The GeoClassifier® algorithm can detect operational problems in reports, documents, logs and other forms of unstructured text. Machine learning (neural networks) is used for prediction, complementing the existing machine learning model in GeoClassifier® which detects well / borehole names without using a prior list of names. These can be used to support oil & gas, mining, renewables, carbon capture & storage (CCS), geothermal and hydrogeology sectors.