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- Title
Slight expanding cement plugging slurry system for water production casing--damaged wells in Changqing Ansai oilfield.
- Authors
Yang Lihua; Li Zaoyuan; Wang Xiaoyong
- Abstract
Aimed at the problems in conventional plugging agents used in water production casing-damaged wells in Changqing Ansai oilfield, chemical plugging performance evaluations and matching system researches of slight expansion cement were conducted. As light expansion cement system suitable for water production casing-damaged wells was developed. Laboratory experiments show this cement system has the characteristics of easily miscibility, well stability and effectively resident in plugging zone. Its micro--expansibility after solidification is benefit for preventing water producing that caused by contraction of cement paste in later plugging stage. It provides a new inorganic chemical plugging system to solve the plugging problems of water production casing--damaged wells in Changqing Ansai oilfield.
- Subjects
CHINA; OIL fields; OIL wells; MISCIBILITY; CHANGQING Xian (China)
- Publication
Chemical Engineering of Oil & Gas / Shi You Yu Tian Ran Qi Hua Gong, 2012, Vol 41, Issue 3, p314
- ISSN
1007-3426
- Publication type
Article