Comparison and Optimization of the Various Stimulation Methods: Case Study of Aryskum and Karabulak Fields

Day 2 Wed, November 16, 2022 Pub Date : 2022-11-15 DOI:10.2118/212085-ms

D. Abdrazakov, Aimurat Kudalsha, A. Mukanov, Duman Kassenov

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Abstract

A comprehensive study of about 200 production stimulation treatments in carbonate and sandstone formations of Karabulak and Aryskum brownfields was performed. The stimulation methods analyzed in this study are propped fracturing, acid fracturing, matrix acidizing with different fluids (both in carbonates and in sandstones), ultrasound treatments, and thermobarochemical treatments. The analysis consists of literature review, modeling of actual treatments in advanced fracturing simulation and matrix treatment simulation, and modeling of alternative schedules and fluids. The quick semiquantitative laboratory method of scales analysis is suggested as part of the study. As a result of the study, the key factors in the production decrease after propped fracturing are revealed; the reasons for the inefficiency of some matrix treatments are explained; and the mechanism of acid fracturing in the given layers is explained and suggestions are provided. In addition, some rare production enhancement-related methods (ultrasound and thermobarochemical treatments) are discussed. An overall table of production stimulation methods is provided, and it can be applied for any fields with similar characteristics.

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不同增产方法的比较与优化——以紫苏和卡拉布拉克油田为例

对Karabulak和Aryskum棕地碳酸盐岩和砂岩地层进行了约200项增产措施的综合研究。本研究分析的增产方法包括支撑压裂、酸压裂、不同流体(碳酸盐岩和砂岩)基质酸化、超声波处理和热压化学处理。分析包括文献综述、先进压裂模拟和基质处理模拟中实际处理的建模，以及替代时间表和流体的建模。建议采用快速半定量实验室方法进行鳞片分析。研究结果揭示了支撑压裂后产量下降的关键因素;说明了一些基体处理效率低下的原因;并对给定层的酸压机理进行了解释，提出了建议。此外，还讨论了几种罕见的增产方法(超声和热压化学处理)。给出了增产方法的总体表，可应用于任何具有类似特点的油田。

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 2 Wed, November 16, 2022

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