What quality controls are in place to ensure accuracy of the data?
The data submitted for each well, or for each completion, is subject to over 400 automated checks for its ‘internal integrity’. This automatic checking process will raise a query for data that is missing, illogical, falls outside the ‘norms’ or incompatible with other data provided for the well or completion. These queries are then individually examined by our data processing staff to determine which need to be referred back to the participant for resolution. The data provided in spreadsheet form is then also checked manually against the time-depth chart or completion schematic diagrams which may also raise queries. Calculated cost or time data, such as cost per metre or metres per day, that falls outside the usual performance norms without apparent reasons being present, are also queried. A list of queries is then sent to the participant. When a response is received the amended data is then re-checked thoroughly and any new or unanswered queries returned to the participant until all q
