Abstract: This document relates to epoxy compositions containing a sliding-ring polymer (polyrotaxane) additive and a thermally-curable epoxy resin. The epoxy compositions exhibit increased flexural toughness and impact resistance as compared to the same epoxy composition that does not contain the additive. This document also relates to 3D-printed epoxy compositions containing a sliding-ring polymer (polyrotaxane) additive and a thermally-curable epoxy resin.

Abstract: Hydrogen may be produced by a method that includes a first reaction where methane is reacted with water to produce at least carbon monoxide and hydrogen, a second reaction where a metal in a reduced state is reacted with water to form at least hydrogen and a metal in an oxidized state, and a third reaction where carbon monoxide is reacted with the metal in an oxidized state to form at least carbon dioxide and the metal in a reduced state.

Abstract: Cheese sauce products including phospholipid emulsifiers exhibit delayed, reduced or eliminated formation of a surface film upon prolonged exposure to air. The cheese sauce products include a cheese composition that is non-solid at room temperature, a liquid, and a phospholipid emulsifier composition. The cheese sauce products are “clean label” due to the absence of disodium and/or trisodium phosphates therein. Methods of preventing the formation of a surface film on a cheese sauce product involve mixing a cheese sauce composition with a liquid to form a cheese sauce, and admixing a phospholipid emulsifier composition to the cheese sauce. The phospholipid emulsifier composition constitutes about 0.5 wt % to about 5 wt % of the cheese sauce product.

Abstract: Hydrogen may be produced by a method that includes a first reaction where methane is reacted with oxygen to produce at least carbon monoxide and hydrogen, a second reaction where a metal in a reduced state is reacted with water to form at least hydrogen and a metal in an oxidized state, and a third reaction where carbon monoxide is reacted with the metal in an oxidized state to form at least carbon dioxide and the metal in a reduced state.

Abstract: Hydrogen may be produced by a method that includes a first reaction where methane is reacted with carbon dioxide to produce at least carbon monoxide and hydrogen, a second reaction where a metal in a reduced state is reacted with water to form at least hydrogen and a metal in an oxidized state, and a third reaction where carbon monoxide is reacted with the metal in an oxidized state to form at least carbon dioxide and the metal in a reduced state.

Abstract: A method for subsurface sequestration of carbon dioxide includes placing into a subterranean zone an oxidizer having a redox potential of at least 0.5 volts. The subterranean zone has an average total organic content of at least three weight percent. Carbon dioxide is injected into the subterranean zone via one or a plurality of wells. A total volume of all fluids injected into the subterranean zone via the one or the plurality of wells includes, on average per well per month, at least sixty-five weight percent carbon dioxide and less than thirty weight percent water.

Abstract: Cheese sauce products including phospholipid emulsifiers exhibit delayed, reduced or eliminated formation of a surface film upon prolonged exposure to air. The cheese sauce products include a cheese composition that is non-solid at room temperature, a liquid, and a phospholipid emulsifier composition. The cheese sauce products are “clean label” due to the absence of disodium and/or trisodium phosphates therein. Methods of preventing the formation of a surface film on a cheese sauce product involve mixing a cheese sauce composition with a liquid to form a cheese sauce, and admixing a phospholipid emulsifier composition to the cheese sauce. The phospholipid emulsifier composition constitutes about 0.5 wt % to about 5 wt % of the cheese sauce product.

Abstract: A method of treating the surface of a metal casing used in a wellbore by conditioning the metal casing in a conditioning fluid to form a conditioned metal casing, contacting the conditioned metal casing with a treatment fluid to form a treated metal casing, and drying the treated metal casing. A method of increasing the bond strength between cement and a metal casing surface treated with a reactive organic compound by curing the treated metal casing with a cement slurry.

Abstract: Compositions, methods, and systems for treating a subterranean formation for carbon dioxide sequestration, including introducing a ferrate(VI)-based hydraulic fracturing fluid into a subterranean formation. The ferrate(VI)-based hydraulic fracturing fluid comprises ferrate(VI) oxidizing agent having the formula M2FeO4, where M is an alkali earth metal or an alkaline earth metal, and an aqueous carrier fluid. Reacting the ferrate(VI) oxidizing agent with a surface of the subterranean formation so as to increase a pore volume of pores therein and interacting the ferrate(VI) oxidizing agent with carbon dioxide (CO2), so as to sequester the CO2 with the ferrate(VI) oxidizing agent within the pores.

Abstract: Methods for storing carbon dioxide in a subsurface formation include identifying a plurality of negative geologic closures in the subsurface formation. The dimensions of the plurality of negative geologic closures are characterized. Layers of subsurface formation in the vicinity the negative geologic closures are characterized. One of the negative geologic closures is selected for bottom-up storage of carbon dioxide based on the characterized dimensions and layers.

