Annular flow jet pump for solid liquid gas media

Abstract

A fluid jet pump assembly is provided having a pump body for receiving a plurality of fluids to be pumped. The assembly includes a venturi subassembly mounted within the pump body having a venturi throat section placed in a pump fluid flow path for receiving a power fluid and a well fluid at a venturi inlet. The venturi subassembly is in fluid communication with an outlet from the pump body. The assembly includes an injection nozzle having a first injector port located at a center of a longitudinal axis of the injector nozzle and defines a flow path for directing the well fluid through a center region of the pump fluid flow path. The injection nozzle includes a second injector port subassembly with one or more openings arranged about a first circumference of the first injector port for directing the power fluid towards periphery of the pump fluid flow path.

1 . A fluid jet pump assembly comprising:
 a pump body having a longitudinal passage for receiving a plurality of fluids to be pumped;   a venturi subassembly mounted within the pump body including a venturi throat section placed in a pump fluid flow path for receiving a power fluid and a well fluid at a venturi inlet, wherein the venturi subassembly is operably connected in fluid communication with an outlet from the pump body; and   an injection nozzle disposed within the pump body comprising
 a first injector port located at a center of a longitudinal axis of the injector nozzle and defining a flow path for directing the well fluid through a center region of the pump fluid flow path; and 
 a second injector port subassembly comprising one or more openings arranged about a first circumference of the first injector port, wherein the one or more openings are configured to direct the power fluid towards periphery of the pump fluid flow path. 
   
     
     
         2 . The fluid jet pump assembly of  claim 1 , wherein the first injector port comprises: a first conduit substantially cylindrically shaped and located about the longitudinal axis for directing the well fluid. 
     
     
         3 . The fluid jet pump assembly of  claim 1 , wherein the one or more openings comprise one or more channels carrying the power fluid. 
     
     
         4 . The fluid jet pump assembly of  claim 3 , wherein the one or more channels comprises: one or more conduits at least partially surrounding and concentrically aligned with said first conduit. 
     
     
         5 . The fluid jet pump assembly of  claim 1 , wherein the one or more openings of the second injector port assembly comprise a plurality of discrete openings arranged about the first circumference for injecting the power fluid. 
     
     
         6 . The fluid jet pump assembly of  claim 1 , wherein the one or more openings are in fluid communication with corresponding one or more injection flow paths configured to be controlled independently. 
     
     
         7 . The fluid jet pump assembly of  claim 1 , wherein the one or more openings of the second injector port subassembly are communicatively coupled to a plurality of toroidal flow paths configured to swirl a flow of power fluid such that the flow of power fluid comprises at least an axial flow component and a circumferential flow component. 
     
     
         8 . The fluid jet pump assembly of  claim 1 , wherein the injection nozzle is configured to be operable at a low inlet suction pressure due to reduced drag on the well fluid. 
     
     
         9 . A system for pumping fluids comprising:
 a tubing string comprising a plurality of concentric tubes located within a wellbore for carrying fluids,   a plurality of fluid jet pumps, wherein each of the fluid jet pumps comprises:
 a pump body having a longitudinal passage for receiving a plurality of fluids to be pumped;
 a venturi subassembly mounted within the pump body including a venturi throat section placed in a pump fluid flow path for receiving a power fluid and a well fluid at a venturi inlet, wherein the venturi subassembly is operably connected in fluid communication with an outlet from said pump body; and 
 an injection nozzle disposed within the pump body comprising
 a first injector port located at a center of a longitudinal axis of the injector nozzle and defining a flow path for directing the well fluid through a center region of the pump fluid flow path; and 
 a second injector port subassembly comprising one or more openings arranged about a first circumference of the first injector port, wherein the one or more openings are configured to direct the power fluid towards periphery of the pump fluid flow path. 
 
 
   
     
     
         10 . The system of  claim 9 , wherein the each of the plurality of jet pumps is configured to be individually operated by a plurality of pressure range sensitive devices. 
     
     
         11 . The system of  claim 10 , wherein the plurality of pressure range sensitive devices comprises injection pressure-operated (IPO) valves. 
     
     
         12 . The system of  claim 9 , wherein the first injector port comprises: a first conduit substantially cylindrically shaped and located about the longitudinal axis for directing the well fluid. 
     
     
         13 . The system of  claim 9 , wherein the one or more openings comprise one or more channels located in an annulus region around the first injector port carrying the power fluid. 
     
     
         14 . The system of  claim 9 , wherein the plurality of concentric tubes comprises an inner tube and an outer tube forming an annulus region therebetween. 
     
     
         15 . The system of  claim 15 , wherein the power fluid is pumped down through the inner tube such that the well fluid is forced upward through the annulus region between the outer tube and the inner tube. 
     
     
         16 . The system of  claim 15 , wherein the power fluid is pumped down through the annulus region between the outer tube and the inner tube and the well fluid is forced upward through the inner tube. 
     
     
         17 . A method of isolating a well fluid from a fluid-containing reservoir, the method comprising:
 pumping a flow of the well fluid through a center region of the pump fluid flow path through a first injector port located at a center of a longitudinal axis of an injector nozzle;   pumping a flow of power fluid through a second injector port subassembly comprising one or more openings arranged about a first circumference of the first injector port causing the flow of power fluid towards periphery of the pump fluid flow path; and   controlling the flow of power fluid through one or more openings of the second injector port subassembly by independently controlling one or more injection jets in fluid communication with the one or more openings of the second injector port subassembly.   
     
     
         18 . The method of  claim 17 , further comprising swirling a flow of power fluid through the one or more openings of the second injector port assembly via to a plurality of toroidal flow paths such that the flow of power fluid comprises at least an axial flow component and a circumferential flow component. 
     
     
         19 . The method of  claim 17 , further comprising operating the first injector port and the second injector port subassembly at a low inlet suction pressure for reducing drag on the well fluid.