渤海二次勘探成效分析

An result analysis for the second round of petroleum exploration in Bohai Bay

油气勘探是一个反复认识、反复实践的过程。随着新理论的产生、新技术的出现和更多高品质资料的获得,石油勘探家的认识不断深化,勘探成效不断提高。在渤海油区早期勘探中,受理论、技术和资料所限,一些探井并非位于最佳部位;因构造、储层、油气运移等预测不准确及测试技术落后而没能及时发现厚油层,获得商业性产能。近几年来,通过再次分析、重新预探,发现了一大批大、中型油气田;但有的探井录取资料太少,导致再次分析得出错误认识,致使重新勘探再次失利。这些经验和教训值得勘探家们认真总结,以指导下一步的室内研究和海上作业。

Petroleum exploration is a continuous process of repeated recognition and practice.Petroleum explorers would continuously deepen their recognition and expand the exploration effects, with the emergences of new concepts and technologies and the availability of more high-quality data. During the early exploration in Bohai Bay, some exploratory wells were not at the optimal locations due to limits of theoretical concept,technology and data, and thicker oil pays were not discovered timely to get commercial productivity because of inaccurate prediction of structure, reservoir and hydrocarbon migration and because of our backward testing technology. In recent years,however, a great number of large- and mediumsized oil and gas fields are discovered by a repeated analysis and pre-exploration. But limited data acquired in some exploratory wells has also resulted in wrong ideas from the repeated analysis, making the repeated exploration fail again in some cases.All theses experiences and lessons should be carefully summarized and learned, which are useful to directing further studies and offshore operations.