Abstract: Techniques, systems, and methods are disclosed to generate messaging to view content on media devices based on predictive factors. Information may be received to trigger one or more predictive factors and then generate a candidate set of offers to view content at a media device based on the information. Based on the one or more predictive factors, confidence values may be determined for each offer in the candidate set of offers. The candidate set of offers may be ranked based on the associated confidence values. Subsequently, presentation of at least one offer of the candidate set of offers may be caused to display in a user interface screen on the media device based on the ranking.

Abstract: Techniques are provided for storage tier verification checks. A determination is made that a mount operation of an aggregate of a set of volumes stored within a multi-tier storage environment has completed. A first metafile and a second metafile are maintained to track information related to the storage of objects of a volume of the aggregate within a remote object store that is a tier of the multi-tier storage environment. A distributed verification is performed between the first metafile and the second metafile to identify an inconsistency. Accordingly, the first metafile and the second metafile are reconciled to address the inconsistency so that storage information within the first metafile and the second metafile are consistent.

Abstract: Methods for storing carbon dioxide in a subsurface formation include identifying a plurality of negative geologic closures in the subsurface formation. The dimensions of the plurality of negative geologic closures are characterized. Layers of subsurface formation in the vicinity the negative geologic closures are characterized. One of the negative geologic closures is selected for bottom-up storage of carbon dioxide based on the characterized dimensions and layers.

Abstract: A composition of matter may include a cement precursor, a phosphazene oligomer and water. A method may include blending a phosphazene oligomer and a cement precursor to form a cement precursor mixture. The method may then include introducing water into the cement precursor mixture to form the cement slurry. A composition of matter may include a cured cement matrix having a polyphosphazene polymer distributed throughout the cement matrix. A method may include cementing a wellbore by introducing a cement slurry into a wellbore, where the cement slurry includes a phosphazene oligomer. The method then includes maintaining the cement slurry such that a cured cement sheath forms, the cement sheath having a polyphosphazene polymer.

Abstract: The present disclosure relates to methods for preparing a poly(crown ether). The present disclosure also relates to poly(crown ether)s prepared according to such methods.

Abstract: A method for subsurface sequestration of carbon includes injecting a treatment composition comprising a mineralization accelerant into a subterranean zone at least partially saturated with saline water. The mineralization accelerant is reactive with carbon dioxide to form bicarbonate. The method further includes injecting carbon in the form of carbon dioxide into the subterranean zone and sequestering at least a portion of the carbon in the subterranean zone by precipitation in the subterranean zone of a carbonate mineral formed from reaction of the bicarbonate with metal cations dissolved in the saline water. At least a portion of the bicarbonate is formed by reaction of the mineralization accelerant with the carbon dioxide.

Abstract: This disclosure relates to methods of treating the surface of a metal casing, such as a casing used in a wellbore. The disclosure also relates to methods of increasing the bond strength between cement and a metal casing surface treated with a reactive organic compound.

Abstract: A method for subsurface sequestration of carbon dioxide includes placing into a subterranean zone an oxidizer having a redox potential of at least 0.5 volts. The subterranean zone has an average total organic content of at least three weight percent. Carbon dioxide is injected into the subterranean zone via one or a plurality of wells. A total volume of all fluids injected into the subterranean zone via the one or the plurality of wells includes, on average per well per month, at least sixty-five weight percent carbon dioxide and less than thirty weight percent water.

Abstract: A drilling fluid comprises an aqueous solution; a clay-based component comprising layered silicate; and a viscosifier additive comprising poly(acrylamide-co-diallyldimethylammonium chloride) (poly(AAm-co-DMAC)) polymer. The polymer comprises a number average molecular weight of from 10,000 g/mol to 2,000,000 g/mol. The layered silicate and poly(AAm-co-DMAC) reacts to form a silicate-poly(AAm-co-DMAC) complex within the aqueous solution. A mass ratio of the poly(AAm-co-DMAC) to the layered silicate is 1 to 8.

Abstract: In accordance with one or more embodiments of the present disclosure, a host-guest lost circulation material (LCM) composition for sealing lost circulation zones in wellbores includes an aqueous solution; one or more linear polymer chains, the linear polymer chains comprising polyethylene glycols (PEG) with molecular weights greater than 2500 g/mol, polypropylene glycols (PPG), polydimethylsiloxanes (PDMS), or combinations thereof; and one or more cyclic molecules comprising alpha cyclodextrin, beta cyclodextrin, gamma cyclodextrin, or combinations thereof, and wherein the one or more cyclic molecules form a host-guest structure around the one or more linear polymer chains utilizing van der Waals forces.