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THY修井暂堵剂的研究与应用

石油钻采工艺

1995年 17卷第5期

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Title

STUDY AND APPLICATION OF THY TEMPORARY PLUGGING AGENT FOR WELLWORKOVER

作者

李绍泽李治龙

Authors

Li Shaoze Li Zhilong

单位

辽河石油勘探局钻采院

摘要

THY修井暂堵剂是以油溶性树脂作为桥堵剂,桥堵储层孔道,在井壁形成屏敝层.从而减少修井液的漏失。桥堵剂是油溶性的、投产后与原油相遇其桥堵作用自行解除,储层渗透性得以恢复。该修井暂堵剂经辽河油田96口井、112井次现场应用表明,可有效地控制渗透性好的低压储层漏失.起到保护储层和辅助增产措施顺利实施的良好作用。

Abstract

THY temporary plugging agent is used to bridge off reservoir pore, produce borehole wall shielding zone, and then reduce leakage of workover fluid by taking oil-soluble resin as bridging-off agent. Because of oil-solubility of bridging-off agent, the shielding zone is removed when bridging-off agent mingles with crude oil, and then the formation permeability is restored. Field application results of 112 times in 96 wells in Liaohe oilfield indicate that this agent can control effectively leakage of workover fluid into high permeability and low pressure reservoir and is helpful to well stimulation.

关键词：

修井液; 可溶树脂; 堵漏剂; 屏蔽; 临时性封堵; 防止地层损害;

Keywords:

workover fluid; soluble resin; loss circulation material; shielding; temporary plugging agent; formation damage prevention;

基金项目

DOI

10.3969/j.issn.1000-7393.1995.05.016