A method comprising: acquiring data associated with and during a drilling operation in a geologic environment, wherein the data comprises at least one of depth series data, length of trajectory series data and/or time series data relating to the drilling operation; automatically processing the data by partitioning operationally and representing symbolically, wherein the partitioning isolates sections of the data based on likelihood of execution of different standard operating procedure specifications,SOPs, wherein the SOPs define sequences of drilling operations, with associated parameter ranges and expected outcomes, to achieve execution goals; formulating a symbolic query for one of the standard operating procedure specifications; performing a search of the symbolically represented data of one or more of the sections utilizing the symbolic query and a probabilistic chain model that represents the one of the standard operating procedure specifications; receiving a search result responsive to the search; assessing compliance of the field operation with the one of the standard operation procedure specifications utilizing the search result; and automatically issuing a control signal, during the drilling operation to field equipment utilizing the assessment of compliance the control signal being configured to cause improved compliance of drilling operations with the one of the standard operation procedure specifications. acquiring data associated with and during a drilling operation in a geologic environment, wherein the data comprises at least one of depth series data, length of trajectory series data and/or time series data relating to the drilling operation; automatically processing the data by partitioning operationally and representing symbolically, wherein the partitioning isolates sections of the data based on likelihood of execution of different standard operating procedure specifications,SOPs, wherein the SOPs define sequences of drilling operations, automatically processing the data by partitioning operationally and representing symbolically, wherein the partitioning isolates sections of the data based on likelihood of execution of different standard operating procedure specifications,SOPs, wherein the SOPs define sequences of drilling operations, with associated parameter ranges and expected outcomes, to achieve execution goals; formulating a symbolic query for one of the standard operating procedure specifications; performing a search of the symbolically represented data of one or more of the sections utilizing the symbolic query and a probabilistic chain model that represents the one of the standard operating procedure specifications; receiving a search result responsive to the search; assessing compliance of the field operation with the one of the standard operation procedure specifications utilizing the search result; and automatically issuing a control signal, during the drilling operation to field equipment utilizing the assessment of compliance the control signal being configured to cause improved compliance of drilling operations with the one of the standard operation procedure specifications. formulating a symbolic query for one of the standard operating procedure specifications; performing a search of the symbolically represented data of one or more of the sections utilizing the symbolic query and a probabilistic chain model that represents the one of the standard operating procedure specifications; receiving a search result responsive to the search; assessing compliance of the field operation with the one of the standard operation procedure specifications utilizing the search result; and automatically issuing a control signal, during the drilling operation to field equipment utilizing the assessment of compliance the control signal being configured to cause improved compliance of drilling operations with the one of the standard operation procedure specifications.