Abstract: A surface-based separation assembly for use in separating fluid. The surface-based separation assembly includes a gas-liquid separator configured to receive a fluid stream, and configured to separate the fluid stream into a gas stream and a mixed stream of at least two liquids. A liquid-liquid separator is in flow communication with the gas-liquid separator. The liquid-liquid separator is configured to receive the mixed stream from the gas-liquid separator, and is configured to separate the mixed stream into a first liquid stream and a second liquid stream. The assembly further includes a rotatable shaft including a first portion extending through the gas-liquid separator, and a second portion extending through the liquid-liquid separator. The rotatable shaft is configured to induce actuation of the gas-liquid separator and the liquid-liquid separator.

Abstract: A surface-based separation assembly for use in separating fluid. The surface-based separation assembly includes a gas-liquid separator configured to receive a fluid stream, and configured to separate the fluid stream into a gas stream and a mixed stream of at least two liquids. A liquid-liquid separator is in flow communication with the gas-liquid separator. The liquid-liquid separator is configured to receive the mixed stream from the gas-liquid separator, and is configured to separate the mixed stream into a first liquid stream and a second liquid stream. The assembly further includes a rotatable shaft including a first portion extending through the gas-liquid separator, and a second portion extending through the liquid-liquid separator. The rotatable shaft is configured to induce actuation of the gas-liquid separator and the liquid-liquid separator.

Abstract: A method in one embodiment includes obtaining produced water from at least one of drilling, completion, or hydrocarbon production. The method also includes separating the produced water into desalinated water and produced salt. Further, the method includes coating the produced salt with resin to provide coated produced salt.

Abstract: A centrifugal separator for separating a mixed stream including a first fluid and a second fluid. The separator includes a housing that extends from a first end to a second end. A first flow opening is at the first end, a second flow opening is at the second end, and a third flow opening is at the second end. A rotor assembly within the housing includes a rotor shaft and a cylindrical drum. The cylindrical drum includes an interior including an outer radial portion and an inner radial portion. The outer radial portion is in flow communication with the first flow opening and the second flow opening, and the inner radial portion is in flow communication with the third flow opening. The cylindrical drum is rotatable within the housing such that the first fluid flows along the outer radial portion, and such that the second fluid flows along the inner radial portion.