Pump actuated jar for downhole sampling tools

Abstract

An apparatus configured to impart a force on a downhole component, having a piston configured to expand from a movement of a drilling fluid in a downhole environment, a weight configured to move from a first position to a second position, wherein the weight contacts the piston and the piston is configured to move the weight from the first position to the second position when the piston expands from movement of the drilling fluid, a spring configured to contact a bearing surface and the weight, wherein movement of the weight toward the second position compresses the spring, a return spring configured to impart a force on the weight to return the weight to the first position from the second position and a trigger mechanism configured to actuate a return of the weight from the second position to the first position by the return spring.

What is claimed is: 
     
         1 . An apparatus configured to impart a force on a downhole component, comprising:
 a piston configured to expand from a movement of a fluid;   a weight configured to move from a first position to a second position, wherein the weight contacts the piston and the piston is configured to move the weight from the first position to the second position when the piston expands from movement of the drilling fluid;   a spring configured to contact a bearing surface and the weight, wherein movement of the weight toward the second position compresses the spring;   a return spring configured to impart a force on the weight to return the weight to the first position from the second position; and   a trigger mechanism configured to actuate a return of the weight from the second position to the first position by the return spring.   
     
     
         2 . The apparatus according to  claim 1 , wherein the fluid is a drilling fluid. 
     
     
         3 . The apparatus according to  claim 1 , wherein the component is a downhole component. 
     
     
         4 . The apparatus according to  claim 1 , wherein the drilling fluid is in a downhole environment. 
     
     
         5 . A method for creating a force on a downhole tool, comprising:
 pumping a fluid to a downhole location;   expanding a piston in the downhole location, an expansion of the piston caused by the fluid entering the piston;   moving a weight through the expansion of the piston, the movement of the weight compressing a spring from an uncompressed position to a compressed position;   triggering a mechanism such that the weight is allowed to move and the spring returns from the compressed position to the uncompressed position; and   
       impacting the weight upon a surface to deliver a force to a downhole environment. 
     
     
         6 . The method according to  claim 5 , wherein the force is delivered to a tool string. 
     
     
         7 . The method according to  claim 5 , wherein the fluid is a drilling mud. 
     
     
         8 . The method according to  claim 5 , wherein the mechanism used for triggering is a ball bearing mechanism. 
     
     
         9 . The method according to  claim 5 , wherein the mechanism used for triggering is a keyed, twisting track trigger mechanism. 
     
     
         10 . The method according to  claim 5 , wherein the pumped fluid expands the piston through one flowline. 
     
     
         11 . The method according to  claim 5 , wherein the pumped fluid expands the piston through one of two flowlines.