Combination surge/pressure wash tool for oil wells and method therefor

Abstract

A method and apparatus for cleaning oil wells to increase the flow of oil is disclosed. The combination pressure and surge wash tool has a nipple assembly. A by-pass port is coupled to the nipple assembly. A diverter cup is coupled to the by-pass port. A plurality of pressure wash cups are positioned on the tool. A pressure wash port is located between the plurality of pressure wash cups. A pump shoe assembly is coupled to a bottom pressure wash cup.

What is claimed is:  
     
         1 . A combination surge and pressure wash tool for cleaning wells comprising, in combination: 
 a nipple assembly;    a by-pass port coupled to the nipple assembly;    a diverter cup coupled to the by-pass port;    a plurality of pressure wash cups positioned on the tool;    a pressure wash port located between the plurality of pressure wash cups; and    a pump shoe assembly coupled to a bottom pressure wash cup.    
     
     
         2 . A combination surge and pressure wash tool for cleaning wells in accordance with  claim 1  wherein the nipple assembly is a perforated nipple assembly having a plurality of annulus located around an outer top perimeter.  
     
     
         3 . A combination surge and pressure wash tool for cleaning wells in accordance with  claim 1  wherein the nipple assembly is a non-port nipple assembly.  
     
     
         4 . A combination surge and pressure wash tool for cleaning wells in accordance with  claim 1  further comprising a collar assembly coupled to a top section of the tool.  
     
     
         5 . A combination surge and pressure wash tool for cleaning wells in accordance with  claim 1  wherein the by-pass port allows fluid to enter the tool on an upward movement of the tool.  
     
     
         6 . A combination surge and pressure wash tool for cleaning wells in accordance with  claim 1  wherein the diverter cup diverts fluid with debris down the tool and out the pump shoe assembly.  
     
     
         7 . A combination surge and pressure wash tool for cleaning wells in accordance with  claim 1  wherein the plurality of wash cups create a suction below each of the plurality of cups.  
     
     
         8 . A combination surge and pressure wash tool for cleaning wells in accordance with  claim 1  wherein the pressure wash port allows fluid to exit the tool at an elevated pressure to clean the wells.  
     
     
         9 . A combination surge and pressure wash tool for cleaning wells in accordance with  claim 1  wherein the pump shoe assembly comprises: 
 a connector coupled to a bottom section of the tool;  
 a pump shoe valve coupled to the connector; and  
 a blow plug coupled to the pump shoe valve.  
 
     
     
         10 . A combination surge and pressure wash tool for cleaning wells in accordance with  claim 9  further comprising a collar assembly coupled to the pump shoe valve and the blow plug.  
     
     
         11 . A combination surge and pressure wash tool for cleaning wells in accordance with  claim 9  further comprising a swing flap internal to the pump shoe valve wherein the swing flap is open on an upward movement of the tool and closed on the downward movement of the tool.  
     
     
         12 . A method of cleaning an oil well to increase oil flow comprising the steps of: 
 adding a water and oil soluble fluid into the oil well;    coupling a surge and pressure wash tool to a tubing string of the oil well;    moving the surge and pressure wash tool to a bottom of the oil well; and    raising the surge and pressure wash tool in a quick manner.    
     
     
         13 . The method of  claim 12  further comprising the step of injecting the water and oil soluble fluid into the surge and pressure wash tool.  
     
     
         14 . The method of  claim 12  further comprising the steps of: 
 moving the surge and pressure wash tool to a bottom of the oil well after raising the surge and pressure wash tool in a quick manner; and  
 raising the surge and pressure wash tool in a quick manner.  
 
     
     
         15 . The method of  claim 12  wherein the step of providing the surge and pressure wash tool.  
     
     
         16 . The method of  claim 15  wherein the step of providing surge and pressure wash tool further comprises the steps of: 
 providing a nipple assembly;  
 providing a by-pass port coupled to the nipple assembly wherein the port by-pass port allows fluid to enter the tool on an upward movement of the tool;  
 providing a diverter cup coupled to the by-pass port wherein the diverter cup diverts fluid with debris down the tool and out a bottom section of the tool;  
 providing a plurality of pressure wash cups positioned on the tool for creating a suction below each of the plurality of cups;  
 providing pressure wash port located between the plurality of pressure wash cups wherein the pressure wash port allows fluid to exit the tool at an elevated pressure to clean the wells; and  
 providing a pump shoe assembly coupled to a bottom pressure wash cup.  
 
     
     
         17 . The method of  claim 16  wherein the nipple assembly is a perforated nipple assembly having a plurality of annulus located around an outer top perimeter.  
     
     
         18 . The method of  claim 16  wherein the nipple assembly is a non-port nipple assembly.  
     
     
         19 . The method of  claim 16  wherein the pump shoe assembly comprises: 
 a connector coupled to a bottom section of the tool;  
 a pump shoe valve coupled to the connector; and  
 a blow plug coupled to the pump shoe valve.  
 
     
     
         20 . The method of  claim 19  further comprising the step of providing a swing flap internal to the pump shoe valve wherein the swing flap is open on an upward movement of the tool and closed on the downward movement of the tool.