Abstract: Hydrogen foams may be used for placing and maintaining hydrogen in a subterranean location. For example, methods for introducing hydrogen to a subterranean location may include: placing a hydrogen foam in a subterranean location, in which the hydrogen foam comprises a continuous phase generated from a foamable composition comprising an aqueous fluid and a discontinuous phase comprising at least hydrogen gas; and maintaining the hydrogen foam in the subterranean location.

Abstract: A method of preparing an enhanced oil recovery composition is described. The method includes carbonizing a biomass waste material to provide carbon microparticles. The method includes functionalizing the carbon microparticles through an acid treatment such that the carbon microparticles have a hydrophilic surface. The method further includes grinding the carbon microparticles to provide carbon nanoparticles, where the carbon nanoparticles have a hydrophilic surface and a hydrophobic surface. A method of enhanced oil recovery is also described.

Abstract: Described is a polymer-based well tracer. The polymer-based well tracer is a fluoropolymer having a fluorinated group. The fluoropolymer may be formed into a particle, a coating for proppant particulates, or encapsulated in a polymeric resin. Upon degradation or hydrolysis of the fluoropolymer, the fluorinated group having a fluorinated compound is released within the well.

Abstract: According to one or more embodiments, a method of growing crystals on a QCM sensor may include treating a crystal growth surface of the QCM sensor with a coupling agent, applying a cation stream to the crystal growth surface of the QCM sensor, and applying an anion stream to the crystal growth surface of the QCM sensor. The crystals forming a crystal layer may have an average thickness greater than 5 nanometers. According to one or more embodiments, a QCM sensor may include a crystal layer on a crystal growth surface of the QCM sensor, where the crystal layer is formed by a process including treating the crystal growth surface of the QCM sensor with a coupling agent, applying a cation stream to the crystal growth surface of the QCM sensor, and applying an anion stream to the crystal growth surface of the QCM sensor.

Abstract: Hydrogen foams may be used for placing and maintaining hydrogen in a subterranean location. For example, methods for introducing hydrogen to a subterranean location may include: placing a hydrogen foam in a subterranean location, in which the hydrogen foam comprises a continuous phase generated from a foamable composition comprising an aqueous fluid and a discontinuous phase comprising at least hydrogen gas; and maintaining the hydrogen foam in the subterranean location.

Abstract: A method and compounds for enhanced oil recovery (EOR) including flooding of a mixture of water and one or more of the compounds in a geological formation. The compounds have a fluoroalkyl group.

Abstract: Described is a polymer-based well tracer. The polymer-based well tracer is a fluoropolymer having a fluorinated group. The fluoropolymer may be formed into a particle, a coating for proppant particulates, or encapsulated in a polymeric resin. Upon degradation or hydrolysis of the fluoropolymer, the fluorinated group having a fluorinated compound is released within the well.

Abstract: Described is a polymer-based well tracer. The polymer-based well tracer is a fluoropolymer having a fluorinated group. The fluoropolymer may be formed into a particle, a coating for proppant particulates, or encapsulated in a polymeric resin. Upon degradation or hydrolysis of the fluoropolymer, the fluorinated group having a fluorinated compound is released within the well.

Abstract: A method includes introducing a fluoro-based small molecule tracer into a stimulation fluid, injecting the stimulation fluid into a target zone of a subterranean formation, and maintaining the fluoro-based small molecule tracer inside the target zone of the subterranean formation for an amount of time. While being maintained inside the target zone, the fluoro-based small molecule tracer comes into contact with water at a downhole temperature resulting in hydrolysis of the fluoro-based small molecule tracer to produce a fluorinated tracer and a nonfluorinated group. Then, produced fluid that includes the fluorinated tracer is recovered, a concentration of the fluorinated tracer in the hydrocarbons is determined, and the concentration of the fluorinated tracer is correlated to a productivity of the target zone of the subterranean formation.

Abstract: A method and compounds for enhanced oil recovery (EOR) including flooding of a mixture of water and one or more of the compounds in a geological formation. The compounds have a fluoroalkyl group.

Abstract: A method includes introducing a fluoro-based small molecule tracer into a stimulation fluid, injecting the stimulation fluid into a target zone of a subterranean formation, and maintaining the fluoro-based small molecule tracer inside the target zone of the subterranean formation for an amount of time. While being maintained inside the target zone, the fluoro-based small molecule tracer comes into contact with water at a downhole temperature resulting in hydrolysis of the fluoro-based small molecule tracer to produce a fluorinated tracer and a nonfluorinated group. Then, produced fluid that includes the fluorinated tracer is recovered, a concentration of the fluorinated tracer in the hydrocarbons is determined, and the concentration of the fluorinated tracer is correlated to a productivity of the target zone of the subterranean formation.

