Experimental Investigation of Tight Sandstone Reservoir Damage Induced by Silicate-Based Drilling Fluid

IF 2.9 4区综合性期刊 Q1 Multidisciplinary

Arabian Journal for Science and Engineering Pub Date : 2024-03-22 DOI:10.1007/s13369-024-08857-2

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引用次数: 0

Abstract

Silicate-based drilling fluid (SDF) has a strong inhibition effect on shale swelling and provides good wellbore stability. SDF has also been widely used in drilling through the reservoir in recent years. However, SDF has certain damage effects on the reservoir, and its damage mechanism is not well understood. In this work, the damage of the tight sandstone formations induced by SDF was assessed by conducting fluid displacement and filtrate imbibition experiments. In addition, the damage mechanisms were further analyzed based on microscopic experiments. The research results mainly included the following four aspects: First, SDF caused significant reservoir damage by solid-phase particles and filtrate intrusion in tight sandstone reservoirs, and the latter was the main reason. Second, the incompatibility between the filtrate of the SDF and formation led to reservoir damage. This was because the SiO₃²⁻, CO₃²⁻, and OH⁻ in the SDF reacted with Ca²⁺, Mg²⁺, and Al³⁺ in the formation, resulting in the generation of new minerals such as kaolinite and gibbsite. Third, the filtrate of the SDF increased the hydrophilicity of the rock surface, which induced the aqueous trapping damage. Finally, SDF was strongly alkaline (pH = 13.08), in which OH⁻ produced by sodium metasilicate hydrolysis had alkaline corrosion effect on minerals, enhancing pore permeability. This work provides experimental evidence for the feasibility discussion of the SDF in tight sandstone reservoirs.

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硅酸盐基钻井液对致密砂岩储层损害的实验研究

摘要硅酸盐基钻井液（SDF）对页岩膨胀有很强的抑制作用，具有良好的井筒稳定性。近年来，SDF也被广泛应用于钻穿储层。然而，SDF 对储层有一定的损害作用，其损害机理尚不十分清楚。在这项工作中，通过进行流体位移和滤液浸泡实验，评估了 SDF 对致密砂岩地层的损害。此外，还根据微观实验进一步分析了破坏机制。研究成果主要包括以下四个方面：首先，在致密砂岩储层中，SDF 通过固相颗粒和滤液侵入造成了严重的储层损害，而后者是主要原因。其次，SDF 的滤液与地层不相容导致储层损害。这是因为 SDF 中的 SiO32-、CO32- 和 OH- 与地层中的 Ca2+、Mg2+ 和 Al3+ 发生反应，生成了新的矿物，如高岭石和吉比特石。第三，SDF 的滤液增加了岩石表面的亲水性，诱发了水捕集破坏。最后，SDF 呈强碱性（pH = 13.08），其中偏硅酸钠水解产生的 OH- 对矿物有碱性腐蚀作用，提高了孔隙渗透性。这项工作为探讨 SDF 在致密砂岩储层中的可行性提供了实验证据。

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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来源期刊

Arabian Journal for Science and Engineering 综合性期刊-综合性期刊

CiteScore

5.20

自引率

3.40%

发文量

审稿时长

4.3 months

期刊介绍： King Fahd University of Petroleum & Minerals (KFUPM) partnered with Springer to publish the Arabian Journal for Science and Engineering (AJSE). AJSE, which has been published by KFUPM since 1975, is a recognized national, regional and international journal that provides a great opportunity for the dissemination of research advances from the Kingdom of Saudi Arabia, MENA and the world.