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Keywords: pressurization
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Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0881
... pressurization with dilatometer inflation. In this paper, we describe the concept for detection of the reopening pressure from the circumferential deformation of borehole and results of the laboratory tests using the new tool. 2 CIRCUMFERENTIAL BOREHOLE DEFORMATION AND STATE OF STRESS A two dimensional problem...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-1185
... pressurization specimen porous sandstone Haimson shut-in pressure fracture situ stress pressurization rate Upstream Oil & Gas criteria sandstone breakdown pressure hydraulic fracture Pacific Rocks2000, Girard, Liebman, Breeds & Doe (eds)O 2000 Balkema, Rotterdam, ISBN905809 1554 Hydraulic...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1105
... ABSTRACT: This paper presents the use of two-dimensional models to analyze the behaviour of a pre-existing fracture intersecting a pressurized wellbore. The fracture has an arbitrary location and inclination with respect to the wellbore and the far-field state of stress and it is assumed that...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1279
... changes during pressurization in two perpendicular directions. During borehole pressurization under anisotropic far-field stresses diametral increase at right angles to the future hydrofrac helped isolate two critical pressures, one at which fracture initiated (well before breakdown) and one at which...
Proceedings Papers

Paper presented at the 1st North American Rock Mechanics Symposium, June 1–3, 1994
Paper Number: ARMA-1994-0157
... travel time of the guided wave increased corresponding to pressurization of fracture. This phenomenon cannot be explained by the simple parallel wall fracture model. Observed velocity decrease is thought to be caused by effects of actual properties of the subsurface fracture; contact of asperities of the...

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