismic method of monitoring fracturing operation or other passive seismic events in hydrocarbon wells is described using the steps of obtaining multi-component s-wave signals of the event; and using a linear derivative of S-wave arrival times of the signals in a first direction, an S-wave velocity and an s-wave polarization to determine at least two...

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