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1. 发明公开

EP3950878A1 AQUEOUS DRILLING FLUID COMPOSITION COMPRISING XANTHAN GUM AND AN EXFOLIATED 2D MATERIAL 无效
公开(公告)号：EP3950878A1
公开(公告)日：2022-02-09
申请号：EP20305909.2
申请日：2020-08-07
申请人： Centre National de la Recherche Scientifique , Université de Montpellier , Ecole Nationale Supérieure de Chimie de Montpellier
发明人： VOIRY, Damien
IPC分类号： C09K8/10 , C09K8/08
摘要： The present invention belongs to the field of well drilling and to the extraction of a natural resources such as ground water, brine, natural gas, or petroleum, for the injection of a fluid.
The present invention relates to a new aqueous drilling fluid composition comprising xanthan gum and an exfoliated 2D material, its process of manufacture and its use. The invention further relates to drilling process comprising a step of using the aqueous drilling fluid composition of the invention.

2. 发明公开

EP3303696A1 NANOFIBRILLATED CELLULOSE FOR USE IN FLUIDS FOR PRIMARY OIL RECOVERY 审中-公开
标题翻译：纳米纤维素纤维用于流体中初级油回收
公开(公告)号：EP3303696A1
公开(公告)日：2018-04-11
申请号：EP16803824.8
申请日：2016-05-27
申请人： Elkem AS
发明人： AL-BAGOURY, Mohamed
IPC分类号： D21H11/18 , C09K8/10 , C09K8/20 , C08B15/08 , C09K8/514 , C09K8/90
CPC分类号： C09K8/035 , C08B15/08 , C08L1/02 , C08L1/286 , C08L97/02 , C08L2205/16 , C09K8/206 , C09K8/40 , C09K8/514 , C09K8/62 , C09K8/90 , C09K2208/08 , D21H11/18
摘要： The present invention relates to nanofibrillated cellulose (NFC) for use in drilling fluids, fracturing fluids, spacer fluids etc. The fluids contain NFC as a viscosifier with an aspect ratio of more than 100 and where the nanofibrils have a diameter between 5 and 100 nanometer and a length of more than 1 μm.

3. 发明公开

EP3303695A1 NANOFIBRILLATED CELLULOSE FOR USE IN FLUIDS FOR ENHANCED OIL RECOVERY 审中-公开
标题翻译：用于增强油回收的流体用纳米纤维素纤维
公开(公告)号：EP3303695A1
公开(公告)日：2018-04-11
申请号：EP16803823.0
申请日：2016-05-27
申请人： Elkem AS
发明人： AL-BAGOURY, Mohamed
IPC分类号： D21H11/18 , C09K8/10 , C09K8/20 , C09K8/58 , C08B15/08 , C09K8/514 , C09K8/80 , C09K8/90
CPC分类号： C09K8/58 , C08B15/08 , C08L1/02 , C09K8/10 , C09K8/20 , C09K8/514 , C09K8/588 , C09K8/80 , C09K8/90 , C09K2208/08 , C09K2208/10 , D21H11/18
摘要： The present invention relates to nanofibrillated cellulose (NFC) for use as viscosity modifier in fluids for enhanced oil recovery. The fluids contain NFC with an aspect ratio of less than 1000 where the nanofibrils have a diameter between 5 and 50 nanometer and a length of less than 10 μm.

4. 发明公开

EP2075300A1 Wellbore fluid 审中-公开
标题翻译： Bohrlochflüssigkeit
公开(公告)号：EP2075300A1
公开(公告)日：2009-07-01
申请号：EP07253978.6
申请日：2007-10-09
申请人： BP EXPLORATION OPERATING COMPANY LIMITED
发明人： The designation of the inventor has not yet been filed
IPC分类号： C09K8/10 , C09K8/20 , C09K8/24 , C09K8/52 , C09K8/86 , C09K8/68
CPC分类号： C09K8/514 , C09K8/10 , C09K8/206 , C09K8/28 , C09K8/52 , C09K8/68 , C09K8/90 , C09K2208/08 , C09K2208/18
摘要： An aqueous-based wellbore fluid comprising:
- an aqueous base fluid having a first level of salinity; and
- at least one polymer dissolved in said aqueous base fluid at a concentration of at least 1.0g/l, said polymer (i) having a viscosity average molecular weight in the range of from 20,000 to 900,000; and (ii) having a molecular structure such that the polymer chains dissolved in said wellbore fluid adopt a globular conformation, while in a fluid of a second level of salinity, said second level being a lower level of salinity than said first level, the polymer chains adopt an extended conformation. The fluid of the invention finds utility in method of carrying out a wellbore operation, which includes the steps of:
(a) introducing into a wellbore a novel aqueous-based wellbore fluid according to the invention; (b) allowing a filter-cake including said polymer in globular conformation to form; and subsequently (c) bringing a second fluid into contact with the filter-cake, said second fluid having a level of salinity which is lower than the level of salinity of said aqueous base fluid such that said polymer chains in said filter-cake adopt an extended conformation, thereby increasing the permeability of said filter-cake.
摘要翻译：一种水基井眼流体，其包含： - 具有第一盐度水平的基础水溶液; 和至少一种以至少1.0g / l的浓度溶于所述含水基础液体中的聚合物，所述聚合物（i）的粘均分子量为20,000至900,000; 和（ii）具有分子结构，使得溶解在所述井筒流体中的聚合物链采用球形构象，而在第二水平盐度的流体中，所述第二级是比所述第一级更低的盐度水平，所述聚合物链条采用延伸的构象。本发明的流体在进行井筒操作的方法中具有实用价值，该方法包括以下步骤：（a）向井筒中引入根据本发明的新的基于水的井筒流体; （b）使含有球状构象的所述聚合物的滤饼形成; 并且随后（c）使第二流体与滤饼接触，所述第二流体的盐度水平低于所述含水基础流体的盐度水平，使得所述滤饼中的所述聚合物链采用扩展构象，从而增加所述滤饼的渗透性。

