Fiber deployed via a top plug

Abstract

Methods and systems for evaluating the effectiveness of a cementing process including a wellbore having a liner disposed therein to create a flow path and an annulus within the wellbore. A cementing tool positionable at the surface of the wellbore for pumping a cement composition through the liner. A plurality of sensors dispersed throughout the cement composition and capable of transmitting a location signal receivable via a fiber optic cable. A control facility communicatively coupled with the fiber optic cable having one or more processors which execute instructions including receiving location data from the plurality of sensors via the fiber optic cable, and evaluating the location of each of the sensors to determine the effectiveness of the cementing process.

What is claimed is: 
     
         1 . A method for evaluating a wellbore cementing process, the system comprising:
 inserting a wellbore tubular with a top plug and a bottom plug into the wellbore creating a flow path and an annulus between the wellbore tubular and the walls of the wellbore;   deploying a work string within the wellbore tubular coupled therewith;   performing a cementing process including pumping a cement composition through the work string and wellbore tubular and into the annulus, the cement composition having a plurality of sensors dispersed therein;   deploying a dart coupled with a fiber optic cable into the work string, the dart further couplable with the top plug;   interrogating the plurality of sensors via the fiber optic cable to obtain at least a location for each of the plurality of sensors; and   evaluating the location of each of the plurality of sensors to determine an effectiveness of the cementing process.   
     
     
         2 . The method of  claim 1 , further comprising mixing the plurality of sensors into the cement composition prior to pumping the cement composition into the work string. 
     
     
         3 . The method of  claim 1 , further comprising adding the plurality of sensors into the cement composition while the cement composition is being pumped into the work string. 
     
     
         4 . The method of  claim 1 , further comprising tagging each of the plurality of sensors with an identifier as each of the plurality of sensors enters the work string. 
     
     
         5 . The method of  claim 4 , further comprising:
 receiving, at a control facility, the identifier for each of the plurality of sensors;   transmitting the location for each of the plurality of sensors to the control facility via the fiber optic cable; and   determining, at the control facility, the effectiveness of the cementing process.   
     
     
         6 . The method of  claim 4 , wherein the effectiveness of the cementing process is determined in part by comparing the identifier of each of the plurality of sensors with the location for each of the plurality of sensors. 
     
     
         7 . The method of  claim 1 , further comprising:
 interrogating the plurality of sensors as the fiber optic cable descends through the wellbore to obtain data; and   ordering equipment to further evaluate the integrity of the cement based on the data obtained from the plurality of sensors.   
     
     
         8 . A system for evaluating a wellbore cementing process, the system comprising:
 a liner disposed within the wellbore, the liner creating a flow path and an annulus within the wellbore;   a cementing tool positionable at the surface of the wellbore for pumping a cement composition through the liner;   a plurality of sensors dispersed throughout the cement composition;   a fiber optic cable for communicating with the plurality of sensors and disposed within the flow path of the wellbore; and   a control facility communicatively coupled with the fiber optic cable, the control facility including one or more processors coupled with at least one non-transitory computer-readable storage medium storing instructions which, when executed by the one or more processors, cause the processors to:   pump the cement composition and plurality of sensors through the flow path of the wellbore and into the annulus;
 receive after the cementing process is completed, data from the plurality of sensors via the fiber optic cable, the data including at least a location of each of the plurality of sensors; and 
 evaluate the location of each of the plurality of sensors to determine an effectiveness of the cementing process. 
   
     
     
         9 . The system of  claim 8 , wherein the instructions further cause the processor to tag each of the plurality of sensors with an indicator upon entering the flow path of the wellbore. 
     
     
         10 . The system of  claim 9 , wherein the effectiveness of the cementing process is based at least in part on a comparison of the identifier of each of the plurality of sensors and the location of each of the plurality of sensors. 
     
     
         11 . The system of  claim 8 , wherein the location of each of the plurality of sensors is determined by interrogating the plurality of sensors via the fiber optic cable. 
     
     
         12 . The system of  claim 8 , wherein the cementing tool further comprises a mixing vessel where the plurality of sensors are mixed into the cement composition prior to pumping the cement composition into the flow path. 
     
     
         13 . The system of  claim 8 , wherein the cementing tool further comprises pumping equipment where the plurality of sensors are added to the cement composition as the cement composition is pumped into the flow path. 
     
     
         14 . The system of  claim 8 , further comprising a top plug disposed within the wellbore. 
     
     
         15 . The system of  claim 14 , further comprising a dart coupled with the fiber optic cable, the dart configured to engage with the top plug, wherein the top plug and the dart guide the fiber optic cable through the casing. 
     
     
         16 . A well system for evaluating a wellbore cementing process comprising:
 a wellbore tubular extendable within the wellbore and defining a flow path and an annulus;   a cementing tool positionable at the surface of the wellbore for pumping a cement composition into the wellbore tubular;
 a plurality of sensors dispersed within a cement composition, the plurality of sensors to detect a characteristic of the cement composition and output an electrical signal proportional to the characteristic; and 
 a fiber optic cable to detect the electrical signal from each of the plurality of sensors and transmit the signal to a control facility. 
   
     
     
         17 . The well system of  claim 16 , wherein the fiber optic cable is coupled with a dart and a top plug which guide the fiber optic cable through the flow path of the wellbore. 
     
     
         18 . The well system of  claim 16 , wherein the cementing tool pumps the cement composition and plurality of sensors through the flow path and into the annulus of the wellbore during a cementing process. 
     
     
         19 . The well system of  claim 18 , wherein the characteristic is a location of each of the plurality of sensors within the annulus of the wellbore. 
     
     
         20 . The well system of  claim 19 , wherein the control facility comprises a computing device to determine an effectiveness of the cementing process based in part on the location of each of the plurality of sensors.