Brine

About: Brine is a research topic. Over the lifetime, 6542 publications have been published within this topic receiving 76741 citations.

Measurements for the Dissociation Conditions of Methane Hydrate in the Presence of 2-Methyl-2-propanol

Abstract: The dissociation conditions for methane hydrates in the presence of (0.1 to 0.5) mass fraction 2-methyl-2-propanol aqueous solutions were experimentally measured in this study. The liquid water−hydrate−vapor (Lw−H−V) three-phase dissociation temperatures and pressures were determined using the isochoric method. New experimental data were reported within the pressure range from (4 to 10) MPa. It is demonstrated that the addition of 2-methyl-2-propanol had a promotion effect on the formation of methane hydrate. The liquid−hydrate−vapor (L−H−V) three-phase dissociation conditions for brine systems with methane + 0.035 mass fraction NaCl aqueous solution were also measured in this study with the addition of 2-methyl-2-propanol. The promotion effect for methane hydrate formation in brine environments was also observed with a 2-methyl-2-propanol additive.

Will salt repositories be dry

Abstract: The National Academy of Science committee that considered geologic disposal of nuclear waste in the mid-1950s recommended salt as a repository medium, partly because of its high thermal conductivity and because it was believed to be “dry” (perhaps the appropriate thought is “impermeable”). Certainly, the fact that Paleozoic salt deposits exist in many parts of t h e world is evidence for very low rates of dissolution by moving groundwater. The fact that the dissolution rates were so small led many scientists to the conclusion that the salt beds were nearly impermeable. The major source of brine within the salt beds was thought to be fluid inclusions within salt crystals, which could migrate through differential solution toward a source of high heat. The idea that salt was uniformly “dry” was revised when exploratory drilling in the vicinity of the Waste Isolation Pilot Plant (WIPP) in New Mexico encountered brines within the Castile Formation, an evaporite deposit below the Salado Formation. The brine reservoirs were thought to be isolated pockets of brine in an otherwise “impermeable” salt section.