Owing to the high value of trading goods and equipment the oil and gas industry needs, this market has always been particularly attractive for marketers. For this reason, this applied research was conducted in a mixed manner to use the results to develop the purchase strategy of oil companies as well as develop the marketing strategy of companies active in the field of selling goods and equipment needed by the oil industry. It was tried to identify and prioritise purchasing indicators using the fuzzy Delphi method. Also, the data of the research was collected by two methods of interview and questionnaire from the statistical sample of the research, who were purposefully selected from among the experts engaged in purchasing goods of major Iranian oil and gas companies. In the end, after analysing the data, 18 indicators were identified as effective indicators on the purchase of goods by these experts. After prioritisation, the technical ability of the producer or supplier of goods was identified as the most critical indicator in this field.
