High expansion non-elastomeric straddle tool

Details High expansion non-elastomeric straddle tool High expansion non-elastomeric straddle tool

E - Fixed Constructions

21

B

E21B 33/124 (2006.01) E21B 33/12 (2006.01) E21B 33/128 (2006.01)

Patent

CA 2454840

The present invention involves a pack-off system for use in packing off an area of interest within a wellbore. The pack-off system comprises at least two packing elements disposed on a tubular body. The packing elements of the present invention comprise overlapping leaves which are pivotally mounted on the tubular body. The present invention further involves a method for using the pack-off system, wherein the packing elements are placed adjacent to an area of interest within a wellbore. The overlapping leaves of the packing elements are extended radially to effectively obstruct fluid flow in the annular space between the outermost portions of the packing elements and the wellbore. The bulk of the fluid introduced into the wellbore is trapped between the packing elements and is thereby forced into the area of interest.

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