温度增强型高弹性液体胶塞暂堵剂研发及应用

刘伟; 朱方辉; 于淑珍; 李琼玮; 张振云; 董晓焕; 李明星

doi:10.3969/j.issn.1001-5620.2019.06.022

温度增强型高弹性液体胶塞暂堵剂研发及应用

doi: 10.3969/j.issn.1001-5620.2019.06.022

刘伟^1,2,
朱方辉^1,2, ,,
于淑珍^1,2,
李琼玮^1,2,
张振云^1,2,
董晓焕^1,2,
李明星^1,2

1. 低渗透油气田勘探开发国家工程实验室, 西安 710018;
2. 中国石油长庆油田分公司油气工艺研究院, 西安 710018

基金项目:

中国石油天然气股份有限公司“长庆油田5000万吨持续高效稳产关键技术研究与应用”课题11（2016E-0511）

详细信息

作者简介:
刘伟,工程师,主要从事油气田化学剂研究及腐蚀防护方面工作。电话(029)86593149;E-mail:lw6_cq@petrochina.com.cn

通讯作者:
朱方辉,电话(029)86590751

中图分类号: TE357.12
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出版历程
- 收稿日期: 2019-09-13
- 刊出日期: 2019-12-30

Development and Application of a Temperature Enhanced Highly Elastic Liquid Gel Temporary Plugging Agent

LIU Wei^1,2,
ZHU Fanghui^{1,2
, ,},
YU Shuzhen^1,2,
LI Qiongwei^1,2,
ZHANG Zhenyun^1,2,
DONG Xiaohuan^1,2,
LI Mingxing^1,2

1. National Engineering Laboratory for Exploration and Development of Low Permeability Oil and Gas Fields, Xi'an, Shaanxi, 710018;
2. Oil & Gas Technology Research Institute, Changqing Oilfield Company, Xi'an, Shaanxi, 710018

摘要

摘要: 针对低压气井压井漏失难题，本文基于对有机交联凝胶结构上的认识，使用聚乙烯亚胺（PEI）作为交联剂制备了一种弹性液体胶塞EGL-1，能显著提高地层承压能力并阻断压井液漏失，降低储层损害。该体系基本配方为：2%抗高温聚合物SPAM+（1%～1.6%）交联剂PEI+0.02%稳定剂+清水，并对其地面流变性能、黏弹性能、破胶性能和堵漏性能进行了测试与评价。胶塞初始溶液流变测试结果表明，剪切速率为200 s^-1时的表观黏度稳定在350 mPa · s内，具有较好泵送能力；交联成胶后的胶塞黏弹测试表明，弹性模量在100 Pa～470 Pa之间，黏性模量在10 Pa～60 Pa之间，温度越高，胶塞强度越高。物理模拟实验结果表明，胶塞在裂缝岩心抗压达9 MPa以上，返排突破压力小于1 MPa，岩心渗透率恢复值达90%，可实现自然解堵。该技术在长庆下古碳酸盐岩低压气井暂堵压井进行了成功试验，对类似低压气藏防漏失压井具有一定借鉴作用。
- 液体胶塞 /
- 高温增强性能 /
- 黏弹性 /
- 暂堵压井 /
- 防漏 /
- 自然返排
Abstract: To address mud loss problems in low pressure gas wells, an elastic liquid gel plug EGL-1 has been developed using polyethyleneimine (PEI) as crosslinking agent. EGL-1 is able to remarkably enhance the pressure bearing capacity of formations and completely stop loss of fracturing fluids to minimize formation damage. The basic composition of EGL-1 is:2% SPAM (a high temperature polymer)+(1%-1.6%)PEI+0.02% stabilizer+water. Test and evaluation of EGL-1 showed that the new EGL-1 solution, after being seared at 200 s^-1, had apparent viscosity of less than 350 mPa·s, indicating that EGL-1 has good pumpability. Test on the crosslinked EGL-1 showed that it had elastic modulus between 100 Pa and 470 Pa, and viscous modulus between 10 Pa and 60 Pa. The strength of the gel plug increases with temperature. Physical simulation experiment results showed that the compressive strength of the gel plug in fractured cores was at least 9 MPa, and the breakthrough pressure of flowback test was less than 1 MPa. The permeability recovery of the cores tested with the gel plug was 90% and pore plugging caused by the gel plug can be removed naturally. This gel plug has been successfully used in killing a low-pressure gas well penetrating paleo-carbonate formation. The successful application of EGL-1 can be used to kill similar low pressure gas wells with potential of fluid losses.
- Liquid gel plug /
- Strengthening with temperature /
- Visco-elasticity /
- Temporary plugging /
- Kill a well /
- Fluid loss prevention

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参考文献(18)

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温度增强型高弹性液体胶塞暂堵剂研发及应用

doi: 10.3969/j.issn.1001-5620.2019.06.022

作者简介:
刘伟,工程师,主要从事油气田化学剂研究及腐蚀防护方面工作。电话(029)86593149;E-mail:lw6_cq@petrochina.com.cn

通讯作者:
朱方辉,电话(029)86590751

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Development and Application of a Temperature Enhanced Highly Elastic Liquid Gel Temporary Plugging Agent

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目录

留言板

温度增强型高弹性液体胶塞暂堵剂研发及应用

doi: 10.3969/j.issn.1001-5620.2019.06.022

作者简介: 刘伟,工程师,主要从事油气田化学剂研究及腐蚀防护方面工作。电话(029)86593149;E-mail:lw6_cq@petrochina.com.cn

通讯作者: 朱方辉,电话(029)86590751

计量

出版历程

Development and Application of a Temperature Enhanced Highly Elastic Liquid Gel Temporary Plugging Agent

计量

出版历程

目录

作者简介:
刘伟,工程师,主要从事油气田化学剂研究及腐蚀防护方面工作。电话(029)86593149;E-mail:lw6_cq@petrochina.com.cn

通讯作者:
朱方辉,电话(029)86590751