W水驱油藏开发效果评价及注采系统调整

发布时间：2018-06-09 02:43

本文选题：动态分析 + 开发效果评价　；参考：《西南石油大学》2015年硕士论文

【摘要】：参考国内已经进行开发及其开采结束的油田区块,大多数的区块都是采取的注水开发的方式进行开采。注水是否有效,效果的好坏,既影响油田的开采状况的优劣,最终采收率的大小,还会影响油田开发的开采年限的长短,经济效益的高低。因此及时准确的对油田注水开发效果进行评价,掌握油田的实际开发情况十分重要。W油藏于2005年进入开发阶段,随着近年来的开采,W油藏暴露出的问题越来越多。针对该油藏提出一套有效的系统的评价注水开发效果的方案和鉴别标准,具有重要的意义。本文主要针对W油藏地质与生产动态特征,从含水率、注采连通性等方面对W油藏有一个明确的认识。在其基础上,从水驱储量控制程度、动用程度、产量变化、压力变化、注入水利用情况、注水量、采油液速度、采收率这八个方面进行开发效果评价。参照石油与天然气国家标准对指标进行划分以及单指标评价,然后通过灰色模糊数学的方法进行综合评价,对W油藏的开发状况有科学的认识。在对W油藏开发效果有了整体明确的认识上,对其开发不合理、不奏效的方面进行调整。在调整前先确定了W油藏的调整目的和原则,在当前开发情况下对部分生产指标重新进行了合理预测,然后通过井网(主要通过对油水井补钻,转注)以及注采对应关系(主要通过对油水井补孔,水井分层注水)两大方式对W油藏进行调整,以改善W油藏开发现状,提高原油采收率,增加W油藏的开发效益。
[Abstract]:Referring to the oil field blocks which have been developed and finished in China, most of the blocks are developed by water injection. Whether the water injection is effective or not, whether the effect is good or bad, not only affects the exploitation condition of the oilfield, the final recovery factor, but also affects the length of the exploitation life and the economic benefit of the oilfield development. Therefore, it is very important to evaluate the effect of oilfield water injection development in time and accurately, to master the actual development situation of oil field. W reservoir entered the development stage in 2005. With the development of W reservoir in recent years, more and more problems have been exposed. It is of great significance to put forward a set of effective schemes and identification criteria for evaluating the water injection development effect for this reservoir. This paper mainly aims at the geological and production dynamic characteristics of W reservoir, according to the water cut, There is a clear understanding of W reservoir in injection-production connectivity. On the basis of it, the development effect is evaluated from eight aspects, such as the control degree of water drive reserves, the degree of production, the change of pressure, the situation of water injection, the quantity of water injected, the speed of oil recovery and the recovery factor. According to the national standards of petroleum and natural gas, the indexes are divided and the single index is evaluated, and then the comprehensive evaluation is carried out by the method of grey fuzzy mathematics. There is a scientific understanding of the development situation of W reservoir. On the basis of an overall clear understanding of the development effect of W reservoir, the unreasonable and ineffective development of W reservoir is adjusted. Before adjustment, the purpose and principle of W reservoir adjustment are determined, and some production indexes are forecasted reasonably under the current development condition, and then through well pattern (mainly through supplementary drilling of oil-water wells, In order to improve the present situation of W reservoir, improve the oil recovery efficiency and increase the development benefit of W reservoir, the two ways of changing injection and corresponding relation of injection and production (mainly through filling hole in oil-water well and injecting water into water by stratified water well) are used to adjust the W reservoir in order to improve the present situation of development of W reservoir.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357.6

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