摘要
水驱采油后期,油层的含水率越来越高,然而大量的可动剩余油却滞留于地下。要提高这部分油层的采收率,必须加强对储层微观非均质性的认识。精细地质研究作为一种方法,在这种背景下,便得到了快速的发展和应用。旨在对其做一个阶段性的小结,从储集层砂体几何形态、内部结构以及孔、渗空间变化特征出发,概述了精细地质研究的内容为细化开发单元、成因单元砂体的连续性和连通性描述、砂体内部建筑结构单元的划分、流动单元的研究、表外储层研究、地质建模等。并提出了今后研究发展的主要方向。为油田的可持续发展提供技术支持。
At the later stage of water-driven exPloitation, some problems appeared, one is the high water content in the oil strata, and the other-is a great deal of surplus oil detained in the strata. To enhance recovery ratio, it is necessary to have a better understand on the micro-heterogeneity of reservoir. As a measure to resolve these problems, the study of fine geology gets along very well. Based on the geometric features of reservoir, structure and the spatial variation of bore-seepage, this paper carries out the following six aspects： ①accurate division of exploitation units; ②description of continuity of genetic unit; ③division of internal structure unit of sand-body; ④ investigation of flow unit of reservoir; ⑤research of outside delimited reservoir; ⑥geologic modeling. At last, three developing trends of fin geology are put forward to afford some ideas for the future researches. So it will offer some effective technologies for the sustainable development of oilfield.
出处
《地球科学与环境学报》
CAS
2006年第2期58-64,共7页
Journal of Earth Sciences and Environment
基金
中国科学院边缘地质重点实验室基金项目(MSGL04-3)
关键词
精细地质
成因单元
结构单元
流动单元
表外储层
综述
fine geology
genetic unit
structure unit
flow unit
outside delimited reservoir
review
