AGU Meeting-2014 San Francisco
Taleghani1; J. M. Lorenzo2
1. Petroleum engineering,
Louisiana State University, Baton Rouge, LA, United States.
Microseismic analysis is recognized as the main method for estimating hydraulic fracture geometry. However, because of limited access to the subsurface and usually high levels of environmental noise it becomes crucial to verify assumed fracture propagation models under more controlled laboratory conditions. Considering the fact that fluid driven fractures may grow under different regimes i.e., toughness-dominated or viscous-dominated, scaling is necessary to reproduce the corresponding fracture growth regime. Scaling is achieved by constraining material deformational parameters, fluid flow rates, and fracturing-fluid viscosity for the appropriate value of the non-dimensional toughness.
Hence, we implemented hydraulic fracturing tests on
translucent plexiglass samples, at room temperature with contrasting
fracturing fluid viscosities. A modest, biaxial loading frame
creates relatively low directed principal stresses (< 1000 psi,
or less < 1 km overburden pressure). A sealed fluid conduit
generates fluid pressures (< 3000 psi) created by a positive
displacement pump. We record microseismic events on the upper
and lower faces of a thermally annealed, sample block (13 cm x 13 cm x
10 cm) with 3-component, broadband sensors (101-106).
NG33B-3831Using Intermediate-Field Terms in Locating Microseismic Events
Juan Lorenzo - Louisiana State University
Arash Dahi Taleghani - Louisiana State University
Joel LeCalvez - Schlumberger Oilfield Services
Wednesday, December 17, 201401:40 PM - 06:00 PM