کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4913074 | 1428757 | 2017 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Abnormal gelation phenomenon of Class G oil well cement incorporating polycarboxylic additives and its countermeasures
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Cementing security is endangered by the abnormal gelation phenomenon of cement slurry incorporating polycarboxylic additives occurred around 120 °C. The differences between gelatinous and non-gelatinous sections were investigated through various techniques. The polymer structural change around 120 °C could explain the abnormal gelation phenomenon by viscosity-temperature characterization. The other reasons are the polycarboxylic additives combine with Ca2+, SiO42â and aluminate hydrate by cross-linking reaction. The cross-linking structure developed flocs which was embedded in calcium silicate hydrate (C-S-H) gel and intertwined around stirring shaft. The practicable methods were proposed to relieve or solve the abnormal phenomenon of cement slurry.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 149, 15 September 2017, Pages 279-288
Journal: Construction and Building Materials - Volume 149, 15 September 2017, Pages 279-288
نویسندگان
Di Chen, Jintang Guo, Xiujian Xia, Yongjin Yu, Jianzhou Jin, Ming Xu, Shuoqiong Liu, Yakai Feng,