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试井测试时关井时间不足 ;试井解释时 ,基础参数选用不合理 ,模型诊断不合理 ,是造成新民油田试井解释地层压力偏低的主要原因。指出了在现场测试时应采取井下关井 ,使井筒储集系数减小 ,在有效的时间内提前出现径向流 ;在试井解释中应选用合理的基础参数 ,正确进行模型诊断。并利用沉积微相 ,根据生产动态 ,结合地质状况对地层压力进行综合分析。
Well testing time shut-in time is not enough; Interpretation of the well test, the selection of basic parameters unreasonable, the model diagnosis is unreasonable, is caused by Xinmin Oilfield well test interpretation of the main reason for low formation pressure. It is pointed out that in the field test, the well should be closed downhole so that the wellbore storage coefficient decreases and radial flow appears ahead of schedule in an effective time. Reasonable basic parameters should be selected for well test interpretation to correctly diagnose the model. And using sedimentary microfacies, according to production dynamics, combined with the geological conditions of the formation pressure for a comprehensive analysis.