W油田特高含水阶段水驱开发指标变化规律研究

发布时间：2018-08-09 20:15

【摘要】：目前我国大部分油田已经进入了开发的中后期阶段,这个时期的剩余可采储量减少、开采的难度增加,为了达到增产、稳产的目的,油田会对部分井进行实施措施。随着开采难度加大,油田如何优化措施工作量,能够获得更好的经济效益和完成产量成为现在的重要问题。近几年来,W油田从部分高含水全面进入到高含水、高采出程度的阶段,面临着储采基本平衡向严重不平衡过渡的严峻形势。因此,加强各井网递减规律的研究,对剩余油的预测,提高采收率都具有重要的现实意义。本文利用图解法、试差法、曲线位移法、典型曲线拟合法及二元回归方法等手段综合判定不同井网的产量递减类型,并计算各套井网的产量递减率。水驱油田的含水率是油田开发中受多方面因素影响的一个综合指标,它既反映油层及原油物性对油层中油水运动规律的制约,也反映开采过程中多种技术措施的效果。含水上升规律与含水率之间有着密切联系。通过评价W油田特高含水阶段各套井网的含水上升率水平,对比各套井网之间的差别,从而分析造成这种差别的地质及开发因素。最后本文运用联解法、产量构成分析法、多元回归法等对W油田特高含水阶段各套水驱井网开发指标进行预测。
[Abstract]:At present, most oil fields in China have entered the middle and late stage of development. In this period, the remaining recoverable reserves are reduced, and the difficulty of exploitation is increased. In order to achieve the purpose of increasing production and stabilizing production, the oilfield will carry out measures to implement some wells. With the increase of production difficulty, how to optimize the workload of oil field measures, to obtain better economic benefits and to complete production has become an important issue. In recent years, the oil field of Gui W has entered the stage of high water cut and high recovery from part of high water cut to high water cut, and is faced with the severe situation of the transition from the basic balance of storage and production to the serious imbalance. Therefore, it is of great practical significance to strengthen the study of the decline law of each well pattern, to predict the remaining oil and to improve the oil recovery. In this paper, graphical method, trial difference method, curve displacement method, typical curve fitting method and binary regression method are used to comprehensively determine the production decline types of different well patterns, and to calculate the production decline rate of each well pattern. Water cut in water drive oilfield is a comprehensive index affected by many factors in oilfield development. It not only reflects the restriction of reservoir and crude oil physical properties on oil and water movement in reservoir, but also reflects the effect of various technical measures in the process of production. There is a close relationship between the law of water cut rise and water content. By evaluating the level of water cut rise rate of each well pattern in the very high water cut stage of W Oilfield and comparing the differences among the sets well patterns, the geological and development factors that cause the difference are analyzed. Finally, the combined solution method, production composition analysis method and multivariate regression method are used to predict the development indexes of each set of water drive pattern in the very high water cut stage of W Oilfield.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357.6

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