摘要
鉴于砂岩底水油藏开采特征有别于一般油藏,底水中蕴藏着丰富的天然能量,在底水油藏的开发过程中,随着开采的进行,底水起动力作用,油水界面会不断升高,从而达到驱替原油的目的。同时,底水的锥进,使油井过早水淹,产油量降低。因此,有必要研究砂岩底水油藏的开采特征及其影响因素,为合理的开发砂岩底水油藏提供指导。利用三维三相黑油模型数值模拟方法,研究了不同渗透率、夹层半径、储层沉积韵律、采液速度对砂岩底水油藏开采效果的影响。研究表明:影响底水锥进的主要因素是渗透率、夹层半径和采液速度。该项研究对于非均质底水油藏的开发具有一定的指导意义。
For the reason that the exploitation characteristics of sandstone bottom water reservoirs are different from the general ones and the bottom water has abundant natural energy, in the development process, along with the recovery, the bottom water plays a role in motivation with the increasing oil-water interface to achieve the target of displacement. Meanwhile, bottom water coning leads to untimely water breakthrough and oil production decrease. Therefore, the recovery characteristics and influencing factors of sandstone bottom water reservoirs are needed to be researched to provide guidance for the reasonable development. By using 3D and three phase black oil numerical model, the influences of different permeability, interlayer radius, reservoir sedimentary rhythm and fluid recovery velocity on sandstone bottom water reservoirs are studied. The study shows that the main factors of bottom water coning are permeability, interlayer radius and fluid recovery velocity. The study has guiding significance to the development of the heterogeneous bottom water reservoir.
出处
《油气藏评价与开发》
2013年第6期24-27,71,共5页
Petroleum Reservoir Evaluation and Development
基金
国家科技重大专项(2011ZX050102003)资助
关键词
夹层
底水油藏
底水锥进
产量
含水率
interlayer, bottom water reservoir, bottom water coning, production, water cut
