  Although generalized Chaplygin phantom models do not show any big rip
singularities, we investigated k-essence models together with noncanonical
kinetic energy for which there might be a big rip future singularity in the
phantom region. We present our results by finely tuning the parameter ($\beta$)
which is closely related to the canonical kinetic term in $k$-essence
formalism. The scale factor $a(t)$ could be negative and decreasing within a
specific range of $\beta$ during the initial evolutional period. There will be
no singularity for the scale factor for all times once $\beta$ is carefully
selected.
