Fluid pump

Abstract

The present invention relates to the oil pump, and can be used with a standard pump jack. The pump can be used to withdraw any type of fluid, including water for example. Certain aspects of the invention relate to a method and apparatus for efficiently converting the up and down motion of the pump jack into a reliable vacuum source which can reliably pull unrefined/crude oil from the first depth to the second depth.

1 . A pump for moving a target fluid from a first depth to a second depth and designed for use with a pump jack, said pump designed to fit within a bore in the ground, said pump comprising a upper chamber, lower chamber, operational fluid compartment, target fluid compartment, rod having a volume, hydraulic cylinder having a volume, pipe, tank, diaphragm, an intake, and an upper valve and lower valve:
 a. said rod disposed within and slideable within the hydraulic cylinder;   b. said hydraulic cylinder, pipe and tank composing an operational fluid compartment containing operational fluid;   c. said hydraulic cylinder, pipe, and tank in fluid communication with each another and composing the operational fluid compartment;   d. said upper and lower chamber in fluid communication with each other and composing the target fluid compartment;   e. said operational fluid compartment containing a volume and operational fluid, and target fluid compartment design to store the target fluid;   f. said operational fluid causing the diaphragms to move from a concave position to a convex position when the rod is moved from an upper position to a lower position;   g. said upper valve moving from a closed position to an open position when the diaphragm is moved from a concave position to a convex position;   h. said lower valve moving from an open position to a closed position when the diaphragm is moved from a concave position to a convex position;   i. said target fluid providing a pushing force against the upper valve to move the valve from the closed position to the open position thereby allowing the target fluid to enter the upper chamber; and   j. said target fluid providing a pushing force against the lower valve to move the valve from the open position to the closed position thereby blocking the target fluid from entering the intake.   
     
     
         2 . The pump of  claim 1  wherein:
 a. said operational fluid causing the diaphragms to move from a convex position to a concave position when the rod is moved from a lower position to an upper position; 
 b. said upper valve moving from an open position to a closed position when the diaphragm is moved from a convex position to a concave position; 
 c. said lower valve moving from a closed position to an open position when the diaphragm is moved from a convex position to a concave position; 
 d. said target fluid providing a suction force against the upper valve to move the valve from the open position to the closed position thereby preventing the target fluid from receding from the upper chamber into the lower chamber; and 
 e. said target fluid providing a suction force against the lower valve to move the valve from the closed position to the upper position thereby blocking the target fluid from entering the intake. 
 
     
     
         3 . The pump of  claim 1  wherein said upper and lower valve having substantially the same structure; and said lower chamber containing the lower valve, and said upper chamber containing the upper valve. 
     
     
         4 . The pump of  claim 1 , wherein said tank comprises a shield, a shell, and the diaphragm, wherein the shield restricts how far the diaphragm can expand when it is filled with operational fluid. 
     
     
         5 . The pump of  claim 1  wherein said operation fluid compartment containing between a minimum amount and maximum amount of operational fluid, wherein the minimum amount of operation fluid is equal to the volume of operational fluid compartment with the rod fully inserted into the cylinder and accounting for a change in operational fluid expansion based on temperature at the pump jack and at the pump, and the maximum amount of operation fluid is equal to the volume of the operational fluid compartment volume with the rod minimally inserted and accounting for a change in operational fluid expansion based on temperature at the pump jack and at the pump. 
     
     
         6 . The pump of  claim 1  wherein said operation fluid compartment containing at least V min     —     f  amount of operational fluid, but no more than V max     —     f  amount of operational fluid, wherein V min     —     f  equals (TT v +P v +H min )(1+C v *Δt) and V max     —     f  equals (TT v +P v +H max )(1+C v *Δt), wherein TT v  is total tank volume, P v  is total pipe volume, H min  equals the cylinder volume minus the rod volume in the cylinder at the lowest height of insertion, H max  equals the cylinder volume minus the rod volume in the cylinder at the highest point of insertion, C v  is a coefficient of operational fluid expansion, and Δt is equal to a change in temperature as measured at the hydraulic cylinder and temperature as measured at the pump jack. 
     
