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61. 发明授权

US5888944A Oil-based drilling fluid 失效
标题翻译：油基钻井液
公开(公告)号：US5888944A
公开(公告)日：1999-03-30
申请号：US880266
申请日：1997-06-23
申请人： Arvind D. Patel
发明人： Arvind D. Patel
IPC分类号： C09K20060101 , C09K8/32 , C09K8/36 , C09K8/52 , E21B21/06 , C09K7/06 , C09K7/00
CPC分类号： C09K8/32 , C09K8/36 , C09K8/52 , E21B21/068 , C09K2208/18
摘要： A method of removing the filter cake formed from invert emulsion compositions including an oleaginous, a non-oleaginous and an acid sensitive surfactant in an oil and gas well are disclosed. The acid sensitive surfactant is selected so that the invert emulsion can be broken and residual filter cake solids made water-wet upon the addition of an acidic wash fluid to the well.
摘要翻译：公开了一种在油气井中除去由包含油性，非油性和酸敏感性表面活性剂的反相乳液组合物形成的滤饼的方法。选择酸敏感性表面活性剂，使得可以破坏反相乳液，并且在将酸性洗涤液添加到孔中时，残留的滤饼固体变湿水。

62. 依法登记的发明

USH1611H Glycols as internal phase in oil well drilling fluids 失效
标题翻译：二醇作为油井钻井液中的内相
公开(公告)号：USH1611H
公开(公告)日：1996-11-05
申请号：US147743
申请日：1993-11-04
申请人： Arvind D. Patel
发明人： Arvind D. Patel
IPC分类号： C09K8/34 , C09K7/06
CPC分类号： C09K8/34
摘要： An emulsion and emulsion drilling fluid are disclosed. The emulsion has utility as an oil based drilling fluid comprising a glycol emulsified in a synthetic hydrocarbon material. The synthetic hydrocarbon material has an average molecular weight of from about 120 to 1,000 and is synthesized from one or more olefinic monomers having a chain length of C.sub.2 to C.sub.14.
摘要翻译：公开了一种乳液和乳液钻井液。该乳液作为含有在合成烃材料中乳化的二醇的油基钻井液具有效用。合成烃材料的平均分子量为约120-1,000，由一个或多个链长C2至C14的烯属单体合成。

63. 发明授权

US5189012A Oil based synthetic hydrocarbon drilling fluid 失效
标题翻译：油基合成油气钻井液
公开(公告)号：US5189012A
公开(公告)日：1993-02-23
申请号：US535110
申请日：1990-06-08
申请人： Arvind D. Patel , Raymond E. McGlothlin , Roger D. Bleier , H. N. Brinkley
发明人： Arvind D. Patel , Raymond E. McGlothlin , Roger D. Bleier , H. N. Brinkley
IPC分类号： C09K8/28 , C09K8/34 , C09K8/36
CPC分类号： C09K8/36 , C09K8/28 , C09K8/34 , C09K2208/02 , Y10S507/905
摘要： The present invention relates to an improved continuous phase for an oil based drilling fluid and specifically a synthetic hydrocarbon continuous phase which is non-polluting and minimally toxic. The invention provides excellent drilling fluid properties under a wide variety of drilling conditions. The synthetic hydrocarbons are selected from the group consisting of branched chain oligomers synthesized from one or more olefins containing a C.sub.2 to C.sub.14 chain length and wherein the oligomers have an average molecular weight of from 120 to 1000. In the drilling fluid compositions, suitable emulsifiers, wetting agents, viscosifiers, weight materials and fluid loss additives are utilized in conjunction with water and/or a brine phase for the desired rheological properties.

