Method and system to conduct measurement while cementing

Abstract

A system is provided for cementing a wellbore having a casing string disposed in the wellbore. The system includes a cement tool operable to be deployed down the wellbore through the casing string from a surface during cementing process of the wellbore, a fiber optic cable, and a computing device. The fiber optic cable is coupled with the cement tool such that the fiber optic cable spans the wellbore from the cement tool to the surface. The computing device is communicatively coupled with the fiber optic cable and is operable to receive and process signals from the fiber optic cable during the cementing process.

1 . A system for cementing a wellbore having a casing string disposed in the wellbore, the system comprising:
 a cement tool operable to be deployed down a wellbore through a casing string from a surface during cementing process of the wellbore;   a fiber optic cable coupled with the cement tool such that the fiber optic cable spans the wellbore from the cement tool to the surface; and   a computing device communicatively coupled with the fiber optic cable, the computing device operable to receive and process signals from the fiber optic cable during the cementing process.   
     
     
         2 . The system of  claim 1 , wherein the fiber optic cable is a distributed acoustic sensor, wherein the fiber optic cable acoustically detects cement properties of the cementing process. 
     
     
         3 . The system of  claim 2 , wherein the cement properties include wellbore leak, the wellbore leak including one or more of the following: gas leak, water leak, hydrocarbon leak, and/or cement leak. 
     
     
         4 . The system of  claim 2 , wherein the cement properties include one or more of the following:
 flow detection external to the wellbore, cement frothing, activity outside of the wellbore during cement curing, one or more thief zones, cement integrity, and/or cement quantity.   
     
     
         5 . The system of  claim 1 , further comprising one or more external sensors disposed inside and/or outside of the wellbore, the external sensors operable to acoustically transmit external sensor data to the fiber optic cable, the computing device receiving the external sensor data via the fiber optic cable. 
     
     
         6 . The system of  claim 1 , wherein the cement tool includes a cement plug and/or a dart operable to be received by a lower cement plug disposed in the wellbore. 
     
     
         7 . The system of  claim 1 , wherein the cement tool is deployed down the wellbore by injection of displacement fluid from the surface. 
     
     
         8 . A cementing device comprising:
 a cement tool operable to be deployed down a wellbore from a surface during cementing process of the wellbore; and   a fiber optic cable coupled with the cement tool such that the fiber optic cable spans the wellbore from the cement tool to the surface.   
     
     
         9 . The cementing device of  claim 8 , wherein the fiber optic cable is a distributed acoustic sensor, wherein the fiber optic cable acoustically detects cement properties of the cementing process. 
     
     
         10 . The cementing device of  claim 9 , wherein the cement properties include wellbore leak, the wellbore leak including one or more of the following: gas leak, water leak, hydrocarbon leak, and/or cement leak. 
     
     
         11 . The cementing device of  claim 9 , wherein the cement properties include one or more of the following: flow detection external to the wellbore, cement frothing, activity outside of the wellbore during cement curing, one or more thief zones, cement integrity, and/or cement quantity. 
     
     
         12 . The cementing device of  claim 8 , wherein the fiber optic cable is communicatively coupled with a computing device which is operable to receive and process signals from the fiber optic cable. 
     
     
         13 . The cementing device of  claim 12 , further comprising one or more external sensors disposed inside and/or outside of the wellbore, the external sensors operable to acoustically transmit external sensor data to the fiber optic cable, the computing device receiving the external sensor data via the fiber optic cable. 
     
     
         14 . The cementing device of  claim 8 , wherein the cement tool includes a cement plug and/or a dart operable to be received by a lower cement plug disposed in the wellbore. 
     
     
         15 . The cementing device of  claim 8 , wherein the cement tool is deployed down the wellbore by injection of displacement fluid from the surface. 
     
     
         16 . A method comprising:
 deploying a cementing device down a wellbore from a surface during cementing process of the wellbore, the cementing device including:
 a cement tool; and 
 a fiber optic cable coupled with the cement tool such that the fiber optic cable spans the wellbore from the cement tool to the surface; 
   acoustically detecting, by the fiber optic cable, cement properties of the cementing process;   receiving, by a computing device communicatively coupled with the fiber optic cable, signals from the fiber optic cable during the cementing process; and   processing, by the computing device, the signals from the fiber optic cable.   
     
     
         17 . The method of  claim 16 , wherein the fiber optic cable is a distributed acoustic sensor. 
     
     
         18 . The method of  claim 16 , wherein the cement tool includes a cement plug and/or a dart operable to be received by a lower cement plug disposed in the wellbore. 
     
     
         19 . The method of  claim 16 , further comprising:
 measuring, by one or more external sensors disposed inside and/or outside of the wellbore, parameters of the wellbore and/or the cementing process;   acoustically transmitting, from the one or more external sensors, external sensor data to the fiber optic cable;   receiving, by the computing device, the external sensor data via the fiber optic cable.   
     
     
         20 . The method of  claim 16 , further comprising:
 injecting displacement fluid into the wellbore from the surface to deploy the cement tool.