3D Geomechanical Modeling of Salt-Creep Behavior on Wellbore Casing for Presalt Reservoirs

Hanyi Wang (1) , Robello Samuel

1 Department of Petroleum and Geosystems Engineering [Austin]

In this study, a 3D geomechanical model is developed, using data such as wellbore pressure and temperature, formation stress and temperature, rock, cement, and casing properties, to predict the effects of salt creep behavior on stress loading in the wellbore casing, which helps to assess the life expectancy of wells in pre-salt reservoirs. In addition, possible methods that can mitigate the severity of salt mobility and reduce the risks of casing collapse are discussed.

Mots clés: Salt creep; Pre-salt reservoir; Wellbore stability; Wellbore casing; Geomechanical modeling; Completion in salt; Creep behavoir

Domaines: Mécanique des matériaux [physics.class-ph]; Physique [physics]; Matériaux et structures en mécanique [physics.class-ph]; Analyse numérique [cs.NA]; Matériaux

Hanyi Wang, Robello Samuel. 3D Geomechanical Modeling of Salt-Creep Behavior on Wellbore Casing for Presalt Reservoirs. SPE Drilling and Completion, 2016, 31 (04), pp.261 - 272. ⟨10.2118/166144-PA⟩. ⟨hal-01626417⟩