5. 发明公开

EP2048215A1 Technology useful in wellbore fluids 审中-公开
标题翻译： FürBohrlochflüssigkeitennützlicheTechnologie
公开(公告)号：EP2048215A1
公开(公告)日：2009-04-15
申请号：EP08253117.9
申请日：2008-09-24
申请人： BP Exploration Operating Company Limited
发明人： Sawdon, Christopher Alan
IPC分类号： C09K8/10 , C09K8/20 , C09K8/24 , C09K8/52 , C09K8/86 , C09K8/68
CPC分类号： C09K8/68 , C09K8/10 , C09K8/206 , C09K8/24 , C09K8/508 , C09K8/52 , C09K8/90
摘要： The invention relates to the use of a polar organic liquid which is less than 10% by weight soluble in a salt-containing aqueous base fluid of an aqueous-based wellbore fluid but which is soluble in pure water, to increase the permeability of a filter-cake formed during a method of carrying out a wellbore operation, said method including the steps of:
(a) introducing into a wellbore an aqueous-based wellbore fluid comprising a salt-containing aqueous base fluid having dispersed therein at least part of said polar organic fluid;
(b) allowing a filter-cake to form; and subsequently
(c) bringing a second fluid into contact with the filter-cake, said second fluid having a level of salinity which is lower than the level of salinity of said aqueous base fluid.
摘要翻译：本发明涉及使用小于10重量％的极性有机液体，其可溶于含水基井筒液体的含盐水性基础液体，但可溶于纯水中，以增加过滤器的渗透性所述方法包括以下步骤：（a）向井眼中引入包含其中分散有至少部分所述极性的含盐水基液的水基井筒流体有机液体（b）形成滤饼; 并且随后（c）使第二流体与滤饼接触，所述第二流体的盐度水平低于所述含水基础流体的盐度水平。

6. 发明授权

EP2528985B1 NANOFIBRILLAR CELLULOSE FOR OILFIELD APPLICATIONS 有权转让
标题翻译：纳米纤维素纤维素用于油田应用
公开(公告)号：EP2528985B1
公开(公告)日：2018-05-16
申请号：EP11734416.8
申请日：2011-01-25
申请人： UPM-Kymmene Corporation
发明人： LAUKKANEN, Antti , TEIRFOLK, Jan-Erik , SALMELA, Juha , LILLE, Martina
IPC分类号： C08L1/02 , C09K8/10 , C09K8/40 , C09K8/514 , C09K8/516 , C09K8/588 , C09K8/70 , C09K8/90
CPC分类号： C09K8/90 , C08L1/02 , C08L1/04 , C08L2205/16 , C09K8/10 , C09K8/40 , C09K8/514 , C09K8/516 , C09K8/588 , C09K8/70 , C09K2208/08 , C09K2208/10 , D21C9/002 , Y10T428/298
摘要： An agent for oilfield applications capable of being dispersed in water is nanofibrillar cellulose. The nanofibrillar cellulose mixed in water gives shear-thinning behavior to the composition, which is pumped to a subterranean oil-containing formation to aid in oil recovery.

