Earth boring – well treating – and oil field chemistry – Earth boring – Contains organic component
Reexamination Certificate
2008-01-29
2008-01-29
Zimmer, Marc S. (Department: 1712)
Earth boring, well treating, and oil field chemistry
Earth boring
Contains organic component
C507S112000, C507S120000, C507S130000, C507S140000
Reexamination Certificate
active
10719235
ABSTRACT:
An electropositive and water-based production well treating fluid system exhibits electropositivity by using a cationic viscosifier meanwhile matched with a cationic fluid loss additive and, optionally, contains a mud-building agent, an electrical stabilizing agent, a colloid-stabilizing agent, lubricant, an oil layer protective agent and/or a weighting agent. The electropositive production well treating fluid can beffer solve the contradiction of technical requirements between “treating fluid stability” and “bore hole stability”, and features a strong ability to inhibit the dispersion of clay, a good effect of protecting oil-gas reservoirs, fast drilling speeds, regular shape of bore holes and good resistance to salt.
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Cui Yingchun
Guan Zengchen
Guo Baoyu
Guo Caixuan
Li Jiafen
Birch Stewart Kolasch & Birch, LLP.
China Petro-Chemical Corporation Shengli Petroleum Administrativ
China Petroleum & Chemical Corporation
Exploration & Production Research Insitute, SINOPEC
Zimmer Marc S.
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