64. 发明授权

US4713183A Oil based drilling fluid reversion 失效
标题翻译：油基钻井液回复
公开(公告)号：US4713183A
公开(公告)日：1987-12-15
申请号：US838975
申请日：1986-03-12
申请人： Arvind D. Patel , Carmelita Salandanan
发明人： Arvind D. Patel , Carmelita Salandanan
IPC分类号： C09K8/32 , C09K7/06
CPC分类号： C09K8/32
摘要： On occasion, during drilling operations employing oil base drilling muds, conditions occur that cause the surface of the solid materials in the mud to be water wet, changing the rheology of the drilling mud such that it is unusable and has to be discarded. In accordance with this invention, a novel method is provided to reverse this condition so that the water wet surfaces of the solid particles become oil wet again, restoring the drilling mud to substantially its original condition or level or to such a condition that it can continue to be used in drilling operations. This is accomplished by adding to the drilling mud containing water wet particles at least one of a specific and critical group of imidazolines.The imidazolines may be added to stable oil mud drilling fluids to decrease possible water wetting of the particle surfaces therein.
摘要翻译：有时，在使用油基钻井泥浆的钻井作业中，会发生使泥浆中的固体物质的表面变湿的情况，改变钻井泥浆的流变性，使其不可用并且必须被丢弃。根据本发明，提供了一种新的方法来逆转这种情况，使得固体颗粒的水湿表面再次变成油，将钻井泥浆恢复到基本上其原始状态或水平，或恢复到可以继续的状态用于钻井作业。这是通过向含有特定和关键的咪唑啉族组中的至少一种的水湿颗粒添加钻井泥浆来实现的。可以将咪唑啉加入到稳定的油泥钻井液中以减少其中颗粒表面的可能的水润湿。

65. 发明授权

US08598095B2 Low conductivity water based wellbore fluid 失效
标题翻译：低导电性水基井眼液
公开(公告)号：US08598095B2
公开(公告)日：2013-12-03
申请号：US12992320
申请日：2009-06-03
申请人： Arvind D. Patel , Emanuel Stamatakis
发明人： Arvind D. Patel , Emanuel Stamatakis
IPC分类号： B28D1/14
CPC分类号： C09K8/24 , C09K8/12 , C09K2208/12 , E21B21/00 , E21B21/01
摘要： A low electrical conductivity water-based wellbore fluid for use in drilling wells through a formation containing a clay which swells in the presence of water, said wellbore fluid that includes an aqueous base fluid; and a polymeric non-ionic tertiary amine is disclosed. Methods of using such fluids are also disclosed.
摘要翻译：一种低导电性水基井眼流体，用于通过含有在水存在下溶胀的粘土的地层钻井，所述井筒流体包括基础水溶液; 和聚合物非离子叔胺。还公开了使用这种流体的方法。

66. 发明授权

US08298996B2 Low toxicity shale hydration inhibition agent and method of use 失效
标题翻译：低毒页岩水化抑制剂及其使用方法
公开(公告)号：US08298996B2
公开(公告)日：2012-10-30
申请号：US13082973
申请日：2011-04-08
申请人： Arvind D. Patel
发明人： Arvind D. Patel
IPC分类号： C09K8/528
CPC分类号： C09K8/12 , C09K2208/12
摘要： A low toxicity composition and method of reducing the swelling of clay in well comprising circulating in the well a water-based fluid comprising a functionally effective concentration of the additive formed from the following reaction of a tertiary amine of the following general formula: wherein R1 and R2 are alkyl or hydroxyalkyl groups with one to three carbon atoms or combinations thereof, and R3 is a hydroxyalkyl group with one to three carbon atoms, with an alkylating agent of the following general formula: R-A wherein R is an alkyl radical with one to three carbon atoms, and A is an organic or inorganic anion selected from the group consisting of sulfate, phosphate, carbonate, and combinations thereof.
摘要翻译：一种低毒组合物和减少井中粘土膨胀的方法，包括在井中循环的水基流体，其包含由以下通式的叔胺的以下反应形成的功能有效浓度的添加剂：其中R1和 R2是具有1至3个碳原子的烷基或羟烷基或其组合，并且R 3是具有1至3个碳原子的羟烷基，具有以下通式的烷基化剂：其中R是具有1至3个碳原子，A是选自硫酸盐，磷酸盐，碳酸盐及其组合的有机或无机阴离子。

