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Keywords: concentration
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Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-502
... this operation requires careful design of the fracture growth, there are few controllable factors, and those that are controllable are also restricted by operation margins. A numerical study using a solid transport model in the fracture shows that the solid concentration of the injected cuttings slurry...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-492
... 1. INTRODUCTION Literature Review. Before presenting the proposed model, the authors would like to focus on the previous models which have been studied mainly in recent years, with concentration on well-bore stability in shaly formations. Our proposed model will also be explained in more detail...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-581
... reservoir geomechanics external stress specimen concentration experiment elliptical breakout Upstream Oil & Gas hole failure higher external stress stability breakout depth Reservoir Characterization circular hole sandstone hollow cylinder geometry breakout breakout tip...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0261
...: Mesh used to analyze the junction sta- bility. 3 2D ANALYTICAL APPROACH The first solution concerns the streSs concentration in all infinite containing two circular holes of equal diame- with varying distance >"R, as defined in Fig- ure2. The second solution (Ling, 1948b) deals with the stress...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0777
... of the porous media. More specifically, the solute migration may be channeled through macropore regions while intermingling micropores act as containers to either store or replenish the passing contaminant depending upon the relative concentration difference between the macropores and micropores (Bai et al...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0239
... reservoir geomechanics Wellbore Design concentration intramatrix pore diffusion gradient repulsive-attractive force intramatrix Pacific Rocks 2000, Girard, Liebman, Breeds & Doe (eds) © 2000 Balkema, Rotterdam, ISBN 90 5809 1554 Swelling and softening behaviour of clay shale around a drilled hole...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1081
... and the simulation results are in qualitative agreement with the results of similar experiments by other researchers. A parametric study was carried out to demonstrate the effects of salt concentration of the drilling fluid and reflection coefficient of the shale on the variation of pore pressure in the formation...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1429
... the transport of contaminants mainly occurs in a small volume of high-permeability interconnected fractures. However, most of the capacity for storing a pollutant is provided by the pore system of the rock matrix. Due to the much slower transport in the matrix, strong concentration gradients may occur from...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1285
... of instabilities can occur near the borehole wall due to in situ stress concentration (Figure 1). Elongation of the instabilities are, in most cases, aligned perpendicular to the minimum principal stress. The petroleum industry experiences financial losses because of borehole breakouts caused by a particular type...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1407
.... hydraulic fracturing aperture novakowski borehole Artificial Intelligence tracer experiment Simulation plume Upstream Oil & Gas concentration single fracture complex reservoir fracture aperture deviation solute transport correlation length constant aperture interpretation gradient...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1635
... Abstract: This paper describes a new experimental technique developed to study the gas diffusion properties of coal using the transient method. It enables measurement of the diffusion coefficient, D, and estimate the variation in its value with changes in pressure and concentration...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1413
... of the arrangement of the interstitial network on the transport process. The porosity was altered at a given fracture density to determine the relative effect of matrix diffusion. The results were determined using breakthrough concentration calculated at the down-gradient end of the major fracture. An instantaneous...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1495
... and measured brine release. A summary concludes the work. concentration damage level Upstream Oil & Gas brine concentration hydraulic fracturing calculation creep Brine prediction closure constitutive model accumulation excavation Munson brine release deformation microfracture...
Proceedings Papers

Paper presented at the 1st North American Rock Mechanics Symposium, June 1–3, 1994
Paper Number: ARMA-1994-1041
... roof fall monitoring roof beam concentration roof fall spdv room 2 convergence rate Rock Mechanics, Nelson & Laubach (eds) © 1994 Salkema, Rotterdam, ISBN 90 54103808 Roof fall monitoring and prediction at the Waste Isolation Pilot Plant Christopher T. Francke & Stanley 1. Patchet Waste...

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