초록 ▼

An expandable packer or anchor is disclosed. It features a gripping device integral to or mounted in a sleeve over the mandrel. Upon expansion, a sealing element engages an outer tubular and the gripping device, such as wickers on slips, preferably digs into the outer tubular. The expansion is pref

An expandable packer or anchor is disclosed. It features a gripping device integral to or mounted in a sleeve over the mandrel. Upon expansion, a sealing element engages an outer tubular and the gripping device, such as wickers on slips, preferably digs into the outer tubular. The expansion is preferably by pressure and can incorporate pressure intensifiers delivered by slick line or wire line. Release is accomplished by a release tool, which is delivered on slick line or wire line. It stretches the anchor or packer longitudinally, getting it to retract radially, for release. The release tool can be combined with packers or anchors that have a thin walled feature in the mandrel, to release by pulling the mandrel apart.

대표청구항 ▼

We claim: 1. A method of running a non-resilient first tubular as part of an assembly in a wellbore said tubular having an innermost wall defining a passage extending radially from at or near a central axis to said innermost wall and an initial outer dimension, said wellbore comprising an open hole

We claim: 1. A method of running a non-resilient first tubular as part of an assembly in a wellbore said tubular having an innermost wall defining a passage extending radially from at or near a central axis to said innermost wall and an initial outer dimension, said wellbore comprising an open hole or cased hole, comprising: inserting the first tubular into the wellbore without reducing its initial outer dimension to make it fit; expanding said first tubular by increasing the size of said passage after locating it in the wellbore for support thereof; removing said first tubular. 2. The method of claim 1, wherein: using one of a screen, a liner, a packer, and an anchor as said assembly. 3. A method of running a first tubular in a wellbore said tubular having an innermost wall defining a passage extending radially from at or near a central axis to said innermost wall and an initial outer dimension, said wellbore comprising an open hole or cased hole, comprising: inserting the first tubular into the wellbore without reducing its initial outer dimension to make it fit; expanding said first tubular by increasing the size of said passage after locating it in the wellbore for support thereof; removing said first tubular; longitudinally extending said first tubular to retract it from the wellbore. 4. The method of claim 3, wherein: said first tubular is expanded or retracted multiple times downhole. 5. A method of running a first tubular in a wellbore said tubular having a wall defining a passage and an initial outer dimension, said wellbore comprising an open hole or cased hole, comprising: inserting the first tubular into the wellbore without reducing its initial outer dimension to make it fit; expanding said first tubular by increasing the size of said passage after locating it in the wellbore for support thereof; removing said first tubular; longitudinally extending said first tubular to retract it from the wellbore; inserting a telescoping tool into said first tubular in a location where said first tubular is in contact with the wellbore; gripping said first tubular in two places; extending said telescoping tool.