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虽然平衡钻井越来越受到勘探工作的重视,但吉林伊通探区因独特而复杂的地质条件,仍以过平衡钻井为主。该文对过平衡钻井状态下气测录井的影响因素进行分析,并对过平衡状态下气测录井资料的使用作简要探讨,采用气泡图的形式,建立伊通地堑过平衡钻井状态下气测异常评价图版,以提高过平衡钻井状态下油气层解释符合率,促进压力检测和预报工作的开展,推动平衡钻井技术在吉林探区的推广。
Although balanced drilling is increasingly valued by exploration work, the Yitong exploration area in Jilin is still dominated by overbalanced drilling because of its unique and complicated geological conditions. In this paper, the influencing factors of gas logging under over-balanced drilling are analyzed, and the use of gas logging data under over-balanced conditions is briefly discussed. By means of bubble chart, the over-balanced drilling conditions Gas measurement anomaly map to improve the interpretation of coincidence rate of oil and gas formations under over-balanced drilling, promote the work of pressure detection and prediction, and promote the popularization of balanced drilling technology in Jilin Exploration Area.