勃利盆地致密油气形成条件及资源潜力研究

发布时间：2018-06-17 22:42

  本文选题：勃利盆地 + 致密油气　； 参考：《东北石油大学》2017年硕士论文

【摘要】：致密油气作为一种非常规油气已逐渐成为勘探开发的重点。勃利盆地位于佳木斯—伊通地堑东部,是中生界大三江含煤沉积盆地经后期改造后的残留盆地之一。从有效烃源岩、致密储层的发育情况及空间配置关系等各项指标均可证实,盆地内存在一定规模的致密油气。但是盆地油气勘探程度低,可用资料有限,致密油气资源潜力认识不清,有利区分布不明。本文针对上述问题,以勃利盆地致密油气资源潜力和有利区优选为研究重点,在现有研究的基础上,综合利用地震、测井、录井、岩心等资料,分析致密油气的形成条件,对勃利盆地的生储盖特征进行较为详细研究。研究结果表明,勃利盆地主要烃源岩层位为城子河组,有机质类型是Ⅱ~Ⅲ型,基本处于成熟阶段;储层为城子河组和穆棱组,岩性以低孔低渗的砂岩为主;城子河组及穆棱组的泥岩及凝灰岩是盆地内主要的盖层;生储盖组合配置良好。但由于盆地形成后经过了强烈的构造改造,油气的保存条件复杂,除区域盖层外,断裂对油气的保存也有重要的作用。依据致密油气成藏规律,按照“有生、有储、垂运、有保”四原则条件结合多因素叠合法优选油气有利区,优选出位于中部坳陷中南部的东西两侧的两个最有利区。最后在油气地质分析的基础上,综合利用生烃法、类比法和体积法对勃利盆地致密油气的资源量进行了估算,结果是油资源量为3521×104t,气资源量为322.7×108m3。
[Abstract]:As a kind of unconventional oil and gas, dense oil and gas has gradually become the focus of exploration and development. The Boli basin is located in the eastern part of Jiamusi-Yitong graben. It is one of the residual basins in the Mesozoic Dasanjiang coal-bearing basin after its later reformation. It can be proved from the effective source rocks, the development of tight reservoirs and the spatial distribution relationship that there is a certain scale of dense oil and gas in the basin. However, the oil and gas exploration degree in the basin is low, the available data is limited, the potential of dense oil and gas resources is not clear, and the distribution of favorable areas is unknown. In order to solve the above problems, this paper focuses on the potential of dense oil and gas resources and optimal selection of favorable areas in Boli Basin. On the basis of existing research, the formation conditions of dense oil and gas are analyzed by using seismic, logging, core and other data synthetically. The characteristics of reservoir and caprock in Boli Basin are studied in detail. The results show that the main source rock formations in the Boli Basin are Chengzihe formation, the organic matter type is type 鈪，

本文编号：2032751