Patent ID: 8096356

Claim:
A method, comprising: locating a completion assembly downhole in a wellbore and setting the completion assembly with at least one packer to selectively isolate a well zone; using a conveyance to position a service tool assembly in the set completion assembly in a gravel pack position for performing a gravel pack treatment on the isolated well zone, wherein a releasable anchor is positioned proximate an upper region of the service tool assembly; after positioning the service tool assembly in the set completion assembly, setting the releasable anchor from a disengaged position into an engaged position when the service tool assembly is in the gravel pack position, wherein the releasable anchor is expanded to engage a wellbore wall so that forces are absorbed by the releasable anchor; operating the service tool assembly in the gravel pack position with the releasable anchor in the engaged position to perform a gravel pack treatment on the isolated well zone; and disengaging the releasable anchor after the gravel pack treatment on the isolated well zone and withdrawing the service tool assembly and releasable anchor from the wellbore.