发明名称 |
Method and biodegradable water based thinner composition for drilling subterranean boreholes with aqueous based drilling fluid |
摘要 |
An inhibitive water-based polymer mud system and method for using the system in drilling and in stabilizing wellbores is disclosed for use in water sensitive formations as an alternative to oil-based muds. The system comprises a fresh water or salt water base thinned or dispersed with a water soluble, biodegradable polyamide-based copolymer having at least one grafted side chain formed from ethylenic unsaturated compounds. This system is effective and has stable rheology over a broad pH range, even at a near neutral pH of 8.0. The drilling fluids do not contain heavy metals and are rheologically tolerant to contaminants such as cement, anhydrite and sodium and temperatures as high as about 400°F. |
申请公布号 |
AU2011281375(B2) |
申请公布日期 |
2014.10.02 |
申请号 |
AU20110281375 |
申请日期 |
2011.07.20 |
申请人 |
HALLIBURTON ENERGY SERVICES INC |
发明人 |
NZEADIBE, KINGSLEY IHUEZE;PEREZ, GREGORY PAUL |
分类号 |
C09K8/035;C09K8/24;C09K8/508 |
主分类号 |
C09K8/035 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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