基于形状记忆环氧树脂聚合物的温敏可膨胀型堵漏剂研制及性能评价

王照辉; 崔凯潇; 蒋官澄; 滑志超; 许朋琛; 郭玉锋; 孙昊

doi:10.3969/j.issn.1001-5620.2020.04.002

基于形状记忆环氧树脂聚合物的温敏可膨胀型堵漏剂研制及性能评价

doi: 10.3969/j.issn.1001-5620.2020.04.002

1. 中国石油集团渤海钻探工程有限公司第四钻井工程分公司, 河北任丘 062552;
2. 中国石油大学(北京)油气资源与探测国家重点实验室·石油工程教育部重点实验室, 北京 102249

基金项目:

中国石油集团渤海钻探工程有限公司项目“基于形状记忆聚合物的随钻堵漏剂研制”（2019Z22K）；“十三五”国家科技重大专项“深井超深井优质钻井液与固井完井技术研究”（2016ZX05020-004）、“复杂油气田地质与高效钻采新技术”（2017ZX05009）；国家自然科学创新团体项目“复杂油气井钻井与完井基础研究”（51821092）、国家自然科学基金重大项目“井筒工作液与天然气水合物储层作用机理和调控方法”（51991361）；国家自然基金面上项目“聚合物拓扑结构和序列结构影响其流变调节能力的机理及结构优化研究”（51874329）

详细信息

作者简介:
王照辉,高级工程师,1975年生,现从事钻井工程和钻井液技术研究工作。E-mail:wangzhaohui01@cnpc.com.cn

通讯作者:
蒋官澄,二级教授,博士,现在从事钻井液技术研究工作。E-mail:m15600263100_1@163.com

中图分类号: TE283
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出版历程
- 收稿日期: 2020-04-15
- 刊出日期: 2020-08-28

Development and Evaluation of a Temperature-Sensitive Expandable Lost Circulation Material Made from a Shape Memory Epoxy Polymer

1. The Fourth Branch Company of CNPC Bohai Drilling Engineering Company Limited, Renqiu, Hebei 062552;
2. State Key Laboratory of Petroleum Resources and Prospecting, MOE Key Laboratory of Petroleum Engineering, China University of Petroleum, Beijing 102249

摘要

摘要: 为避免当前常规惰性堵漏颗粒和吸水凝胶颗粒在堵漏应用过程中存在的问题，以热固性形状记忆环氧树脂作为基础材料，通过添加空心玻璃微珠改善了可压缩性能，形成了形状记忆环氧树脂复合泡沫，最后成功制备出具有不同响应温度和膨胀倍数的温敏可膨胀型智能堵漏剂SMP-LCM。通过控制形状记忆环氧树脂中交联组分含量，得到了不同响应温度区间（50~100℃）的形状记忆环氧树脂。通过控制体系中孔隙含量，得到了一系列不同膨胀率（5%~110%）的形状记忆环氧树脂泡沫及其颗粒。室内评价表明，SMP-LCM温敏堵漏剂可在温度激发下实现快速体积膨胀，且膨胀率不受介质种类影响，对大孔隙砂盘和砂床具有良好的封堵承压效果。所研发的形状记忆泡沫堵漏剂属于温敏膨胀型堵漏材料，能够以较小尺寸进入漏层深处并在地层温度下发生膨胀，通过自身因形状记忆效应产生的恢复应力有效加固井眼而又不致压裂地层，进而提高井筒薄弱地层承压能力，展现出了良好的应用前景。
- 井漏 /
- 形状记忆 /
- 环氧树脂 /
- 温敏堵漏剂
Abstract: To eliminate the problems encountered in mud loss control with regular inert particle lost circulation materials (LCM) and water-absorbing gel particles, a shape memory epoxy compound foam was developed with shape memory epoxy as the base material and hollow glass beads added into the epoxy to improve its compressibility. With the epoxy compound foam, an expandable smart temperature-sensitive LCM, SMP-LCM was developed. SMP-LCM can be made to have different response temperatures and expanding ratios. By controlling the concentration of crosslinking agent in the shape memory epoxy, shape memory epoxies of different response temperature ranges between 50 ℃ and 100 ℃ were obtained. By controlling the number of pores in the epoxy, shape memory epoxy foams of different expansion rates (5% - 110%) and the foam particles can be obtained. Laboratory experimental results showed that at the effect of temperature, SMP-LCM can expand very fast, and the expansion rate is not affected by the type medium in which the LCM is dispersed. This makes SMP-LCM very suitable for plugging sand discs and sand beds with big pores and rendering them high pressure bearing capacity. SMP-LCM is a temperature-sensitive expandable LCM, able to enter into the very depth of loss zones with small volume and expand at the effect of the temperature therein. In the loss zones, SMP-LCM, because of its shape memory effect, can produce a restoring stress with which the formation can be strengthened while not be fractured, thereby enhancing the pressure bearing capacity of the weak formations. With these characteristics, SMP-LCM has shown a perfect application prospect.
- Lost circulation /
- Shape memory /
- Epoxy /
- Temperature sensitive LCM

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参考文献(26)

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