Sucker rod fishing tool

Abstract

A fishing tool for fishing sucker rods from a subterranean well. A body of the tool is a machined top piece, a machined barrel piece and normally a machined bottom piece that all thread together. The bottom piece preferably retains a curved cast metal slip movable within grooves milled internally into the body. The slip moves upward to admit a rod into the tool and moves downward to capturing the rod in the tool. A lower end of a side opening provided in the barrel piece is level with an upper shoulder of the slip when the slip is at its lowest position so that the rod engages and is retained by both in the tool. The upper shoulder of the slip can optionally be provided with teeth. The bottom piece can be replaced with a bell and the top piece 16 can be replaced by a prior art fishing tool.

1 . A sucker rod fishing tool for fishing sucker rod out of a well comprising:
 a top piece, said top piece provided with threads on its top end for threadable engagement with a means for moving the top piece into and out of a well,   a hollow barrel piece, said barrel piece provided with threads on its top end for threadable engagement with threads provided on a bottom end of said top piece, said barrel piece provided with a side opening,   a curved slip slidably captured within said hollow barrel piece so that said slip can move longitudinally within the barrel piece, and   a bottom end of the side opening in the barrel piece being level with a top shoulder provided on the slip when the slip is located at its lowest position in the barrel piece so that an object being lifted by the tool will engage the top shoulder of the slip and the bottom end of the side opening in the barrel piece resulting in a downwardly exerted pulling force on the tool.   
   
   
       2 . (canceled) 
   
   
       3 . A sucker rod fishing tool for fishing sucker rod out of a well according to  claim 1  further comprising:
 said barrel piece provided with at least two parallel grooves milled into its interior wall; ears provided on said slip: said ears slidably retained within the parallel grooves as a means of movably retaining the slip within the barrel piece.   
   
   
       4 . A sucker rod fishing tool for fishing sucker rod out of a well according to  claim 3  wherein said grooves and said ears on the slip are both provided with a rounded radius to reduce stress on the barrel piece. 
   
   
       5 . A sucker rod fishing tool for fishing sucker rod out of a well according to  claim 1  further comprising:
 said top piece provided with a channel therethrough for allowing liquids to pass through the top piece as the top piece is moved into and out of a well.   
   
   
       6 . A sucker rod fishing tool for fishing sucker rod out of a well according to  claim 1  further comprising:
 a bottom end of said barrel piece provided with an internal bevel to aid in admitting a sucker rod into the barrel piece, and a weld provided at a bottom end of the grooves to retain the slip therein.   
   
   
       7 . A sucker rod fishing tool for fishing sucker rod out of a well according to  claim 1  further comprising:
 a bell removably attached to the bottom end of said barrel piece via, threads on its top end that threadably engage threads provided on a bottom end of said barrel piece, and said a bottom end of said bell provided with an internal bevel to aid in admitting a sucker rod into the barrel piece.   
   
   
       8 . A sucker rod fishing tool for fishing sucker rod out of a well according to  claim 1  further comprising:
 a bottom edge of the slip provided with a bevel on its internal face, said bevel having a half moon configuration to provide for smooth engagement of the slip with a sucker rod as the rod enters the barrel piece and pushes the slip upward.   
   
   
       9 . A sucker rod fishing tool for fishing sucker rod out of a well according to  claim 1  further comprising:
 a top end of said slip provided with teeth for engaging a sucker rod to prevent rotational slippage therebetween.   
   
   
       10 . A sucker rod fishing tool for fishing sucker rod out of a well according to  claim 1  further comprising:
 a bottom piece, said bottom piece provided with threads on its top end for threadable engagement with threads provided on a bottom end of said barrel piece, and said a bottom end of said bottom piece provided with an internal bevel to aid in admitting a sucker rod into the bottom piece.   
   
   
       11 . A sucker rod fishing tool for fishing sucker rod out of a well according to  claim 10  further comprising:
 said bottom end of said bottom piece provided with a lip guide to aid in admitting a sucker rod into the bottom piece.   
   
   
       12 . A sucker rod fishing tool for fishing sucker rod out of a well according to  claim 10  wherein the top piece is made from a single solid piece of metal, the barrel piece is made from a single piece of metal tube, the bottom piece is made from a single piece of metal tube, and the slip is made from cast metal. 
   
   
       13 . (canceled) 
   
   
       14 . A sucker rod fishing tool for fishing sucker rod out of a well according to  claim 2  further comprising:
 a bottom piece, said bottom piece provided with threads on its top end for threadable engagement with threads provided on a bottom end of said barrel piece, and said a bottom end of said bottom piece provided with an internal bevel to aid in admitting a sucker rod into the bottom piece.   
   
   
       15 . A sucker rod fishing tool for fishing sucker rod out of a well according to  claim 14  wherein the top piece is made from a single solid piece of metal, the barrel piece is made from a single piece of metal tube, and the bottom piece is made from a single piece of metal tube. 
   
   
       16 . A sucker rod fishing tool for fishing sucker rod out of a well according to  claim 15  further comprising:
 said bottom end of said bottom piece provided with a lip guide to aid in admitting a sucker rod into the bottom piece.   
   
   
       17 . A sucker rod fishing tool for fishing sucker rod out of a well according to  claim 2  wherein the top piece is made from a single solid piece of metal and the barrel piece is made from a single piece of metal tube. 
   
   
       18 . A sucker rod fishing tool for fishing sucker rod out of a well according to  claim 17  further comprising:
 said barrel piece provided with at least two parallel grooves milled into its interior wall for slidably retaining ears provided on said slip.   
   
   
       19 . A sucker rod fishing tool for fishing sucker rod out of a well according to  claim 18  wherein said grooves and said ears on the slip are both provided with a rounded radius to reduce stress on the barrel piece. 
   
   
       20 . A sucker rod fishing tool for fishing sucker rod out of a well according to  claim 2  further comprising:
 said top piece provided with a channel therethrough for allowing liquids to pass through the top piece as the top piece is moved into and out of a well.   
   
   
       21 . A sucker rod fishing tool for fishing sucker rod out of a well according to  claim 2  further comprising:
 a bottom end of said barrel piece provided with an internal bevel to aid in admitting a sucker rod into the barrel piece, and a weld provided at a bottom end of the grooves to retain the slip therein.   
   
   
       22 . A sucker rod fishing tool for fishing sucker rod out of a well according to  claim 2  further comprising:
 a bell, said bell provided with threads on its top end for threadable engagement with threads provided on a bottom end of said barrel piece, and said a bottom end of said bell provided with an internal bevel to aid in admitting a sucker rod into the barrel piece   
   
   
       23 . A sucker rod fishing tool for fishing sucker rod out of a well according to  claim 2  further comprising:
 a bottom edge of the slip provided with a bevel on its internal face, said bevel having a half moon configuration to provide for smooth engagement of the slip with a sucker rod as the rod enters the barrel piece and pushes the slip upward.   
   
   
       24 . A sucker rod fishing tool for fishing sucker rod out of a well according to  claim 23  further comprising:
 a top end of said slip provided with teeth for engaging a sucker rod to prevent rotational slippage therebetween.   
   
   
       25 . A sucker rod fishing tool for fishing sucker rod out of a well according to  claim 23  wherein the slip is made from cast metal.