Upper critical fields well above 100 T for the superconductor<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mtext>SmFeAsO</mml:mtext></mml:mrow><mml:mrow><mml:mn>0.85</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mtext>F</mml:mtext><mml:mrow><mml:mn>0.15</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>with<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mi>T</mml:mi><mml:mi>c</mml:mi></mml:msub><mml:mo>=</mml:mo><mml:mn>46</mml:mn><mml:mtext> </mml:mtext><mml:mtext>K</mml:mtext></mml:mrow></mml:math>

We report specific-heat measurements at magnetic fields up to 20 T on the recently discovered superconductor ${\text{SmFeAsO}}_{0.85}{\text{F}}_{0.15}$. The $B\text{\ensuremath{-}}T$ diagram of a polycrystalline ${\text{SmFeAsO}}_{0.85}{\text{F}}_{0.15}$ sample with ${T}_{c}=46\text{ }\text{K}$ was investigated. The temperature dependence of ${B}_{c2}$ was extracted from the specific-heat curves; the corresponding ${B}_{c2}(T=0)$ value derived from the Werthamer-Helfand-Hohenberg formula being 150 T. Based on magnetization measurements up to 9 T, a first estimation of the field dependence of the inductive critical current ${J}_{c}$ is given. Evidence for granularity is found. The presence of a peak effect is reported, suggesting a crossover in the vortex dynamics, in analogy to the behavior observed in high ${T}_{c}$ cuprates.