US2003051871A1PendingUtilityA1

Plastic packer

20
Priority: Sep 17, 2001Filed: Sep 17, 2001Published: Mar 20, 2003
Est. expirySep 17, 2021(expired)· nominal 20-yr term from priority
Inventors:Richard Swineford
E21B 33/12
20
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

This invention is a packer that is a short pipe designed fit over a well pipe. The bottom of the pipe flares outward to provide a seal between the packer and the adjacent strata of earth or well casing. An annular ring is placed at the top of the flared section to create a more secure seal between the packer and the well casing. The packer is made of plastic and can be cast in a single step process. The packer is designed to easily attach to a well pipe in that the inside of the top of the packer that fits over the well pipe has numerous knurls running parallel to each other and along the pipe. These trenches are designed to allow glue to flow down between the well pipe and the packer to ensure attachment of the packer to the well pipe.

Claims

exact text as granted — not AI-modified
What is claimed is as follows:  
     
         1 . A packer for a water well which attaches near the end of a well pipe and said well pipe has an outer diameter comprising: 
 a. a piece which is cylindrical with two ends and an inside and an outside adapted to allow liquids to flow through it and said piece has a diameter and a inter diameter and said inter diameter is approximately the same as the outer diameter of the well pipe; and,    b. a flared piece with a top and bottom said bottom of the flared piece is integrally attached to the piece and the bottom of the flared piece diameter is the same as the piece's diameter and said bottom of the flared piece has an outer diameter; and,    c. a means for stopping liquids from flowing between the outside of the packer and an adjacent strata or well casing; and    d. the packer is made of a single material; and    e. the packer is attached to the well pipe by gluing.    
     
     
         2 . A packer as in  claim 1  wherein: 
 a. the single material is plastic.  
 
     
     
         3 . A packer as in  claim 1  wherein: 
 a. the means for stopping liquids from flowing between the outside of the packer and an adjacent strata or well casing is an annular ring integrally attached to the top of the flared piece and said annular ring's inter diameter is the same as the flared piece outer diameter and the outer diameter of the annular ring is of sufficient size that when the packer is attached to the well pipe and placed in the well that the annular ring makes contact with the well casing or the adjacent strata and stops the flow of liquids between the packer and the well casing or the adjacent strata.  
 
     
     
         4 . A packer as in  claim 2  wherein: 
 a. a. the means for stopping liquids from flowing between the outside of the packer and an adjacent strata or well casing is an annular ring integrally attached to the top of the flared piece and said annular ring's inter diameter is the same as the flared piece outer diameter and the outer diameter of the annular ring is of sufficient size that when the packer is attached to the well pipe and placed in the well that the annular ring makes contact with the well casing or the adjacent strata and stops the flow of liquids between the packer and the well casing or the adjacent strata.  
 
     
     
         5 . A packer as in  claim 1  further comprising: 
 a. a set of knurls running around the inside circumference of the piece and said knurls are parallel to each other and run lengthwise along the piece.  
 
     
     
         6 . A packer as in  claim 5  wherein: 
 a. the knurls on the inside of the cylindrical piece do not run fully to the bottom of the cylindrical piece forming a small area without knurls.  
 
     
     
         7 . A packer as in  claim 6  wherein: 
 a. the knurls are design such that when the packer is attached to the well pipe glue can be distributed above the top of the cylindrical piece and when the packer is pulled over the glue, the glue is forced into the knurls and the area which the knurls do not extend within keeps the glue from seeping out the bottom of the packer and makes for a more secure attachment of the packer to the well pipe when the glue dries.  
 
     
     
         8 . A packer as in  claim 2  further comprising: 
 a. a set of knurls running around the inside circumference of the piece and said knurls are parallel to each other and run lengthwise along the piece.  
 
     
     
         9 . A packer as in  claim 8  wherein: 
 a. the knurls on the inside of the cylindrical piece do not run fully to the bottom of the cylindrical piece forming a small area without knurls.  
 
     
     
         10 . A packer as in  claim 9  wherein: 
 a. the knurls are design such that when the packer is attached to the well pipe glue can be distributed around the well pipe and when the packer is pulled down the well pipe over the glue, the glue is force into the knurls and the area which the knurls do not extend within keeps the glue from seeping out the bottom of the packer and makes for a more secure attachment of the packer to the well pipe when the glue dries.  
 
     
     
         11 . A packer as in  claim 4  further comprising: 
 a. a set of knurls running around the inside circumference of the piece and said knurls are parallel to each other and run lengthwise along the piece.  
 
     
     
         12 . A packer as in  claim 11  wherein: 
 a. the knurls on the inside of the cylindrical piece do not run fully to the bottom of the cylindrical piece forming a small area without knurls.  
 
     
     
         13 . A packer as in  claim 12  wherein: 
 a. the knurls are design such that when the packer is attached to the well pipe glue can be distributed around the well pipe and when the packer is pulled down the well pipe over the glue, the glue is force into the knurls and the area which the knurls do not extend within keeps the glue from seeping out the bottom of the packer and makes for a more secure attachment of the packer to the well pipe when the glue dries.  
 
     
     
         14 . A packer as in  claim 5  wherein: 
 a. the knurls on the inside of the cylindrical piece do not run fully to the bottom of the cylindrical piece.  
 
     
     
         15 . A packer as in  claim 14  wherein: 
 a. the knurls on the inside of the cylindrical piece do not run fully to the bottom of the cylindrical piece forming a small area without knurls.  
 
     
     
         16 . A packer as in  claim 15  wherein: 
 a. the knurls are design such that when the packer is attached to the well pipe glue can be distributed around the well pipe and when the packer is pulled down the well pipe over the glue, the glue is force into the knurls and the area which the knurls do not extend within keeps the glue from seeping out the bottom of the packer and makes for a more secure attachment of the packer to the well pipe when the glue dries.  
 
     
     
         17 . A packer as in  claim 2  wherein: 
 a. the single material is polyvinyl chloride.  
 
     
     
         18 . A packer as in  claim 1  prepared by a process comprising: 
 a. molding or casting the packer.  
 
     
     
         19 . A packer as in  claim 2  prepared by a process comprising: 
 a. molding or casting the packer.  
 
     
     
         20 . A packer as in  claim 4  prepared by a process comprising: 
 a. molding or casting the packer.

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