松辽盆地南部剩余资源以扶余油层源下致密油为主，资源量大，直井产量低、技术不配套、效益动用难，深入开展致密油研究对松辽盆地剩余油气资源开发意义重大。通过深化扶余油层岩性油藏分布规律研究，形成扶余油层“满凹含油”的深盆油藏、致密油认识，建立“三位一体”成藏模式(上生下储、超压排烃、倒灌成藏)，并在这一模式的指导下，突破了扶余油层物性下限，展现扶余油层致密油良好潜力；开展致密油“甜点”评价标准研究，形成致密油甜点综合评价技术(有效砂体地震预测技术、测井“七性”评价技术、多参数甜点评价技术)，推动了致密油效益开发；建立乾安致密油试验区，完钻水平井150口，累计产原油31.5×104t，单井日产油较设计高出15%，开发效果超出预期；松辽盆地南部致密油评价及开发关键技术体系的建立，为盆地油气资源持续效益开发提供有效技术保障，也为国内致密油评价与开发提供了借鉴.
The remaining resources in the southern Songliao Basin are mainly tight oil from the Fuyu reservoir source，with large resources，low vertical well production，unmatched technologies and difficult utilization of benefits.Therefore，it is of great significance to carry out in-depth tight oil research for the development of the remaining oil and gas resources in the Songliao Basin.Through deepening the research on Fuyu reservoir lithologic reservoir distribution，understanding is obtained about a total of more than reservoir “full sunken with oil” deep basin reservoir and tight oil.A “trinity” accumulation mode is established(upper generation and below perservation，overpressurized hydrocarbon expulsion，flow backward accumulation)，and under the guidance of this knowledge，breakthrough was made for lower limit of physical property of the Fuyu oil layer，showing good potential.Research about the evaluation standard of tight oil “sweet area” was carried out，forming comprehensive evaluation method for the tight oil sweet area(effective sand body prediction technology，“seven-feature” evaluation method for well logging，multi-parameter dessert evaluation method).It promoted the tight oil efficient development.Qianan tight oil test area was established，and 150 horizontal wells were drilled，which has accumulative oil production of 31.5×104t crude oil.The single parallel oil production is 15% higher than the design，and the development effect is beyond the expectation.The establishment of the key technical system for tight oil evaluation and development in the southern Songliao Basin provides effective technical support for the sustained and beneficial development of oil and gas resources in the basin，which provides a reference for the evaluation and development of tight oil in China.
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