页岩气开发作为国家“十三五”重要的能源发展计划,迫切需要建立相应的储层评价指标和标准,对储层进行完整性评价。目前，国内针对陆相页岩气储层特征及评价的研究工作开展得相对较少,在大量调研国外文献的基础上,参考北美、国内海相和陆相已有的储层评价标准,得出精细评价需考虑的重要参数。室内根据中国陆相页岩储层沉积埋藏特征,对埋藏和厚度、生烃能力和储集性能等影响因素进行分析,建立了陆相页岩气储层评价标准,完成页岩气储层单井综合评价。现场选取了延长地区YYP1井和YYP2井两口水平井,对该区页岩气进行了综合评价和对比分析,认为延长地区中生界长7段具有很好的页岩气勘探与开发前景。该标准的提出为延长油区陆相页岩气的深入勘探提供了重要参考,同时为国内类似页岩气区块的储层评价研究提供了技术借鉴。

Corresponding evaluation indicators and standards need to be established for shale gas development as an important energy development plan for the country's 13th Five-Year Plan.However，at present, domestic research work on the characteristics and evaluation of terrestrial shale gas reservoirs is relatively rare. Based on a large number of foreign literatures, the existing reservoir evaluation criteria in North America, China Marine and Terrestrial are referenced, and important parameters to be considered for detailed evaluation are obtained. According to the sedimentary burial characteristics of terrestrial shale reservoirs in China, the evaluation parameters such as burial and thickness, hydrocarbon generation capacity and reservoir performance are analyzed, and the evaluation criteria of terrestrial shale gas reservoirs are established to complete the single well synthesis of shale gas reservoirs. Two horizontal wells, YYP-1 well and YYP-2 well, were selected in the Yanchang oilfield for comprehensive evaluation and comparative analysis of shale gas in this area. It is believed that the Chang 7 section of the Mesozoic group in this area has good shale gas exploration and development prospects.The proposed standard provides an important guiding role for extending the deep exploration of terrestrial shale gas in the oilfield, and gives a technical reference for the reservoir evaluation of similar shale gas blocks in China.