螯合酸完井液体系的研究及应用

权宝华; 方培林; 任强; 杨凯; 王冬

doi:10.3969/j.issn.1001-5620.2016.04.026

螯合酸完井液体系的研究及应用

doi: 10.3969/j.issn.1001-5620.2016.04.026

中海油能源发展股份有限公司工程技术分公司, 天津 300452

详细信息

作者简介:
权宝华,工程师,1986年生,获得中国石油大学(华东)化学工程与技术专业硕士学位,现从事海上油气田增产措施和油气层保护方向的工作.电话13820005846;E-mail:quanbaohua@163.com.

中图分类号: TE257.6
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出版历程
- 收稿日期: 2015-10-09
- 刊出日期: 2016-07-31

Study and Application of a Completion Fluid Containing Acid Chelating Agents

CNOOC EnerTech-Drilling & Production Co, Tianjin 300452

摘要

摘要: 针对渤中某油田的储层和原油特性，研发了一种螯合酸完井液体系。室内实验评价结果表明，螯合酸完井液在60℃下对渤中某油田油砂溶蚀率为3.62%、与渤中某油田油砂按质量比为1︰1反应72h后pH值为6.98，防膨率达到88.7%，对渤中某油田岩心渗透率恢复值达到127.6%，对铁离子螯合能力为110.15mg/g，对钙离子螯合能力为878.3mg/mL，体系的腐蚀速率能够满足现场要求。经渤中某油田应用表明，螯合酸完井液作为射孔液取得了增产效果。
- 螯合酸 /
- 完井液 /
- 储层保护 /
- 渗透率 /
- 增产
Abstract: A completion fluid treated with acid chelating agents has been specially developed for use in Bozhong. In laboratory studies, the percent solution rate of the completion fluid to the oil sand taken from Bozhong was 3.62%at 60℃. At a mass ratio of 1∶1, reaction of the completion fluid and the oil sand for 72 hours resulted in a pH of 6.98. Percent reduction of swelling of the 28-2S sand cores was 88.7%. In permeability experiments, the permeability return of the oil sand tested with the completion fluid was 127.6%. The chelating capacity of the completion fluid was 110.15 mg/g to ferric ions, and 878.3 mg/mL to calcium ions. The corrosion rate of the completion fluid satisfied the needs for field operation. Oil production rate has been enhanced using the completion fluid as a perforation fluid.
- Acid chelating agent /
- Completion fluid /
- Reservoir protection /
- Permeability /
- Stimulation

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参考文献(8)

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