湖相烃源岩生烃动力学及排油效率——以松辽盆地青山口组为例

发布时间：2018-11-07 10:27

【摘要】：为准确评价湖相烃源岩的排油量及致密油资源潜力,结合湖相I型有机质的黄金管热模拟实验和青山口组烃源岩的有机地球化学分析,对松辽盆地湖相烃源岩生烃特征、动力学参数和排油效率进行了研究。热模拟实验的产物定量结果表明,松辽盆地青山口组湖相烃源岩具有可观的生油潜力,最大生油量约为600 mg/g·TOC,主要的生油阶段在Easy Ro=0.5%~1.2%。动力学计算结果表明,该烃源岩生油的平均活化能为218.5 k J/mol,重质组分生成活化能要低于轻质组分。结合青山口组烃源岩的生油动力学参数和英X58井热史的地质推演,证实该井湖相烃源岩的当前生油转化率为40%~60%,生油量为240~360 mg/g·TOC;通过残留烃的定量,计算得到该烃源岩的排油量为150~200mg/g·TOC,相对排油效率约为60%。生油量及排油效率结果表明,松辽盆地致密油资源潜力大。
[Abstract]:In order to evaluate accurately the oil discharge and tight oil resource potential of lacustrine source rocks, the hydrocarbon generation characteristics of lacustrine source rocks in Songliao Basin were analyzed in combination with the gold tube thermal simulation experiment of lacustrine I organic matter and the organic geochemistry analysis of source rocks of Qingshankou formation. Kinetic parameters and oil removal efficiency were studied. The quantitative results of thermal simulation experiments show that the lacustrine source rocks of Qingshankou formation in Songliao Basin have considerable oil generation potential, and the maximum oil generation is about 600 mg/g TOC, during the main oil generation stage in Easy Ro=0.5%~1.2%.. The results of kinetic calculation show that the average activation energy of the source rock is 218.5 kJ / mol, and the activation energy of heavy component formation is lower than that of light component. Combined with the oil generation kinetic parameters of the source rock of Qingshankou formation and the geological deduction of the thermal history of YingX58 well, it is proved that the current oil generation conversion rate of the source rock in the lake facies of the well is 400.60 and the oil production is 240 ~ 360 mg/g TOC;. Through the quantitative analysis of residual hydrocarbon, it is calculated that the oil discharge of the source rock is about 60% of the relative oil removal efficiency of 150~200mg/g TOC,. The results of oil generation and oil discharge efficiency show that the Songliao Basin has a great potential for dense oil resources.
【作者单位】：中国矿业大学(北京)煤炭资源与安全开采国家重点实验室;中国矿业大学(北京)地球科学与测绘工程学院;中国石油勘探开发研究院;中国石油油气地球化学重点实验室;
【基金】：国土资源部公益性行业科研专项基金项目(201311022) “十二五”国家科技重大专项(2011ZX05007-001,2011ZX05007-002) 教育部高等学校博士学科点基金项目(20110023110017) 中国石油天然气股份有限公司科学研究与技术开发项目(2012E-2603-06)
【分类号】：P618.13

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