渤海浅层气防窜水泥浆体系的研究与应用

李厚铭; 项先忠; 张浩; 符军放; 赵琥

doi:10.3969/j.issn.1001-5620.2015.05.014

渤海浅层气防窜水泥浆体系的研究与应用

doi: 10.3969/j.issn.1001-5620.2015.05.014

中海油田服务股份有限公司油田化学研究院, 河北燕郊

详细信息

作者简介:
李厚铭,工程师, 1985年生, 2009年毕业于中国石油大学(北京)化工学院,现为中海油田服务股份有限公司油田化学研究院固井研发工程师,主要从事油田固井技术研究工作。地址:河北省三河市燕郊开发区行宫西大街81号油田化学研究院;邮政编码065201;电话(0316) 3367136/13581606243;E-mail:lihm14@cosl.com.cn。

中图分类号: TE256.6
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出版历程
- 收稿日期: 2015-04-16
- 刊出日期: 2015-09-30

Study and Application of Anti-channeling Cement Slurry Used in Shallow Gas Zones in Bohai

Department of Well Completion, Research Institute of Drilling Engineering, Honggang District, Daqing City, Heilongjiang 163413, China

摘要

摘要: 环空带压是渤海湾浅层气固井存在的一大技术难题,为此根据渤海湾浅层气特征,分析固井技术难点,设计了2种固井方案。方案A引入膨胀材料或增塑材料,方案B引入自修复材料。实验结果显示,当同时引入膨胀剂与纤维后, 96 h胶结强度仅提高15%左右,因此可知水泥浆的防窜能力不会有明显改善。而引入自修复材料后,水泥石的裂缝封堵率达到95%以上。分析认为,方案B的自修复封堵性能和工程性能均满足设计要求,该水泥浆体系经现场应用,取得良好的施工效果。
- 浅层气 /
- 固井 /
- 防窜水泥浆 /
- 自修复水泥浆 /
- 环空带压 /
- 渤海湾
Abstract: Two optimized cement slurries are designed to deal with sustained casing pressure problem in cementing shallow gas zones in Bohai, with the first one prepared with expanding material and plasticization agent, the second one with self-healing material. When expanding material and fibers are added into a cement slurry, the 96-hour cement strength of the slurry is increased only by 15%, which means that the anti-channeling capacity of the cement slurry will not be improved notably. When seal-healing material is added into the cement slurry, the sealing efficiency of the set cement reaches 95%, or even higher. It is thus believed that cement slurries treated with self-healing material satisfy the need for well cementing, and this is also proved by field practices.
- Shallow gas /
- Well cementing /
- Anti-channeling cement slurry /
- Self-healing cement slurry /
- Sustained casing pressure /
- Bohai Bay

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参考文献(9)

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