辽河坳陷沙三段火山岩岩性比较混杂,难以鉴别。由于火山岩是该地区主要的油气储集层,因此火山岩的岩性鉴别尤为重要。从区域地质资料分析入手,应用录井资料鉴别岩性,总结了火山岩录井特征,形成了现场录井确定火山岩岩性的方法。实际应用效果表明,该方法不仅可卡准粗面岩储集层界面,降低钻井工程作业风险,保护油气层,而且使完井后录井综合图火山岩岩性得以精细归位,为油田勘探开发研究提供了可靠的依据。 The lithology of volcanic rocks in the third member of Liaohe Depression is quite mixed and difficult to identify. Lithology identification of volcanic rocks is especially important because volcanic rocks are the major oil and gas reservoirs in the area. Based on the analysis of regional geological data, the logging data are used to identify the lithology, the characteristics of volcanic logging are summarized, and the method of determining the lithology of volcanic rock by field logging is formed. The practical application results show that this method can not only identify the interface of the crude rock reservoir, reduce the risk of drilling operation and protect the hydrocarbon reservoir, but also finely locate the lithology of volcanic rocks after the completion of well logging, Research provides a reliable basis.