Method of measuring the composition of production fluid flowing through an icd

Abstract

Disclosed herein are systems and methods of controlling downhole production flow from one or more production zones of a well. A system may include at least one downhole power generator, at least one sensor, at least one electronic assembly, and at least one production valve. In some systems, the downhole power generator, the sensor, the electronic assembly, and the production valve are incorporated within the same module. The downhole power generator is fluidically connected to the fluid inside the production tubing string. The sensor is electrically connected to the downhole power generator, wherein the sensor measures a phase of the fluid. The electronic assembly is connected to the downhole power generator and the sensor. The production valve is electrically connected to the electronic assembly and fluidly connected to the fluid inside the production tubing string.

What is claimed is: 
     
         1 . A system installed in a production tubing string comprising:
 a downhole power generator fluidically connected to a fluid inside the production tubing string;   a sensor electrically connected to the downhole power generator, wherein the sensor measures a phase of the fluid;   an electronic assembly connected to the downhole power generator and the sensor, wherein the electronic assembly communicates wirelessly with surface; and   a production valve electrically connected to the electronic assembly and fluidly connected to the fluid inside the production tubing string,   wherein the system controls downhole production flow from one or more production zones of a well.   
     
     
         2 . The system of  claim 1 , wherein the system is located within one module. 
     
     
         3 . The system of  claim 1 , wherein the sensor comprises at least one sensor selected from a group of sensors consisting of an optical sensor, a nuclear magnetic resonance spectrometer, a gas chromatography mass spectrometer, a resistivity sensor, an impedance sensor, an electromagnetic sensor, a pressure sensor, a temperature sensor, a density sensor, a viscosity sensor, and any combination thereof. 
     
     
         4 . The system of  claim 1 , wherein the system controls the downhole production flow from one or more production zones of a well based on a flow rate of the fluid calculated from the downhole power generator. 
     
     
         5 . The system of  claim 1 , wherein the sensor is coupled with a flow meter. 
     
     
         6 . The system of  claim 5 , wherein the sensor comprises at least one sensor selected from a group of sensors consisting of gamma ray multiphase flow meter, a capacitive flow meter, a magnetic inductive flow meter, a resonance flow meter, an ultrasonic flow meter, and any combination thereof. 
     
     
         7 . The system of  claim 1 , wherein the electronic assembly is autonomous. 
     
     
         8 . The system of  claim 1 , wherein the electronic assembly communicates wirelessly with surface by selectively fluctuating and varying a flow rate of the fluid inside the production tubing string received by a variable flow resistance system. 
     
     
         9 . The system of  claim 1 , wherein the production valve is an inflow control device or an interval control valve. 
     
     
         10 . The system of  claim 1 , further comprising a tracer that differentiates a water phase from an oil phase. 
     
     
         11 . The system of  claim 1 , further comprising a tracer that releases into the fluid upon abrasion with sand. 
     
     
         12 . A method comprising:
 controlling downhole production flow from one or more production zones of a well using a system installed in a production tubing string, wherein the system comprises:
 a downhole power generator fluidically connected to a fluid inside the production tubing string; 
 a sensor electrically connected to the downhole power generator, wherein the sensor measures a phase of the fluid; 
 an electronic assembly connected to the downhole power generator and the sensor; and 
 a production valve electrically connected to the electronic assembly and fluidly connected to the fluid inside the production tubing string; and 
   generating power from the downhole power generator to power at least partially the system.   
     
     
         13 . The method of  claim 12 , further calculating a flow rate of the fluid inside the production tubing string using the downhole power generator. 
     
     
         14 . The method of  claim 12 , wherein the electronic assembly is autonomous. 
     
     
         15 . The method of  claim 12 , wherein the electronic assembly communicates wirelessly with surface. 
     
     
         16 . The method of  claim 12 , further installing a tracer that differentiates a water phase from an oil phase. 
     
     
         17 . The method of  claim 12 , wherein the system further comprises a tracer that releases into the fluid upon abrasion with sand. 
     
     
         18 . The method of  claim 12 , wherein the sensor comprises at least one sensor selected from a group of sensors consisting of an optical sensor, a nuclear magnetic resonance spectrometer, a gas chromatography mass spectrometer, a resistivity sensor, an impedance sensor, an electromagnetic sensor, a pressure sensor, a temperature sensor, a density sensor, a viscosity sensor, and any combination thereof. 
     
     
         19 . The method of  claim 12 , wherein the production valve is an inflow control device or an interval control valve. 
     
     
         20 . The method of  claim 12 , wherein the sensor is coupled with a flow meter, and wherein the sensor comprises at least one sensor selected from a group of sensors consisting of gamma ray multiphase flow meter, a capacitive flow meter, a magnetic inductive flow meter, a resonance flow meter, an ultrasonic flow meter, and any combination thereof.