| 活性外掺料提高油井水泥石抗二氧化碳腐蚀能力研究 |
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| 引用本文： | 诸华军,姚晓,王道正,张祖华,华苏东,何玉鑫.活性外掺料提高油井水泥石抗二氧化碳腐蚀能力研究[J].石油钻探技术,2011,39(4):40-43. |
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| 作者姓名： | 诸华军 姚晓 王道正 张祖华 华苏东 何玉鑫 |
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| 作者单位： | 1. 南京工业大学材料科学与工程学院,江苏南京,210009
2. 常州市建筑科学研究院有限公司,江苏常州,213015 |
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| 基金项目： | 国家高技术研究发展计划(”863”计划)项目“低渗透油气藏复杂井用非水泥基固井材料研究”(编号:2006AA06Z225); 江苏省企业博士基金项目“海洋深水油气田固井用多功能材料研究”(编号:BK2009666)资助 |
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| 摘 要： | 为提高固井水泥环的抗CO_2腐蚀能力,开发了富硅铝质活性外掺料(HA)。通过比较不同碳化龄期水泥石的抗压强度、分析孔结构、测定渗透率、分析碳化层的成分和显微形貌等方法,对水泥石的抗碳化性能进行了研究。结果表明,加HA水泥石抗CO_2腐蚀能力明显优于净浆水泥石和掺硅灰水泥石:加HA水泥石在CO_2压力2 MPa、95℃腐蚀介质中养护28和90 d后,试样的抗压强度为35.4和33.7 MPa,较同龄期盐水养护试样分别降低了3.01%和13.14%(净浆水泥石分别降低了7.75%和31.15%),试样总孔隙率分别为19.87%和21.45%(净浆水泥石分别为28.81%和31.85%),且有害孔(直径>100 nm)所占比例小;在7 MPa驱替压力下,两个腐蚀龄期的加HA水泥石均未发生渗滤(净浆水泥石的渗透率分别为1.21×10~(-3)μm~2和1.68×10~(-3)μm~2);碳化90 d后的加HA水泥石外层试样中CaCO_3的衍射峰强度明显低于净浆水泥石,且碳化试样的产物呈连续致密,与净浆水泥石腐蚀后形成颗粒的结构明显不同。
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| 关 键 词： | 固井 水泥浆 水泥石 二氧化碳腐蚀 水泥添加剂 抗压强度 |
Active Additives to Improve the Performance of Anti-Corrosion of Carbon Dioxide of Set Cement in Oil Well |
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| Zhu Huajun,Yao Xiao,Wang Daozheng,Zhang Zuhua,Hua Sudong,He Yuxin.Active Additives to Improve the Performance of Anti-Corrosion of Carbon Dioxide of Set Cement in Oil Well[J].Petroleum Drilling Techniques,2011,39(4):40-43. |
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| Authors: | Zhu Huajun Yao Xiao Wang Daozheng Zhang Zuhua Hua Sudong He Yuxin |
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| Affiliation: | Zhu Huajun~1,Yao Xiao~1,Wang Daozheng~2,Zhang Zuhua~1,Hua Sudong~1,He Yuxin~1 (1.College of Materials Science and Engineering,Nanjing University of Technology,Nanjing,Jiangsu,210009,China,2.Changzhou Architectural Scientific Research Institute Co.Ltd.,Changzhou,213015,China) |
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| Abstract: | Rich silicon-aluminum active admixture(HA) has been developed with the aim at improving the performance of anti-carbonation of oil well cement sheath.The compressive strength of set cement,its pore structure, permeability,component and micro-morphology of carbonated specimens at different ages were analyzed.The performance of anti-carbonization was investigated.The results showed that the anti-carbonation property of set cement with HA agent was higher than that of the pure cement and those containing silic... |
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| Keywords: | well cementing cement slurry set cement carbon dioxide corrosion cement additives compressive strength |
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