documentclass{article}
usepackage{wrapfig}
setlength{parskip}{8ex}
setlength{unitlength}{1cm}
begin{document}
hrulefill

hrulefill

begin{wrapfigure}{r}{0.5textwidth}
  begin{center}
    framebox(5,5)[c]{some picture}
  end{center}
end{wrapfigure}
hrulefill

hrulefill

hrulefill

hrulefill

hrulefill

hrulefill

hrulefill

hrulefill
end{document}