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温敏性膨胀微胶囊防气窜水泥浆体系

张兴国,  于学伟,  郭小阳,  杨吉祥,  鄢锐,  李早元

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文章导航 > 钻井液与完井液  > 2018 >  35(1): 71-76
张兴国, 于学伟, 郭小阳, 杨吉祥, 鄢锐, 李早元. 温敏性膨胀微胶囊防气窜水泥浆体系[J]. 钻井液与完井液, 2018, 35(1): 71-76. doi: 10.3969/j.issn.1001-5620.2018.01.014
引用本文: 张兴国, 于学伟, 郭小阳, 杨吉祥, 鄢锐, 李早元. 温敏性膨胀微胶囊防气窜水泥浆体系[J]. 钻井液与完井液, 2018, 35(1): 71-76. doi: 10.3969/j.issn.1001-5620.2018.01.014
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ZHANG Xingguo, YU Xuewei, GUO Xiaoyang, YANG Jixiang, YAN Rui, LI Zaoyuan. A Temperature Sensitive Expanding Microcapsule Anti-Gas-Channeling Cement Slurry[J]. DRILLING FLUID & COMPLETION FLUID, 2018, 35(1): 71-76. doi: 10.3969/j.issn.1001-5620.2018.01.014
Citation: ZHANG Xingguo, YU Xuewei, GUO Xiaoyang, YANG Jixiang, YAN Rui, LI Zaoyuan. A Temperature Sensitive Expanding Microcapsule Anti-Gas-Channeling Cement Slurry[J]. DRILLING FLUID & COMPLETION FLUID, 2018, 35(1): 71-76. doi: 10.3969/j.issn.1001-5620.2018.01.014
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温敏性膨胀微胶囊防气窜水泥浆体系

doi: 10.3969/j.issn.1001-5620.2018.01.014

  • 1. 油气藏地质及开发工程国家重点实验室·西南石油大学, 成都 610500;

  • 2. 中国石油集团西部钻探工程有限公司, 新疆克拉玛依 834000

基金项目: 

国家自然科学基金“基于多相渗流理论的环空气窜机理及应用基础研究”（51574203）。

详细信息
    作者简介:

    张兴国,博士,副教授,1974年生,现在主要从事油气井固井方面的教学与科研工作。电话15881191152;E-mail:772376058@qq.com。

  • 中图分类号: TE256.3

A Temperature Sensitive Expanding Microcapsule Anti-Gas-Channeling Cement Slurry

  • 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500;

  • 2. China National Petroleum Corporation Xibu Drilling Engineering Company Limited, Karamay, Xin Jiang 834000

    摘要
  • 摘要: 以丙烯腈（AN）、甲基丙烯酸甲酯（MMA）和丙烯酸甲酯（MA）共聚物为壁材，异丁烷为芯材，采用悬浮聚合法制备了一种温敏性膨胀微胶囊防气窜剂，并使用激光粒度分析仪、扫描电子显微镜、油井水泥水窜/气窜模拟分析仪和水泥浆凝结收缩测试仪，探索了异丁烷用量对温敏性膨胀微胶囊防气窜剂膨胀性能的影响，评价了温敏性膨胀微胶囊防气窜水泥浆体系的防气窜效果。实验结果表明，在单位质量（100 g）的去离子水中加入质量比为3∶0.4∶2的AN∶MA∶MMA，30%的异丁烷，1%的引发剂过氧化月桂酰（LPO），0.1%的交联剂1，4-丁二醇二甲基丙烯酸酯（BDDMA），20%的分散剂纳米二氧化硅，反应温度为65℃，在氮气保护下制备得到温敏性膨胀微胶囊防气窜剂。该样品初始膨胀温度为70℃，最佳膨胀温度为83℃，最高耐温达120℃，膨胀倍率约为50。油井水泥水窜/气窜模拟分析测试和水泥浆凝结收缩测试结果显示，温敏性膨胀微胶囊防气窜剂添加量大于等于2%时能弥补水泥水化过程中的体积收缩，其水泥浆体系防气窜性能良好。

     

    Abstract: A temperature sensitive expanding microcapsule anti-gas-channeling agent has been synthesized with acrylonitrile (AN), methylmethacrylate (MMA) and methyl acrylate (MA) as the wall material, and iso-butane as the core material. The effects of the amount of iso-butane used in the synthesis on the performance of the anti-gas-channeling were studied, and the performance of the temperature sensitive expanding microcapsule anti-gas-channeling cement slurry in controlling gas channeling was evaluated. The studies and the evaluation results showed that the temperature sensitive expanding microcapsule anti-gas-channeling agent can be obtained under the following conditions:in 100 g of deionized water add AN, MMA and MA in a ratio of 3:0.4:2, 30% iso-butane, 1% lauroyl peroxide (LPO, as initiator), 0.1% 1, 4-butanediol dimethacrylate (BDDMA, as crosslinking agent), 20% nano silicon dioxide (as dispersant), and react these substances at 65℃ with the protection of nitrogen. The anti-gas-channeling agent has initial expansion temperature of 65℃, optimal expansion temperature of 83℃, and is resistant to temperature as high as 120℃. Rate of expansion of the anti-gas-channeling agent is 50. Stimulation of water-channeling/gas-channeling in oil well cement and test of cement slurry condensation and contraction indicated that volumetric contraction of cement slurry can be made up for with less than 2% of the synthesized anti-gas-channeling agent, meaning that this anti-gas-channeling agent has good gas-channeling prevention ability.

     

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  • 收稿日期:  2017-10-13
  • 刊出日期:  2018-01-30

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