Mini-Acid: Novel Technical Solution for Wireline Formation Testing Efficiency Enhancement in Carbonate Reservoirs

Day 3 Thu, November 17, 2022 Pub Date : 2022-11-15 DOI:10.2118/212092-ms

Yakov Dzhalatyan, E. Kazakevich, I. Shelomikhina, L. Belyakova, I. Oparin, Mikhail Malofeev, A. Mayorov, Ekaterina Lukyantseva, A. Budko

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Abstract

Carbonate reservoirs are widely spread all over Russian Land. Quite common methodology of carbonate wells productivity enhancement is reservoir stimulation with hydrochloric acid solutions (HCl). However, deteriorated reservoir properties during formation evaluation and Wireline Formation Testing (WFT) in open hole, could significantly impact on reservoir characterization results. This paper presents an innovative technique and several examples of its practical implementation, aimed to enhance WFT platforms performance in carbonate reservoirs. Technique involves low perm carbonate reservoirs stimulation using relatively low-volume acid solutions, immediately before performing formation testing with WFT platform. In addition, this technique allows to perform in-situ acid solutions effectiveness evaluation at reservoir conditions, naturally fractured reservoirs stimulation, as well as borehole surface clean-up in open hole and remedy work in cased hole, designated to scales removal from completion string components in cased hole.

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Mini-Acid:提高碳酸盐岩储层电缆地层测试效率的新技术解决方案

碳酸盐岩储层广泛分布在俄罗斯各地。提高碳酸盐岩井产能的常用方法是使用盐酸溶液(HCl)进行储层增产。然而，在裸眼地层评价和电缆地层测试(WFT)过程中，储层性质的恶化可能会严重影响储层表征结果。本文介绍了一种创新技术及其实际应用的几个例子，旨在提高碳酸盐岩储层WFT平台的性能。该技术包括在WFT平台进行地层测试之前，使用相对小体积的酸溶液对低渗透碳酸盐岩储层进行增产。此外，该技术还可以在储层条件下进行酸溶液的原位有效性评估、自然裂缝油藏增产、裸眼井的井面清理和套管井的修复工作，用于清除套管井完井管柱组件上的结垢。

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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Day 3 Thu, November 17, 2022

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