An inflatable packing device is provided for use in wellbore containing fluid. The inflatable packing device provides a seal between a conduit carrying the inflatable packing device and an interior surface within the wellbore. A cylindrical housing is provided having a central longitudinal axis, and...http://www.google.es/patents/US5101908?utm_source=gb-gplus-sharePatente US5101908 - Inflatable packing device and method of sealing
