US2002129726A1PendingUtilityA1

Oil well perforator liner with high proportion of heavy metal

36
Priority: Mar 16, 2001Filed: Mar 16, 2001Published: Sep 19, 2002
Est. expiryMar 16, 2021(expired)· nominal 20-yr term from priority
Inventors:Nathan G. ClarkDavid J. Leidel
F42B 1/032
36
PatentIndex Score
0
Cited by
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References
0
Claims

Abstract

A shaped charge apparatus having an improved liner for a shaped charge constructed from a combination of powdered heavy metal and metal binder. Powdered heavy metal and metal binder is formed into a rigid shaped charge liner under very high pressure. The metal binder may be in powdered form or may be used to coat the powdered heavy metal particles prior to formation. The liner may also contain a relatively small percentage of other material to enhance lubrication or corrosion resistance.

Claims

exact text as granted — not AI-modified
What is claimed:  
     
         1 . A liner for a shaped charge comprising: 
 a mixture of powdered heavy metal and powdered binder metal formed into a rigid body wherein    the percentage of heavy metal in the mixture is within a range of approximately  90 . 0 % to 99.98% by weight.    
     
     
         2 . A liner for a shaped charge according to  claim 1  wherein 
 the heavy metal powder is chosen from the group consisting of tungsten, tantalum, hafnium, silver, gold, platinum, copper, or any mixture thereof.  
 
     
     
         3 . A liner for a shaped charge according to  claim 1  wherein 
 the heavy metal consists essentially of tungsten.  
 
     
     
         4 . A liner for a shaped charge according to  claim 1  wherein 
 the percentage of heavy metal in the mixture is within a range of approximately 99.0% to 99.98% by weight.  
 
     
     
         5 . A liner for a shaped charge according to  claim 1  wherein 
 the binder metal is chosen from the group consisting of copper, lead, zinc, tin, and bismuth.  
 
     
     
         6 . A liner for a shaped charge according to  claim 1  wherein 
 the binder metal consists essentially of lead.  
 
     
     
         7 . A liner for a shaped charge according to  claim 1  wherein 
 the mixture further comprises approximately 0.02% to 1.0% lubricant by weight.  
 
     
     
         8 . A liner for a shaped charge according to  claim 7  wherein 
 the lubricant comprises powdered graphite.  
 
     
     
         9 . A liner for a shaped charge according to  claim 7  wherein 
 the lubricant comprises oil.  
 
     
     
         10 . A liner for a shaped charged according to  claim 1  wherein 
 the percentage of heavy metal in the mixture is approximately 93.0%.  
 
     
     
         11 . A liner for a shaped charge comprising: 
 heavy metal powder, coated with a binder metal, formed into a rigid body.    
     
     
         12 . A liner for a shaped charge according to  claim 11  wherein 
 the heavy metal powder is chosen from the group consisting of tungsten, tantalum, hafnium, platinum, silver, gold, copper, or any mixture thereof.  
 
     
     
         13 . A liner for a shaped charge according to  claim 11  wherein 
 the heavy metal comprises tungsten.  
 
     
     
         14 . A liner for a shaped charge according to  claim 11  wherein 
 the binder metal is chosen from the group consisting of copper, tin, zinc, lead, bismuth or any mixture thereof.  
 
     
     
         15 . A liner for a shaped charge according to  claim 11  wherein 
 the percentage of heavy metal in the heavy metal powder is within a range of approximately 90.0% to 99.98% by weight.  
 
     
     
         16 . A liner for a shaped charge according to  claim 11  wherein 
 the percentage of heavy metal in the heavy metal liner is approximately 93.0%.  
 
     
     
         17 . A liner for a shaped charge according to  claim 11  wherein 
 the percentage of heavy metal is within a range of approximately 99.0% to 99.98% by weight.  
 
     
     
         18 . A liner for a shaped charge according to  claim 11  wherein 
 the heavy metal powder, coated with binder metal, is mixed with approximately 0.02% -1.0% lubricant by weight.  
 
     
     
         19 . A liner for a shaped charge according to  claim 18  wherein 
 the lubricant comprises powdered graphite.  
 
     
     
         20 . A liner for a shaped charge according to  claim 18  wherein 
 the lubricant comprises oil.  
 
     
     
         21 . A liner for a shaped charge comprising: 
 a mixture of powdered heavy metal, powdered metal binder, and a heavy metal powder coated with a binder metal formed into a rigid body.    
     
     
         22 . A liner for a shaped charge according to  claim 21  wherein 
 the rigid body is substantially conical.  
 
     
     
         23 . A liner for a shaped charge according to  claim 21  wherein 
 the rigid body is substantially conical.  
 
     
     
         24 . A liner for a shaped charge according to  claim 21  wherein 
 the rigid body is substantially conical.  
 
     
     
         25 . A liner for a shaped charge according to  claim 21  wherein 
 the percentage of heavy metal in the mixture is within a range of approximately 90.0% to 99.98% by weight.  
 
     
     
         26 . A liner for a shaped charge according to  claim 21  wherein 
 the percentage of heavy metal in the mixture is approximately 93.0%.  
 
     
     
         27 . A liner for a shaped charge according to  claim 21  wherein 
 the heavy metal powder is chosen from the group consisting of tungsten, tantalum, hafnium, silver, gold, platinum, copper, or any mixture thereof.  
 
     
     
         28 . A liner for a shaped charge according to  claim 21  wherein 
 the heavy metal consists essentially of tungsten.  
 
     
     
         29 . A liner for a shaped charge according to  claim 21  wherein 
 the percentage of heavy metal in the mixture is within a range of approximately 99.0% to 99.98% by weight.  
 
     
     
         30 . A liner for a shaped charge according to  claim 21  wherein 
 the binder metal is chosen from the group consisting of copper, lead, zinc, tin, and bismuth.  
 
     
     
         31 . A liner for a shaped charge according to  claim 21  wherein 
 the binder metal consists essentially of lead.  
 
     
     
         32 . A liner for a shaped charge according to  claim 21  wherein 
 the mixture further comprises approximately 0.02% to 1.0% lubricant by weight.  
 
     
     
         33 . A liner for a shaped charge according to  claim 21  wherein 
 the lubricant comprises powdered graphite.  
 
     
     
         34 . A liner for a shaped charge according to  claim 21  wherein 
 the lubricant comprises oil  
 
     
     
         35 . A liner for a shaped charge according to  claim 21  wherein 
 the mixture is compressively formed  
 
     
     
         36 . A liner for a shaped charge according to  claim 1  wherein 
 the mixture is compressively formed.  
 
     
     
         37 . A liner for a shaped charge according to  claim 11  wherein 
 the mixture is compressively formed.

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