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Hydromechanical modeling of pulse tests that measure both fluidpressure and fracture-normal displacement of the Coaraze Laboratory site,France
In situ fracture mechanical deformation and fluid flowinteractions are investigated through a series of hydraulic pulseinjection tests, using specialized borehole equipment that cansimultaneously measure fluid pressure and fracture displacements. Thetests were conducted in two horizontal boreholes spaced one meter apartvertically and intersecting a near-vertical highly permeable faultlocated within a shallow fractured carbonate rock. The field data wereevaluated by conducting a series of coupled hydromechanical numericalanalyses, using both distinct-element and finite-element modelingtechniques and both two- and three-dimensional model representations thatcan incorporate various complexities in fracture network geometry. Oneunique feature of these pulse injection experiments is that the entiretest cycle, both the initial pressure increase and subsequent pressurefall-off, is carefully monitored and used for the evaluation of the insitu hydromechanical behavior. Field test data are evaluated by plottingfracture normal displacement as a function of fluid pressure, measured atthe same borehole. The resulting normal displacement-versus-pressurecurves show a characteristic loop, in which the paths for loading(pressure increase) and unloading (pressure decrease) are different. Bymatching this characteristic loop behavior, the fracture normal stiffnessand an equivalent stiffness (Young's modulus) of the surrounding rockmass can be back-calculated. Evaluation of the field tests by couplednumerical hydromechanical modeling shows that initial fracture hydraulicaperture and normal stiffness vary by a …
Date:
April 22, 2006
Creator:
Cappa, F.; Guglielmi, Y.; Rutqvist, J.; Tsang, C-F. & Thoraval, A.
Object Type:
Article
System:
The UNT Digital Library
[News Clip: Timeline]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 22, 2006, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Bush energy]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 22, 2006, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Daughter for sale]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 22, 2006, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Alltel free calls]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 22, 2006, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Gas well blows]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 22, 2006, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Gas well blows]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 22, 2006, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Forest Hill]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 22, 2006, 9:00 a.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Bush energy]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 22, 2006, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Blast explosion]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 22, 2006, 9:00 a.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: CIA firing]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 22, 2006, 6:00 a.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Going green office]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 22, 2006, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Forest Hill]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 22, 2006, 9:00 a.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: NOLA ELX]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 22, 2006, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Main st tonight]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 22, 2006, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Bush energy]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 22, 2006, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Main St arts fest]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 22, 2006, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Taco Bell spit]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 22, 2006, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Forest Hill]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 22, 2006, 9:00 a.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Forest Hill]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 22, 2006, 9:00 a.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Well dangers]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 22, 2006, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Gas well blows]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 22, 2006, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: SWAT situation]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 22, 2006, 6:00 a.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: SWAT situation]
Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date:
April 22, 2006, 6:00 a.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library