Hydraulic downhole oil recovery system

Abstract

An improved hydraulic downhole oil recovery system that incorporates an above ground unit and a submersible, reciprocating downhole pump unit. This system, by pumping oil to the surface both during the upstroke and downstroke, is able to continuously pump oil to the surface as never done before. Oil production is doubled with virtually no increase in energy consumption during operation. Water-based fluid, rather than hydraulic fluid, is responsible for actuating the reciprocating downhole pump unit. The water-based fluid is transferred through the system using coil tubing. The system further relies upon coil exterior production tubing to provide exceptional advantage in deviated oil wells.

1 . An improved hydraulic downhole oil recovery system, comprising: 
 an above ground surface unit, further comprising 
 a fluid transfer means for transferring a fluid through one or more fluid-transfer tubes,  
 a pressure measuring means for measuring pressure on said fluid-transfer tubes  
 a fluid-transfer tube receiving means;  
   said fluid-transfer tubes, wherein 
 said tubes mate with said above ground surface unit at a first end and mate with a submersible downhole unit at a second end;  
   said submersible downhole unit, further comprising 
 an inner removable shell, where said inner removable shell houses 
 a plurality of fluid transfer tubes,  
 a fluid-transfer tube receiving means, said fluid-transfer tube receiving means being reversibly mated with said fluid-transfer tube second end, and said fluid-transfer tube receiving means being located on either side of a power piston,  
 said power piston, where said power piston is actuated between a first position and a second position by differential pressure exerted on either side of said power piston,  
 a connecting rod extending between said power piston and a production piston, where said connecting rod holds said power piston and said production piston in a fixed position with respect to one another,  
 a production piston, where said production piston is actuated between a first position and a second position by corresponding actuation of said power piston and connection rod,  
 a first tube and a second tube, configured so that said second tube joins said first tube above and below said production piston, and where production fluid is pushed through said first tube during an production piston upstroke, and where production fluid is pushed though said second tube during a production piston downstroke,  
 a plurality of valves allowing for one-way flow of a production fluid as said production fluid cycles through said inner removable housing.  
 
   
   
   
       2 . The improved hydraulic downhole oil recovery system of  claim 1 , where 
 said inner removable shell further houses one or more apertures configured to allow production fluid to flow into said recovery system.    
   
   
       3 . The improved hydraulic downhole oil recovery system of  claim 1 , wherein 
 said fluid-transfer tubes are comprised of coil tubing.    
   
   
       4 . The improved hydraulic downhole oil recovery system of  claim 1 , wherein 
 said removable inner shell is comprised of coil tubing.    
   
   
       5 . The improved hydraulic downhole oil recovery system of  claim 1 , wherein 
 said fluid is water-based fluid.    
   
   
       6 . A method of using an improved hydraulic downhole oil recovery system comprising the steps of selecting: 
 an above ground surface unit, further comprising 
 a fluid transfer means for transferring a fluid through one or more fluid-transfer tubes,  
 a pressure measuring means for measuring pressure on said fluid-transfer tubes  
 a fluid-transfer tube receiving means;  
   said fluid-transfer tubes, wherein 
 said tubes mate with said above ground surface unit at a first end and mate with a submersible downhole unit at a second end;  
   said submersible downhole unit, further comprising 
 an inner removable shell, where said inner removable shell houses 
 a plurality of fluid transfer tubes,  
 a fluid-transfer tube receiving means, said fluid-transfer tube receiving means being reversibly mated with said fluid-transfer tube second end, and said fluid-transfer tube receiving means being located on either side of a power piston,  
 said power piston, where said power piston is actuated between a first position and a second position by differential pressure exerted on either side of said power piston,  
 a connecting rod extending between said power piston and a production piston, where said connecting rod holds said power piston and said production piston in a fixed position with respect to one another,  
 a production piston, where said production piston is actuated between a first position and a second position by corresponding actuation of said power piston and connection rod,  
 a first tube and a second tube, configured so that said second tube joins said first tube above and below said production piston, and where production fluid is pushed through said first tube during an production piston upstroke, and where production fluid is pushed though said second tube during a production piston downstroke,  
 a plurality of valves allowing for one-way flow of a production fluid as said production fluid cycles through said inner removable housing.