Interpretation of dilatometer tests in a heavy oil reservoir |
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| Authors: | Christophe Dano Pierre‐Yves Hicher Damien Rangeard Philippe Marchina |
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| Affiliation: | 1. Research Institute in Civil and Mechanical Engineering, Ecole Centrale Nantes – University of Nantes – CNRS, 1 rue de la No?, BP 92101, 44321 Nantes cedex 3, France;2. Associate Professor.Research Institute in Civil and Mechanical Engineering, Ecole Centrale Nantes – University of Nantes – CNRS, 1 rue de la No?, BP 92101, 44321 Nantes cedex 3, France;3. Professor.;4. Laboratoire de Génie Civil et Génie Mécanique, Institut National des Sciences Appliquées de Rennes, 20 avenue des Buttes de Co?smes, 35043 Rennes cedex, France;5. Associate Professor.;6. Total E&P, Centre Scientifique et Technique Jean Feger, avenue Larribau, 64018 Pau, France;7. R&D Engineer. |
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| Abstract: | This paper presents a prospective study for identifying selected parameters of the modified Cam‐Clay model representing the behaviour of heavy oil reservoirs. The first part shows that the plastic compressibility, which controls the main recovery mechanism of such reservoirs, can be accurately determined, simultaneously with other parameters, by an inverse analysis of pressure–strain curves. The conditions of the identification procedure mainly involve two tests conducted under different drainage conditions or at different strain rates. The numerical study also establishes the sequence of an original in situ experimental program, in which three dilatometer tests at a relatively great depth (several hundreds of metres) were carried out. The comparison of the experimental data with the numerical computations reveals a significant over‐consolidation ratio which does not allow the plastic compressibility to be determined but supports the findings regarding the geological erosion of the site. Copyright © 2006 John Wiley & Sons, Ltd. |
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| Keywords: | dilatometer identification compressibility petroleum |
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