67. 发明授权

US07939473B2 Low toxicity shale hydration inhibition agent and method of use 失效
标题翻译：低毒页岩水化抑制剂及其使用方法
公开(公告)号：US07939473B2
公开(公告)日：2011-05-10
申请号：US12041364
申请日：2008-03-03
申请人： Arvind D. Patel
发明人： Arvind D. Patel
IPC分类号： C09K8/528
CPC分类号： C09K8/12 , C09K2208/12
摘要： A low toxicity composition and method of reducing the swelling of clay in well comprising circulating in the well a water-based fluid comprising a functionally effective concentration of the additive formed from the following reaction of a tertiary amine of the following general formula: wherein R1 and R2 are alkyl or hydroxyalkyl groups with one to three carbon atoms or combinations thereof, and R3 is a hydroxyalkyl group with one to three carbon atoms, with an alkylating agent of the following general formula: R-A wherein R is an alkyl radical with one to three carbon atoms, and A is an organic or inorganic anion selected from the group consisting of sulfate, phosphate, carbonate, and combinations thereof.
摘要翻译：一种低毒组合物和减少井中粘土膨胀的方法，包括在井中循环的水基流体，其包含由以下通式的叔胺的以下反应形成的功能有效浓度的添加剂：其中R1和 R2是具有1至3个碳原子的烷基或羟烷基或其组合，并且R 3是具有1至3个碳原子的羟烷基，具有以下通式的烷基化剂：其中R是具有1至3个碳原子，A是选自硫酸盐，磷酸盐，碳酸盐及其组合的有机或无机阴离子。

68. 发明申请

US20110061866A1 LOW CONDUCTIVITY WATER BASED DRILLING FLUID 失效
标题翻译：低电导率水基钻井液
公开(公告)号：US20110061866A1
公开(公告)日：2011-03-17
申请号：US12992320
申请日：2009-06-03
申请人： Arvind D. Patel , Emanuel Stamatakis
发明人： Arvind D. Patel , Emanuel Stamatakis
IPC分类号： E21B43/22 , C09K8/24
CPC分类号： C09K8/24 , C09K8/12 , C09K2208/12 , E21B21/00 , E21B21/01
摘要： A low electrical conductivity water-based wellbore fluid for use in drilling wells through a formation containing a clay which swells in the presence of water, said wellbore fluid that includes an aqueous base fluid; and a polymeric non-ionic tertiary amine is disclosed. Methods of using such fluids are also disclosed.
摘要翻译：一种低导电性水基井眼流体，用于通过含有在水存在下溶胀的粘土的地层钻井，所述井筒流体包括基础水溶液; 和聚合物非离子叔胺。还公开了使用这种流体的方法。

