Fluid lifting system

Abstract

A fluid lifting for a lifting a geological fluid from a formation via a well while limiting environmental impact is provided. The fluid lifting system includes an assembly that is adapted to be raised and lowered within a lift tube by a cable or wire-line. When lowered the assembly traps a predetermined volume of fluid which is then lifted through the lift tube upon raising the assembly. The assembly includes two main components a valve body and a collar which is slidable along the valve body. The valve body includes an axial bore allowing atmospheric air to readily pass through the valve body so as to equalize air pressure across the valve body. The collar includes a fluid passage that is open to fluid flow when the collar is in a raised position along the valve body and which is closed to fluid flow when in a lowered position along the valve body.

1 . A fluid lifting system comprising: 
 a valve body adapted to be raised and lowered within a lift tube, said valve body defining an axial bore, said axial bore allowing fluid to freely flow through said valve body;    a collar slidably received by said valve body, said collar defining at least one fluid passage passing therethrough, wherein said fluid passage is open allowing fluid flow therethrough when said collar is in a raised position on said valve body and said fluid passage is closed preventing fluid flow therethrough when said collar is in a lowered position on said valve body; and    a lift cable attached to said valve body.    
     
     
         2 . The fluid lifting system of  claim 1 , further comprising: 
 a conduit attached to and extending upwardly from said valve body and in fluid communication with said axial bore defined by said valve body.    
     
     
         3 . The fluid lifting system of  claim 1 , wherein said lift tube defines a sand screen.  
     
     
         4 . The fluid lifting system of  claim 1 , wherein said collar contacts said lift tube and creates a fluid tight seal therewith.  
     
     
         5 . A ground water lifting system comprising: 
 a valve body slidably positioned within a lift tube, said valve body defining an axial bore, said axial bore allowing the equalization of fluid pressure across said valve body;    a collar mounted to said valve body so as to allow said collar to reciprocate a predetermined stroke along a section of said valve body, said collar defining at least one fluid passage extending therethrough, wherein said fluid passage is closed to fluid flow when said collar is at its lowest most point in said stroke, said collar defining a fluid tight seal with said lift tube; and    a lift cable, said lift attached to said valve body for raising and lowering said valve body within said lift tube.    
     
     
         6 . The ground water lifting system of  claim 5 , wherein said valve body defines a lower stop and an upper stop at a spaced distance from said lower stop, said upper stop defining an upper limit of said stroke and said lower stop defining a lower limit of said stroke.  
     
     
         7 . The ground water lifting system of  claim 6 , wherein said lower stop is a shoulder which engages said collar when said collar is at said lower limit and which seals said at least one fluid passage defined by said collar.  
     
     
         8 . The ground water lifting system of  claim 7 , wherein said shoulder is a tapered shoulder.  
     
     
         9 . The ground water lifting system of  claim 5 , further comprising a conduit attached to and extending upwardly from said valve body and in fluid communication with said axially bore thereof.  
     
     
         10 . The ground water lifting system of  claim 5 , wherein said lift tube defines a sand screen along a section of said lift tube.  
     
     
         11 . The ground water lifting system of  claim 5 , wherein said collar sinks at a slower rate then said valve body when said valve body and said collar are lowered into a column of fluid contained within said lift tube.