Mechanical performance of bentonite plugs in abandonment operations of petroleum wells
Laura Rafaela Cavalcanti de Oliveira,
Mário César de Siqueira Lima,
Waleska Rodrigues Pontes da Costa
et al.
Abstract:This study aims to evaluate how the operational procedure adopted for the pellets placement and the exposure to subsurface conditions influences the mechanical integrity of bentonite plugs used as barrier elements in the abandonment of petroleum wells. To this end, two methodologies were used to obtain the plugs: from the first methodology, the pellets were immersed in diesel or olefin, which are proposed as displacement fluids in offshore operations, and then, hydrated in deionized water; in the second method… Show more
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