Multi-function Surge Reduction Apparatus

Abstract

A multi-function diverter tool is disclosed that allows positive-indication opening and closing of the tool in a downhole environment.

I claim: 
     
         1 . A diverter tool for use in downhole operations, said tool comprising,
 a tool body comprising an interior and an exterior, and comprising ports capable of allowing fluid communication between said interior and exterior of said tool body,   a first sleeve interior to said tool body, wherein said first sleeve is selectively moveable between an initial closed position and an open position, and wherein fluid communication between said interior and exterior of said tool body is precluded in said closed position and possible in said open position,   a second sleeve interior to said tool body, wherein said second sleeve is selectively moveable between a first position, and a second position, and wherein fluid communication between said interior and exterior of said tool body is possible in said first position and precluded in said second position,   means for selectively moving said first sleeve from said closed position to said open position, and   means for selectively moving said second sleeve from said first position to said second position.   
     
     
         2 . The device of  claim 1 , wherein said means for selectively moving said first sleeve from said closed position to said open position comprises a first yieldable seat connected to said first sleeve, wherein said first yieldable seat can selectively retain a first plugging device in sealing configuration with said first yieldable seat. 
     
     
         3 . The device of  claim 2 , wherein said means for selectively moving said second sleeve from said first position to said second position comprises a second yieldable seat connected to said second sleeve, wherein said second yieldable seat can selectively retain a second plugging device in sealing configuration with said second yieldable seat. 
     
     
         4 . The device of  claim 3 , additionally comprising a third yieldable seat capable of selectively retaining said second plugging device in sealing configuration with said third yieldable seat. 
     
     
         5 . The device of  claim 1 , wherein said means for selectively moving said first sleeve from said closed position to said open position comprises a first shearable member. 
     
     
         6 . The device of  claim 5 , wherein said means for selectively moving said first sleeve from said closed position to said open position comprises a plurality of shear screws. 
     
     
         7 . The device of  claim 1 , wherein said means for selectively moving said second sleeve from said first position to said second position comprises a second shearable member. 
     
     
         8 . The device of  claim 7 , wherein said means for selectively moving said second sleeve from said first position to said second position comprises a plurality of shear screws. 
     
     
         9 . The device of  claim 1 , additionally comprising a selectively releasable means for locking said second sleeve into position until after said first sleeve has been moved from said closed position to said open position. 
     
     
         10 . The device of  claim 6 , additionally comprising a selectively releasable means for locking said second sleeve into position until after said first sleeve has been moved from said closed position to said open position. 
     
     
         11 . The device of  claim 8 , additionally comprising a selectively releasable means for locking said second sleeve into position until after said first sleeve has been moved from said closed position to said open position. 
     
     
         12 . The device of  claim 9 , wherein said selectively releasable means for locking said second sleeve into position until after said first sleeve has been moved from said open position to said closed position comprises locking dogs, and wherein said locking dogs are held in position by said first sleeve when said first sleeve is in said closed position. 
     
     
         13 . The device of  claim 10 , wherein said selectively releasable means for locking said second sleeve into position until after said first sleeve has been moved from said open position to said closed position comprises locking dogs, and wherein said locking dogs are held in position by said first sleeve when said first sleeve is in said closed position. 
     
     
         14 . The device of  claim 11 , wherein said selectively releasable means for locking said second sleeve into position until after said first sleeve has been moved from said open position to said closed position comprises locking dogs, and wherein said locking dogs are held in position by said first sleeve when said first sleeve is in said closed position.