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公开(公告)号：EP1680478A2
公开(公告)日：2006-07-19
申请号：EP04730288.0
申请日：2004-04-29
发明人： THAEMLITZ, Carl, J.
IPC分类号： C09K8/04
摘要： New polymers, and their applications in water-based wellbore service fluids, such as, for example, drilling fluids, yield desirable filtration control and theological properties to such fluids even after exposure to HTHP aging. Typical temperatures encountered during such aging are around 350 - 400°F and the duration of the exposure is some significant time such as 16 hours or longer. Preferably, the polymers are random terpolymers of N-vinylcaprolactam, vinyl sulfonate monomer 2-acrylamido-2-methyl-1-propanesulfonic acid, and monomer acrylamide, most preferably in a molar ratio of 15:20:65 respectively. The polymers reduce HTHP filtration volumes in fresh water, sea water, potassium chloride, and lime mud systems. The polymers may also be used to inhibit or reduce shale erosion.
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2.发明公开METHOD AND BIODEGRADABLE SUPER ABSORBENT COMPOSITION FOR PREVENTING OR TREATING LOST CIRCULATION 审中-公开方法和可生物降解SUPER吸收器，以防止或漏失处理情况
公开(公告)号：EP1838797A1
公开(公告)日：2007-10-03
申请号：EP05794221.1
申请日：2005-10-14
IPC分类号： C09K3/00
摘要： A last circulation material and method for treatment employing the material is provided that has particular utility in offshore applications because the material may be used with saltwater or brine, as well as with fresh water, and is biodegradable. The material comprises a biodegradable superabsorbent polysaccharide polymer that is preferably uncrosslinked and non-ionic and that is capable of absorbing multiple times its weight in sea water.
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公开(公告)号：EP1530618A1
公开(公告)日：2005-05-18
申请号：EP03738312.2
申请日：2003-07-04
发明人： THAEMLITZ, Carl, J.
摘要： A method and composition is provided for a suspending agent for supporting components in drilling fluids, particularly oil-based drilling fluids, the suspending agent comprising the condensation product of a dimer or trimer fatty acid and diethanolamine.
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公开(公告)号：EP2841523A1
公开(公告)日：2015-03-04
申请号：EP13720729.6
申请日：2013-04-26
发明人： THAEMLITZ, Carl, J. , RODDY, Craig, W. , COVINGTON, Ricky, L. , CHATTERJI, Jiten , BRENNEIS, D.. Chad
IPC分类号： C09K8/03 , C09K8/502 , C09K8/504 , C09K8/516 , C04B20/00 , C04B28/00 , C09K8/46 , C09K8/48 , C09K8/487
CPC分类号： C09K8/032 , B82Y30/00 , C04B28/02 , C04B2111/00008 , C09K8/46 , C09K8/502 , C09K8/5045 , C09K8/516 , C09K2208/10 , C04B14/06 , C04B20/008
摘要： Disclosed embodiments relate to well treatment fluids and methods that utilize nano-particles. Exemplary nano-particles are selected from the group consisting of particulate nano-silica, nano-alumina, nano-zinc oxide, nano-boron, nano-iron oxide, and combinations thereof. Embodiments also relate to methods of cementing that include the use of nano-particles. An exemplary method of cementing comprises introducing a cement composition into a subterranean formation, wherein the cement composition comprises cement, water and a particulate nano-silica. Embodiments also relate to use of nano-particles in drilling fluids, completion fluids, simulation fluids, and well clean-up fluids.
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公开(公告)号：EP1601740A1
公开(公告)日：2005-12-07
申请号：EP04700735.6
申请日：2004-01-08
摘要： An invert emulsion fluid, method for making same, and method for using same as a servicing fluid in a well bore. The invert emulsion fluid contains an oleaginous fluid, a non-oleaginous fluid, and an emulsifier comprising one or more amines generally represented by the formula: wherein R is a cycloaliphatic hydrocarbon, each R' may be the same or different and is H or an alkyl having from about 1 to about 3 carbon atoms, each A may be the same or different and is NH or 0, and the sum of x and y ranges from about 1 to about 20. In a preferred embodiment, R is a radical selected from the group consisting of abietyl, dihydroabietyl, tetrahydroabietyl, and dehydroabietyl, R' is H, and A is 0.
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