Impact Resistant Material in Setting Tool

Abstract

A setting tool comprising a first and a second cylindrical body with inner bores, a third cylindrical body engaged to the first cylindrical body and having an inner cavity with an axial opening adapted to accept a power charge and a having a distal end with a shoulder engaged with the second cylindrical body, a fourth cylindrical body coupled to the third cylindrical body and having a transverse slot, a fifth cylindrical body fixed to the second cylindrical body and having an inner bore wherein the fourth cylindrical body is engaged therewith and further having a radial face within the second cylindrical body, a disc shaped impact dampening material with a hollow center having the fourth cylindrical body is located there through and coupled to the radial face of the fifth cylindrical body, and a sixth cylindrical body coupled to the fifth cylindrical body and having a transverse slot.

What is claimed is: 
     
         1 . A setting tool apparatus comprising:
 a first cylindrical body with an inner bore;   a second cylindrical body with an inner bore, being coaxial with and coupled to the first cylindrical body;   a third cylindrical body slideably with a first end engaged to the inner bore of the first cylindrical body and having an inner cavity with an axial opening at the first end adapted to accept a power charge and a having a distal end with a shoulder slideably engaged with the second cylindrical body inner bore;   a fourth cylindrical body with a first end coupled to the distal end of the third cylindrical body and having a distal end with a transverse slot;   a fifth cylindrical body fixed to the distal end of the second cylindrical body and having an inner bore wherein the fourth cylindrical body is slideably engaged therewith and further having a radial face within the second cylindrical body;   a disc shaped impact dampening material with a hollow center having the fourth cylindrical body is located therethrough and coupled to the radial face of the fifth cylindrical body;   a sixth cylindrical body coupled to the fifth cylindrical body and having a transverse slot; and   wherein the shoulder of the third cylindrical body engages the disc shaped impact dampening material when the third cylindrical body travels a predetermined distance within the second cylindrical body.   
     
     
         2 . The apparatus of  claim 1  wherein the inner cavity of the third cylindrical body forms a power charge chamber. 
     
     
         3 . The apparatus of  claim 1  wherein the fourth cylindrical body is piston 
     
     
         4 . The apparatus of  claim 1  wherein a chamber is formed by the first piston and the cylindrical body. 
     
     
         5 . A setting tool apparatus comprising:
 a cylindrical body having a center axis, a first end, a second end, an inner surface, and an outer surface;   a first piston located within the cylindrical body and axially aligned with the cylindrical body, having a first end and a second end, the first end coupled to a second cylindrical body with a raised radial shoulder;   a cylindrical mandrel extending from the second end of the first piston and being axially aligned with the cylindrical body;   a cylinder head coupled to the second end of the cylindrical body and axially aligned with the cylindrical body and having an inner radial face with the cylindrical mandrel located therethrough;   an impact dampening material in contact with the inner radial face; and   wherein the impact dampening material absorbs the energy of the piston moving downhole within the cylindrical body without a dampening fluid.   
     
     
         6 . The apparatus of  claim 5  further comprising a power charge located proximate to the first cylindrical body, wherein gases generated by the power charge can enter second cylindrical body. 
     
     
         7 . The apparatus of  claim 6  further comprising a firing head coupled to the power charge. 
     
     
         8 . A method for setting a plug in a borehole comprising:
 activating a firing head;   starting a gas pressure generating chemical reaction;   pressurizing a chamber located with a cylinder with the generated gas pressure;   moving a piston disposed within the cylinder in a downhole axial direction with the generated gas;   setting an expandable packer using the downhole motion of the piston; and   impacting the first piston against an impact dampening material, wherein the impact stops the movement of the piston without the use of a hydraulic fluid.   
     
     
         9 . A method as in  claim 8  further comprising placing a setting tool in a borehole at a predetermined location for installing a bridge plug. 
     
     
         10 . A method as in  claim 8  further comprising shearing a shear stud coupled between a setting tool and a setting plug. 
     
     
         11 . A method as in  claim 8  further comprising removing the setting tool from the borehole after setting a bridge plug. 
     
     
         12 . The method as in  claim 8  wherein the expandable packer is a bridge plug.