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首页> 外文会议>2007 SPE/IADC Middle East Drilling Technology Conference amp; Exhibition >In Situ Gelled Acid as a Diverting System in Water Injection Well
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In Situ Gelled Acid as a Diverting System in Water Injection Well

机译：注水井中的原位胶凝酸转移系统

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摘要

The formation damage of water injection wells reduces the ability of the injected fluids (water) to flow through the formations in order to maintain the reservoir pressure and sweep the oil to producer, therefore it is common use the acid to remove theses damages and enhance well injectivity. This paper describes the successful job in one water injection well in Libya by using an In-situ gelled acid as a diverter with acid treatments to remove formation damage and improve permeability along the whole interval. The water injection well was suffering high skin damage along 27 ft of the total 42 ft interval; the remaining 16 ft took the entire volume of the injected water. The objective of the treatment was to remove the damage and improve the permeability in the damaged zone. Use of the In-Situ gelled acid was decided to block temporary the high permeable zone and allow the regular acid to create worm hole in the damaged zone. The In-situ gelled acid is tested at the laboratory before performing the job. The polymer was cross linked at pH 2 and the sudden rise in viscosity was to about 1000 m Pa S (cp). The design, quality control and results are detailed in this paper.
机译：注水井的地层损害会降低注入的流体（水）流过地层的能力，以维持储层压力并向生产者扫油，因此通常使用酸来消除这些损害并提高井眼内射性本文介绍了利比亚一处注水井的成功工作，该井使用原位胶凝酸作为分流器，并进行了酸处理，以消除地层损害并提高整个井眼的渗透率。在总共42英尺的间隔中，注水井遭受了27英尺的严重皮肤伤害。其余的16英尺占用了注入水的全部体积。处理的目的是消除损坏并提高损坏区域的渗透性。决定使用原位胶凝酸来暂时阻滞高渗透性区域，并允许普通酸在受损区域中产生蠕虫孔。在执行这项工作之前，原位胶凝酸要在实验室进行测试。聚合物在pH 2交联，粘度突然升高至约1000 m Pa S（cp）。本文详细介绍了设计，质量控制和结果。

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