Coiled tubing drilling advisor

Abstract

A coiled tubing drilling advisor is configured to generate coiled tubing drilling advisories that include supervisory instructions to rig personnel that provide supervisory oversight of a coiled tubing wellbore operation. The advisories include at least one of instructions to meet operational targets, instructions to maintain the coiled tubing wellbore operation within standard operating procedures, and instructions to address operational anomalies. The advisories are generated based on an input coiled tubing drilling configuration, input coiled tubing drilling operational parameters, and received downhole and surface sensor measurements made during a coiled tubing wellbore operation.

1 . A method for advising a coiled tubing wellbore operation, the method comprising: 
 inputting a coiled tubing drilling configuration into a supervisory control system;    inputting coiled tubing drilling operational parameters into the supervisory control system;    receiving downhole and surface sensor measurements in the supervisory control system, the sensor measurements made during the coiled tubing wellbore operation; and    evaluating the sensor measurements with the supervisory control system to generate coiled tubing drilling advisories, the generated coiled tubing drilling advisories including supervisory instructions to rig personnel that provide supervisory oversight of the coiled tubing wellbore operation, the coiled tubing drilling advisories including at least one of instructions to meet operational targets, instructions to maintain the coiled tubing wellbore operation within standard operating procedures, and instructions to address operational anomalies.    
     
     
         2 . The method of  claim 1 , wherein the instructions are implemented automatically without human intervention.  
     
     
         3 . The method of  claim 1 , wherein the coiled tubing drilling advisories comprise supervisory instructions to change at least one of the coiled tubing drilling operational parameters in response to the received downhole and surface sensor measurements. 
     
     
         4 . The method of  claim 1 , wherein the supervisory instructions comprise instructions to change at least one of the coiled tubing drilling operational parameters in a coiled tubing subsystem, a bottom hole assembly subsystem, or an underbalanced or managed pressure subsystem. 
     
     
         5 . The method of  claim 1 , wherein the supervisory instructions comprise instructions to meet operational targets including at least one of underbalanced or managed pressure drilling targets, hole cleaning targets, and drilling performance targets.  
     
     
         6 . The method of  claim 1 , wherein the supervisory instructions comprise instructions to maintain the coiled tubing wellbore operation within standard operating procedures for at least one of a coiled tubing drilling operation, a wiper trip operation, a sidetracking operation, and a tripping operation.  
     
     
         7 . The method of  claim 1 , wherein the supervisory instructions comprise instructions to address operational anomalies including at least one of a stuck event, a motor stall, a kick, a bridge, and a coiled tubing equipment failure.  
     
     
         8 . The method of  claim 1 , wherein the evaluating further comprises: 
 estimating an underbalanced or managed pressure drilling indicator, a hole cleaning indicator, and a motor performance indicator based on the received downhole and surface sensor measurements; and    generating the coiled tubing drilling advisory, the generated coiled tubing drilling advisory including supervisory instructions to rig personnel to change at least one of the coiled tubing drilling operational parameters to maintain the under balance drilling indicator, the hole cleaning indicator, and the motor performance indicator within corresponding predetermined operating windows.   
     
     
         9 . The method of  claim 1 , wherein the evaluating further comprises: 
 estimating a nitrogen flow rate window for maintaining underbalanced drilling conditions based on the received downhole and surface sensor measurements;    comparing a nitrogen flow rate with the estimated nitrogen flow rate window; and   generating the coiled tubing drilling advisory, the generated coiled tubing drilling advisory including supervisory instructions to rig personnel to either increase or decrease the nitrogen flow rate when the nitrogen flow rate is outside of the estimated nitrogen flow rate window.    
     
     
         10 . The method of  claim 1 , wherein the generated coiled tubing drilling advisory includes instructions to the personnel to initiate a wiper trip or a tripping operation.  
     
