辽河油区低渗透油田潜力评价及改善开发效果对策研究

发布时间：2018-06-25 20:16

本文选题：低渗透油藏 + 油藏渗流特征　；参考：《西安石油大学》2015年硕士论文

【摘要】：近年来,低渗透油藏原油储量比重不断增大,且与其他类型油藏相比整体开发效果较差,虽然针对部分区块进行了改善开发和采油工艺试验,其效果也不尽理想。为对此类油藏进行综合分析和评价,本文根据低渗透油藏地质特征与渗流的特点,以辽河油田包14区块为例,在开发、治理效果调研、分析的基础上,以储层平均渗透率和原油物性为主要指标,将油层厚度、油藏埋藏深度、原油地质储量、开发难度、开采效果等作为参考因素,对低渗透油藏治理、改造可行性和潜力进行了分析。根据分析结果得出以下结论:在计算低渗透储层渗流的产液速率、含水等开发指标时需考虑启动压力梯度;随着油藏动态的不断变化,开发层系和开发井距均需重新评价与确定;利用压裂改造技术,包14块7生产井的日产油量与递减率均有所改善;研究区开发潜力可以从细分开发层系,周期注水、增补注水井点,改变液流方向,控制注采比,搞好酸化等方面考虑。
[Abstract]:In recent years, the proportion of crude oil reserves in low permeability reservoirs has been increasing, and compared with other types of reservoirs, the overall development effect is poor. In order to comprehensively analyze and evaluate this kind of reservoir, according to the geological characteristics and percolation characteristics of low permeability reservoir, this paper takes Bao-14 block of Liaohe Oilfield as an example, on the basis of investigation and analysis of development, treatment effect, etc. Taking the average permeability and physical properties of crude oil as the main indexes, taking reservoir thickness, reservoir burial depth, oil geological reserves, development difficulty and exploitation effect as the reference factors, the low permeability reservoir is treated. The feasibility and potential of transformation are analyzed. According to the analysis results, the following conclusions are drawn: the starting pressure gradient should be taken into account when calculating the fluid production rate and water cut of percolation in low permeability reservoir, and with the change of reservoir performance, The daily oil production and decline rate of Bao-14 block 7 production well have been improved by using fracturing technology, the development potential of the research area can be divided into development series and periodically injected water, and the development potential of the research area can be improved by the re-evaluation and determination of the development well spacing, the daily oil production rate and the decline rate of the production well Bao-14 block 7 are improved. Adding injection well points, changing fluid flow direction, controlling injection-production ratio, acidizing and so on.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13;TE348

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