Pub Date : 2020-12-17DOI: 10.1201/9781003078807-93
G. Zimmermann, H. Burkhardt, L. Engelhard
{"title":"Scale dependence of hydraulic and structural parameters in fractured rock","authors":"G. Zimmermann, H. Burkhardt, L. Engelhard","doi":"10.1201/9781003078807-93","DOIUrl":"https://doi.org/10.1201/9781003078807-93","url":null,"abstract":"","PeriodicalId":20376,"journal":{"name":"Poromechanics II","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84792476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-17DOI: 10.1201/9781003078807-56
R. Charlier, F. Collin, C. Schroeder, P. Illing, P. Delage, Yu-Jun Cui, V. D. Gennaro
The compaction of chalky reservoirs during oil extraction and other important problems like the "casing collapse" or the "chalk production" are related to the mechanical properties of chalk. Controlling compaction is very important because reservoir deformations imply seabed subsidence that endangers the offshore stations. The first explanation of subsidence links the compaction to the pore pressure decrease in the reservoir. The solution was the injection of gas and water into the oilfield in order to repressurise the reservoir. But the waterflooding induced additional subsidence. Though many studies have been already performed on chalks, the basis mechanism of the water sensitivity was not defined. Obviously, no satisfactory constitutive law can be written without this deep insight of the phenomenon. This is the scope of the ongoing EC Research Program Pasachalk. The origin of the research is in the comparison of experimental results obtained on Lixhe chalk and on Jossigny silt which showed that the influence of water on pure high porosity chalk is similar to that on partially saturated soils (Delage & al. 1996). Another extensive experimental analysis of the influence of the saturating fluid on Lixhe chalk behaviour concluded that the water-weakening effect might be suction related. Hence the idea appeared to apply the knowledge, the approach, and the tools of the partially saturated soil mechanics to the understanding, description, and modelling of chalk behaviour during changes in saturation fluids, such as when waterflooding. This paper presents the developed constitutive model, which is a cap type plasticity model coupled with the Barcelona one (Alonso & al. 1990) for taking the suction effect into account. The model parameters are calibrated based on the experimental results. The validation of the model is performed on a waterflooding experiment. We show that the model is able to reproduce qualitatively and quantitatively the observed basic phenomena. As viscous effects may be important for the reservoir exploitation time, some first insights in the development of an elastoviscoplastic constitutive model are presented. The idea is to combine the frameworks of the Perzina viscoplasticity and of the preceding developed elastoplastic model.
{"title":"Constitutive modeling of chalk – application to waterflooding","authors":"R. Charlier, F. Collin, C. Schroeder, P. Illing, P. Delage, Yu-Jun Cui, V. D. Gennaro","doi":"10.1201/9781003078807-56","DOIUrl":"https://doi.org/10.1201/9781003078807-56","url":null,"abstract":"The compaction of chalky reservoirs during oil extraction and other important problems like the \"casing collapse\" or the \"chalk production\" are related to the mechanical properties of chalk. Controlling compaction is very important because reservoir deformations imply seabed subsidence that endangers the offshore stations. The first explanation of subsidence links the compaction to the pore pressure decrease in the reservoir. The solution was the injection of gas and water into the oilfield in order to repressurise the reservoir. But the waterflooding induced additional subsidence. Though many studies have been already performed on chalks, the basis mechanism of the water sensitivity was not defined. Obviously, no satisfactory constitutive law can be written without this deep insight of the phenomenon. This is the scope of the ongoing EC Research Program Pasachalk. The origin of the research is in the comparison of experimental results obtained on Lixhe chalk and on Jossigny silt which showed that the influence of water on pure high porosity chalk is similar to that on partially saturated soils (Delage & al. 1996). Another extensive experimental analysis of the influence of the saturating fluid on Lixhe chalk behaviour concluded that the water-weakening effect might be suction related. Hence the idea appeared to apply the knowledge, the approach, and the tools of the partially saturated soil mechanics to the understanding, description, and modelling of chalk behaviour during changes in saturation fluids, such as when waterflooding. This paper presents the developed constitutive model, which is a cap type plasticity model coupled with the Barcelona one (Alonso & al. 1990) for taking the suction effect into account. The model parameters are calibrated based on the experimental results. The validation of the model is performed on a waterflooding experiment. We show that the model is able to reproduce qualitatively and quantitatively the observed basic phenomena. As viscous effects may be important for the reservoir exploitation time, some first insights in the development of an elastoviscoplastic constitutive model are presented. The idea is to combine the frameworks of the Perzina viscoplasticity and of the preceding developed elastoplastic model.","PeriodicalId":20376,"journal":{"name":"Poromechanics II","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73551538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-17DOI: 10.1201/9781003078807-47
J. Rudnicki
This paper is motivated by a recent analysis by Walsh (2002) of subsidence above a planar reser- voir. Although the problem has been treated previously by Geertsma (1966, 1973a, b) and Segall (1992), Walsh (2002) uses a different approach. In particular, he uses a cut and weld procedure, originated by Eshelby (1957), and the reciprocal theorem of elasticity. Walsh obtains the same results as Geertsma and Segall but the connec- tion between the two approaches is not evident. The purpose of this paper is to generalize the approach used by Walsh (2002) and to develop the connection to the approach of Geertsma and Segall.