     
         11 . A coiled tubing drilling supervisory control system comprising:  
       a processor in electronic communication with downhole sensors and surface sensors;  
       the processor configured to:  
       receive an input coiled tubing drilling configuration;  
       receive input coiled tubing drilling operational parameters;  
       receive sensor measurements from the downhole sensors and the surface sensors during a coiled tubing wellbore operation; and  
       evaluate the sensor measurements to generate a coiled tubing drilling advisory, the generated coiled tubing drilling advisories including supervisory instructions to rig personnel that provide supervisory oversight of the coiled tubing wellbore operation, the coiled tubing drilling advisories including at least one of instructions to meet operational targets, instructions to maintain the coiled tubing wellbore operation within standard operating procedures, and instructions to address operational anomalies. 
     
     
         12 . The supervisory control system of  claim 11 , wherein the supervisory control system is configured to implement the supervisory instructions automatically without human intervention. 
     
     
         13 . The supervisory control system of  claim 11 , wherein the supervisory instructions comprise instructions to meet operational targets including at least one of underbalanced or managed pressure drilling targets, hole cleaning targets, and drilling performance targets.  
     
     
         14 . The supervisory control system of  claim 11 , wherein the supervisory instructions comprise instructions to maintain the coiled tubing wellbore operation within standard operating procedures for at least one of a coiled tubing drilling operation, a wiper trip operation, a sidetracking operation, and a tripping operation.  
     
     
         15 . The supervisory control system of  claim 11 , wherein the supervisory instructions comprise instructions to address operational anomalies including at least one of a stuck event, a motor stall, a kick, a bridge, and a coiled tubing equipment failure.  
     
     
         16 . A method for advising a coiled tubing wellbore operation, the method comprising: 
 inputting a coiled tubing drilling configuration into a supervisory control system;    inputting coiled tubing drilling operational parameters into the supervisory control system;    receiving downhole and surface sensor measurements in the supervisory control system, the downhole and surface sensor measurements received from sensors deployed in a coiled tubing subsystem, a bottom hole assembly subsystem, and an underbalanced or managed pressure subsystem;    estimating an underbalanced or managed pressure drilling indicator, a hole cleaning indicator, and a motor performance indicator based on the received downhole and surface sensor measurements; and    evaluating the estimated underbalanced or managed pressure drilling indicator, the estimated hole cleaning indicator, and the estimated motor performance indicator to generate coiled tubing drilling advisories, the generated coiled tubing drilling advisories including supervisory instructions to rig personnel to change at least one of the coiled tubing drilling operational parameters in the coiled tubing subsystem, the bottom hole assembly subsystem, and the underbalanced or managed pressure subsystem to maintain the under balance drilling indicator, the hole cleaning indicator, and the motor performance indicator within corresponding predetermined operating windows.   
     
     
         17 . The method of  claim 16 , wherein the supervisory instructions further comprise instructions to maintain the coiled tubing wellbore operation within standard operating procedures for at least one of a coiled tubing drilling operation, a wiper trip operation, a sidetracking operation, and a tripping operation.  
     
     
         18 . The method of  claim 16 , wherein the supervisory instructions further comprise instructions to address operational anomalies including at least one of a stuck event, a motor stall, a kick, a bridge, and a coiled tubing equipment failure.  
     
     
         19 . The method of  claim 16 , further comprising: 
 estimating a nitrogen flow rate window for maintaining the underbalanced drilling conditions based on the received downhole and surface sensor measurements;    comparing a nitrogen flow rate with the estimated nitrogen flow rate window; and   generating a nitrogen advisory including instructions to personnel to either increase or decrease the nitrogen flow rate when the nitrogen flow rate is outside of the desired nitrogen flow rate window.    
     
     
         20 . The method of  claim 19 , wherein the generated nitrogen advisory comprises supervisory instructions to rig personnel to adjust the at least one of the coiled tubing drilling operational parameters to enable the nitrogen flow rate to be reduced.