Abstract: A system for reducing carbon dioxide leakage during carbon dioxide sequestration in saline deep-water aquifers including one or more carbon dioxide injectors submerged into an aquifer with a plurality of pressure sensors on the injectors, one or more saline water producing wells submerged into an aquifer, a process line to transfer the saline water from the producing wells to an adjacent wetland, and a local pressure monitoring interface.

Abstract: Disclosed are methods, systems, and computer-readable medium to perform operations including: receiving input data comprising: (i) production data from a plurality of hydraulically connected wells, and (ii) measured pressure, volume, temperature (PVT) data for a subset of the plurality of hydraulically connected wells, wherein the measured PVT data comprises gas samples and oil samples; generating, using a radial based four-dimensional model, simulated PVT data for the plurality of hydraulically connected wells not in the subset; determining, based on the simulated PVT data, respective fluid compositions for the plurality of hydraulically connected wells; aggregating, based on one or more factors, the respective fluid compositions into an aggregated composition; and flashing the aggregated composition to a desired pressure and temperature.

Abstract: A downhole flowmeter assembly includes a main body configured to be disposed in a wellbore and a spinner assembly comprising a hub from which radially extends a plurality of pitched blades. The hub is configured to rotate in response to a flow of wellbore fluid across the blades, and a velocity of the flow can be determined from a speed of rotation of the hub. The assembly also includes an oleophobic coating disposed at least partially on the hub and the plurality of pitched blades.

Abstract: A wellbore system includes a logging tool operable for taking measurements in a wellbore and a spinner flow meter carried by the logging tool. The spinner flow meter is operable for determining a local speed of a fluid impinging upon an impeller of the spinner flow meter. The wellbore system also further includes a fluid source including a solvent for inhibiting the adherence of a sludge on the logging tool. A pump is in fluid communication with the fluid source and is operable to impart a hydraulic pressure to the solvent. At least one hydraulic nozzle is carried by the logging tool, and the at least one hydraulic nozzle is directed at the impeller of the spinner flow meter and is in fluid communication with the pump. A controller is operably coupled to the pump to selectively deliver the solvent to the at least one hydraulic nozzle.