松辽盆地齐家地区致密油成藏条件研究

发布时间：2018-04-21 19:28

本文选题：齐家凹陷 + 源储组合　；参考：《东北石油大学》2017年硕士论文

【摘要】：致密油是常规油气资源的重要补充,其成藏机理和主控因素与常规油有所区别。通过对松辽盆地齐家致密油区38口取心井的观察描述,结合197口井近1500块岩样的有机地球化学实验数据,依据岩性表征和地球化学特性将源岩划分为两类,青一段以一类源岩为主,符合“下泥上砂”的临源型接触关系,青二、三段以二类源岩为主,垂向上从“泥包砂”向“砂包泥”互层型接触关系逐渐过渡。利用生烃潜量法、化学动力学法定量判定齐家青山口组致密油油源归属问题,同时结合盆地模拟技术判定源岩成藏与储层致密化的时空匹配关系,提出三种针对不同源储组合类型的油气运聚模式,结合前人研究成果,总结齐家致密油区油气运移规律,认为齐家青二、三段致密油以源内生排烃或下伏青一段临源排烃为主,青一段源岩生成的油气会沿活动断层发生二次运移。在青二、三段临断裂砂体聚集。在此基础上,结合储层物性、岩相、地层超压、断裂分形指数等多种成藏影响因素分析结果,落实致密油有利聚集区。
[Abstract]:Compact oil is an important supplement to conventional oil and gas resources, and its reservoir formation mechanism and main controlling factors are different from conventional oil. Based on the observation and description of 38 coring wells in Qijia tight oil area of Songliao Basin, combined with the organic geochemical experimental data of nearly 1500 rock samples from 197 wells, the source rocks are classified into two categories according to their lithologic characterization and geochemical characteristics. The first member of the formation is dominated by the first type of source rock, which accords with the contact relation of "bottom mud on sand", and the second and third member of Qing Dynasty is mainly of the second type of source rock, and the vertical transition from "mud-wrapped sand" to "sand and mud" interbedded contact relationship is gradually transferred. Using hydrocarbon generation potential method and chemical kinetics method to determine the attribution of tight oil source in Qijiaqingshankou formation, and combining with basin simulation technology to determine the space-time matching relationship between source rock formation and reservoir densification. Three types of hydrocarbon migration and accumulation models for different types of reservoirs and assemblages are proposed. Combined with previous research results, the oil and gas migration laws in Qijia dense oil area are summarized. It is considered that the main source and hydrocarbon expulsion mechanism of the second and third sections of Qijia-Qing oil is endogenous hydrocarbon expulsion or temporary hydrocarbon expulsion from the first member of Xiafuqing formation. The oil and gas generated by the source rock of Qingyi formation can be transported twice along the active fault. The sand bodies in the second and third sections of Qingqing are gathered near the faulted sand bodies. On this basis, combined with the reservoir physical properties, lithofacies, formation overpressure, fracture fractal index and other reservoir formation factors analysis results, the implementation of dense oil favorable accumulation area.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13

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