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首页> 外文会议>International conference on advanced materials research >Laboratory Study on a Novel Self-diverting Gel Acid System Thickener
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Laboratory Study on a Novel Self-diverting Gel Acid System Thickener

机译：新型自转移凝胶酸体系增稠剂的室内研究

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摘要

Acid stimulation of carbonate formations using hydrochloric(HC1)acid-based systems to improve hydrocarbon production or water injection has been a common practice.The challenge of achieving full zonal coverage with the stimulation fluid still persists.This task is even more difficult in highly slanted layered,naturally fractured reservoirs exhibiting high permeability and porosity contrast. During acid stimulation treatments,the fluid has a natural tendency to take the path of least resistance,penetrating layers with the highest porosity and permeability while little or no acid is injected into lower-quality zones.Excessive fluid loss to these high-quality thief zones results in a nonhomogenous distribution of stimulation fluids across the targeted interval.This leaves neighboring lower-quality zones unstimulated,preventing them from reaching their maximum potential. In this paper,a gel acid system composing hydrophobically modified PAM and viscoelastic surfactant(SA-16)as a novel self-diverting acidizing system was introduced,which can lower acid loss.This novel system was evaluated on temperature stability,viscosity test,gel breaken and acid-rock kinetics test supported by laboratory study.Its favorably high viscosity,ideal gel breaken,upstanding temperature resistance and other prior properties can be applied to acid stimulation.
机译：使用盐酸（HC1）酸基体系对碳酸盐岩地层进行酸增产以提高碳氢化合物的产量或注水一直是一种普遍做法，而用增产液实现完全的区域覆盖仍然是一项挑战，在高度倾斜的情况下，这一任务更加困难。层状天然裂缝储层表现出高渗透率和孔隙度对比。在酸刺激处理期间，流体自然会选择阻力最小的路径，渗透具有最高孔隙率和渗透率的层，而很少或根本没有酸注入低质量区域。这些高质量小偷区域的流体损失过多结果导致刺激液在目标区间内分布不均匀，从而使相邻的低质量区域不受刺激，从而阻止了它们发挥最大潜力。本文介绍了一种由疏水改性的PAM和粘弹性表面活性剂（SA-16）组成的凝胶酸体系，它是一种可以降低酸损失的新型自转移酸化体系。破损和酸岩动力学试验得到实验室研究的支持。它具有良好的高粘度，理想的破胶性，优异的耐温性和其他先验性能，可用于酸刺激。

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