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公开(公告)号:US20070169936A1
公开(公告)日:2007-07-26
申请号:US10556867
申请日:2004-05-12
申请人: Benedicte Zusatz , Frederik Nilsson
发明人: Benedicte Zusatz , Frederik Nilsson
IPC分类号: E21B33/138 , E21B21/00 , C09K8/516
CPC分类号: C09K8/5045 , C09K8/5083 , C09K8/516
摘要: A cement system for use in treating lost circulation includes a slurry of cement, water and a super-absorbent polymer which absorbs free water in the slurry to form a gel—ore preferably a solid-like structure—when placed in the well, and which releases the absorbed water to the cement hydration reaction as the cement sets. The absorption of water causes the slurry to develop a solid-like structure. In one embodiment, the superabsorbent is polyacrylamide or modified crosslinked poly(meth)acrylate. Also presented is a method of treating lost circulation by pumping the above-mentioned cement system.
摘要翻译: 用于处理流失循环的水泥系统包括水泥,水和超吸收性聚合物的浆料,其在放置在井中时吸收浆料中的游离水以形成凝胶矿石,优选固体样结构,并且其中 作为水泥套,将吸收的水释放到水泥水化反应中。 水的吸收导致浆料形成固体样结构。 在一个实施方案中,超吸收剂是聚丙烯酰胺或改性的交联聚(甲基)丙烯酸酯。 还提出了通过泵送上述水泥系统来处理流失的方法。
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公开(公告)号:US07726400B2
公开(公告)日:2010-06-01
申请号:US10556867
申请日:2004-05-12
申请人: Benedicte Zusatz , Frederik Nilsson
发明人: Benedicte Zusatz , Frederik Nilsson
IPC分类号: E21B33/13
CPC分类号: C09K8/5045 , C09K8/5083 , C09K8/516
摘要: A cement system for use in treating lost circulation includes a slurry of cement, water and a super-absorbent polymer which absorbs free water in the slurry to form a gel—ore preferably a solid-like structure—when placed in the well, and which releases the absorbed water to the cement hydration reaction as the cement sets. The absorption of water causes the slurry to develop a solid-like structure. In one embodiment, the superabsorbent is polyacrylamide or modified crosslinked poly(meth)acrylate. Also presented is a method of treating lost circulation by pumping the above-mentioned cement system.
摘要翻译: 用于处理流失循环的水泥系统包括水泥,水和超吸收性聚合物的浆料,其在放置在井中时吸收浆料中的游离水以形成凝胶矿石,优选固体样结构,并且其中 作为水泥套,将吸收的水释放到水泥水化反应中。 水的吸收导致浆料形成固体样结构。 在一个实施方案中,超吸收剂是聚丙烯酰胺或改性的交联聚(甲基)丙烯酸酯。 还提出了通过泵送上述水泥系统来处理流失的方法。
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公开(公告)号:US06686323B2
公开(公告)日:2004-02-03
申请号:US10170795
申请日:2002-06-12
申请人: Frederik Nilsson , Sylwia Komocki
发明人: Frederik Nilsson , Sylwia Komocki
IPC分类号: C09K300
CPC分类号: C09K8/52 , B01F17/0092 , Y10S507/927
摘要: A surfactant composition for use in well treatment, particularly for removing oil-based mud deposits from a well prior to cementing, comprises an alkylpolyglucoside in a solution of a mutual solvent for water and hydrocarbon. The composition can be used to formulate a chemical wash by dissolving the composition at a concentration of about 1%-10% (e.g. 5%) by weight in water or brine.
摘要翻译: 用于井处理的表面活性剂组合物,特别是用于在固井之前从井中除去油基泥浆沉积物,包括在水和烃的互溶剂溶液中的烷基聚葡糖苷。 该组合物可用于通过将组合物以约1%-10%(例如5%)重量的浓度溶于水或盐水中来配制化学洗涤剂。
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公开(公告)号:US06511537B1
公开(公告)日:2003-01-28
申请号:US09623374
申请日:2000-10-20
IPC分类号: C04B1400
CPC分类号: C04B28/02 , C04B22/16 , C04B24/003 , C04B40/0039 , C04B2103/20 , C04B2103/22 , C09K8/46 , C04B24/18 , C04B24/06 , C04B24/14 , C04B24/38
摘要: Systems for retarding setting in an oilfield well cement slurry comprise a solution of a phosphonate selected from methylene phosphonic acid derivatives and a phosphate, in particular selected from the following salts or the corresponding acids: mono-phosphates (ortho-phosphates PO42; meta-phosphates PO3), acyclic poly-phosphates (pyrophosphates P2O74, tripolyphosphates P3O105) or cyclic poly-phosphates. The system preferably may also comprise a retarder booster and is more particularly applicable to cementing at low or medium temperatures.
摘要翻译: 用于在油田井水泥浆中延迟凝固的系统包括选自亚甲基膦酸衍生物和磷酸盐的膦酸盐溶液,特别是选自以下盐或相应的酸:单磷酸盐(正磷酸盐PO42;偏磷酸盐 PO 3),无环多磷酸盐(焦磷酸盐P2O74,三聚磷酸盐P3O105)或环状聚磷酸盐。 该系统优选地还可以包括缓凝剂助剂,并且更特别适用于在低或中等温度下固化。
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