Volume method is recommended to be used to calculate the resources of Klqn1 shale gas in Qijia-Gulong depression. The geochemical index and the characteristic of the mud shale,overall evaluation shale gas containing in the purpose layer are analysied. The improved △lgR logging identification technology on the target horizon for TOC heterogeneity evaluation, obtain Qijia-Gulong depression 59 wells continuous calculating TOC value was using, Then according to the relation of TOC and shale gas content, the shale gas content in perpose layer was forecasted. After make sure other related parameters, reference core area of shale gas division standard, divide the core area in Qijia-Gulong depression and calculate the core area shale gas resource are presened. Based on relevant data, after analysis and prediction show that: Qijia-Gulong depression developed dark shale, the shale have high organic matter, good types, core area of shale gas mainly concentracted in Gulong sag, the area is about 840 km2, have big formation thickness, high maturity, geological resource is about 3 960. 71 × 108 m3 ,has good shale gas exploration prospect.%运用体积法对齐家-古龙凹陷青一段页岩气进行资源潜力评价.对目的层泥页岩的各项地球化学指标、泥页岩含气特征进行分析,总体评价目的层泥页岩含气性.利用改进后的△lgR测井识别技术对目标层位进行TOC非均质性评价,得到齐家-古龙凹陷内59口井的连续计算TOC值,继而依据TOC与含气量的关系,预测目的层含气量,在确定体积法其他相关参数后,参照页岩气有利区划分标准划分出齐家-古龙凹陷青一段页岩气有利区并计算有利区内页岩气资源量.通过对相关资料的整理分析预测可知:齐家-古龙凹陷泥页岩发育,有机质丰度高,类型好,页岩气有利区主要集中于古龙凹陷,面积约为840 km2,地层厚度大,成熟度高,地质资源量约为3 960.71×108 m3,具有较好的页岩气勘探前景.
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