000004852 001__ 4852
000004852 005__ 20141119144559.0
000004852 04107 $$aeng
000004852 046__ $$k2002-06-02
000004852 100__ $$aDiek, Adel
000004852 24500 $$aANISOTROPIC CHEMO-POROELASTICITY WITH ION TRANSFER

000004852 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004852 260__ $$bColumbia University in the City of New York
000004852 506__ $$arestricted
000004852 520__ $$2eng$$aThis paper presents a linear chemo-poroelastic model for predicting shale deformation in transversely isotropic media. The theory incorporates the stresses and pore pressure with four coupled transport processes of ‡uid and solute: hydraulic conduction, chemical osmosis, chemical solute di¤usion, and pressure solute di¤usion. The ‡uid is considered compressible and consisting of a binary electrolyte solution (solute and diluent). The total stresses and variation of ‡uid content are linearly related to the strains, pore pressure, and solute mass fraction through anisotropic material coe¢cients. The …eld equations are constructed for solid displacements, pore pressure, and solute mass fraction by implementing the rock constitutive relations and transport equations into the momentum and ‡uid and solute mass balance equations. The resulting Navier-type equations couple the elastic strains to the pore pressure and the solute mass fraction. The other …eld equations express the couplings of the ‡uid and solute di¤usions with the elastic strains. To show the impact of the physico-chemical processes on the pore pressure and stress …elds around a wellbore, an example of a vertical well drilled in an isotropic shale formation is presented. Results indicate that although the osmotically-induced reduction in the pore pressure tends to stabilize the borehole, ion di¤usion into the formation can cause the formation to fail in tension. 

000004852 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004852 653__ $$aChemo-poroelasticity, physico-chemical processes, chemical osmosis, ion di¤usion, ‡uid-shale interactions, transversely isotropic media.

000004852 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004852 720__ $$aDiek, Adel$$ia, Not$$iGhassemi, Ahmad
000004852 8560_ $$ffischerc@itam.cas.cz
000004852 8564_ $$s180919$$uhttp://invenio.itam.cas.cz/record/4852/files/434.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004852 962__ $$r4594
000004852 980__ $$aPAPER