01642nmc a2200205 4500 20260520005607.0 260224s2001 xxu ing Inglés Modeling Aspects of Wellbore Stability in Shales SPE 69529 Dallas, Texas Society of Petroleum Engineers 2001 12/09/06 ; 17/07/01 Drilling problems associated with wellbore instability are normally aggravated when crossing shale layers. Instabilities in shales may be caused by a complex mechanism of shale-drilling fluid interaction and by the overstress of the rock formation. Wellbore stability models that include some aspects of this coupled phenomenon have already been developed. However, the use of these models without the knowledge of the associated simplifications may lead to wrong conclusions. The present paper discusses the modeling aspects of the coupled process. Three formulations are compared: an analytical elastic solution without the diffusion process, an analytical poroelastic solution and a numerical chemical-hydro- mechanical model. The objective is to analyze the applicability of each model. CONGTP Frydman, M. 6210 Latin American and Caribbean Petroleum Engineering Conference (7th : 2001 mar. 25-28 : Buenos Aires, Argentina) 5738 Latin American and Caribbean Petroleum Engineering Conference (7th : 2001 mar. 25-28 : Buenos Aires, Argentina) 5738 Frydman, M. 6210 131037 131037 https://biblioteca.iapg.org.ar/ArchivosAdjuntos/LACPEC2001/Spe69529.pdf 0 0 0 0 201959 BVIAPG BVIAPG 2026-03-03 200003097 0 200003097 2026-03-03 01:41:10 2026-03-03 ARCHIVO