     
         7 . The pump of  claim 1 , comprising a cap having a j-hook and a catcher comprising a pin, wherein the pin of the catcher slides into the j-hook to allow a crane to withdraw the pump from the ground without dissembling the pump, adding a separate hook to pull out the pump, or enlarging the bore. 
     
     
         8 . A method for moving a target fluid from a first depth to a second depth for use with a pump jack, said method comprising the steps of:
 a. providing a pump designed to be placed in a bore, said pump comprising a upper chamber, lower chamber, operational fluid compartment, target fluid compartment, rod having a volume, hydraulic cylinder having a volume, pipe, tank, diaphragm, an intake, and an upper valve and lower valve;   b. disposing said rod within the hydraulic cylinder;   c. placing operational fluid within said hydraulic cylinder, pipes and tank; said cylinder, pipes, and tank composing an operational fluid compartment having a volume;   d. placing target fluid within said upper and lower chamber;   e. moving the rod from an upper position to a lower position to cause the operational fluid to move the diaphragms from a concave position to a convex position;   f. moving said upper valve from a closed position to an open position by moving said diaphragm from a concave position to a convex position;   g. moving said lower valve from an open position to a closed position by moving said diaphragm from a concave position to a convex position;   h. providing a pushing force with the target fluid to move the upper valve from the closed position to the open position thereby allowing the target fluid to enter the upper chamber; and   i. providing a pushing force against the lower valve to move the valve from the open position to the closed position thereby blocking the target fluid from entering the intake.   
     
     
         9 . The method of  claim 8  wherein:
 a. moving the rod from a lower position to an upper position to cause the operational fluid to move the diaphragms from a convex position to a concave position; 
 b. moving said upper valve from an open position to a closed position by moving the diaphragm from a convex position to a concave position; 
 c. moving said lower valve from a closed position to an open position by moving the diaphragm from a convex position to a concave position; 
 d. providing a suction force with the target fluid against the upper valve to move the valve from the open position to the closed position thereby preventing the target fluid from receding from the upper chamber into the lower chamber; and 
 e. providing a suction force with the target fluid against the lower valve to move the valve from the closed position to the upper position thereby blocking the target fluid from entering the intake. 
 
     
     
         10 . The method of  claim 8  wherein said upper and lower valve having substantially the same structure; and said lower chamber contains the lower valve, and said upper chamber contains the upper valve. 
     
     
         11 . The method of  claim 8  wherein said tank comprises a shield, a shell, and the diaphragm, wherein the shield restricts how far the diaphragm can expand when it is filled with operational fluid. 
     
     
         12 . The method of  claim 8  comprising the step of placing between a minimum amount and maximum amount of operational fluid into the operational fluid compartment, wherein the minimum amount of operation fluid is equal to the volume of operational fluid compartment with the rod fully inserted into the cylinder and accounting for a change in operational fluid expansion based on temperature at the pump jack and at the pump, and the maximum amount of operation fluid is the total operational fluid compartment volume with the rod minimally inserted and accounting for a change in operational fluid expansion based on temperature at the pump jack and at the pump. 
     
     
         13 . The method of  claim 8  comprising the step of placing between at least V min     —     f  amount of operational fluid, but no more than V max     —     f  amount of operational fluid in the operational fluid compartment, wherein V min     —     f  equals (TT v +P v +H min )(1+C v *Δt) and V max   —f  equals (TT v +P v +H max )(1+C v *Δt), wherein TT v  is total tank volume, P v  is total pipe volume, H min  equals the cylinder volume minus the rod volume in the cylinder at the lowest height of insertion, H max  equals the cylinder volume minus the rod volume in the cylinder at the highest point of insertion, C v  is a coefficient of operational fluid expansion, and Δt is equal to a change in temperature as measured at the hydraulic cylinder and temperature as measured at the pump jack. 
     
     
         14 . The method of  claim 8  comprising using a catcher having a pin to lock into a cap having a j-hook to withdraw the pump from the ground without dissembling the pump, adding a separate hook to pull out the pump, or enlarging the bore.