Methods To Estimate And Alter The Real-Time Wellbore Friction Coefficient For Reduction In Heat Generation

Abstract

A drillstring, in a drilling environment, operatively connected to an information handling system, where the information handling system is configured to perform a method for modifying drilling operations that includes obtaining measured drillstring data associated with the drillstring, and calculating a heat generation using the measured drillstring data, where, based on the heat generation, a drilling modification procedure is performed.

What is claimed is: 
     
         1 . A method for modifying drilling operations, comprising:
 obtaining first measured drillstring data associated with a drillstring;   generating first calculated drillstring data based on the first measured drillstring data; and   performing a first drilling modification procedure based on the first calculated drillstring data.   
     
     
         2 . The method of  claim 1 , wherein:
 the first measured drillstring data comprises a first measured torque, and   the first calculated drillstring data comprises a first friction factor, wherein the first friction factor is calculated using the first measured torque.   
     
     
         3 . The method of  claim 2 , wherein after generating the first calculated drillstring data, the method further comprises:
 making a first determination to perform the first drilling modification procedure based on the first friction factor exceeding a friction threshold.   
     
     
         4 . The method of  claim 3 , wherein after the first drilling modification procedure is performed, the method further comprises:
 obtaining second measured drillstring data associated with the drillstring, including a second measured torque; and   generating second calculated drillstring data based on the second measured drillstring data.   
     
     
         5 . The method of  claim 4 , wherein generating the second calculated drillstring data comprises calculating:
 a second friction factor using the second measured torque;   a heat generation based on the second measured torque; and   a hypothetical heat generation based on the first friction factor and the second friction factor.   
     
     
         6 . The method of  claim 5 , wherein after generating the second calculated drillstring data, the method further comprises:
 calculating a reduction in heat generation using a difference between the heat generation and the hypothetical heat generation; and   making a second determination that the reduction in heat generation surpasses a heat reduction threshold.   
     
     
         7 . The method of  claim 5 , wherein after generating the second calculated drillstring data, the method further comprises:
 calculating a reduction in heat generation using a difference between the heat generation and the hypothetical heat generation;   making a second determination that the reduction in heat generation does not surpass a heat reduction threshold; and   performing a second drilling modification procedure based on the second determination.   
     
     
         8 . The method of  claim 7 , wherein after performing the second drilling modification procedure, the method further comprises:
 obtaining third measured drillstring data associated with the drillstring, including a third measured torque; and   generating third calculated drillstring data based on the third measured drillstring data.   
     
     
         9 . The method of  claim 8 , wherein generating the third calculated drillstring data comprises calculating:
 a third friction factor using the third measured torque;   a second heat generation based on the third measured torque; and   a second hypothetical heat generation based on the first friction factor and the third friction factor.   
     
     
         10 . The method of  claim 9 , wherein after generating the third calculated drillstring data, the method further comprises:
 calculating a second reduction in heat generation using a second difference between the second heat generation and the second hypothetical heat generation; and   making a third determination that the second reduction in heat generation surpasses the heat reduction threshold.   
     
     
         11 . A method for modifying drilling operations, comprising:
 obtaining measured drillstring data associated with a drillstring;   calculating a heat generation using the measured drillstring data; and   performing a drilling modification procedure based on the heat generation.   
     
     
         12 . The method of  claim 11 , wherein the heat generation is caused by a rotation of the drillstring in a borehole. 
     
     
         13 . The method of  claim 12 , wherein calculating heat generation comprises:
 calculating a friction factor between the drillstring and the borehole.   
     
     
         14 . The method of  claim 13 , wherein:
 the measured drillstring data comprises a measured torque applied to the drillstring, and calculating the friction factor uses the measured torque.   
     
     
         15 . The method of  claim 13 , wherein the borehole comprises a plurality of borehole sections. 
     
     
         16 . The method of  claim 15 , wherein a plurality of measured torques is calculated for each of the plurality of borehole sections, respectively. 
     
     
         17 . The method of  claim 16 , wherein a plurality of heat generations is calculated for each of the plurality of borehole sections based on the plurality of measured torques, respectively. 
     
     
         18 . The method of  claim 13 , wherein the method further comprises:
 stopping the drilling modification procedure based on a second heat generation based on a second friction factor.   
     
     
         19 . The method of  claim 18 , wherein stopping the drilling modification procedure is further based on a hypothetical heat generation based on the friction factor. 
     
     
         20 . A drillstring, in a drilling environment, operatively connected to an information handling system, wherein the information handling system is configured to perform a method for modifying drilling operations, comprising:
 obtaining measured drillstring data associated with the drillstring; and   calculating a heat generation using the measured drillstring data,   wherein, based on the heat generation, a drilling modification procedure is performed.