Abstract: A method for monitoring gas production in a subterranean formation includes introducing a polymer composite particle having a degradable portion and a non-degradable portion including a tracer into a stimulation fluid and injecting the stimulation fluid into the subterranean formation to a treatment stage of a treatment zone. The treatment stage has at least one opening that the polymer composite particle may flow into and remain inside. The polymer composite particle may be exposed to moisture at a downhole temperature while inside the at least one opening. The moisture may degrade the degradable portion of the polymer composite particle, thereby releasing the non-degradable portion including the tracer. Produced gas that includes the non-degradable portion including the tracer may be recovered from the subterranean formation and the tracer may be correlated to the treatment stage of the treatment zone of the subterranean formation.

Abstract: A composition includes Janus carbon nanoparticles dispersed in an aqueous-based oil recovery fluid, wherein each of the carbon nanoparticles includes a hydrophobic surface and a hydrophilic surface. A method of preparing an enhanced oil recovery fluid including carbonizing waste plastic material to provide carbon microparticle, functionalizing the carbon microparticles such that the carbon microparticles comprise a hydrophilic surface functionality, grinding the carbon microparticles to provide Janus carbon nanoparticles, wherein the Janus carbon nanoparticles comprise a hydrophilic surface and a hydrophobic surface, and mixing the Janus carbon nanoparticles with an aqueous-based fluid to provide the enhanced oil recovery fluid.

Abstract: A method and compounds for enhanced oil recovery (EOR) including flooding of a mixture of water and one or more of the compounds in a geological formation. The compounds have a fluoroalkyl group.

Abstract: A method and compounds for enhanced oil recovery (EOR) including flooding of a mixture of water and one or more of the compounds in a geological formation. The compounds have a fluoroalkyl group.

Abstract: Acidizing treatments for carbonate reservoir may include a surfactant comprising one or more of C8-C30-alkyloxyglycoside-substituted hydroxysultaine, C8-C30-alkylamidopropyl hydroxysulfobetaine, poly(diallyldimethylammonium chloride), C8-C30-alkyl amido alkylamine oxide, C8-C30-alkyl-amido amine oxide, C8-C30-alkyl amine oxide, C8-C30-alkyl aryl amine oxide, C8-C30-alkyl polyether phosphate, C8-C30-alkyl polyether phosphonate, C8-C30-alkyl ether phosphonate, C8-C30-alkyl amido ammonium propyl sulfonate, C8-C30-alkyl amido ammonium vinyl sulfonate, C8-C30-alkyl ether sulfonate, C8-C30-alkyl amido ammonium propyl sulfonate, C8-C30-alkyl ether sulfonate, alpha olefin sulfonate, C8-C30-alkyl benzene sulfonate, C8-C30-alkyl ethoxy carboxylate, C8-C30-alkylphenol ethoxylate carboxylate, and C8-C30-alkyl amido ammonium carboxylate. These acidizing treatments may also include an aqueous acid solution or mixture.

Abstract: A method for monitoring gas production in a subterranean formation includes introducing a polymer composite particle having a degradable portion and a non-degradable portion including a tracer into a stimulation fluid and injecting the stimulation fluid into the subterranean formation to a treatment stage of a treatment zone. The treatment stage has at least one opening that the polymer composite particle may flow into and remain inside. The polymer composite particle may be exposed to moisture at a downhole temperature while inside the at least one opening. The moisture may degrade the degradable portion of the polymer composite particle, thereby releasing the non-degradable portion including the tracer. Produced gas that includes the non-degradable portion including the tracer may be recovered from the subterranean formation and the tracer may be correlated to the treatment stage of the treatment zone of the subterranean formation.

Abstract: A method includes introducing a fluoro-based small molecule tracer into a stimulation fluid, injecting the stimulation fluid into a target zone of a subterranean formation, and maintaining the fluoro-based small molecule tracer inside the target zone of the subterranean formation for an amount of time. While being maintained inside the target zone, the fluoro-based small molecule tracer comes into contact with water at a downhole temperature resulting in hydrolysis of the fluoro-based small molecule tracer to produce a fluorinated tracer and a nonfluorinated group. Then, produced fluid that includes the fluorinated tracer is recovered, a concentration of the fluorinated tracer in the hydrocarbons is determined, and the concentration of the fluorinated tracer is correlated to a productivity of the target zone of the subterranean formation.

Abstract: Testing apparatuses and their methods of use for testing core samples with treatment fluids, such as reactive fluids, such as acidic fluids, are provided. The testing apparatuses include a top and a base housing coupled together having a sample recess, a viewing window, and a primary distribution hole. Within the sample recess a core sample assembly is secured and immobilized. The core sample assembly in the testing apparatus is viewable through the viewing window and fluidly accessible through the primary distribution hole. Optionally, a light connector coupled to the testing apparatus provides light into the core sample assembly. Methods of using the testing apparatus include providing a testing apparatus with a core sample assembly secured and immobilized within the sample recess of the testing apparatus, introducing a treatment fluid to the core sample, and detecting the interaction within the testing apparatus of the core sample with the treatment fluid.

Abstract: A method and compounds for enhanced oil recovery (EOR) including flooding of a mixture of water and one or more of the compounds in a geological formation. The compounds have a fluoroalkyl group.