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SUMMARY:Seismic IMAGES of hydraulic fracture - Leo Eisner (Schlumberger Ca
 mbridge Research)
DTSTART:20070314T163000Z
DTEND:20070314T173000Z
UID:TALK6428@talks.cam.ac.uk
CONTACT:4745
DESCRIPTION:In oil and gas production\, a process known as hydraulic fract
 uring is often used to increase productivity of aging reservoirs. Hydrauli
 c fracturing involves pumping various types of fluids under pressure down 
 a treatment well into a reservoir. When the pressurized fluid enters the r
 eservoir\, it fractures reservoir rock. To keep these fractures highly per
 meable solid particles\, known as proppant are pumped with fluid into the 
 created fractures. Creation of fractures generates microseismic events usu
 ally with magnitude below Mw=-0.5 (lowest detected events are Mw~-3). Elas
 tic waves created by these microseismic events can be monitored with geoph
 ones in a monitoring well (hydraulic fracture monitoring - HFM).\n\nThese 
 datasets were analyzed as part of IMAGES project - European Union funded T
 ransfer Of Knowledge Industry-Academia Partnership between petroleum indus
 try and global earthquake seismology academic research. This talk will dis
 cuss seismological aspects of locations from the dataset acquired during h
 ydraulic fracture monitoring campaigns. I shall explain velocity model bui
 lding for HFM\, location techniques of hypocetres\, source mechanisms of t
 he induced events. 
LOCATION:Marine/Wolfson Building lecture hall
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