Development and Laboratory Test of the Gelling Composition for the Selective Isolation of Formation Waters

Scientific Petroleum Pub Date : 2022-12-30 DOI:10.53404/sci.petro.20220200031

K. M. Ibragimov, F. K. Kazimov, A. F. Akberova

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引用次数: 3

Abstract

The paper discusses the development of a silicon-dioxide based back plugging material with a controllable gelling period, which provides selective isolation of highly permeable areas of the bottomhole zone (BHZ) in production wells. The optimal composition, concentration and mixing procedure of the components for the gelling process based on the reaction between sodium silicate (Na2SiO3) and hydrochloric acid (HCl) were determined. Also gel formation, beginning and end of solidification, temperature and baric barometric dependences of the process were studied at the best power mixture ratios. In addition, the effect of the gelling composition with the optimal composition on the permeability of the layers was studied by checking the layered formation model. It was determined that in certain concentrations and ratios of Na2SiO3 and HCl solutions, a gelling composition is formed, and it is possible to use this composition for the selective isolation of reservoir waters. Keywords: Well bottom zone; Gel; composition; Reservoir model; Hydrochloric acid; Liquid glass; Water flooding; Permeability; Selective isolation.

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地层水选择性隔离胶凝剂的研制及实验室试验

本文讨论了一种具有可控胶凝周期的二氧化硅基回堵材料的开发，该材料可以选择性地隔离生产井的井底区(BHZ)的高渗透区域。以硅酸钠(Na2SiO3)与盐酸(HCl)反应为基础，确定了胶凝过程中各组分的最佳组成、浓度和混合工艺。在最佳功率混合比下，研究了凝胶形成、凝固开始和结束、温度和气压对过程的影响。此外，通过层状地层模型校核，研究了最佳胶凝成分对层间渗透率的影响。结果表明，在一定浓度和比例的Na2SiO3和HCl溶液中，形成一种胶凝组合物，并且可以使用这种组合物选择性地隔离水库水。关键词:井底区;凝胶;组成;储层模型;盐酸;液态玻璃;注水;渗透率;选择性隔离。

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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Scientific Petroleum

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