Nanoparticles As Promising Additives to Improve the Drilling of Egyptian Oil and Gas Fields

A. Mady, O. Mahmoud, A. Dahab
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引用次数: 1

Abstract

Egypt is both one of the major oil-producing non-OPEC countries and one of the oldest energy producers in the Middle East. Recently, the Egyptian government have signed several agreements for the exploration of oil and gas in several provinces/regions including; the Mediterranean, the Western Desert, the Nile Delta, and the Gulf of Suez. Petroleum companies have given great attention to Egypt’s new discoveries such as Zohr Gas Field and Nour exploration prospect. Successful drilling operations to reach the oil and gas targets depends strongly on the effectiveness of the drilling fluid (mud). It can be considered as the heart of the drilling process, where they are used to fulfil several valuable functions. Drilling fluid technology is one of the most targeted and developed technologies worldwide. Several studies have examined the use of various types of nanoparticles (NPs) to enhance the properties and improve the performance of muds. NP can be defined as a simple particle structure with a size in the range of nanometers. The effectiveness of NPs can be accredited to their small size and high surface-area-to-volume ratio. Using NPs showed promising enhancements on the rheological and filtration characteristics as well as thermal stability and carrying capacity of the drilling fluid. Moreover, adding NPs to the drilling mud was found to minimize the shale permeability and thus, promote wellbore stability. The swelling and collapse of shale formations is expected under drilling with water-based mud, which might complicate the drilling operation. In the present work four types of NPs (nanosilica, nanoaluminium, nanotitanium, and nano copper oxide) were tested as promising additives to improve the characteristics of KCL-Polymer mud, which is mainly used to drill shaly formations. The impact of NPs-type, -size, and -concentration were thoroughly investigated using standard viscometer and API filter press. The results showed higher potential of nanotitanium and nanoaluminium to enhance the mud properties when used at small concentrations (0.3–0.5 wt.%). This research paper discusses a latest application and presents the most valuable findings concerning the efficient use of NPs in the drilling fluid industry. On this basis, different recommendations are stated, which might help researchers to better understand NPs’ functionality in this area of application and promote using NPs-based drilling muds as cost-effective and environmental-friendly fluids to drill the Egyptian oil and gas wells.
纳米颗粒是改善埃及油气田钻井的有前途的添加剂
埃及既是主要的非欧佩克产油国之一,也是中东地区历史最悠久的能源生产国之一。最近,埃及政府签署了几项协议,在几个省/地区勘探石油和天然气,包括;地中海、西部沙漠、尼罗河三角洲和苏伊士湾。埃及新发现的Zohr气田和Nour气田勘探前景引起了石油公司的高度重视。成功的钻井作业能否达到油气目标在很大程度上取决于钻井液(泥浆)的有效性。它可以被认为是钻井过程的核心,在那里它们被用来实现几个有价值的功能。钻井液技术是世界范围内最具针对性和最发达的技术之一。一些研究已经检验了使用不同类型的纳米颗粒(NPs)来增强性能和改善泥浆的性能。NP可以定义为一种简单的粒子结构,其尺寸在纳米范围内。NPs的有效性可以通过其小尺寸和高表面积体积比来认可。NPs的使用对钻井液的流变性和过滤特性、热稳定性和携砂能力都有很大的改善。此外,在钻井泥浆中添加NPs可以降低页岩渗透率,从而提高井筒稳定性。在水基泥浆钻井过程中,页岩地层会发生膨胀和塌陷,这可能会使钻井作业复杂化。在本工作中,四种NPs(纳米二氧化硅、纳米铝、纳米钛和纳米氧化铜)作为有希望的添加剂进行了测试,以改善主要用于页岩地层钻井的KCL-Polymer泥浆的特性。使用标准粘度计和API压滤机对nps类型、粒径和浓度的影响进行了深入研究。结果表明,纳米钛和纳米铝在低浓度(0.3 ~ 0.5 wt.%)下对泥浆性能的改善潜力较大。本文讨论了NPs在钻井液工业中的最新应用,并介绍了NPs在钻井液工业中有效利用的最有价值的发现。在此基础上,提出了不同的建议,这可能有助于研究人员更好地了解NPs在这一应用领域的功能,并促进使用基于NPs的钻井泥浆作为经济高效且环保的流体来钻探埃及的油气井。
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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