北鲁迈拉油田未过滤采出水回注的地层损伤建模

IF 1.3 4区 工程技术 Q3 CHEMISTRY, ORGANIC Petroleum Chemistry Pub Date : 2024-09-26 DOI:10.1134/S0965544124050098
Ali Alrekabi, Safaa Al-Adhab, Hasan Aljubouri, Huda Fannoosh Al-saad
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引用次数: 0

摘要

采出水回注(PWRI)是处理石油和天然气生产相关流体最重要的管理方法之一,因为它既经济又环保。然而,回注会对地层造成多种损害,其中最重要的损害是悬浮颗粒造成的孔隙堵塞现象,这会降低地层的渗透率。因此,有必要建立数学模型来预测储层中地层损害的增长和扩展,以帮助监测压水回注作业。经验相关性是代数地层损害模型之一。当缺乏有关损害产生过程的详细信息时,经验模型就变得非常重要。本文利用非线性回归工具,建立了一个经验模型来描述矩阵条件下北鲁迈拉油田未过滤采出水回注(UPWRI)作业对祖拜尔地层造成损害的增长和程度。根据损害的增长和程度,我们得出结论:在基质压力下回注未经过滤的采出水,由于增加了采出水注入量,导致井筒注入器附近和周围的主付地层受到较大损害。在基质注入过程中,注入水的质量必须满足严格的要求。损害从井筒附近的最大值(75%)开始,逐渐减小。损害区围绕轴向井筒注水器对称扩展,形成圆盘状,并随着流量和注水时间的增加而增加。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Formation Damage Modeling for Unfiltered Produced Water Reinjection in North-Rumaila Oilfield

Produced water re-injection (PWRI) is one of the most important management methods to dispose fluid associated with oil and natural gas production because it is economic and environmentally friendly method. However, several formation damage mechanisms are associated with the re-injection, and the most important damage is clogging of pore throats phenomenon due to the suspended particles, which will reduce the permeability of formation. Therefore, it is necessary to build mathematical model to predict the growth and extend of the formation damage in reservoir to help surveillance PWRI operations. Empirical correlation is one of the Algebraic formation damage models. Empirical model becomes important when there is a loss in detailed information about process of damage creation. In this paper, an empirical model was built to describe growth and extent of the damage in Zubair formation caused by the operation of unfiltered produced water re-injection (UPWRI) in North-Rumaila oilfield under matrix condition by using nonlinear regression tools. From growth and extent of the damage, we conclude that reinjected unfiltered produce water under matrix pressure led to large damage in Main Pay formation near and round wellbore injector because of increased volume of produced water injection. In matrix injection, the quality of the injected water must meet stringent requirements. The damage is start from maximum value (75%) at near wellbore and gradually decreases away from it. The damage zone expands symmetrical around axial wellbore injector formed circular dish that increase-by-increase flow rate and duration injection.

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来源期刊
Petroleum Chemistry
Petroleum Chemistry 工程技术-工程:化工
CiteScore
2.50
自引率
21.40%
发文量
102
审稿时长
6-12 weeks
期刊介绍: Petroleum Chemistry (Neftekhimiya), founded in 1961, offers original papers on and reviews of theoretical and experimental studies concerned with current problems of petroleum chemistry and processing such as chemical composition of crude oils and natural gas liquids; petroleum refining (cracking, hydrocracking, and catalytic reforming); catalysts for petrochemical processes (hydrogenation, isomerization, oxidation, hydroformylation, etc.); activation and catalytic transformation of hydrocarbons and other components of petroleum, natural gas, and other complex organic mixtures; new petrochemicals including lubricants and additives; environmental problems; and information on scientific meetings relevant to these areas. Petroleum Chemistry publishes articles on these topics from members of the scientific community of the former Soviet Union.
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