Abstract:
The invention concerns a process for producing a dry film with a high galling resistance on a threaded element for drilling and/or operating a hydrocarbon well, characterized in that it comprises at least the following steps: ⋅ forming a stable dispersion comprising a polyamide-imide powder, a polar aprotic solvent with a boiling point of more than 180°C at 760 mm Hg, and water; ⋅ applying the dispersion to one of the ends (1, 2) of said threaded element at a temperature in the range 20°C to 40°C; ⋅ drying the coated end.
Abstract:
A wellbore tool includes a non-hydrocarbon-based grease disposed between a first component and a second component. The grease remains substantially impermeable to hydrocarbons at temperatures up to at least about 150°C and possibly up to at least about 200°C, and pressures up to at least about 27 MPa and possibly to at least about 50 MPa. Methods of forming such wellbore tools include selecting a grease to comprise a non-hydrocarbon-based grease that remains at least substantially impermeable to hydrocarbons at temperatures up to at least about 150°C and possibly up to at least about 200°C, and pressures up to at least about 27 MPa and possibly to at least about 50 MPa; and disposing the grease at an interface between a first component of a wellbore tool and a second component of a wellbore tool.
Abstract:
L'invention a pour objet élément tubulaire destiné au forage et/ou à l'exploitation de puits d'hydrocarbures présentant une extrémité (1;2) comprenant au moins une zone filetée (3;4), caractérisé en ce que l'extrémité (1;2) est au moins partiellement revêtue d'un film sec (12), comprenant une matrice (13) comportant un mélange d'au moins un polysilicate alcalin et d'au moins un polymère organique thermoplastique semi-cristallin. L'invention a également pour objet un procédé de réalisation d'un film sec (12), comprenant une matrice (13) comportant un mélange d'au moins un polysilicate alcalin et d'au moins un polymère organique thermoplastique semi-cristallin, sur un tel élément tubulaire destiné au forage et/ou à l'exploitation de puits d'hydrocarbures.
Abstract:
Изобретение относится к смазочным составам и способам их получения. Смазочный состав включает смазочную среду и продукт дегидратации природных минералов или смеси природных минералов или синтезированных гидратов. Продукт дегидратации содержит оксиды MgO и/или SiO 2 и/или Аl 2 O 3 и/или СаО и/или Fe 2 O 3 и/или К 2 O и/или Na 2 O и имеет размер частиц в диапазоне 100 -100000 нм. Способ получения смазочного состава включает этап дегидратации гидратов оксидов металлов и/или неметаллов при температуре от 300 до 1200°С, этап стабилизации продукта дегидратации, который осуществляется путем температурной выдержки при температуре от 700 до 1200°С и временной выдержки от 1 до 3 часов и этап перемешивания полученного продукта со смазочной средой. Полученный смазочный состав, не только способствует уменьшению нагрузок на трущиеся поверхности, но и способен выполнять функцию упрочнения трущихся поверхностей за счет пластической деформации металла в нанообъемах и перевод в активное наноструктурированное состояние поверхностного слоя, который упрочняется. При этом происходит интенсивное дробление зерен металла, увеличение плотности их границ, улучшаются условия для диффузии углерода вглубь поверхности (по вертикали) и внутрь зерен (по горизонтали).
Abstract translation:本发明涉及润滑组合物及其制备方法。 润滑组合物包含润滑介质和天然矿物或天然矿物或合成水合物的混合物的脱水产物。 脱水产物含有氧化物MgO和/或SiO 2和/或β1 O 3和/或 和/或Fe 2 O 3和/或α2 O和/或Na 2 O,并且具有在100-100000nm范围内的粒度。 制备润滑组合物的方法包括金属和/或非金属氧化物的水合物在300至1200℃的温度下脱水的步骤,通过将脱水产物保持在温度 从700到1200°? 时间为1〜3小时,以及将所得产物与润滑介质混合的步骤。 所得到的润滑组合物不仅有助于降低摩擦表面的载荷,而且还能够实现由于金属在纳米体积中的塑性变形而使摩擦面增强的功能,并且使表面层成为活性纳米结构状态, 所以表面层被加强。 与此同时,金属颗粒发生强烈破碎,晶粒密度增加,碳的深度扩大(垂直)和晶粒(水平)扩散的条件得到改善。
Abstract:
The invention relates to an anticorrosive agent for metal components. In order to provide an environmentally compatible anticorrosive agent which can be applied to metal components without components having to be freed of the anticorrosive agent before installation, allows good coating even on oily surfaces, has a great anticorrosive effect and is also compatible with aqueous lubricant compositions, the anticorrosive agent of the invention comprises (in percent by weight): a) more than 50% water, b) a surfactant; c) a boric acid derivative; d) a platelet-like or rod-like filler; e) optionally a binder; f) optionally a carboxylic acid salt.
Abstract:
Antimicrobial lubricant compositions are disclosed. The antimicrobial lubricant compositions are particularly useful in providing antimicrobial capability to a wide-range of medical devices. The compositions include an oil lubricant. Representative lubricants may include polydimethyl siloxane, trifluoropropyl copolymer polysiloxane, and a copolymer of dimethylsiloxane and trifluoropropylmethylsiloxane. The compositions include rheology modifiers as necessary. The compositions also include antimicrobial agents, which may be selected from a wide array of agents. Representative antimicrobial agents include of aldehydes, anilides, biguanides, bis-phenols, quaternary ammonium compounds, cetyl pyridium chloride, cetrimide, alexidine, chlorhexidine diacetate, benzalkonium chloride, and o-phthalaldehyde.
Abstract:
Antimicrobial compositions and methods are disclosed. The antimicrobial compositions are particularly useful in providing antimicrobial capability to a wide-range of medical devices. In one aspect the invention relates a UV curable antimicrobial coating comprising a UV curable composition comprising an oligomer, a momoner, and a photoinitiator which are together capable of forming a UV curable polymer composition. The compositions include rheology modifiers as necessary. The compositions also include antimicrobial agents, which may be selected from a wide array of agents. Representative antimicrobial agents include cetyl pyridium chloride, cetrimide, alexidine, chlorexidine diacetate, benzalkonium chloride, and o-phthalaldehyde.
Abstract:
The present invention relates to the machine buiding industry and it is used for coating of friction surfaces by triboceramics to decrease wear and to reduce the friction coefficient. The triboceramic compound contains oxides - magnesium oxide MgO, silica SiO2, alumine Al2O3, calcium oxide CaO, ferric oxide Fe2O3, being in the chemical composition of serpentine and talc, the natural and/or synthesized heat unprocessed and/or dehydrated minerals - serpentine, talc, clinochlore, magnesite, quartz and aluminium hydroxide are introduced forming a mixture with the following composition of oxides, in mass %: SiO2-46-54; MgO - 26-32, Al2O3- 2-5; Fe2O3 - 1,0-1,5; CaO - 0,1-0,3, water H2O - 5 or less.