Rig task management

Abstract

Systems and methods for performing subterranean operations include receiving a digital rig plan which comprises a sequence of at least a subset of available rig tasks for a rig, executing a rig task in the digital rig plan that involves a fluid, monitoring at least one parameter of the fluid during execution of the rig task, and continuing or stopping the rig task based on the monitoring of the at least one parameter of the fluid.

1 . A method of performing a subterranean operation, comprising:
 receiving a digital rig plan, at a rig controller, which comprises a sequence of at least a subset of available rig tasks for a rig;   executing, via the rig controller, a rig task in the digital rig plan that involves a fluid;   monitoring, via one or more sensors, at least one parameter of the fluid during execution of the rig task; and   continuing or stopping the rig task based on the monitoring of the at least one parameter of the fluid.   
     
     
         2 . The method of  claim 1 , wherein the one or more sensors are communicatively coupled to the rig controller. 
     
     
         3 . The method of  claim 1 , wherein the one or more sensors comprise a fluid rheology sensor, a pressure sensor, a temperature sensor, an environmental sensor, or a combination thereof. 
     
     
         4 . The method of  claim 1 , wherein the at least one parameter of the fluid comprises a flow rate of the fluid, a pressure of the fluid, a temperature of the fluid, a chemical composition of the fluid, a presence or lack of presence of a particular chemical or substance in the fluid, a presence or lack of presence of solids in the fluid, a wellbore pressure, or a combination thereof. 
     
     
         5 . The method of  claim 1 , wherein continuing the rig task occurs in response to the at least one parameter of the fluid not being at a predetermined value. 
     
     
         6 . The method of  claim 1 , wherein continuing the rig task comprises no change to the digital rig plan. 
     
     
         7 . The method of  claim 1 , wherein continuing the rig task comprises adjusting one or more operational parameters of the digital rig plan. 
     
     
         8 . The method of  claim 1 , wherein the digital rig plan is modified to create a modified rig plan based on the monitoring of the at least one parameter of the fluid, and wherein the continuing the rig task comprises proceeding with execution of the modified rig plan. 
     
     
         9 . The method of  claim 1 , wherein the stopping the rig task occurs in response to the at least one parameter of the fluid being at a predetermined value. 
     
     
         10 . The method of  claim 9 , wherein the stopping the rig task causes the rig controller to proceed to executing a next rig task in the digital rig plan. 
     
     
         11 . The method of  claim 1 , wherein the stopping the rig task is implemented automatically by the rig controller, implemented manually by an operator of the rig controller, implemented interactively between the rig controller and the operator, or a combination thereof. 
     
     
         12 . A method of performing a subterranean operation, comprising:
 receiving a digital rig plan which comprises a sequence of at least a subset of available rig tasks for a rig;   executing a rig task in the digital rig plan that involves a fluid;   monitoring at least one parameter of the fluid during execution of the rig task; and   adjusting the digital rig plan based on the monitoring of the at least one parameter of the fluid.   
     
     
         13 . The method of  claim 12 , further comprising:
 comparing an actual value of the at least one parameter of the fluid to an expected value in the digital rig plan.   
     
     
         14 . The method of  claim 13 , further comprising:
 adjusting the fluid to cause the actual value of the at least one parameter to substantially equal the expected value.   
     
     
         15 . The method of  claim 14 , further comprising:
 stopping the rig task until the actual value substantially equals the expected value; and   resuming the rig task after the actual value substantially equals the expected value.   
     
     
         16 . The method of  claim 15 , wherein the fluid is being pumped into a tubular string in a wellbore, wherein the at least one parameter is at least one of:
 a mud weight of the fluid;   a pressure of the fluid in the wellbore;   a viscosity of the fluid;   a concentration of a treatment in the fluid; and   a combination thereof.   
     
     
         17 . The method of  claim 13 , wherein the comparing of the actual value with the expected value indicates that an event in a wellbore has occurred, is occurring, or will occur. 
     
     
         18 . The method of  claim 17 , wherein the event is at least one of:
 a spike in pressure in the wellbore;   a drop in the pressure in the wellbore;   a build-up of cuttings;   gas influx into the wellbore;   gas present in the cuttings;   fluid loss into the wellbore;   low fluid level in the wellbore; and   a combination thereof.   
     
     
         19 . The method of  claim 17 , further comprising:
 creating a modified digital rig plan by adjusting the digital rig plan to manage the event, via adjusting one or more rig tasks, adding one or more rig tasks, deleting one or more rig tasks, or combinations thereof.   
     
     
         20 . The method of  claim 19 , further comprising:
 executing the modified digital rig plan to manage the event.