7. 发明公开

EP2890758A1 LOW TOXICITY VISCOSIFIER AND METHODS OF USING THE SAME 审中-公开
标题翻译：低毒及其使用方法增稠剂
公开(公告)号：EP2890758A1
公开(公告)日：2015-07-08
申请号：EP13753792.4
申请日：2013-08-21
申请人： Halliburton Energy Services, Inc.
发明人： HOFF, Michael, Herman
IPC分类号： C09K8/035 , C09K8/10 , C09K8/514 , C09K8/575 , C09K8/90
CPC分类号： C09K8/035 , C09K8/10 , C09K8/514 , C09K8/5758 , C09K8/90
摘要： Viscosifying compositions having reduced toxicity are used in treatment fluids in subterranean operations; methods include providing such treatment fluids including a viscosifying composition and an aqueous base fluid, the viscosifying composition including hydroxyethyl cellulose, about 10% to about 60% by weight of 2-pyrrolidone, and about 10% to about 60% by weight of a water soluble monoalkyl ether of propylene glycol having substantially no swelling effect on the hydroxyethyl cellulose, wherein a weight ratio of hydroxyethyl cellulose to 2-pyrrolidone is in a range from about 1:2 to about 2.6:1 and the method including placing the treatment fluid in a subterranean formation.
摘要翻译：增粘具有降低的毒性在地下作业处理流体使用的组合物; 方法包括提供寻求治疗流体，包括增粘组合物和按重量计2-吡咯烷酮，和大约10％的（重量）的水，以wässrige基液，所述稠化组合物包括羟乙基纤维素，约10％至约60％至约60％的具有对羟乙基纤维素基本上不溶胀作用丙二醇，worin羟乙基纤维素的重量比为2-吡咯烷酮的水溶性单烷基醚是在范围为约1：2至约2.6：1，并且所述方法包括将所述处理流体中地下地层。

8. 发明公开

EP2838971A1 SUBSTITUTED CELLULOSE ACETATES AND USES THEREOF 审中-公开
标题翻译：取代纤维素及其用途
公开(公告)号：EP2838971A1
公开(公告)日：2015-02-25
申请号：EP13741471.0
申请日：2013-01-23
申请人： Celanese Acetate LLC
发明人： COMBS, Michael, T. , GARRETT, Thomas, S.
IPC分类号： C09K8/10 , C09K8/588 , E21B43/22
CPC分类号： A23G3/36 , A23G3/42 , A23L21/10 , A23L23/00 , A23L29/262 , A61K8/731 , A61K2800/10 , A61Q19/00 , C08B3/06 , C08B3/22 , C08B5/00 , C08B5/14 , C08B7/00 , C08L1/12 , C08L1/16 , C08L1/20 , C09D101/12 , C09D101/16 , C09D101/20 , C09J101/12 , C09J101/16 , C09J101/20 , C09K8/035 , C09K17/40
摘要： The present invention relates to substituted cellulose acetates and methods of use thereof. One embodiment of the present invention provides a drilling fluid having a base fluid and a viscosifier having a substituted cellulose acetate having a polar substituent that comprises an oxygen atom covalently bonded to a nonmetal selected from the group of sulfur, phosphorus, boron, and chlorine; where the nonmetal is present in at least about 0.01% by weight of the substituted cellulose acetate.

9. 发明授权

EP2121868B1 STABLE SODIUM THIOSULFATE BASED FLUIDIZED POLYMER SUSPENSIONS OF HYDROXYETHYL CELLULOSE FOR OILFIELD SERVICES 有权
标题翻译：硫代硫酸钠基地的羟乙基纤维素给经营关于油田稳定和流化聚合物悬浮
公开(公告)号：EP2121868B1
公开(公告)日：2014-05-07
申请号：EP08726464.4
申请日：2008-03-05
申请人： Hercules Incorporated
发明人： MELBOUCI, Mohand
IPC分类号： C09K8/03 , C09K8/10 , C09K8/42 , C09K8/588 , C09K8/60 , C09K8/68
CPC分类号： C09K8/03 , C09K8/10 , C09K8/42 , C09K8/588 , C09K8/68 , C09K8/90

10. 发明公开

EP2542642A1 CLEAN VISCOSIFIED TREATMENT FLUIDS AND ASSOCIATED METHODS 有权
标题翻译： PURE粘胶处理液和相关方法
公开(公告)号：EP2542642A1
公开(公告)日：2013-01-09
申请号：EP11709766.7
申请日：2011-03-07
申请人： Halliburton Energy Services, Inc.
发明人： LOVELESS, David, M. , HARRIS, Phillip, C. , SAINI, Rajesh, K. , TONMUKAYAKUL, Narongsak , LIANG, Feng , FUNKHOUSER, Gary, P. , FITZGERALD, Rocky, M. , HOLTSCLAW, Jeremy , NORMAN, Lewis, R.
IPC分类号： C09K8/10 , C09K8/68
CPC分类号： C09K8/685 , C09K8/10
摘要： The present invention relates to low environmental impact treatment fluids comprising a compliant crosslinking agent, and methods of use employing such treatment fluids to treat subterranean formations. The methods include providing a low environmental impact treatment fluid including an aqueous base fluid, a viscosifying agent, and a compliant crosslinking agent that comprises an iron ion and a non-iron crosslinking metal ion; and placing the treatment fluid in a subterranean formation. In some embodiments, the viscosifying agent may be a compliant viscosifying agent.

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