Chemical Bypass for a Packer in a Wellstring

Abstract

A packer assembly for a production well is described. The packer assembly includes one or more packer elements set to engage and seal the inner surface of a well casing, where a production tube runs through the one or more packer elements and provides a fluid path to the surface. A chemical inlet above the one or more packer elements connects to a chemical flow path through the one or more packer elements and a chemical outlet below the packer assembly.

What is claimed is: 
     
         1 . A packer assembly for a production well comprising:
 one or more packer elements set to engage and seal the inner surface of a well casing;   a production tube running through the one or more packer elements and providing a fluid path to the surface;   a chemical inlet above the one or more packer elements;   a chemical flow path through the one or more packer elements; and   a chemical outlet below the packer assembly.   
     
     
         2 . The packer assembly of  claim 1  wherein the chemical inlet is connected to a chemical line bringing a chemical from a surface supply by an input connector. 
     
     
         3 . The packer assembly of  claim 1  wherein the packer assembly comprises a cup packer. 
     
     
         4 . The packer assembly of  claim 1  wherein the packer assembly comprises a tension packer. 
     
     
         5 . The packer assembly of  claim 2  wherein the chemical comprises one or more of a defoamer, a demulisfier, diesel, a coolant. 
     
     
         6 . The packer assembly of  claim 1  wherein the chemical flow path comprises a bypass line running through an interior of the production tube. 
     
     
         7 . The packer assembly of  claim 1  wherein the chemical flow path comprises a bypass line running through an exterior of the production tube. 
     
     
         8 . The packer assembly of  claim 1  wherein the chemical flow path comprises a bypass line integral to a wall of the production tube. 
     
     
         9 . A chemical bypass for a packer assembly in a production well, the chemical bypass comprising:
 an input port having an input connector to connect to a chemical line running from chemical source;   a bypass line connected to the input port, the bypass line providing a chemical flow path through the packer assembly, the packer assembly sealing a well casing in the production well.   an output port connected to the bypass line, the output port connecting to the chemical line below the packer assembly through an output connector.   
     
     
         10 . The chemical bypass of  claim 9  wherein a production tube runs through the packer assembly and provides a fluid path for a well fluid. 
     
     
         11 . The packer assembly of  claim 9  wherein the packer assembly comprises a cup packer. 
     
     
         12 . The packer assembly of  claim 9  wherein the packer assembly comprises a tension packer. 
     
     
         13 . The packer assembly of  claim 9  wherein the chemical line carries a chemical, the chemical including one or more of a defoamer, a demulisfier, diesel, a coolant. 
     
     
         14 . The packer assembly of  claim 10  wherein the bypass line runs through an interior of the production tube. 
     
     
         15 . The packer assembly of  claim 10  wherein the bypass line runs through an exterior of the production tube. 
     
     
         16 . The packer assembly of  claim 10  wherein the bypass line is integral to a wall of the production tube.