期刊
APPLIED SURFACE SCIENCE
卷 558, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2021.149901
关键词
Plugging agent; Graphene oxide; Carboxylation; Water-based muds
类别
资金
- National Natural Science Foundation of China [22078028, 21978026, 52004037]
- Changzhou Key Laboratory of Graphene-Based Materials for Environment and Safety [CM20153006, CE20185043]
- PetroChina Innovation Foundation [2019D-5007-0307]
- Natural Science Research Foundation in Universities of Jiangsu Province [19KJB440003]
- Natural Science Foundation of Jiangsu Province [BK20190930]
Carboxylated graphene oxide with a high percentage of carboxyl groups showed excellent high-temperature resistance and can serve as an efficient plugging agent in water-based muds.
Graphene oxide nanosheet was carboxylated and the relative percentage of carboxyl groups was 24.3% in carboxylated graphene oxide (GO-COOH), which is pretty higher than previous reports. After hydrothermal at 180 degrees C, GO-COOH kept the particle size distribution at 600 nm and the retaining carboxyl groups made GOCOOH still have pretty good dispersibility, thus increasing the high-temperature resistance. Moreover, the time of core pressure transmission of 0.1 wt% GO-COOH was 12 times that of 1 wt% silica and 4 times that of 4 wt% polypropylene glycol and polyether alcohol, indicating GO-COOH can be a novel and efficient hightemperature resistant plugging agent used in water-based muds.
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