发明名称 |
WATER-BASED DRILLING FLUIDS USING LATEX ADDITIVES |
摘要 |
A water-based drilling fluid having a polymer latex capable of providing a deformable latex film on at least a portion of a subterranean formation has been discovered to provide reduced drilling fluid pressure invasion when use d to drill in shale formations for hydrocarbon recovery operations. A precipitating agent such as a silicate or an aluminum complex (e.g. sodium aluminate) is preferably used in conjunction with the polymer. Typically, the water presen t contains a salt to form a brine, often to saturation, although the invention may be practiced with fresh water. If a salt is employed, it is often helpful to additionally employ a surfactant, such as a betaine, for example.
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申请公布号 |
CA2350154(A1) |
申请公布日期 |
2001.12.13 |
申请号 |
CA20012350154 |
申请日期 |
2001.06.08 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
BLAND, RONALD;STOWE, CALVIN;XIANG, TAO;BENAISSA, SADDOK;CLAPPER, DENNIS |
分类号 |
C09K8/12;C09K8/24;(IPC1-7):C09K7/02 |
主分类号 |
C09K8/12 |
代理机构 |
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