摘要:
Actuation and control of the deployment of a polymeric memory-shape material on a wellbore device on a downhole tool may be accomplished by treating a compacted or compressed polymeric memory-shape material with a deployment fluid to lower its Tg and/or decrease its rigidity, thereby softening the polymeric shape-memory material at a given temperature and triggering its expansion or recovery at a lower temperature. Alternatively, the deployment of the compacted or compressed polymeric memory-shape material may be prevented or inhibited by shielding the material with an environment of a fluid that does not substantially lower its Tg, decrease its rigidity or both, and then subsequently contacting the material with a deployment fluid.
摘要:
A composite particle comprises a core, a shielding layer deposited on the core, and further comprising an interlayer region formed at an interface of the shielding layer and the core, the interlayer region having a reactivity less than that of the core, and the shielding layer having a reactivity less than that of the interlayer region, a metallic layer not identical to the shielding layer and deposited on the shielding layer, the metallic layer having a reactivity less than that of the core, and optionally, an adhesion metal layer deposited on the metallic layer.
摘要:
A method of removing a downhole assembly comprises contacting, in the presence of an electrolyte, a first article comprising a first material and acting as an anode, and a second article comprising a second material having a lower reactivity than the first material and acting as a cathode, the downhole assembly comprising the first article in electrical contact with the second article, wherein at least a portion of the first article is corroded in the electrolyte.
摘要:
A method of removing a downhole assembly comprises contacting, in the presence of an electrolyte, a first article comprising a first material and acting as an anode, and a second article comprising a second material having a lower reactivity than the first material and acting as a cathode, the downhole assembly comprising the first article in electrical contact with the second article, wherein at least a portion of the first article is corroded in the electrolyte.
摘要:
A composite particle comprises a core, a shielding layer deposited on the core, and further comprising an interlayer region formed at an interface of the shielding layer and the core, the interlayer region having a reactivity less than that of the core, and the shielding layer having a reactivity less than that of the interlayer region, a metallic layer not identical to the shielding layer and deposited on the shielding layer, the metallic layer having a reactivity less than that of the core, and optionally, an adhesion metal layer deposited on the metallic layer.
摘要:
Actuation and control of the deployment of a polymeric memory-shape material on a wellbore device on a downhole tool may be accomplished by treating a compacted or compressed polymeric memory-shape material with a deployment fluid to lower its Tg and/or decrease its rigidity, thereby softening the polymeric shape-memory material at a given temperature and triggering its expansion or recovery at a lower temperature. Alternatively, the deployment of the compacted or compressed polymeric memory-shape material may be prevented or inhibited by shielding the material with an environment of a fluid that does not substantially lower its Tg, decrease its rigidity or both, and then subsequently contacting the material with a deployment fluid.
摘要:
In one aspect, a method of forming a shape conforming material is disclosed that in one non-limiting embodiment may include: providing a base shape memory material having a glass transition temperature; and adding a selected amount of heat transfer nanoparticles to the base shape conforming material to provide the shape conforming material. In one aspect, the heat transfer nanoparticles include a core and a shell, wherein the core has a melting point below the glass transition temperature of the base shape memory material and the melting point of the shell.
摘要:
A method for upgrading a heavy oil includes: disposing a catalyst comprising rhodium and a support in a heavy oil environment, the heavy oil environment including a heavy oil comprising an aromatic compound; introducing hydrogen; and hydrogenating the aromatic compound with the catalyst and hydrogen to upgrade the heavy oil to upgraded oil. A method for converting an asphaltene includes: disposing a supported catalyst in a composition comprising an asphaltene, the supported catalyst being a low temperature catalyst; introducing hydrogen; and hydrogenating the asphaltene to convert the asphaltene into a hydrogenated asphaltene.
摘要:
A method of removing a corrodible downhole article having a surface coating includes eroding the surface coating by physical abrasion, chemical etching, or a combination of physical abrasion and chemical etching, the surface coating comprising a metallic layer of a metal resistant to corrosion by a corrosive material.
摘要:
A method for decomposing an asphaltene particle includes contacting the asphaltene particle with an intercalating agent and separating an asphaltene molecule from the asphaltene particle to decompose the asphaltene particle. Dispersing an asphaltene particle includes functionalizing the asphaltene particle and contacting the asphaltene particle with a solvent to disperse the asphaltene particle. Such asphaltene particle decomposition and dispersal can be used in a method for improving oil recovery that includes disposing a reagent in an oil environment; contacting an asphaltene particle with the reagent; decomposing the asphaltene particle to produce decomposed asphaltene; and displacing the decomposed asphaltene to improve oil recovery.