When compared with exploration drilling statistics, such as those reported annually by the AAPG Committee on Statistics of Drilling (CSD), ''P''<sub>s</sub> was approximately equivalent to their definition of ''success,'' that is, that the subject well was completed and did produce some hydrocarbons. ''This does not mean that the venture was profitable.'' In fact, this definition of success contains at least four possible outcomes: | When compared with exploration drilling statistics, such as those reported annually by the AAPG Committee on Statistics of Drilling (CSD), ''P''<sub>s</sub> was approximately equivalent to their definition of ''success,'' that is, that the subject well was completed and did produce some hydrocarbons. ''This does not mean that the venture was profitable.'' In fact, this definition of success contains at least four possible outcomes: |