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Keywords: wellbore
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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-04-494
... ABSTRACT: This paper presents a fully coupled reservoir-geomechanics model with erosion mechanics to address wellbore instability phenomena associated with sand production within the framework of mixture theory. A Representative Elementary Volume (REV) is chosen to comprise of five phases...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-464
.... For peak loads between 75% and 87% of the base hole collapse strength, the samples do not fail within 100 cycles, but they are weakened. These findings are applied to injection well design using a coupled 3D non-linear finite element model that includes the wellbore, casing, cement and perforations...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-457
...1. INTRODUCTION Wellbore stability analysis has been the subject of study and discussion for a long time. The integrity of the wellbore plays an important role in many well operations during drilling, completion, and production. Problems involving wellbore stability occur principally through...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-504
...1. INTRODUCTION Sand production is a natural consequence of fluid flow into a wellbore from the reservoir [1]. The process may be divided into the following stages the loss of mechanical integrity of the rocks surrounding an openhole or perforation (failure), separation of solid particles from...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-459
... closure in-situ principal stress assumption in-situ stress measurement hydraulic fracture wellbore 1 ARMA/NARMS 04-459 On the Accuracy of In-situ Stress Measurements by Hydraulic Fracturing A. Ali Daneshy Daneshy Consultants Int l, Houston Texas Copyright 2004, ARMA, American Rock Mechanics...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-505
... saturation Fluid Dynamics calculation relative permeability rock strength wellbore 1. INTRODUCTION It is estimated that, on average, companies produce three barrels of water for each barrel of oil [1], seventy percent of which comes from weakly consolidated or unconsolidated sandstone. The intrusion...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-612
... breakdown propellant fracture propagation stress intensity factor hydraulic fracturing propellant burning modeling wellbore breakdown fracture initiation pressure buildup wellbore Upstream Oil & Gas stimulation bubble expansion propellant gas fracture pressurisation rate...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0247
...Pacific Rocks 2000, Girard, Liebman, Breeds & Doe (eds) © 2000 Balkema, Rotterdam, ISBN 90 5809 1554 Effect of initial pore pressure distribution on deformations around wellbores in shales X.Chen & C. P.Tan CSIRO Petroleum, Glen Waverle)! Vic., Australia C. M. Haberfield Department o/Civil...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0261
...Pacific Rocks 2000, Girard, Liebman, Breeds & Doe (eds) © 2000 Balkema, Rotterdam, ISBN 905809 155 4 2D and 3D elastic and poroelastic stress analyses for multilateral wellbore junctions H.Bargui Rock Mechanics Institute, The University o/Oklahoma, Norman, Okla., USA Y.Abousleiman Rock Mechanics...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1903
... of pore fluid pressure gradients around the wellbore during "blowdown", following high pressure air injection, or in some cases pressure buildup by natural accumulation of methane. Sudden release of pressure from the wellhead during blowdown may induce the coal to cavitate into the wellbore. Repeated...
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...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1081
... ABSTRACT: This paper describes a computer model which simulates the movement of fluid between the wellbore and shale formation due to their chemical potential difference, and the associated time-dependent pore pressure change as the drilling fluid interacts with the shale. The coupled process...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1089
... effectively connects the wellbore to the reservoir. In the current work, the cavitation mechanisms have been addressed through numerical modeling, field data evaluation, and laboratory experimentation. Analyses have shown that a plastic failure zone, with a radius limited to 50 ft, is induced beyond...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1251
... transition from transverse fractures to axial fractures with increasing pressurisation rate and minimum stress along the wellbore. 1. Introduction Understanding hydraulic fracture initiation is important both for optimising the communication of fractures with the borehole in well stimulation...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1127
... ABSTRACT: In - plane and anti - plane investigations of the hydraulic fracture propagation from a cased and cemented wellbore, have been pursued in this communication. The problem has been reduced to the solution of a system of integral equations and a propagation criterion of maximum tensile...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1059
...-down, the model predicts following changes in the formation. Three distinctive zones are formed around the wellbore: a physical cavity; a tensile and/or shear failure zone with enhanced permeability due to stress relief and material failure; and an elastic zone extending beyond the failure zone which...
Proceedings Papers

Paper presented at the 1st North American Rock Mechanics Symposium, June 1–3, 1994
Paper Number: ARMA-1994-0393
... patterns for EOR floods are designed. In-situ stress direction is especially important in the drilling of horizontal wells in order to determine the optimum direction of the wellbore with respect to well bore stability and intersection of the wellbore with hydraulic and natural fractures. Reliable, cost...

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