PACKER APPARATUS WITH ANNULAR CHECK VALVE

摘要

A well packer assembly with an annular fluid bypass and a check valve. The well packer assembly has an upper packer apparatus and a lower packer apparatus with a stimulation port therebetween. An annular fluid bypass in the upper packer apparatus communicates the well annulus from above packer elements on the upper packer apparatus to .below the packer elements. The well fluid circulated through the fluid bypa ss is discharged into the well annulus below the packer elements on the upper packer apparatu s to circulate stimulation fluid through the stimulation port and upwardly through the uppe r packer apparatus and the tubing used to lower the upper packer apparatus into the well.