69. 发明授权

US07871962B2 Flat rheology drilling fluid 有权
标题翻译：平流变钻井液
公开(公告)号：US07871962B2
公开(公告)日：2011-01-18
申请号：US10647737
申请日：2003-08-25
申请人： Arvind D. Patel , Jim Friedheim , John Lee , Burnham Hoxha
发明人： Arvind D. Patel , Jim Friedheim , John Lee , Burnham Hoxha
IPC分类号： C09K8/36 , C09K8/34
CPC分类号： C09K8/36 , C09K2208/18
摘要： A drilling fluid having an oleaginous fluid that forms the continuous phase; a non-oleaginous fluid, which is the discontinuous phase; a primary emulsifier in sufficient concentration to stabilize the invert emulsion; and a rheology modifier, which serves to moderate the rheology change across a temperature range of 40 to 150° C. The rheology modifier may be a dimer poly-carboxylic C12 to C22 fatty acid, trimer poly-carboxylic C12 to C22 fatty acid, tetramer poly-carboxylic C12 to C22 fatty acid, mixtures of these acids, or a polyamide wherein the polyamide is the condensation reaction product of a C12-C22 fatty acid and a polyamine selected from the group consisting of diethylenetriamine, triethylenetetramine; and pentaethylenetetramine. The drilling fluid preferably includes a weighting agent or bridging agent which may be selected from galena, hematite, magnetite, iron oxides, illmenite, barite, siderite, celestite, dolomite, calcite as well as combinations and mixtures of these and similar compounds. Optionally organophillic clay, fluid loss agents, alkali reserve materials, and other conventional invert emulsion drilling fluid components may be added to the drilling fluid.
摘要翻译：具有形成连续相的含油流体的钻井液; 非油质流体，其是不连续相; 足够浓度的初级乳化剂以稳定反相乳液; 和流变改性剂，其用于在40至150℃的温度范围内调节流变学变化。流变改性剂可以是二聚体多羧酸C12至C22脂肪酸，三聚体多羧酸C12至C22脂肪酸，四聚体聚羧酸C12至C22脂肪酸，这些酸的混合物或聚酰胺，其中聚酰胺是C12-C22脂肪酸和选自二亚乙基三胺，三亚乙基四胺的多胺的缩合反应产物; 和五亚乙基四胺。钻井液优选包括可以选自方铅矿，赤铁矿，磁铁矿，氧化铁，镍铁矿，重晶石，菱铁矿，天青石，白云石，方解石以及这些和类似化合物的组合和混合物的加重剂或桥接剂。任选地，有机物粘土，流体损失剂，碱储备材料和其它常规的反相乳液钻井液组分可以添加到钻井液中。

70. 发明申请

US20090175688A1 SHALE HYDRATION INHIBITION AGENT AND METHOD OF USE 失效
标题翻译： SHALE HYDRIC抑制剂及其使用方法
公开(公告)号：US20090175688A1
公开(公告)日：2009-07-09
申请号：US12402944
申请日：2009-03-12
申请人： Arvind D. Patel , Emanuel Stamatakis
发明人： Arvind D. Patel , Emanuel Stamatakis
IPC分类号： B09B3/00
CPC分类号： C09K8/22 , C09K8/20 , C09K8/24 , C09K8/68 , C09K2208/12
摘要： A method of using a water-base wellbore fluid in subterranean wells that penetrate through a subterranean formation containing a shale which swells in the presence of water. The well bore fluid includes, an aqueous based continuous phase, and a shale hydration inhibition agent. One illustrative shale hydration inhibition agent is preferably the reaction product of a hydrogenation reaction of the product of the reaction of an aromatic amine with an aldehyde, preferably formaldehyde. Alternatively the shale hydration inhibition agent may be the reaction product of a hydrogenation reaction of the product of the reaction of aniline and formaldehyde. In one illustrative embodiment, the shale hydration inhibition agent is selected from the class of compounds known as polycycloaliphatic amines. Further the shale hydration inhibition agent may be present in the form of a free-base or in the form of an acid salt of the disclosed amine compounds. The shale hydration inhibition agent is present in sufficient concentration to substantially reduce the swelling of shale drilling cuttings upon contact with the fluid.
摘要翻译：一种在地下井中使用水基井眼流体的方法，其渗透包含在水存在下溶胀的页岩的地下地层。井眼流体包括水基连续相和页岩水化抑制剂。一种说明性的页岩水化抑制剂优选是芳族胺与醛，优选甲醛的反应产物的氢化反应的反应产物。或者，页岩水化抑制剂可以是苯胺和甲醛的反应产物的氢化反应的反应产物。在一个说明性实施方案中，页岩水化抑制剂选自称为多环脂族胺的化合物类别。此外，页岩水化抑制剂可以以游离碱的形式或所公开的胺化合物的酸式的形式存在。页岩水化抑制剂以足够的浓度存在，以在与流体接触时大大减少页岩钻屑的膨胀。

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