System and method for a water cooling pump

Abstract

A method and a system are provided for a deep well pump system having a high volume lift of hot or very hot fluids. In an embodiment, a high volume high temperature deep well pumping system uses an external source of cooling fluid to keep one or more vulnerable pumping apparatus components at an acceptable operating temperature. In an embodiment, the cooling fluid, after cooling the component(s), is released into the production fluid flow stream from the pump and both fluids are lifted back up to the surface. In an embodiment, a return tubing, line, or pipe can bring the cooling water back to the surface or other location with or without mixing it with the production fluid.

What is claimed is: 
     
         1 . A fluid pump system for a well, comprising:
 a pump apparatus having a tubing extending from a cooling fluid provider to a motor apparatus, the motor apparatus having an outlet through which fluid can exit from the motor apparatus,   wherein cooling fluid from the cooling fluid provider runs through the tubing and passes through the motor apparatus such that at least one of a temperature of any materials in the tubing and a temperature of the motor apparatus is affected.   
     
     
         2 . The fluid pump system of  claim 1 , wherein the temperature of the motor apparatus is decreased by the cooling fluid. 
     
     
         3 . The fluid pump system of  claim 2 , wherein the pump system is used for deep wells. 
     
     
         4 . The fluid pump system of  claim 3 , wherein the pump apparatus is one of a modified electrical submersible pump and a modified geared centrifugal pump. 
     
     
         5 . The fluid pump system of  claim 3 , wherein the pump apparatus has a pump driven by the motor apparatus to pressurize any well production fluid entering the pump from the well,
 wherein the resulting pressurized well production fluid is lifted up together with the cooling fluid in the well casing and outside the tubing to a top surface of the well.   
     
     
         6 . The fluid pump system of  claim 3 , wherein the cooling fluid is lifted up in a separate tubing device to one of a top surface of the well and the tubing extending from the cooling fluid provider. 
     
     
         7 . The fluid pump system of  claim 5 , wherein the cooling fluid is water. 
     
     
         8 . The fluid pump system of  claim 5 , further comprising a power cable for providing energy to the motor apparatus is run through the tubing,
 wherein a temperature of the power cable being decreased when in contact with the cooling fluid.   
     
     
         9 . The fluid pump system of  claim 5 , further comprising a power cable for providing energy to the motor apparatus is run outside of the tubing and inside the fluid pump system, wherein the power cable is made of a high temperature resistant material. 
     
     
         10 . A fluid pump method, comprising:
 transmitting a cooling fluid through a tubing from an upper level of a deep well pumping system to a motor of the deep well pumping system;   cooling by the cooling fluid the motor of the deep well pumping system as the cooling fluid passes through the motor;   leaving by the cooling fluid from the motor into a well casing of the deep well pumping system;   lifting the cooling fluid from the well casing to the upper level of the deep well pumping system,   wherein the cooling fluid is lifted to the upper level of the deep well pumping system with any pressurized well fluid, the pressurized well fluid having been pressurized by a pump of the deep well pumping system, the pump being driven by the motor.   
     
     
         11 . The fluid pump method of  claim 10 , wherein the cooling fluid cools a temperature of at least one element disposed within the tubing. 
     
     
         12 . The fluid pump method of  claim 11 , wherein the at least one element disposed within the tubing is at least one of a rod string and a power cable. 
     
     
         13 . The fluid pump method of  claim 11 , wherein the cooling fluid is water and the pressurized well fluid is at least one of water and oil. 
     
     
         14 . The fluid pump method of  claim 11 , wherein the cooling fluid is lifted to the upper level of the deep well pumping system in a separate cavity than the pressurized well fluid. 
     
     
         15 . The fluid pump method of  claim 11 , further comprising:
 separating the pressurized well fluid from the cooling fluid at the upper level of the deep well pumping system, so that any desired and undesired fluids are transported to their respective proper destinations.   
     
     
         16 . The fluid pump method of  claim 11 , wherein the deep well pumping system includes components of one of a geared centrifugal pump and an electric submersible pump, and that any tubing extending from an upper surface of the deep well pumping system to the motor is used as a conduit for the cooling fluid.