A method for measuring technical maturity index (TMI) for oilfield operations of an oilfield, the oilfield having a subterranean formation with geological structures and reservoirs therein. The method includes sending an assessment including a listing of a number of capabilities to at least one user associated with a first oilfield operation, where each of the number of capabilities is associated with a technology for the oilfield operations, and receiving a first number of responses in response to the assessment for the first oilfield operation, where each of the first number of responses specifies one of the number of capabilities and a level of adoption corresponding to the one of the number of capabilities. The method further includes obtaining a TMI for the first oilfield operation using the first number of responses and presenting the TMI for the first oilfield operation.