注水开发油田加密调整效果的评价方法

发布时间：2018-07-20 14:33

【摘要】：中国大多数砂岩油田,为了实现高产稳产和提高采收率的目的,均采用注水开发方案。然而,随着油井见水和含水率的增加,多数油田已进入产量递减阶段。为了减缓递减、改善开发现状和提高采收率,多数油田普遍进行了井网加密和层系调整工作。众所周知,油田的可采储量和剩余可采储量是制定开发方案和编制调整方案的基础。目前,中国油田的可采储量和剩余可采储量是聘请国际评估公司进行评估的,使用方法是Arps于1945年提出的经典产量递减法,而且主要是指数递减法。为此,基于广义的Arps递减形式,对于注水开发油田,提出了评价油田加密调整前后可采储量、剩余可采储量、储采比和递减率的方法。实例应用结果表明,马岭油田经过加密调整,油田的技术可采储量和经济可采储量分别提高了409.1×10~4和412.8×10~4t。
[Abstract]:In order to achieve high and stable production and improve oil recovery, most sandstone oilfields in China adopt water injection development scheme. However, with the increase of water breakthrough and water cut, most oil fields have entered the stage of production decline. In order to slow down decline, improve development status and increase oil recovery, most oilfields generally carry out well pattern infill and layer adjustment. It is well known that the recoverable reserves and the remaining recoverable reserves are the basis of the development plan and the adjustment plan. At present, the recoverable reserves and the remaining recoverable reserves in Chinese oilfields are evaluated by an international evaluation company. The methods used are the classical production decline method proposed by Arps in 1945, and the exponential decline method. For this reason, based on the generalized Arps decline form, a method for evaluating recoverable reserves, remaining recoverable reserves, reserve-production ratio and decline rate before and after infilling adjustment is put forward for waterflooding oil fields. The results of practical application show that the technical recoverable reserves and economic recoverable reserves in Maling Oilfield have been increased by 409.1 脳 10 ~ 4 and 412.8 脳 10 ~ (4) t respectively after infilling adjustment.
【作者单位】：中国石油勘探开发研究院;中国石化胜利油田分公司勘探开发研究院;
【分类号】：TE357.6

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