本文以埕北258井为例,通过该井地质勘探成果的得失,系统分析本井沙河街组勘探落空的具体原因。并以此为鉴,对进一步的油气勘探的井位部署和现场生产中,提供一些建设性的建议。 In this paper, the case of 埕 Bei 258 well is taken as an example to analyze systematically the specific reasons for the exploration and emptiness of the Shahejie formation in Benjing through the pros and cons of the geological prospecting results of the well. And take this as a reference, to provide some constructive suggestions for further well deployment and on-site production of oil and gas exploration.