{"title":"Eshelby transformations, pore pressure and fluid mass changes, and subsidence","authors":"J. Rudnicki","doi":"10.1201/9781003078807-47","DOIUrl":"https://doi.org/10.1201/9781003078807-47","url":null,"abstract":"This paper is motivated by a recent analysis by Walsh (2002) of subsidence above a planar reser- voir. Although the problem has been treated previously by Geertsma (1966, 1973a, b) and Segall (1992), Walsh (2002) uses a different approach. In particular, he uses a cut and weld procedure, originated by Eshelby (1957), and the reciprocal theorem of elasticity. Walsh obtains the same results as Geertsma and Segall but the connec- tion between the two approaches is not evident. The purpose of this paper is to generalize the approach used by Walsh (2002) and to develop the connection to the approach of Geertsma and Segall.","PeriodicalId":20376,"journal":{"name":"Poromechanics II","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80269830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-17DOI: 10.1201/9781003078807-148
J. Shao, Y. F. Lu, W. Xu
{"title":"Micromechanics based macroscopic damage modeling of saturated rocks","authors":"J. Shao, Y. F. Lu, W. Xu","doi":"10.1201/9781003078807-148","DOIUrl":"https://doi.org/10.1201/9781003078807-148","url":null,"abstract":"","PeriodicalId":20376,"journal":{"name":"Poromechanics II","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91324259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-17DOI: 10.1201/9781003078807-37
B. Lecampion, A. Constantinescu
{"title":"Identification of poroelastic constants of deep argillaceous rocks II: inverse analysis","authors":"B. Lecampion, A. Constantinescu","doi":"10.1201/9781003078807-37","DOIUrl":"https://doi.org/10.1201/9781003078807-37","url":null,"abstract":"","PeriodicalId":20376,"journal":{"name":"Poromechanics II","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80340812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-17DOI: 10.1201/9781003078807-111
D. Lafarge
{"title":"Determination of the dynamic bulk modulus of gases saturating porous media by Brownian motion simulation","authors":"D. Lafarge","doi":"10.1201/9781003078807-111","DOIUrl":"https://doi.org/10.1201/9781003078807-111","url":null,"abstract":"","PeriodicalId":20376,"journal":{"name":"Poromechanics II","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77791480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-17DOI: 10.1201/9781003078807-147
A. Selvadurai, A. Shirazi
{"title":"Pressure decay in a fluid inclusion located in a damage-sensitive poroelastic solid","authors":"A. Selvadurai, A. Shirazi","doi":"10.1201/9781003078807-147","DOIUrl":"https://doi.org/10.1201/9781003078807-147","url":null,"abstract":"","PeriodicalId":20376,"journal":{"name":"Poromechanics II","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86664401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-17DOI: 10.3997/2214-4609-pdb.5.p244
A. Hanyga
{"title":"A calculus for memory effects in dynamics of porous media","authors":"A. Hanyga","doi":"10.3997/2214-4609-pdb.5.p244","DOIUrl":"https://doi.org/10.3997/2214-4609-pdb.5.p244","url":null,"abstract":"","PeriodicalId":20376,"journal":{"name":"Poromechanics II","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90538232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jmrj Jacques Huyghe, R Loonvan, Fpt Frank Baaijens, Kemenade van Pm, T. Smit
The paper illustrates numerous biomedical applications in which porous media mechanics is needed to unravel the mechanics of biological design and function.
本文阐述了许多生物医学应用，其中需要多孔介质力学来揭示生物设计和功能的力学。
{"title":"We all are porous media","authors":"Jmrj Jacques Huyghe, R Loonvan, Fpt Frank Baaijens, Kemenade van Pm, T. Smit","doi":"10.1201/9781003078807-3","DOIUrl":"https://doi.org/10.1201/9781003078807-3","url":null,"abstract":"The paper illustrates numerous biomedical applications in which porous media mechanics is needed to unravel the mechanics of biological design and function.","PeriodicalId":20376,"journal":{"name":"Poromechanics II","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79228745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-17DOI: 10.1201/9781003078807-83
V. Richefeu, M. E. Youssoufi, J. Benet
This paper deals with an experimental and theoretical study of a porous medium strain during the transfers of a solution, which is composed of one solvent and only one solute. The porous medium is immersed into the same solution at different concentration. Resulting from concentration gradients, solvent and solute fluxes are created in opposite directions. Under some conditions relatives, for example, to the skeleton texture or to the solute molecule size, this mass transport can generate strains. We present a thermoporoelastic model taking into account the solvent / solute transport and the stresses / strains in a saturated porous medium. The porous medium is assumed to be isotropic, elastic and saturated with an ideal solution. We pay particular attention to the determination of the various parameters of the model. In the isothermal case, we give analytical relations that express the three most specific coefficients of this study.
{"title":"Saturated porous medium strain under osmotic actions","authors":"V. Richefeu, M. E. Youssoufi, J. Benet","doi":"10.1201/9781003078807-83","DOIUrl":"https://doi.org/10.1201/9781003078807-83","url":null,"abstract":"This paper deals with an experimental and theoretical study of a porous medium strain during the transfers of a solution, which is composed of one solvent and only one solute. The porous medium is immersed into the same solution at different concentration. Resulting from concentration gradients, solvent and solute fluxes are created in opposite directions. Under some conditions relatives, for example, to the skeleton texture or to the solute molecule size, this mass transport can generate strains. We present a thermoporoelastic model taking into account the solvent / solute transport and the stresses / strains in a saturated porous medium. The porous medium is assumed to be isotropic, elastic and saturated with an ideal solution. We pay particular attention to the determination of the various parameters of the model. In the isothermal case, we give analytical relations that express the three most specific coefficients of this study.","PeriodicalId":20376,"journal":{"name":"Poromechanics II","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75923727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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